Analysis
- max time kernel
190s - max time network
300s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
06/06/2024, 23:06
General
- Target 2d0c58ff1e5ce7f2007640c76fad02824c57ddc3560cef478d939d695bf5caf1.exe
- Size 1.8MB
- Sample240606-23pzzsed43
- SHA256 2d0c58ff1e5ce7f2007640c76fad02824c57ddc3560cef478d939d695bf5caf1
Malware Config
Extracted
-
stealc
Extracted
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vidar
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https://t.me/r8z0l
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https://steamcommunity.com/profiles/76561199698764354
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Signatures
- Detect Vidar Stealer 12 IoCs
- Stealc
Stealc is an infostealer written in C++.
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\2d0c58ff1e5ce7f2007640c76fad02824c57ddc3560cef478d939d695bf5caf1.exe"C:\Users\Admin\AppData\Local\Temp\2d0c58ff1e5ce7f2007640c76fad02824c57ddc3560cef478d939d695bf5caf1.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat6D1.tmpC:\Users\Admin\AppData\Local\Temp\kat6D1.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat6D1.tmp" & rd /s /q "C:\ProgramData\CAKFIJDHJEGI" & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat6D1.tmp
memory/1744-0-0x0000000000840000-0x0000000000841000-memory.dmp
memory/1744-1-0x0000000000400000-0x00000000005C8000-memory.dmp
memory/1744-2-0x0000000003F60000-0x00000000040AB000-memory.dmp
memory/1744-10-0x0000000000400000-0x00000000005C8000-memory.dmp
memory/4240-17-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4240-11-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4240-9-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4240-5-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4240-18-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4240-20-0x000000001B6D0000-0x000000001B92F000-memory.dmp
memory/4240-35-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4240-36-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4240-48-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4240-49-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4240-50-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4240-51-0x0000000000400000-0x0000000000648000-memory.dmp