Analysis
- max time kernel
195s - max time network
299s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
07/06/2024, 00:00
General
- Target 5cf1875d49763a1e2c06cde297dd35a1a1b6be86ce105de2bd174091f787cc00.exe
- Size 2.4MB
- Sample240607-aaqx2afb42
- SHA256 5cf1875d49763a1e2c06cde297dd35a1a1b6be86ce105de2bd174091f787cc00
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 4 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\5cf1875d49763a1e2c06cde297dd35a1a1b6be86ce105de2bd174091f787cc00.exe"C:\Users\Admin\AppData\Local\Temp\5cf1875d49763a1e2c06cde297dd35a1a1b6be86ce105de2bd174091f787cc00.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat65BF.tmpC:\Users\Admin\AppData\Local\Temp\kat65BF.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat65BF.tmp
memory/1396-0-0x00000000008F0000-0x00000000008F1000-memory.dmp
memory/1396-1-0x0000000003F30000-0x000000000407C000-memory.dmp
memory/1396-9-0x0000000000400000-0x0000000000663000-memory.dmp
memory/2040-4-0x0000000000400000-0x0000000000649000-memory.dmp
memory/2040-8-0x0000000000400000-0x0000000000649000-memory.dmp
memory/2040-10-0x0000000000400000-0x0000000000649000-memory.dmp
memory/2040-16-0x0000000000400000-0x0000000000649000-memory.dmp
memory/2040-17-0x0000000000400000-0x0000000000649000-memory.dmp
memory/2040-19-0x000000001B6E0000-0x000000001B93F000-memory.dmp
memory/2040-34-0x0000000000400000-0x0000000000649000-memory.dmp
memory/2040-35-0x0000000000400000-0x0000000000649000-memory.dmp