Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
02/06/2024, 10:57
General
- Target TxDoomer_Loader_protected.exe
- Size 1.2MB
- Sample240602-m2eqasba9y
- SHA256 ab696814ce3c10f86e8ad86a8c1cbb45f9ab0ceddc336ca15bce36b2f1a87a13
Malware Config
Extracted
-
xworm
-
Install_directory
%AppData%
-
install_file
svchost.exe
-
pastebin_url
https://pastebin.com/raw/Jt9Xgc6v
Signatures
- Detect Xworm Payload 6 IoCs
- Xworm
Xworm is a remote access trojan written in C#.
- Command and Scripting Interpreter: PowerShell 1 TTPs 4 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
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of NtSetInformationThreadHideFromDebugger 18 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: EnumeratesProcesses 14 IoCs
- Suspicious use of AdjustPrivilegeToken 8 IoCs
- Suspicious use of SetWindowsHookEx 3 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\TxDoomer_Loader_protected.exe"C:\Users\Admin\AppData\Local\Temp\TxDoomer_Loader_protected.exe"1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\TxDoomer_Loader_protected.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'TxDoomer_Loader_protected.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\svchost.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Roaming\svchost.exeC:\Users\Admin\AppData\Roaming\svchost.exe1⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
C:\Users\Admin\AppData\Roaming\svchost.exeC:\Users\Admin\AppData\Roaming\svchost.exe1⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
powershell.exe.log
svchost.exe.log
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
__PSScriptPolicyTest_t53jkkmk.tnh.ps1
svchost.exe
memory/528-45-0x00000000077B0000-0x00000000077BE000-memory.dmp
memory/528-51-0x0000000073CF0000-0x00000000744A0000-memory.dmp
memory/528-10-0x0000000005930000-0x0000000005996000-memory.dmp
memory/528-9-0x0000000005260000-0x0000000005282000-memory.dmp
memory/528-11-0x0000000073CF0000-0x00000000744A0000-memory.dmp
memory/528-18-0x0000000073CF0000-0x00000000744A0000-memory.dmp
memory/528-17-0x0000000005C20000-0x0000000005F74000-memory.dmp
memory/528-8-0x0000000005300000-0x0000000005928000-memory.dmp
memory/528-23-0x0000000006230000-0x000000000624E000-memory.dmp
memory/528-24-0x0000000006260000-0x00000000062AC000-memory.dmp
memory/528-25-0x00000000067F0000-0x0000000006822000-memory.dmp
memory/528-26-0x000000006F3E0000-0x000000006F42C000-memory.dmp
memory/528-28-0x0000000073CF0000-0x00000000744A0000-memory.dmp
memory/528-37-0x00000000067D0000-0x00000000067EE000-memory.dmp
memory/528-38-0x0000000007210000-0x00000000072B3000-memory.dmp
memory/528-39-0x0000000073CF0000-0x00000000744A0000-memory.dmp
memory/528-40-0x0000000007BA0000-0x000000000821A000-memory.dmp
memory/528-41-0x0000000007560000-0x000000000757A000-memory.dmp
memory/528-42-0x00000000075E0000-0x00000000075EA000-memory.dmp
memory/528-43-0x0000000007810000-0x00000000078A6000-memory.dmp
memory/528-44-0x0000000007780000-0x0000000007791000-memory.dmp
memory/528-6-0x0000000004C90000-0x0000000004CC6000-memory.dmp
memory/528-46-0x00000000077C0000-0x00000000077D4000-memory.dmp
memory/528-47-0x00000000078D0000-0x00000000078EA000-memory.dmp
memory/528-48-0x0000000007800000-0x0000000007808000-memory.dmp
memory/528-7-0x0000000073CF0000-0x00000000744A0000-memory.dmp
memory/1476-65-0x000000006F3E0000-0x000000006F42C000-memory.dmp
memory/1476-53-0x0000000073CF0000-0x00000000744A0000-memory.dmp
memory/1476-54-0x0000000073CF0000-0x00000000744A0000-memory.dmp
memory/1476-76-0x0000000073CF0000-0x00000000744A0000-memory.dmp
memory/2016-152-0x0000000000780000-0x0000000000B2A000-memory.dmp
memory/2016-150-0x0000000000780000-0x0000000000B2A000-memory.dmp
memory/2016-154-0x0000000000780000-0x0000000000B2A000-memory.dmp
memory/2484-125-0x0000000000690000-0x0000000000A3A000-memory.dmp
memory/2484-4-0x0000000005DE0000-0x0000000005E46000-memory.dmp
memory/2484-3-0x0000000005D40000-0x0000000005DDC000-memory.dmp
memory/2484-5-0x0000000073CF0000-0x00000000744A0000-memory.dmp
memory/2484-127-0x0000000073CFE000-0x0000000073CFF000-memory.dmp
memory/2484-128-0x0000000073CF0000-0x00000000744A0000-memory.dmp
memory/2484-130-0x0000000007D80000-0x0000000007E12000-memory.dmp
memory/2484-131-0x00000000083D0000-0x0000000008974000-memory.dmp
memory/2484-2-0x0000000000690000-0x0000000000A3A000-memory.dmp
memory/2484-1-0x0000000073CFE000-0x0000000073CFF000-memory.dmp
memory/2484-0-0x0000000000690000-0x0000000000A3A000-memory.dmp
memory/3732-110-0x000000006F3E0000-0x000000006F42C000-memory.dmp
memory/4044-139-0x0000000000780000-0x0000000000B2A000-memory.dmp
memory/4044-142-0x0000000000780000-0x0000000000B2A000-memory.dmp
memory/4044-138-0x0000000000780000-0x0000000000B2A000-memory.dmp
memory/4860-88-0x000000006F3E0000-0x000000006F42C000-memory.dmp
memory/4860-86-0x0000000005F50000-0x00000000062A4000-memory.dmp