Analysis
- max time kernel
128s - max time network
298s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
07/06/2024, 02:08
General
- Target e3e4a1ada6d6cac625f89a702cfcbb5c5c0f6a6cfed0248535fc9c716c22e8d0.exe
- Size 1.8MB
- Sample240607-ckzn2afh41
- SHA256 e3e4a1ada6d6cac625f89a702cfcbb5c5c0f6a6cfed0248535fc9c716c22e8d0
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 4 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\e3e4a1ada6d6cac625f89a702cfcbb5c5c0f6a6cfed0248535fc9c716c22e8d0.exe"C:\Users\Admin\AppData\Local\Temp\e3e4a1ada6d6cac625f89a702cfcbb5c5c0f6a6cfed0248535fc9c716c22e8d0.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\katA7B.tmpC:\Users\Admin\AppData\Local\Temp\katA7B.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
katA7B.tmp
memory/2332-10-0x0000000000400000-0x00000000005C8000-memory.dmp
memory/2332-1-0x0000000000400000-0x00000000005C8000-memory.dmp
memory/2332-2-0x0000000003FB0000-0x00000000040FB000-memory.dmp
memory/2332-0-0x0000000000640000-0x0000000000641000-memory.dmp
memory/4776-11-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4776-9-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4776-5-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4776-26-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4776-27-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4776-30-0x0000000025F20000-0x000000002617F000-memory.dmp
memory/4776-44-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4776-45-0x0000000000400000-0x0000000000648000-memory.dmp