Analysis
- max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
10/06/2024, 04:27
General
- Target c3e0eb61af97f946b9df8c30633418307760075afcf85d4b0ea91b64d4ef9045.exe
- Size 2.4MB
- Sample240610-e227lacg45
- SHA256 c3e0eb61af97f946b9df8c30633418307760075afcf85d4b0ea91b64d4ef9045
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 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 2 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\c3e0eb61af97f946b9df8c30633418307760075afcf85d4b0ea91b64d4ef9045.exe"C:\Users\Admin\AppData\Local\Temp\c3e0eb61af97f946b9df8c30633418307760075afcf85d4b0ea91b64d4ef9045.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat417D.tmpC:\Users\Admin\AppData\Local\Temp\kat417D.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat417D.tmp
memory/2852-0-0x0000000000930000-0x0000000000931000-memory.dmp
memory/2852-2-0x0000000004080000-0x00000000041E3000-memory.dmp
memory/2852-10-0x0000000000400000-0x0000000000663000-memory.dmp
memory/3212-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3212-9-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3212-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3212-13-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3212-14-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3212-16-0x000000001B720000-0x000000001B97F000-memory.dmp
memory/3212-31-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3212-32-0x0000000000400000-0x0000000000648000-memory.dmp