Analysis
- max time kernel
145s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
26/05/2024, 01:59
General
- Target XClient.exe
- Size 175KB
- Sample240526-cek9fsbe56
- SHA256 90c35873f1c8dc86fcf087b25a5030bd530ae6cbe72e2b5a8a1e78aa1fca6599
Malware Config
Extracted
-
xworm
-
127.0.0.1:7000
-
192.168.1.3:7000
-
fe80::717e:3988:f9ae:459f%20:7000
-
install_file
USB.exe
Signatures
- Detect Xworm Payload 1 IoCs
- Xworm
Xworm is a remote access trojan written in C#.
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 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.
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\XClient.exe"C:\Users\Admin\AppData\Local\Temp\XClient.exe"1⤵
- Checks computer location settings
- 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\XClient.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
powershell.exe.log
StartupProfileData-NonInteractive
__PSScriptPolicyTest_bypppixa.r0n.ps1
memory/372-1-0x0000000000050000-0x0000000000082000-memory.dmp
memory/372-2-0x00007FFE0DD10000-0x00007FFE0E7D1000-memory.dmp
memory/372-0-0x00007FFE0DD13000-0x00007FFE0DD15000-memory.dmp
memory/372-32-0x00007FFE0DD10000-0x00007FFE0E7D1000-memory.dmp
memory/372-31-0x00007FFE0DD13000-0x00007FFE0DD15000-memory.dmp
memory/1984-3-0x00007FFE0DD10000-0x00007FFE0E7D1000-memory.dmp
memory/1984-18-0x00007FFE0DD10000-0x00007FFE0E7D1000-memory.dmp
memory/1984-15-0x00007FFE0DD10000-0x00007FFE0E7D1000-memory.dmp
memory/1984-14-0x00007FFE0DD10000-0x00007FFE0E7D1000-memory.dmp
memory/1984-9-0x00000254565B0000-0x00000254565D2000-memory.dmp