Analysis
- max time kernel
100s - max time network
101s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
02/06/2024, 10:51
General
- Target TxDoomer_Loader_protected.exe
- Size 1.2MB
- Sample240602-myal6sbf92
- SHA256 ab696814ce3c10f86e8ad86a8c1cbb45f9ab0ceddc336ca15bce36b2f1a87a13
Malware Config
Extracted
-
xworm
-
Install_directory
%AppData%
-
install_file
svchost.exe
-
pastebin_url
https://pastebin.com/raw/Jt9Xgc6v
Signatures
- Detect Xworm Payload 8 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 4 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 14 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- 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 64 IoCs
- Suspicious use of AdjustPrivilegeToken 11 IoCs
- Suspicious use of FindShellTrayWindow 64 IoCs
- Suspicious use of SendNotifyMessage 64 IoCs
- Suspicious use of SetWindowsHookEx 3 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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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
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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
-
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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
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
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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 use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Replay Monitor
Loading Replay Monitor...
Downloads
powershell.exe.log
svchost.exe.log
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
__PSScriptPolicyTest_i11m0c0s.icw.ps1
svchost.lnk
svchost.exe
memory/964-143-0x0000020C9CF70000-0x0000020C9CF71000-memory.dmp
memory/964-153-0x0000020C9CF70000-0x0000020C9CF71000-memory.dmp
memory/964-142-0x0000020C9CF70000-0x0000020C9CF71000-memory.dmp
memory/964-144-0x0000020C9CF70000-0x0000020C9CF71000-memory.dmp
memory/964-154-0x0000020C9CF70000-0x0000020C9CF71000-memory.dmp
memory/964-148-0x0000020C9CF70000-0x0000020C9CF71000-memory.dmp
memory/964-149-0x0000020C9CF70000-0x0000020C9CF71000-memory.dmp
memory/964-150-0x0000020C9CF70000-0x0000020C9CF71000-memory.dmp
memory/964-151-0x0000020C9CF70000-0x0000020C9CF71000-memory.dmp
memory/964-152-0x0000020C9CF70000-0x0000020C9CF71000-memory.dmp
memory/1560-166-0x0000000000430000-0x00000000007DA000-memory.dmp
memory/1560-165-0x0000000000430000-0x00000000007DA000-memory.dmp
memory/1560-168-0x0000000000430000-0x00000000007DA000-memory.dmp
memory/1560-163-0x0000000000430000-0x00000000007DA000-memory.dmp
memory/2108-4-0x0000000005E00000-0x0000000005E66000-memory.dmp
memory/2108-5-0x0000000074830000-0x0000000074FE0000-memory.dmp
memory/2108-0-0x0000000000C10000-0x0000000000FBA000-memory.dmp
memory/2108-127-0x0000000074830000-0x0000000074FE0000-memory.dmp
memory/2108-3-0x0000000005D60000-0x0000000005DFC000-memory.dmp
memory/2108-102-0x000000007483E000-0x000000007483F000-memory.dmp
memory/2108-2-0x0000000000C10000-0x0000000000FBA000-memory.dmp
memory/2108-1-0x000000007483E000-0x000000007483F000-memory.dmp
memory/2108-55-0x0000000000C10000-0x0000000000FBA000-memory.dmp
memory/2260-27-0x000000006FF20000-0x000000006FF6C000-memory.dmp
memory/2260-38-0x0000000006E40000-0x0000000006E5E000-memory.dmp
memory/2260-53-0x0000000074830000-0x0000000074FE0000-memory.dmp
memory/2260-49-0x0000000007EC0000-0x0000000007EDA000-memory.dmp
memory/2260-48-0x0000000007DB0000-0x0000000007DC4000-memory.dmp
memory/2260-6-0x00000000052A0000-0x00000000052D6000-memory.dmp
memory/2260-7-0x00000000059A0000-0x0000000005FC8000-memory.dmp
memory/2260-8-0x0000000074830000-0x0000000074FE0000-memory.dmp
memory/2260-47-0x0000000007DA0000-0x0000000007DAE000-memory.dmp
memory/2260-9-0x0000000074830000-0x0000000074FE0000-memory.dmp
memory/2260-10-0x0000000005FD0000-0x0000000005FF2000-memory.dmp
memory/2260-11-0x0000000006170000-0x00000000061D6000-memory.dmp
memory/2260-46-0x0000000007D70000-0x0000000007D81000-memory.dmp
memory/2260-21-0x0000000074830000-0x0000000074FE0000-memory.dmp
memory/2260-45-0x0000000007E00000-0x0000000007E96000-memory.dmp
memory/2260-22-0x0000000006250000-0x00000000065A4000-memory.dmp
memory/2260-44-0x0000000007BD0000-0x0000000007BDA000-memory.dmp
memory/2260-23-0x0000000006840000-0x000000000685E000-memory.dmp
memory/2260-43-0x0000000007960000-0x000000000797A000-memory.dmp
memory/2260-42-0x0000000008230000-0x00000000088AA000-memory.dmp
memory/2260-24-0x0000000006870000-0x00000000068BC000-memory.dmp
memory/2260-26-0x0000000006E00000-0x0000000006E32000-memory.dmp
memory/2260-50-0x0000000007DF0000-0x0000000007DF8000-memory.dmp
memory/2260-37-0x0000000074830000-0x0000000074FE0000-memory.dmp
memory/2260-39-0x0000000074830000-0x0000000074FE0000-memory.dmp
memory/2260-41-0x0000000074830000-0x0000000074FE0000-memory.dmp
memory/2260-40-0x0000000007820000-0x00000000078C3000-memory.dmp
memory/2588-115-0x000000006FF20000-0x000000006FF6C000-memory.dmp
memory/2588-104-0x00000000056E0000-0x0000000005A34000-memory.dmp
memory/3492-81-0x0000000005BC0000-0x0000000005F14000-memory.dmp
memory/3492-92-0x000000006FF20000-0x000000006FF6C000-memory.dmp
memory/3644-69-0x000000006FF20000-0x000000006FF6C000-memory.dmp
memory/3644-80-0x0000000074830000-0x0000000074FE0000-memory.dmp
memory/3644-67-0x00000000056D0000-0x0000000005A24000-memory.dmp
memory/3644-57-0x0000000074830000-0x0000000074FE0000-memory.dmp
memory/3644-56-0x0000000074830000-0x0000000074FE0000-memory.dmp
memory/3736-135-0x0000000000430000-0x00000000007DA000-memory.dmp
memory/3736-136-0x0000000000430000-0x00000000007DA000-memory.dmp
memory/3736-137-0x0000000000430000-0x00000000007DA000-memory.dmp
memory/3736-141-0x0000000000430000-0x00000000007DA000-memory.dmp