Analysis
- max time kernel
300s - max time network
301s - platform
windows7_x64 - resource
win7-20240215-en - resource tags
- submitted
02/05/2024, 02:37
General
- Target a ton of ya/ya - Copy - Copy - Copy - Copy.exe
- Size 63KB
- Sample240502-c35m1agg89
- 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
- Contains code to disable Windows Defender 1 IoCs
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
- 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 10 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.
- Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\a ton of ya\ya - Copy - Copy - Copy - Copy.exe"C:\Users\Admin\AppData\Local\Temp\a ton of ya\ya - 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 {6221025F-22A7-4AD5-A38E-DAD949D5A7FC} S-1-5-21-2248906074-2862704502-246302768-1000:GHPZRGFC\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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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
uwumonster.exe
memory/1468-15-0x0000000001060000-0x0000000001076000-memory.dmp
memory/1624-0-0x000007FEF5C33000-0x000007FEF5C34000-memory.dmp
memory/1624-1-0x00000000002A0000-0x00000000002B6000-memory.dmp
memory/1624-6-0x000007FEF5C30000-0x000007FEF661C000-memory.dmp
memory/1624-7-0x000007FEF5C33000-0x000007FEF5C34000-memory.dmp
memory/1624-8-0x000007FEF5C30000-0x000007FEF661C000-memory.dmp
memory/1624-19-0x0000000000710000-0x000000000071E000-memory.dmp
memory/3056-12-0x0000000000CB0000-0x0000000000CC6000-memory.dmp