Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
04/06/2024, 12:37
General
- Target c3ea7a64dd0e6d1888a6403e38f300d30c55340e55d9e76741e42fd3ec689213.exe
- Size 69KB
- Sample240604-ptfzhagf66
- SHA256 c3ea7a64dd0e6d1888a6403e38f300d30c55340e55d9e76741e42fd3ec689213
Malware Config
Extracted
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xworm
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3.1
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daddy.linkpc.net:7000
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Install_directory
%AppData%
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install_file
USB.exe
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telegram
https://api.telegram.org/bot6659084379:AAHwYx_m5LGEEADvQo2F9Q3CbvJIfs0Hh7o/sendMessage?chat_id=5457636267
Signatures
- Detect Xworm Payload 2 IoCs
- Xworm
Xworm is a remote access trojan written in C#.
- Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Drops startup file 2 IoCs
- Executes dropped EXE 2 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 behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 7 IoCs
- Suspicious use of AdjustPrivilegeToken 6 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 8 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\c3ea7a64dd0e6d1888a6403e38f300d30c55340e55d9e76741e42fd3ec689213.exe"C:\Users\Admin\AppData\Local\Temp\c3ea7a64dd0e6d1888a6403e38f300d30c55340e55d9e76741e42fd3ec689213.exe"1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\c3ea7a64dd0e6d1888a6403e38f300d30c55340e55d9e76741e42fd3ec689213.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'c3ea7a64dd0e6d1888a6403e38f300d30c55340e55d9e76741e42fd3ec689213.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\c3ea7a64dd0e6d1888a6403e38f300d30c55340e55d9e76741e42fd3ec689213.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "c3ea7a64dd0e6d1888a6403e38f300d30c55340e55d9e76741e42fd3ec689213" /tr "C:\Users\Admin\AppData\Roaming\c3ea7a64dd0e6d1888a6403e38f300d30c55340e55d9e76741e42fd3ec689213.exe"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Roaming\c3ea7a64dd0e6d1888a6403e38f300d30c55340e55d9e76741e42fd3ec689213.exeC:\Users\Admin\AppData\Roaming\c3ea7a64dd0e6d1888a6403e38f300d30c55340e55d9e76741e42fd3ec689213.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Roaming\c3ea7a64dd0e6d1888a6403e38f300d30c55340e55d9e76741e42fd3ec689213.exeC:\Users\Admin\AppData\Roaming\c3ea7a64dd0e6d1888a6403e38f300d30c55340e55d9e76741e42fd3ec689213.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
c3ea7a64dd0e6d1888a6403e38f300d30c55340e55d9e76741e42fd3ec689213.exe.log
powershell.exe.log
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
__PSScriptPolicyTest_sldq5uis.m4w.ps1
c3ea7a64dd0e6d1888a6403e38f300d30c55340e55d9e76741e42fd3ec689213.exe
memory/2624-49-0x00007FFA4C3A0000-0x00007FFA4CE61000-memory.dmp
memory/2624-0-0x0000000000FF0000-0x0000000001008000-memory.dmp
memory/2624-50-0x00007FFA4C3A3000-0x00007FFA4C3A5000-memory.dmp
memory/2624-51-0x00007FFA4C3A0000-0x00007FFA4CE61000-memory.dmp
memory/2624-1-0x00007FFA4C3A3000-0x00007FFA4C3A5000-memory.dmp
memory/4304-17-0x00007FFA4C3A0000-0x00007FFA4CE61000-memory.dmp
memory/4304-14-0x00007FFA4C3A0000-0x00007FFA4CE61000-memory.dmp
memory/4304-13-0x00007FFA4C3A0000-0x00007FFA4CE61000-memory.dmp
memory/4304-12-0x00007FFA4C3A0000-0x00007FFA4CE61000-memory.dmp
memory/4304-4-0x00000271032C0000-0x00000271032E2000-memory.dmp