Analysis
- max time kernel
92s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
- submitted
25/12/2023, 04:02
General
- Target The Summer Waifu.exe
- Size 5.7MB
- Sample231225-els9rafbb7
- SHA256 9d15283240ff79899aeb0f2866c51b75d953e5c04a8069397734a3cb6aef87af
Score
10/10
Malware Config
Extracted
Family
-
marsstealer
Botnet
-
Default
C2
-
moscow-post.com/log/loger.php
Signatures
- Mars Stealer
An infostealer written in C++ based on other infostealers.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\The Summer Waifu.exe"C:\Users\Admin\AppData\Local\Temp\The Summer Waifu.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\Adobe\U54.exe"C:\Users\Admin\AppData\Roaming\Adobe\U54.exe"2⤵
- Executes dropped EXE
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2248 -s 12163⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2248 -ip 22481⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
U54.exe
memory/2248-12-0x0000000000400000-0x000000000043D000-memory.dmp
memory/2248-15-0x0000000000400000-0x000000000043D000-memory.dmp
memory/4956-0-0x0000000000390000-0x0000000000404000-memory.dmp
memory/4956-1-0x0000000074B40000-0x00000000752F0000-memory.dmp
memory/4956-2-0x0000000004F40000-0x0000000004F50000-memory.dmp
memory/4956-13-0x0000000074B40000-0x00000000752F0000-memory.dmp