Questions tagged [malware]
Malware, a portmanteau for malicious software, is software used or created by attackers to disrupt computer operation, gather sensitive information, or gain access to computer systems.
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.NET Packer/Protector
I have been trying to analyse a .NET trojanized software, here is the link for reference:https://www.virustotal.com/gui/file/6186e0b5b1d820744f8f7aa682eec6b043ba11c7737a64e173522b8b55d06f81/detection
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IDA pro Error how to resolve this error
52C187F5: The instruction at 0x52C187F5 referenced memory at 0x4. The memory could not be read -> 00000004 (exc.code c0000005, tid 672)
How to solve this?
I have seen sandbox reports in those the ...
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Academic journals for latest RE/Malware/Exploitation research?
I am looking for journals to keep track of the latest advances in reverse engineering, binary analysis, malware, binary exploitation, etc.
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Is there an easier way to break on a rootkit driver load, other than disassembling IopLoadDriver?
The only method i know to break on a DriverEntry of a rootkit driver when its loaded is to disassmble nt!IopLoadDriver and find an indirect call in it and break on it. Setting a break point on ...
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How to mark data as pointer to external functions in ghidra
I'm examining a piece of malware with Ghidra, and like most malware it uses LoadLibrary and GetProcAddress to dynamically load libraries and functions. GetProcAddress stores the function addresses in ...
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Reversing Pyarmor Discussion
Anyone messing around with pyarmor recently? For those of you that are unaware of what pyarmor is, its a protection software that is to help obfuscate and protect your software. Heres an image of what ...
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Whether samples downloaded from virus share can execute automatically in my computer
I am doing some android malware analysis work and downloaded many android samples in virus share, but I found some of them are windows malware e.g. labeled 'win32' or something.
Are these windows ...
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Identifying file-access functions used by explorer.exe
I'm trying to write a Windows 10 64-bit rootkit that runs on userland and hides files using IAT hooking. I managed to accomplish that on cmd.exe by hooking FindFirstFileW and FindNextFileW imported ...
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What are the different types of packers?
I know the basic principle of a packer. Basically, it is a small routine launched at the beginning of the program that decompress the actual program and jump to it once achieved.
Yet, it seems that ...
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Reverse Engineering Android ROMS to detect malicious code
I'm working on reverse Engineering Android ROMS (Firmware you can flash onto your phone) so that I can scan them for malicious behavior. I've been looking all over the internet but unfortunately I'm ...
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Reverse Engineering Dynamic Malware Imports?
How is it possible to reverse engineer dynamic malware imports using a debugger like x32dbg or Ollydbg?
I want to dump process injection malware using a debugger trick using a breakpoint on write ...
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Malware analysis - Debugger hangs at HttpSendRequestA
I'm reverse engineering a malware that at some point tries to connect to http://api.ipify.org in order to get the IP address of the infected PC.
I was able to replicate this behaviour with a small ...
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How to reverse Engineer a Struct in IDA Pro?
How to identify and define a struct in IDA pro Decompiling during reverse engineering?
Please explain the easiest way to figure out the struct in IDA Pro decompilation!
To make life easier are there ...
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In IDA freeware, how to create a new database in IDC and load a file into it?
I have IDA freeware version 5 and version 8, v5 is running on wine, v8 is directly on kali OS, and I am trying to create an IDC script to generate asm+lst files for all files in a certain folder.
What ...
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API Breakpoints not hitting while debugging a malware using x32dbg
I have been having a really strange issue which I have tried all ways to troubleshoot from my end but was not successful.
I am going through a malware analysis course and following the debugging ...
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Yara Rules 4.3 Warnings
$hex = {CC CC CC CC CC CC CC CC}
Warning : "$hex" may slow down scanning
Do anyone know how to remove this warning
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WinDbg Preview search is not returning results
I am attempting to manually unpack a malware sample. I am using the new WinDbg Preview (only thing that is available to download now). After letting the malware call VirtualAlloc I am trying to search ...
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Why is Windows 10 still blocking me from running malware?
I am analyzing some malware on Windows 10. I installed FLARE VM, disabled tamper protection and disabled the virus scanner in the registry. However when I attempt to run a malware, Windows is still ...
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Reversing .net crypter with obfuscated imports
I have started recently with reverse engineering. I came across the linked file. It is a packed/crypted putty.exe. (WARNING: IT MAY BE BACKDOORED!!)
How it's working and loading putty.exe with runpe ...
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How can i Lifting x86_64 assembly code to LLVM-IR
I'm researching of virus and I'm faced with the task of deobfuscating its virtual machine. I chose to do this through LLVM and I had a question, where can I see a simple example of lifting ...
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How 10 IS HEX 5 bytes?
I am stuck in this video. Please solve this issue.
This video is about Encryption and Decryption using Win32 API.
https://www.youtube.com/watch?v=OQuRwpUTBpQ
In this video 27:07 it's saying "10 ...
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How to dump PE from Injected Code using x32dbg?
How do I extract or dump injected executable code/payload from malware using the x32dbg trick?
My malware sample is injecting an Exe PE file in a legitimate File like "Explorer.exe".
How do ...
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How can I de-obfuscate a VBScript (.vbs) file?
I have a VBScript (.vbs) file that is a malware dropper. It executes correctly in a commercial malware sandbox. but does not act the same in my manual analysis lab, and I need to figure out why. The ...
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Reverse engineering of Process manager apk
Is there someone helps me to understand how to build the server of this apk https://lab52.io/blog/complete-dissection-of-an-apk-with-a-suspicious-c2-server/ ? I tried to disassemble the apk but it is ...
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Malware application in Android
Is there some website that give us the possibility to download malware APK in order to study it? I’m interested to study the abuse of android.permission.RECORD_AUDIO in Android 8.
