Analysis
- max time kernel
120s - max time network
124s - platform
windows10-2004_x64 - resource
win10v2004-20240611-en - resource tags
- submitted
12/06/2024, 07:41
General
- Target afbef7ee93f0f1db9f64520009666308d6f05cb481fe1df5887cf1f7aad03717.exe
- Size 1.6MB
- Sample240612-jjee2avcne
- SHA256 afbef7ee93f0f1db9f64520009666308d6f05cb481fe1df5887cf1f7aad03717
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 10 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\afbef7ee93f0f1db9f64520009666308d6f05cb481fe1df5887cf1f7aad03717.exe"C:\Users\Admin\AppData\Local\Temp\afbef7ee93f0f1db9f64520009666308d6f05cb481fe1df5887cf1f7aad03717.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat3EAF.tmpC:\Users\Admin\AppData\Local\Temp\kat3EAF.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
kat3EAF.tmp
memory/1044-13-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1044-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1044-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1044-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1044-11-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1044-12-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1044-16-0x0000000023B50000-0x0000000023DAF000-memory.dmp
memory/1044-23-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1044-31-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1044-47-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2340-9-0x0000000000400000-0x0000000000594000-memory.dmp
memory/2340-1-0x0000000002A20000-0x0000000002B30000-memory.dmp
memory/2340-0-0x0000000000860000-0x0000000000861000-memory.dmp