Analysis

  • max time kernel
    148s
  • max time network
    109s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-05-2024 02:35

General

  • Target

    XClient.exe

  • Size

    166KB

  • MD5

    999d5d3666bdd99abf4a36257f5f24d7

  • SHA1

    1f06da5c90907bd0f73bd4d2d14127d7d0ce6572

  • SHA256

    d78ae71f6b40da4cd04ad34ea6a3b64997feca98871e0e24736b41d0b16cba17

  • SHA512

    b72e2323a57c1b0f9da597b08ddd9c3ed67ea2397324ab13b0869afaa8d8f39bdf8849a6aff9f31951d4d1f940e464d1f9e1040c6c9590ee336c0f422203dc1f

  • SSDEEP

    3072:l+GO3oDVuy2cbozBJ3ROZJfvcBz65/M6If+3Js+3JFkKeTno:lTVupcbA60xBt25

Malware Config

Extracted

Family

xworm

Attributes
  • 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
    PID:2552
    • 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
      PID:3784
    • 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:2572

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    d85ba6ff808d9e5444a4b369f5bc2730

    SHA1

    31aa9d96590fff6981b315e0b391b575e4c0804a

    SHA256

    84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

    SHA512

    8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    d28a889fd956d5cb3accfbaf1143eb6f

    SHA1

    157ba54b365341f8ff06707d996b3635da8446f7

    SHA256

    21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

    SHA512

    0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0sua0toy.xgp.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/2552-1-0x0000000000B20000-0x0000000000B50000-memory.dmp

    Filesize

    192KB

  • memory/2552-2-0x00007FF996020000-0x00007FF996AE1000-memory.dmp

    Filesize

    10.8MB

  • memory/2552-0-0x00007FF996023000-0x00007FF996025000-memory.dmp

    Filesize

    8KB

  • memory/2552-32-0x00007FF996020000-0x00007FF996AE1000-memory.dmp

    Filesize

    10.8MB

  • memory/2552-31-0x00007FF996023000-0x00007FF996025000-memory.dmp

    Filesize

    8KB

  • memory/3784-13-0x000001946FD60000-0x000001946FD82000-memory.dmp

    Filesize

    136KB

  • memory/3784-18-0x00007FF996020000-0x00007FF996AE1000-memory.dmp

    Filesize

    10.8MB

  • memory/3784-15-0x00007FF996020000-0x00007FF996AE1000-memory.dmp

    Filesize

    10.8MB

  • memory/3784-14-0x00007FF996020000-0x00007FF996AE1000-memory.dmp

    Filesize

    10.8MB

  • memory/3784-3-0x00007FF996020000-0x00007FF996AE1000-memory.dmp

    Filesize

    10.8MB