Analysis
- max time kernel
92s - max time network
93s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
03/06/2024, 23:39
General
- Target 3ed49569b8a21177f43508613ee4694141a38d47d1c96ed2311df62a692a3be5.exe
- Size 1.8MB
- Sample240603-3nbdqaeb95
- SHA256 3ed49569b8a21177f43508613ee4694141a38d47d1c96ed2311df62a692a3be5
Malware Config
Extracted
-
stealc
Extracted
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vidar
-
https://t.me/ta904ek
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https://steamcommunity.com/profiles/76561199695752269
-
user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Signatures
- Detect Vidar Stealer 14 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 4 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\3ed49569b8a21177f43508613ee4694141a38d47d1c96ed2311df62a692a3be5.exe"C:\Users\Admin\AppData\Local\Temp\3ed49569b8a21177f43508613ee4694141a38d47d1c96ed2311df62a692a3be5.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat6A72.tmpC:\Users\Admin\AppData\Local\Temp\kat6A72.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\kat6A72.tmp" & rd /s /q "C:\ProgramData\DGHJEHJJDAAA" & 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
kat6A72.tmp
memory/1040-16-0x0000000000400000-0x0000000000649000-memory.dmp
memory/1040-62-0x0000000000400000-0x0000000000649000-memory.dmp
memory/1040-4-0x0000000000400000-0x0000000000649000-memory.dmp
memory/1040-8-0x0000000000400000-0x0000000000649000-memory.dmp
memory/1040-10-0x0000000000400000-0x0000000000649000-memory.dmp
memory/1040-65-0x0000000000400000-0x0000000000649000-memory.dmp
memory/1040-15-0x0000000000400000-0x0000000000649000-memory.dmp
memory/1040-64-0x0000000000400000-0x0000000000649000-memory.dmp
memory/1040-63-0x0000000000400000-0x0000000000649000-memory.dmp
memory/1040-33-0x0000000000400000-0x0000000000649000-memory.dmp
memory/1040-18-0x0000000019370000-0x00000000195CF000-memory.dmp
memory/1040-50-0x0000000000400000-0x0000000000649000-memory.dmp
memory/1040-51-0x0000000000400000-0x0000000000649000-memory.dmp
memory/1040-34-0x0000000000400000-0x0000000000649000-memory.dmp
memory/3412-2-0x0000000004030000-0x000000000417C000-memory.dmp
memory/3412-0-0x0000000002320000-0x0000000002321000-memory.dmp
memory/3412-9-0x0000000000400000-0x00000000005CE000-memory.dmp