Analysis
- max time kernel
41s - max time network
51s - platform
windows11-21h2_x64 - resource
win11-20240508-en - resource tags
- submitted
25/06/2024, 03:55
General
- Target 7d16625fe645727f4165c13466ebca51c451bd403af8622be34f0ef7179e563f.exe
- Size 2.1MB
- Sample240625-eg7xcasfjm
- SHA256 7d16625fe645727f4165c13466ebca51c451bd403af8622be34f0ef7179e563f
Malware Config
Extracted
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vidar
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https://t.me/g067n
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https://steamcommunity.com/profiles/76561199707802586
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0
Signatures
- Detect Vidar Stealer 9 IoCs
- Stealc
Stealc is an infostealer written in C++.
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Executes dropped EXE 1 IoCs
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- 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 6 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\7d16625fe645727f4165c13466ebca51c451bd403af8622be34f0ef7179e563f.exe"C:\Users\Admin\AppData\Local\Temp\7d16625fe645727f4165c13466ebca51c451bd403af8622be34f0ef7179e563f.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat448B.tmpC:\Users\Admin\AppData\Local\Temp\kat448B.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\kat448B.tmp" & rd /s /q "C:\ProgramData\FIDHIEBAAKJD" & 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
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Downloads
kat448B.tmp
memory/1352-0-0x00000000024A0000-0x00000000024A1000-memory.dmp
memory/1352-2-0x0000000004160000-0x0000000004270000-memory.dmp
memory/1352-10-0x0000000000400000-0x0000000000624000-memory.dmp
memory/5024-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/5024-9-0x0000000000400000-0x0000000000648000-memory.dmp
memory/5024-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/5024-11-0x0000000000400000-0x0000000000648000-memory.dmp
memory/5024-12-0x0000000000400000-0x0000000000648000-memory.dmp
memory/5024-13-0x0000000000400000-0x0000000000648000-memory.dmp
memory/5024-14-0x0000000000400000-0x0000000000648000-memory.dmp
memory/5024-15-0x0000000000400000-0x0000000000648000-memory.dmp