Analysis
- max time kernel
149s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20240611-en - resource tags
- submitted
13/06/2024, 22:14
General
- Target 85ce3c82cf0d4b0300da1446bc22bcb9f0bea2cbbf4c7a909090792c804b8932.exe
- Size 2.1MB
- Sample240613-15tkhssdlf
- SHA256 85ce3c82cf0d4b0300da1446bc22bcb9f0bea2cbbf4c7a909090792c804b8932
Malware Config
Extracted
-
stealc
Extracted
-
vidar
-
https://t.me/r8z0l
-
https://steamcommunity.com/profiles/76561199698764354
-
user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Signatures
- Detect Vidar Stealer 16 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
-
C:\Users\Admin\AppData\Local\Temp\85ce3c82cf0d4b0300da1446bc22bcb9f0bea2cbbf4c7a909090792c804b8932.exe"C:\Users\Admin\AppData\Local\Temp\85ce3c82cf0d4b0300da1446bc22bcb9f0bea2cbbf4c7a909090792c804b8932.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat6AFE.tmpC:\Users\Admin\AppData\Local\Temp\kat6AFE.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\kat6AFE.tmp" & rd /s /q "C:\ProgramData\HIDAFHDHCBGD" & 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
kat6AFE.tmp
memory/692-9-0x0000000000400000-0x0000000000629000-memory.dmp
memory/692-1-0x0000000002C40000-0x0000000002D50000-memory.dmp
memory/692-0-0x00000000024D0000-0x00000000024D1000-memory.dmp
memory/4620-33-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4620-34-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4620-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4620-22-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4620-24-0x000000001B890000-0x000000001BAEF000-memory.dmp
memory/4620-32-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4620-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4620-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4620-42-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4620-43-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4620-59-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4620-60-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4620-67-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4620-75-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4620-76-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4620-79-0x0000000000400000-0x0000000000648000-memory.dmp