Analysis

  • max time kernel
    117s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    30-05-2024 15:35

General

  • Target

    8fa8e02a32db4626290b784d771e051ad9d12f396c4e95267d8b072835e81be3.exe

  • Size

    39KB

  • MD5

    dfc191c2d6414fbefcda695fedcac614

  • SHA1

    a2f01a5c1aa6da85d2d3593b71b509f50a880367

  • SHA256

    8fa8e02a32db4626290b784d771e051ad9d12f396c4e95267d8b072835e81be3

  • SHA512

    59fd4f6d6384b3df8eb67b47477e0474053ca30dff6a4bcf057bb2f8fb2a8a57eb4c11d8308d410290d55cde3bb47dd654eef9a235787a3b3e86103e9dfff9f2

  • SSDEEP

    768:WG7+qmT8ztyh6pwDYvCL2v6hCuuJf27iJ1fFWPG9/T6OOwhbjib5:VfmT8ztyh6pwDnKwCuuJfBFv9/T6OOwY

Malware Config

Extracted

Family

xworm

Version

5.0

C2

20.ip.gl.ply.gg:4219

Mutex

sGAsjjcwpIJWoflZ

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

aes.plain

Signatures

  • Detect Xworm Payload 4 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 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: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 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\8fa8e02a32db4626290b784d771e051ad9d12f396c4e95267d8b072835e81be3.exe
    "C:\Users\Admin\AppData\Local\Temp\8fa8e02a32db4626290b784d771e051ad9d12f396c4e95267d8b072835e81be3.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1544
    • 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\8fa8e02a32db4626290b784d771e051ad9d12f396c4e95267d8b072835e81be3.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2628
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '8fa8e02a32db4626290b784d771e051ad9d12f396c4e95267d8b072835e81be3.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2504
    • 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\XClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2384
    • 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
      PID:2344
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
      2⤵
      • Creates scheduled task(s)
      PID:2156
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {984BA38A-E541-4845-9F37-7DC39ACD2C55} S-1-5-21-330940541-141609230-1670313778-1000:KXIPPCKF\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1620
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1804
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1284

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

    a503ffff10babc37a0daf1d6085812a7

    SHA1

    f1042d966b3a1d33dfd9c0b0d2dcbb6055d2dd27

    SHA256

    a3d988cb56045105ccca841ab7c4843bb1114699c85b215ad58e863125e8d4e2

    SHA512

    9a4c823d0c05873881941eeca0ef721b9470d55eafdd7b7e84915f3d7d4e655e537d2de6e81222451ef4c23391ef441c046103fc0803466ac977cea712d8b005

  • C:\Users\Admin\AppData\Roaming\XClient.exe

    Filesize

    39KB

    MD5

    dfc191c2d6414fbefcda695fedcac614

    SHA1

    a2f01a5c1aa6da85d2d3593b71b509f50a880367

    SHA256

    8fa8e02a32db4626290b784d771e051ad9d12f396c4e95267d8b072835e81be3

    SHA512

    59fd4f6d6384b3df8eb67b47477e0474053ca30dff6a4bcf057bb2f8fb2a8a57eb4c11d8308d410290d55cde3bb47dd654eef9a235787a3b3e86103e9dfff9f2

  • memory/1284-39-0x00000000003F0000-0x0000000000400000-memory.dmp

    Filesize

    64KB

  • memory/1544-31-0x000007FEF5C53000-0x000007FEF5C54000-memory.dmp

    Filesize

    4KB

  • memory/1544-1-0x00000000002A0000-0x00000000002B0000-memory.dmp

    Filesize

    64KB

  • memory/1544-0-0x000007FEF5C53000-0x000007FEF5C54000-memory.dmp

    Filesize

    4KB

  • memory/1544-32-0x000000001B180000-0x000000001B200000-memory.dmp

    Filesize

    512KB

  • memory/1544-30-0x000000001B180000-0x000000001B200000-memory.dmp

    Filesize

    512KB

  • memory/1804-36-0x0000000001050000-0x0000000001060000-memory.dmp

    Filesize

    64KB

  • memory/2504-15-0x0000000002270000-0x0000000002278000-memory.dmp

    Filesize

    32KB

  • memory/2504-14-0x000000001B290000-0x000000001B572000-memory.dmp

    Filesize

    2.9MB

  • memory/2628-8-0x0000000002030000-0x0000000002038000-memory.dmp

    Filesize

    32KB

  • memory/2628-7-0x000000001B220000-0x000000001B502000-memory.dmp

    Filesize

    2.9MB

  • memory/2628-6-0x0000000002860000-0x00000000028E0000-memory.dmp

    Filesize

    512KB