Analysis

  • max time kernel
    150s
  • max time network
    151s
  • 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 15:31

General

  • Target

    XClient.exe

  • Size

    85KB

  • MD5

    007e1223120cd10fa02e2d371211d82a

  • SHA1

    519b63a096d4e9c12b8150467996c068e6ff756d

  • SHA256

    06d5934c528750f025b2f682a829d6e5b978238503c5e61a498da63a1958c0ac

  • SHA512

    4413c3e41237633153e90ab469af4d820aa51db88cc0df04c64af2c9ef25ab71cb7aa8b4b09814e35db4495986c6ab1e3199ec34cec35472830df5e361729210

  • SSDEEP

    1536:FHPavxx983DKYFV6MnbNE4VbR+rKb6lqMOV6Cgn3e//r:kvxYDKYX6MnbNEwbEpVOQCg0/r

Malware Config

Extracted

Family

xworm

C2

0.tcp.eu.ngrok.io:18473

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    Chrome.exe

Signatures

  • Detect Xworm Payload 1 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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 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).

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
    1⤵
    • Checks computer location settings
    • 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:2152
    • 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:3428
    • 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:4620
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\Chrome.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2692
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Chrome.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2644

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\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    9bc110200117a3752313ca2acaf8a9e1

    SHA1

    fda6b7da2e7b0175b391475ca78d1b4cf2147cd3

    SHA256

    c88e4bbb64f7fa31429ebe82c1cf07785c44486f37576f783a26ac856e02a4eb

    SHA512

    1f1af32aa18a8cbfcc65b0d4fb7e6ca2705f125eaa85789e981ee68b90c64522e954825abf460d4b4f97567715dfae8d9b0a25a4d54d10bc4c257c472f2e80fb

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

    Filesize

    944B

    MD5

    bb812b3e31d6bcd9430e1859693c9856

    SHA1

    2e2fd106bd4c2cfb827a2db22cdfc12d9a2aebe1

    SHA256

    36d73bca447ed277c72b5af7fe1e4f8d076e857fa82a7dd00e485138b9da673b

    SHA512

    8bb6f11f4a69f6b1b0a2ff36f45c646cb726933a613e7c4d4b7c20e6c042616047beb4057675687d9f96e564c141b1a4b6f50fe793ec163393d57124a06319f4

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_52tljbgs.53t.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/2152-1-0x00000000003A0000-0x00000000003BC000-memory.dmp

    Filesize

    112KB

  • memory/2152-2-0x00007FFC9BDF0000-0x00007FFC9C8B1000-memory.dmp

    Filesize

    10.8MB

  • memory/2152-0-0x00007FFC9BDF3000-0x00007FFC9BDF5000-memory.dmp

    Filesize

    8KB

  • memory/2152-58-0x00007FFC9BDF0000-0x00007FFC9C8B1000-memory.dmp

    Filesize

    10.8MB

  • memory/2152-57-0x00007FFC9BDF3000-0x00007FFC9BDF5000-memory.dmp

    Filesize

    8KB

  • memory/3428-8-0x00007FFC9BDF0000-0x00007FFC9C8B1000-memory.dmp

    Filesize

    10.8MB

  • memory/3428-18-0x00007FFC9BDF0000-0x00007FFC9C8B1000-memory.dmp

    Filesize

    10.8MB

  • memory/3428-15-0x00007FFC9BDF0000-0x00007FFC9C8B1000-memory.dmp

    Filesize

    10.8MB

  • memory/3428-14-0x00007FFC9BDF0000-0x00007FFC9C8B1000-memory.dmp

    Filesize

    10.8MB

  • memory/3428-13-0x000002265C140000-0x000002265C162000-memory.dmp

    Filesize

    136KB