Analysis
- max time kernel
93s - max time network
100s - platform
windows11-21h2_x64 - resource
win11-20240508-en - resource tags
- submitted
28/05/2024, 15:58
General
- Target 0cd6eba7b6dbeefd4572be0ae903518e95b306fd087ffd6077b7ed316d074af8.exe
- Size 2.6MB
- Sample240528-temwqacb74
- SHA256 0cd6eba7b6dbeefd4572be0ae903518e95b306fd087ffd6077b7ed316d074af8
Malware Config
Extracted
-
stealc
Extracted
-
vidar
-
https://steamcommunity.com/profiles/76561199689717899
-
https://t.me/copterwin
-
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\0cd6eba7b6dbeefd4572be0ae903518e95b306fd087ffd6077b7ed316d074af8.exe"C:\Users\Admin\AppData\Local\Temp\0cd6eba7b6dbeefd4572be0ae903518e95b306fd087ffd6077b7ed316d074af8.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat7659.tmpC:\Users\Admin\AppData\Local\Temp\kat7659.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kat7659.tmp
memory/236-8-0x0000000000400000-0x0000000000646000-memory.dmp
memory/236-10-0x0000000000400000-0x0000000000646000-memory.dmp
memory/236-4-0x0000000000400000-0x0000000000646000-memory.dmp
memory/236-16-0x0000000000400000-0x0000000000646000-memory.dmp
memory/236-17-0x0000000000400000-0x0000000000646000-memory.dmp
memory/236-19-0x000000001B850000-0x000000001BAAF000-memory.dmp
memory/236-34-0x0000000000400000-0x0000000000646000-memory.dmp
memory/236-35-0x0000000000400000-0x0000000000646000-memory.dmp
memory/2500-0-0x00000000024F0000-0x00000000024F1000-memory.dmp
memory/2500-2-0x00000000040C0000-0x0000000004209000-memory.dmp
memory/2500-9-0x0000000000400000-0x000000000069E000-memory.dmp