Analysis
- max time kernel
194s - max time network
299s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
06/06/2024, 23:47
General
- Target 4880a68e79bcf505f8341046ddab7ea94532a78a1cc872cad7264cf4534a1309.exe
- Size 2.4MB
- Sample240606-3s4wtseh73
- SHA256 4880a68e79bcf505f8341046ddab7ea94532a78a1cc872cad7264cf4534a1309
Malware Config
Extracted
-
stealc
Extracted
-
vidar
-
https://t.me/ta904ek
-
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 8 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 user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- 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
- Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 10 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\4880a68e79bcf505f8341046ddab7ea94532a78a1cc872cad7264cf4534a1309.exe"C:\Users\Admin\AppData\Local\Temp\4880a68e79bcf505f8341046ddab7ea94532a78a1cc872cad7264cf4534a1309.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat7B6A.tmpC:\Users\Admin\AppData\Local\Temp\kat7B6A.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat7B6A.tmp
memory/2424-0-0x00000000007B0000-0x00000000007B1000-memory.dmp
memory/2424-10-0x0000000000400000-0x0000000000663000-memory.dmp
memory/2424-2-0x0000000003F60000-0x00000000040AC000-memory.dmp
memory/3096-9-0x0000000000400000-0x0000000000649000-memory.dmp
memory/3096-8-0x0000000000400000-0x0000000000649000-memory.dmp
memory/3096-4-0x0000000000400000-0x0000000000649000-memory.dmp
memory/3096-16-0x0000000000400000-0x0000000000649000-memory.dmp
memory/3096-17-0x0000000000400000-0x0000000000649000-memory.dmp
memory/3096-19-0x0000000019290000-0x00000000194EF000-memory.dmp
memory/3096-34-0x0000000000400000-0x0000000000649000-memory.dmp
memory/3096-35-0x0000000000400000-0x0000000000649000-memory.dmp