Analysis

  • max time kernel
    130s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-05-2024 14:59

General

  • Target

    XClient.exe

  • Size

    178KB

  • MD5

    f77e3c044bfaa316282635c965671e0d

  • SHA1

    4b2dd8aaa5d35e348c5dc4a9db7a6ad8cf611566

  • SHA256

    da22cbb2cfd0a80a91deb74a01a1c7750629952cafb9e2a253686ec93fcd3c18

  • SHA512

    8da3ad0b3c57537007f4d913a958e7c956d01d9a72956030bcc5e2b4edf3c10ad532f43745533ad1c58009d73b47a1fadc285efe7ed46fa2deb711dd2015e7d1

  • SSDEEP

    3072:43ePccS5wEsJQlTJblxxx1VhOfJ+JTvxBz65/M6If+3Js+3JFkKeTno:4VzfTJblvzVJTZxBt25

Malware Config

Extracted

Family

xworm

C2

enough-washer.gl.at.ply.gg:64300

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:4312
    • 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:4852
    • 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:4276

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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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

    6d3e9c29fe44e90aae6ed30ccf799ca8

    SHA1

    c7974ef72264bbdf13a2793ccf1aed11bc565dce

    SHA256

    2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

    SHA512

    60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3ud0wmjv.o3q.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/4312-0-0x00007FFEEE1A3000-0x00007FFEEE1A5000-memory.dmp

    Filesize

    8KB

  • memory/4312-2-0x00007FFEEE1A0000-0x00007FFEEEC61000-memory.dmp

    Filesize

    10.8MB

  • memory/4312-1-0x0000000000410000-0x0000000000442000-memory.dmp

    Filesize

    200KB

  • memory/4312-31-0x00007FFEEE1A3000-0x00007FFEEE1A5000-memory.dmp

    Filesize

    8KB

  • memory/4312-32-0x00007FFEEE1A0000-0x00007FFEEEC61000-memory.dmp

    Filesize

    10.8MB

  • memory/4852-3-0x00007FFEEE1A0000-0x00007FFEEEC61000-memory.dmp

    Filesize

    10.8MB

  • memory/4852-4-0x00007FFEEE1A0000-0x00007FFEEEC61000-memory.dmp

    Filesize

    10.8MB

  • memory/4852-10-0x0000024AEB930000-0x0000024AEB952000-memory.dmp

    Filesize

    136KB

  • memory/4852-15-0x00007FFEEE1A0000-0x00007FFEEEC61000-memory.dmp

    Filesize

    10.8MB

  • memory/4852-18-0x00007FFEEE1A0000-0x00007FFEEEC61000-memory.dmp

    Filesize

    10.8MB