Analysis

  • max time kernel
    143s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    31-05-2024 01:30

General

  • Target

    4d6f6d174d9c49b0fe5e98959e7eb65e.exe

  • Size

    38KB

  • MD5

    4d6f6d174d9c49b0fe5e98959e7eb65e

  • SHA1

    21c18b4bfc0f13c72a472d004ec66f17c65b87e9

  • SHA256

    17411b5f0a6618aab02247492f9ed3afad7fe7a4209a2355bf4b7c471ebca4a9

  • SHA512

    18dfec2ab1760b0dd3d040a2e21f4de2fdba0e3decd594e0788a8c9fa098aba645f3bbca418657be99eb7a8ecebe924f1f59da6d9a1702e632079654c949a2be

  • SSDEEP

    768:rPDWCCqCFyNRXGkUpQxZDHxmwb+XFyO9BHx6NO/hgDrl841:rPDWPFyNRXG+ZjIiAFT99x6NO/4l841

Malware Config

Extracted

Family

xworm

Version

5.0

C2

by-mit.gl.at.ply.gg:3500

Mutex

EHm1yEhPOyWLIzo4

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

aes.plain

Signatures

  • Detect Xworm Payload 5 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.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 1 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.

  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 9 IoCs
  • Suspicious use of WriteProcessMemory 24 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

  • C:\Users\Admin\AppData\Local\Temp\4d6f6d174d9c49b0fe5e98959e7eb65e.exe
    "C:\Users\Admin\AppData\Local\Temp\4d6f6d174d9c49b0fe5e98959e7eb65e.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2008
    • 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\4d6f6d174d9c49b0fe5e98959e7eb65e.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2240
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '4d6f6d174d9c49b0fe5e98959e7eb65e.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1964
    • 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\program'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2532
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'program'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2412
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "program" /tr "C:\Users\Admin\AppData\Roaming\program"
      2⤵
      • Creates scheduled task(s)
      PID:2372
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {25FD996B-012D-486B-A909-D30C30DB8320} S-1-5-21-330940541-141609230-1670313778-1000:KXIPPCKF\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:560
    • C:\Users\Admin\AppData\Roaming\program
      C:\Users\Admin\AppData\Roaming\program
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2036
    • C:\Users\Admin\AppData\Roaming\program
      C:\Users\Admin\AppData\Roaming\program
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2748
    • C:\Users\Admin\AppData\Roaming\program
      C:\Users\Admin\AppData\Roaming\program
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1560

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

    Filesize

    7KB

    MD5

    e1ead6df16ac7220ded7771a040bbaa2

    SHA1

    b3164e71fd58752d86f05b34b526d15c7ee72830

    SHA256

    5335d25af6329808750c91ce1584d11b4a19b53ca70927abde291ef572234f62

    SHA512

    f5b2e5e1a9b6b8453adae4f881f749a412b0e906a33cd05d2efb10b987b770a7c71729e29e99c801cf99e1aeb1a753378efa1d685e25ab78ff8af34101a61726

  • C:\Users\Admin\AppData\Roaming\program

    Filesize

    38KB

    MD5

    4d6f6d174d9c49b0fe5e98959e7eb65e

    SHA1

    21c18b4bfc0f13c72a472d004ec66f17c65b87e9

    SHA256

    17411b5f0a6618aab02247492f9ed3afad7fe7a4209a2355bf4b7c471ebca4a9

    SHA512

    18dfec2ab1760b0dd3d040a2e21f4de2fdba0e3decd594e0788a8c9fa098aba645f3bbca418657be99eb7a8ecebe924f1f59da6d9a1702e632079654c949a2be

  • memory/1560-39-0x0000000000360000-0x0000000000370000-memory.dmp

    Filesize

    64KB

  • memory/1964-15-0x0000000002510000-0x0000000002518000-memory.dmp

    Filesize

    32KB

  • memory/1964-14-0x000000001B160000-0x000000001B442000-memory.dmp

    Filesize

    2.9MB

  • memory/2008-33-0x000007FEF6173000-0x000007FEF6174000-memory.dmp

    Filesize

    4KB

  • memory/2008-1-0x00000000012F0000-0x0000000001300000-memory.dmp

    Filesize

    64KB

  • memory/2008-2-0x000007FEF6170000-0x000007FEF6B5C000-memory.dmp

    Filesize

    9.9MB

  • memory/2008-34-0x000007FEF6170000-0x000007FEF6B5C000-memory.dmp

    Filesize

    9.9MB

  • memory/2008-0-0x000007FEF6173000-0x000007FEF6174000-memory.dmp

    Filesize

    4KB

  • memory/2036-32-0x0000000000BC0000-0x0000000000BD0000-memory.dmp

    Filesize

    64KB

  • memory/2240-8-0x0000000001E00000-0x0000000001E08000-memory.dmp

    Filesize

    32KB

  • memory/2240-7-0x000000001B280000-0x000000001B562000-memory.dmp

    Filesize

    2.9MB

  • memory/2748-37-0x0000000000C70000-0x0000000000C80000-memory.dmp

    Filesize

    64KB