Analysis
- max time kernel
285s - max time network
300s - platform
windows7_x64 - resource
win7-20240221-en - resource tags
- submitted
02/05/2024, 02:37
General
- Target a ton of ya/ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe
- Size 63KB
- Sample240502-c35m1agg89
- SHA256 ff43049677c57277f12a1d97f02af3029d7b75b5ad40303a28f1b0452997969d
Malware Config
Extracted
-
xworm
-
127.0.0.1:23638
-
209.25.140.1:5525:23638
-
bring-recorder.gl.at.ply.gg:23638
-
action-yesterday.gl.at.ply.gg:23638
-
147.185.221.19:23638
-
then-wheel.gl.at.ply.gg::23638
-
then-wheel.gl.at.ply.gg:23638
-
teen-modes.gl.at.ply.gg:23638
-
Install_directory
%LocalAppData%
-
install_file
uwumonster.exe
Signatures
- Detect Xworm Payload 5 IoCs
- Xworm
Xworm is a remote access trojan written in C#.
- Drops startup file 2 IoCs
- Executes dropped EXE 4 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 6 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\a ton of ya\ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe"C:\Users\Admin\AppData\Local\Temp\a ton of ya\ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe"1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "uwumonster" /tr "C:\Users\Admin\AppData\Local\uwumonster.exe"2⤵
- Creates scheduled task(s)
-
-
C:\Windows\system32\taskeng.exetaskeng.exe {AB16520C-B396-4F28-B693-75522E414E69} S-1-5-21-2297530677-1229052932-2803917579-1000:HKULBIBU\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\uwumonster.exeC:\Users\Admin\AppData\Local\uwumonster.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\uwumonster.exeC:\Users\Admin\AppData\Local\uwumonster.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\uwumonster.exeC:\Users\Admin\AppData\Local\uwumonster.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\uwumonster.exeC:\Users\Admin\AppData\Local\uwumonster.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
uwumonster.exe
memory/1676-18-0x0000000001290000-0x00000000012A6000-memory.dmp
memory/2396-16-0x00000000003A0000-0x00000000003B6000-memory.dmp
memory/2920-0-0x000007FEF5683000-0x000007FEF5684000-memory.dmp
memory/2920-1-0x0000000001210000-0x0000000001226000-memory.dmp
memory/2920-6-0x000007FEF5680000-0x000007FEF606C000-memory.dmp
memory/2920-7-0x000007FEF5683000-0x000007FEF5684000-memory.dmp
memory/2920-8-0x000007FEF5680000-0x000007FEF606C000-memory.dmp
memory/3008-13-0x0000000000DB0000-0x0000000000DC6000-memory.dmp