Analysis
- max time kernel
129s - max time network
124s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
07/06/2024, 09:31
General
- Target 07de47a4f3fafa4b4b3079204fe31829700d5970d66aced6fb7a55c6a50b6234.exe
- Size 2.5MB
- Sample240607-lhe2aaec2y
- SHA256 07de47a4f3fafa4b4b3079204fe31829700d5970d66aced6fb7a55c6a50b6234
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\07de47a4f3fafa4b4b3079204fe31829700d5970d66aced6fb7a55c6a50b6234.exe"C:\Users\Admin\AppData\Local\Temp\07de47a4f3fafa4b4b3079204fe31829700d5970d66aced6fb7a55c6a50b6234.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat5A45.tmpC:\Users\Admin\AppData\Local\Temp\kat5A45.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
kat5A45.tmp
memory/2520-0-0x00000000023E0000-0x00000000023E1000-memory.dmp
memory/2520-1-0x0000000002A70000-0x0000000002BD3000-memory.dmp
memory/2520-6-0x0000000000400000-0x000000000067A000-memory.dmp
memory/4572-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4572-9-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4572-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4572-13-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4572-14-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4572-17-0x000000001B7D0000-0x000000001BA2F000-memory.dmp
memory/4572-31-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4572-32-0x0000000000400000-0x0000000000648000-memory.dmp