Analysis
- max time kernel
270s - max time network
304s - platform
windows7_x64 - resource
win7-20240221-en - resource tags
- submitted
02/05/2024, 02:55
General
- Target a ton of ya/ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe
- Size 63KB
- Sample240502-defjmshb42
- SHA256 ff43049677c57277f12a1d97f02af3029d7b75b5ad40303a28f1b0452997969d
Malware Config
Extracted
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xworm
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127.0.0.1:23638
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209.25.140.1:5525:23638
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bring-recorder.gl.at.ply.gg:23638
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action-yesterday.gl.at.ply.gg:23638
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147.185.221.19:23638
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then-wheel.gl.at.ply.gg::23638
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then-wheel.gl.at.ply.gg:23638
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teen-modes.gl.at.ply.gg:23638
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Install_directory
%LocalAppData%
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install_file
uwumonster.exe
Signatures
- Detect Xworm Payload 4 IoCs
- Xworm
Xworm is a remote access trojan written in C#.
- Drops startup file 2 IoCs
- Executes dropped EXE 5 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 7 IoCs
- Suspicious use of WriteProcessMemory 18 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
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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
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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)
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C:\Windows\system32\taskeng.exetaskeng.exe {82711DAC-2303-49C7-9C28-68EE6DFCD359} S-1-5-21-330940541-141609230-1670313778-1000:KXIPPCKF\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\uwumonster.exeC:\Users\Admin\AppData\Local\uwumonster.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\uwumonster.exeC:\Users\Admin\AppData\Local\uwumonster.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\uwumonster.exeC:\Users\Admin\AppData\Local\uwumonster.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\uwumonster.exeC:\Users\Admin\AppData\Local\uwumonster.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\uwumonster.exeC:\Users\Admin\AppData\Local\uwumonster.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
uwumonster.exe
memory/612-17-0x0000000000E30000-0x0000000000E46000-memory.dmp
memory/2880-11-0x0000000000BB0000-0x0000000000BC6000-memory.dmp
memory/2892-0-0x000007FEF5573000-0x000007FEF5574000-memory.dmp
memory/2892-1-0x0000000000DC0000-0x0000000000DD6000-memory.dmp
memory/2892-6-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp
memory/2892-7-0x000007FEF5573000-0x000007FEF5574000-memory.dmp
memory/2892-12-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp