Analysis
- max time kernel
93s - max time network
95s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
11/06/2024, 16:36
General
- Target 582b99c36f922cb8e077dbb7b45ce982824556ef402077c12e453d902b5588cb.exe
- Size 1.6MB
- Sample240611-t4ayfstcnd
- SHA256 582b99c36f922cb8e077dbb7b45ce982824556ef402077c12e453d902b5588cb
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\582b99c36f922cb8e077dbb7b45ce982824556ef402077c12e453d902b5588cb.exe"C:\Users\Admin\AppData\Local\Temp\582b99c36f922cb8e077dbb7b45ce982824556ef402077c12e453d902b5588cb.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat3902.tmpC:\Users\Admin\AppData\Local\Temp\kat3902.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat3902.tmp
memory/1684-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1684-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1684-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1684-13-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1684-14-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1684-16-0x000000001B7C0000-0x000000001BA1F000-memory.dmp
memory/1684-31-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1684-32-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3520-0-0x0000000000690000-0x0000000000691000-memory.dmp
memory/3520-2-0x0000000003FA0000-0x00000000040B0000-memory.dmp
memory/3520-9-0x0000000000400000-0x0000000000594000-memory.dmp