Analysis
- max time kernel
140s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
26/10/2024, 06:55
General
- Target 5b01b239f2b48841380e3665d1c3f98a.exe
- Size 420KB
- Sample241026-hpr3msynfj
- SHA256 8c32b0c595db81613c72044bb9d2d3d8170916760d30b7bf0c9710da462a2bb2
Malware Config
Extracted
-
stealc
-
default9_cap
-
http://62.204.41.177
-
url_path
/edd20096ecef326d.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\5b01b239f2b48841380e3665d1c3f98a.exe"C:\Users\Admin\AppData\Local\Temp\5b01b239f2b48841380e3665d1c3f98a.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\BAD4.tmp.exe"C:\Users\Admin\AppData\Local\Temp\BAD4.tmp.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1088 -s 10163⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1088 -ip 10881⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
BAD4.tmp.exe
memory/1088-29-0x0000000000400000-0x0000000002B5A000-memory.dmp
memory/1088-27-0x0000000000400000-0x0000000002B5A000-memory.dmp
memory/1088-26-0x0000000000400000-0x0000000002B5A000-memory.dmp
memory/1088-25-0x0000000000400000-0x0000000002B5A000-memory.dmp
memory/2444-10-0x0000000002BE0000-0x0000000002CE0000-memory.dmp
memory/2444-16-0x0000000000400000-0x0000000000468000-memory.dmp
memory/2444-11-0x0000000000400000-0x0000000002B6E000-memory.dmp
memory/2444-12-0x00000000047C0000-0x0000000004825000-memory.dmp
memory/2444-1-0x0000000002BE0000-0x0000000002CE0000-memory.dmp
memory/2444-3-0x0000000000400000-0x0000000000468000-memory.dmp
memory/2444-2-0x00000000047C0000-0x0000000004825000-memory.dmp
memory/2444-30-0x0000000000400000-0x0000000002B6E000-memory.dmp