Analysis
- max time kernel
90s - max time network
127s - platform
windows11-21h2_x64 - resource
win11-20240508-en - resource tags
- submitted
24/06/2024, 22:54
General
- Target a82188ccc6458d0e56895cd6475458bf71a3f4f031442a4bc637cdb1e2d5af4e.exe
- Size 2.1MB
- Sample240624-2v2ntazckj
- SHA256 a82188ccc6458d0e56895cd6475458bf71a3f4f031442a4bc637cdb1e2d5af4e
Malware Config
Extracted
-
vidar
-
https://t.me/g067n
-
https://steamcommunity.com/profiles/76561199707802586
-
user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0
Signatures
- Detect Vidar Stealer 14 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 data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- 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
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\a82188ccc6458d0e56895cd6475458bf71a3f4f031442a4bc637cdb1e2d5af4e.exe"C:\Users\Admin\AppData\Local\Temp\a82188ccc6458d0e56895cd6475458bf71a3f4f031442a4bc637cdb1e2d5af4e.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat5E0E.tmpC:\Users\Admin\AppData\Local\Temp\kat5E0E.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat5E0E.tmp" & rd /s /q "C:\ProgramData\HIIIIEGHDGDB" & exit3⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
-
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat5E0E.tmp
memory/1212-59-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1212-42-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1212-77-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1212-76-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1212-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1212-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1212-24-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1212-25-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1212-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1212-43-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1212-27-0x000000002D190000-0x000000002D3EF000-memory.dmp
memory/1212-75-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1212-60-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1212-74-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3884-0-0x00000000024D0000-0x00000000024D1000-memory.dmp
memory/3884-9-0x0000000000400000-0x0000000000624000-memory.dmp
memory/3884-2-0x0000000004200000-0x0000000004310000-memory.dmp