Analysis
- max time kernel
148s - max time network
153s - platform
windows11-21h2_x64 - resource
win11-20240611-en - resource tags
- submitted
25/06/2024, 21:33
General
- Target cb3b4355a341ac4b442caf96df33190ccffc3c1a9d4474d8df0c905458c193ff.exe
- Size 2.2MB
- Sample240625-1elf8axcmm
- SHA256 cb3b4355a341ac4b442caf96df33190ccffc3c1a9d4474d8df0c905458c193ff
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 16 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\cb3b4355a341ac4b442caf96df33190ccffc3c1a9d4474d8df0c905458c193ff.exe"C:\Users\Admin\AppData\Local\Temp\cb3b4355a341ac4b442caf96df33190ccffc3c1a9d4474d8df0c905458c193ff.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat7B3B.tmpC:\Users\Admin\AppData\Local\Temp\kat7B3B.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat7B3B.tmp" & rd /s /q "C:\ProgramData\GIJKKKFCFHCF" & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat7B3B.tmp
memory/3168-35-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3168-61-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3168-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3168-79-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3168-9-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3168-78-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3168-24-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3168-25-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3168-77-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3168-36-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3168-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3168-44-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3168-45-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3168-27-0x000000002F730000-0x000000002F98F000-memory.dmp
memory/3168-62-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3168-73-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3308-2-0x0000000002B20000-0x0000000002C30000-memory.dmp
memory/3308-10-0x0000000000400000-0x0000000000641000-memory.dmp
memory/3308-0-0x00000000023A0000-0x00000000023A1000-memory.dmp