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Malware apk in Android [duplicate]
Is there some website where i'm able to find malware apk filtering by permission (for instance: RECORD_AUDIO)? I'm looking for website similar to pithus
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Is there a Capturebat alternative on windows 10 for file capture?
I've been looking for a capturebat alternative that will function on Windows 10 and 64 bit.
I'm not interested in capturbat's network capabilities; rather, I'm interested in its capacity to capture ...
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How to get the APIs present in a particular block in a CFG using Angr?
I'm doing binary analysis based on Control Flow Graph (CFG). As I suppose to get the APIs from every block in the CFG. I'm finding it very difficult to do so using Angr as I don't have enough grip on ...
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How to know each register value instruction by instruction in a binary using radare2?
As I am using the radare2 for reverse engineering, I find it very difficult to get all the register values instruction by instruction with the help of the Radare2 tool. Could someone please help me to ...
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Is it possible to fake being joined to a domain in Windows 10?
I'm dealing with a malware sample from a pentest that will only execute properly if the system is a member of the target organization's Windows Active Directory domain.
Rather than standing up my own ...
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Hex editing an IP address of a different length
I am performing some Windows malware research on a rogue AV software called SpySheriff (password: infected). I want to edit the IP address within the PE (.exe) file to change it to my honeypot IP ...
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x64dbg : TraceInto only in user code
The question seems pretty simple, but I can't achieve this simple thing in a reasonable time. I have a malware proceeding to deobfuscate a large amount of APIs in memory. Only the pointer to the ...
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What conditions can create the "Not a Valid Win32 Application" error message upon load?
I'm doing research on the PE format/Windows Loader and I am unable to locate specifics as to what creates the error "Not a valid Win32 Application" followed by a failure to load.
I've tried changing ...
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How to analyze EFI dynamically?
I'm new to reversing UEFI Malware. There is a UEFI rootkit called MoonBounce which I'm trying to analyze dynamically; It's an EFI driver.
I tried a tool called efi_dxe_emulator but it needs an NVRAM ...
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Does opening a crash dump run a file in memory?
I am new to malware analysis, and I'm learning how to detect malware that uses process injection to execute PE files from memory. I chose a ransomware sample that uses process injection to load the ...
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CFT challenge with Trojan malware?
I am trying to solve a CTF challenge with levels with escalating difficulty.
At this point, the program (PE32 executable) is detected as malware (wacatac to be more precise) by Windows Defender. It ...
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Analyzing a possibly malware sample
I am trying to analyze a possible malicious sample. It's a windows executable
e3f04124e2e26f8f030f6845086875a9
Md5sum
Intel 386 or later processors and compatible processors
File 2464.exe
2464.exe: ...
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How can i reconstruct a full PE from a memory injected PE that only has IAT + sections content?
I have a injected PE (kernel mode rootkit to be exact) that only has the IAT table, which basically only stores the addresses of some kernel functions in an array which is referenced inside its code, ...
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Malware analysis of undetected NodeJS token grabber
I've recently nearly had my discord account stolen by a token grabber called 'Katana Legends'.
Someone contacted me asking to playtest a game, which prompted a .exe file.
I ran the file and website on ...
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Decompiling a Node.js application compiled with nexe
Someone have sent a Discord token stealer and out of curiosity, I would like to decompile it, just to get some info about the attacker.
Judging by folders created in my user directory, multiple ...
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CaptureBAT equivalent on Windows 10?
Hello RE community on stack !
I am a beginner, so please pardon any commonplace errors
I am looking to run CaptureBAT on a Windows 10 VM, to capture network activity of different kinds of Malwares
I ...
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decoding thread context structure in x64dbg
Is there any way to decode the thread context structure returned by "GetThreadContext" and used by "SetThreadContext" in x64dbg?
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What is the meaning of SYSTEM_INFO.wProcessorLevel?
I am performing some RE on a malware sample, and they are checking the value of SYSTEM_INFO[32] which is SYSTEM_INFO.wProcessorLevel. The description MS provides is not clear to me. The malware checks ...
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Decode byte numbers into string
There is this grabber called Itroublve grabber, which a lot of people use, and I wondered what it's aes encryption key is, so I looked at the code, and I found this:
Key = new byte[]
{
...
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Problem with analyzing malware
We have a malware that blocks all analytics software in real time.
This software has blacklisted a large list of software that performs analysis (x64dbg, ida, serialport monitor, etc.)
This software ...
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Format of data in the .code/.text section
I'm attempting to dissect/disassemble a windows PE file under Linux using objdump. On surface analysis, the .code section was disassembled to :
tmp.exe: file format pei-i386
Disassembly of ...
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Capturing created and deleted files from a Java file
I am new to the malware analysis field but I do have an issue, a file I am working on creates 2 vbs files, reads from them and deletes them, this all happens in around 2 seconds. Also this is a Java ...
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Debugging malware that will only run as a service
I'm trying to debug a malware sample that installs to a system as service and then will only start if it starts as a service. Other functions are still available without the service start, like ...
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Want to use win API hooking to detect wmi query string? But can't find IWbemServices::ExecQuery in fastprox.dll
I want to implement WMI query detection function using apimon plugin in sandbox https://github.com/tklengyel/drakvuf
To do it,I have to get the DLL symbol file.
But I can't locate the IWbemServices::...
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Disassemble and debug dynamic generated code executed via delegate in c#
I'm trying to reverse engeneer a malware using dnSpy that at some point do this:
delegate IntPtr H7IREAEBYY(string path, IntPtr data);
byte[] array = new byte[]
{ 233, 151, ... }
IntPtr value ...
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