Analysis
- max time kernel
148s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
09/06/2024, 10:19
General
- Target 4617596adc8396a3bfd8345b839235938bb56007a4f2a21a358cbb5b7de5377b.exe
- Size 1.9MB
- Sample240609-mc2hrsaa44
- SHA256 4617596adc8396a3bfd8345b839235938bb56007a4f2a21a358cbb5b7de5377b
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 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\4617596adc8396a3bfd8345b839235938bb56007a4f2a21a358cbb5b7de5377b.exe"C:\Users\Admin\AppData\Local\Temp\4617596adc8396a3bfd8345b839235938bb56007a4f2a21a358cbb5b7de5377b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat4C7A.tmpC:\Users\Admin\AppData\Local\Temp\kat4C7A.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
kat4C7A.tmp
memory/788-0-0x0000000002440000-0x0000000002441000-memory.dmp
memory/788-2-0x0000000004070000-0x00000000041D3000-memory.dmp
memory/788-10-0x0000000000400000-0x00000000005EE000-memory.dmp
memory/4744-9-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4744-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4744-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4744-24-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4744-25-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4744-27-0x000000001DCF0000-0x000000001DF4F000-memory.dmp
memory/4744-42-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4744-43-0x0000000000400000-0x0000000000648000-memory.dmp