Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
26/11/2024, 21:46
General
- Target 5a45cfe0b266362b482cace7205c2c32.exe
- Size 403KB
- Sample241126-1mlrys1nbw
- SHA256 a0e267be6b982f374175ffc83be37b3fcf351cbd1e9ee899d02fb7c722c55c7b
Malware Config
Extracted
-
stealc
-
551488411
-
http://92.255.57.88
-
url_path
/7bbacc20a3bd2eb5.php
Signatures
- Stealc
Stealc is an infostealer written in C++.
- Stealc family
- Downloads MZ/PE file
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\5a45cfe0b266362b482cace7205c2c32.exe"C:\Users\Admin\AppData\Local\Temp\5a45cfe0b266362b482cace7205c2c32.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\BA86.tmp.exe"C:\Users\Admin\AppData\Local\Temp\BA86.tmp.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2084 -s 10123⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2084 -ip 20841⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
BA86.tmp.exe
memory/1548-2-0x0000000004880000-0x00000000048E5000-memory.dmp
memory/1548-1-0x0000000002D90000-0x0000000002E90000-memory.dmp
memory/1548-3-0x0000000000400000-0x0000000000468000-memory.dmp
memory/1548-10-0x0000000002D90000-0x0000000002E90000-memory.dmp
memory/1548-11-0x0000000000400000-0x0000000002AA6000-memory.dmp
memory/1548-15-0x0000000004880000-0x00000000048E5000-memory.dmp
memory/1548-26-0x0000000000400000-0x0000000000468000-memory.dmp
memory/1548-29-0x0000000000400000-0x0000000002AA6000-memory.dmp
memory/2084-28-0x0000000000400000-0x0000000002A87000-memory.dmp