Analysis
- max time kernel
146s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20240508-en - resource tags
- submitted
23/05/2024, 02:02
General
- Target 38bbcabe8608c99d9f662dce0c6f140f572f932a9ce012e2ed401e14ee977888.exe
- Size 2.0MB
- Sample240523-cf5pgshg3s
- SHA256 38bbcabe8608c99d9f662dce0c6f140f572f932a9ce012e2ed401e14ee977888
Malware Config
Extracted
-
stealc
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 2 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\38bbcabe8608c99d9f662dce0c6f140f572f932a9ce012e2ed401e14ee977888.exe"C:\Users\Admin\AppData\Local\Temp\38bbcabe8608c99d9f662dce0c6f140f572f932a9ce012e2ed401e14ee977888.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat62C1.tmpC:\Users\Admin\AppData\Local\Temp\kat62C1.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
kat62C1.tmp
memory/3272-0-0x00000000024A0000-0x00000000024A1000-memory.dmp
memory/3272-1-0x00000000041B0000-0x00000000042F9000-memory.dmp
memory/3272-9-0x0000000000400000-0x0000000000601000-memory.dmp
memory/4484-8-0x0000000000400000-0x0000000000646000-memory.dmp
memory/4484-10-0x0000000000400000-0x0000000000646000-memory.dmp
memory/4484-4-0x0000000000400000-0x0000000000646000-memory.dmp
memory/4484-19-0x0000000000400000-0x0000000000646000-memory.dmp
memory/4484-20-0x0000000000400000-0x0000000000646000-memory.dmp
memory/4484-22-0x0000000026090000-0x00000000262EF000-memory.dmp
memory/4484-37-0x0000000000400000-0x0000000000646000-memory.dmp
memory/4484-38-0x0000000000400000-0x0000000000646000-memory.dmp