Analysis
- max time kernel
133s - max time network
144s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
01/06/2024, 07:46
General
- Target a ton of ya/ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe
- Size 63KB
- Sample240601-jl2cksfc34
- 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 2 IoCs
- Xworm
Xworm is a remote access trojan written in C#.
- Drops startup file 2 IoCs
- Executes dropped EXE 3 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 5 IoCs
- Suspicious use of WriteProcessMemory 2 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:\Users\Admin\AppData\Local\uwumonster.exeC:\Users\Admin\AppData\Local\uwumonster.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\uwumonster.exeC:\Users\Admin\AppData\Local\uwumonster.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\uwumonster.exeC:\Users\Admin\AppData\Local\uwumonster.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
uwumonster.exe.log
uwumonster.exe
memory/500-1-0x00007FFC8AAB3000-0x00007FFC8AAB4000-memory.dmp
memory/500-0-0x0000000000A20000-0x0000000000A36000-memory.dmp
memory/500-6-0x00007FFC8AAB0000-0x00007FFC8B49C000-memory.dmp
memory/500-12-0x00007FFC8AAB3000-0x00007FFC8AAB4000-memory.dmp
memory/500-13-0x00007FFC8AAB0000-0x00007FFC8B49C000-memory.dmp
memory/5096-9-0x00007FFC8AAB0000-0x00007FFC8B49C000-memory.dmp
memory/5096-11-0x00007FFC8AAB0000-0x00007FFC8B49C000-memory.dmp