Analysis
- max time kernel
146s - max time network
152s - platform
windows11-21h2_x64 - resource
win11-20240611-en - resource tags
- submitted
13/06/2024, 06:22
General
- Target 8ecc5631b7ffbf940182c1f827cec03f8e3a234033a1318c15660558bf081200.exe
- Size 2.1MB
- Sample240613-g41snaxcmd
- SHA256 8ecc5631b7ffbf940182c1f827cec03f8e3a234033a1318c15660558bf081200
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\8ecc5631b7ffbf940182c1f827cec03f8e3a234033a1318c15660558bf081200.exe"C:\Users\Admin\AppData\Local\Temp\8ecc5631b7ffbf940182c1f827cec03f8e3a234033a1318c15660558bf081200.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat46FC.tmpC:\Users\Admin\AppData\Local\Temp\kat46FC.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
kat46FC.tmp
memory/2384-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2384-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2384-9-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2384-22-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2384-23-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2384-26-0x00000000284E0000-0x000000002873F000-memory.dmp
memory/2384-33-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2384-34-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4688-0-0x0000000002480000-0x0000000002481000-memory.dmp
memory/4688-1-0x0000000004180000-0x0000000004290000-memory.dmp
memory/4688-10-0x0000000000400000-0x0000000000629000-memory.dmp