Analysis
- max time kernel
120s - max time network
121s - platform
windows7_x64 - resource
win7-20240508-en - resource tags
- submitted
07/06/2024, 00:14
General
- Target 7f3bb57f5fb44c491af50961f6754cbbcebc106e04752c4286fa29c044a71d1f.exe
- Size 1.8MB
- Sample240607-ajm8haec2x
- SHA256 7f3bb57f5fb44c491af50961f6754cbbcebc106e04752c4286fa29c044a71d1f
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 11 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
- Loads dropped DLL 2 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.
- Modifies system certificate store 2 TTPs 3 IoCs
- Suspicious behavior: EnumeratesProcesses 53 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\7f3bb57f5fb44c491af50961f6754cbbcebc106e04752c4286fa29c044a71d1f.exe"C:\Users\Admin\AppData\Local\Temp\7f3bb57f5fb44c491af50961f6754cbbcebc106e04752c4286fa29c044a71d1f.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat4598.tmpC:\Users\Admin\AppData\Local\Temp\kat4598.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
94308059B57B3142E455B38A6EB92015
Tar4BD6.tmp
kat4598.tmp
memory/1196-13-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1196-11-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1196-23-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1196-262-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1196-18-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1196-17-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1196-15-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1196-241-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1196-9-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1196-22-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1196-226-0x0000000014B20000-0x0000000014D7F000-memory.dmp
memory/1196-182-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1196-203-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1196-224-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1264-2-0x0000000003360000-0x00000000034AB000-memory.dmp
memory/1264-0-0x0000000000220000-0x0000000000221000-memory.dmp
memory/1264-20-0x0000000000400000-0x00000000005C8000-memory.dmp