Analysis
- max time kernel
147s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20240508-en - resource tags
- submitted
09/06/2024, 12:34
General
- Target a302be0fe26ce02082aab349227e0dc65e4040d23e1f596310d5b62ecbb5a41c.exe
- Size 2.4MB
- Sample240609-prskhsbc42
- SHA256 a302be0fe26ce02082aab349227e0dc65e4040d23e1f596310d5b62ecbb5a41c
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\a302be0fe26ce02082aab349227e0dc65e4040d23e1f596310d5b62ecbb5a41c.exe"C:\Users\Admin\AppData\Local\Temp\a302be0fe26ce02082aab349227e0dc65e4040d23e1f596310d5b62ecbb5a41c.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat4D07.tmpC:\Users\Admin\AppData\Local\Temp\kat4D07.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
kat4D07.tmp
memory/2744-0-0x00000000025B0000-0x00000000025B1000-memory.dmp
memory/2744-2-0x00000000040A0000-0x0000000004203000-memory.dmp
memory/2744-9-0x0000000000400000-0x0000000000663000-memory.dmp
memory/2920-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2920-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2920-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2920-24-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2920-25-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2920-29-0x000000001DD10000-0x000000001DF6F000-memory.dmp
memory/2920-44-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2920-45-0x0000000000400000-0x0000000000648000-memory.dmp