Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-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 2 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
  • Executes dropped EXE 2 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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 10 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⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3932
    • 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:1964
    • 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:1772
    • 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:3324
    • 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:2880
    • 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:3948
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4036 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1532
    • C:\Users\Admin\AppData\Roaming\program
      C:\Users\Admin\AppData\Roaming\program
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3436
    • C:\Users\Admin\AppData\Roaming\program
      C:\Users\Admin\AppData\Roaming\program
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1712

    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\CLR_v4.0\UsageLogs\program.log

      Filesize

      654B

      MD5

      2ff39f6c7249774be85fd60a8f9a245e

      SHA1

      684ff36b31aedc1e587c8496c02722c6698c1c4e

      SHA256

      e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

      SHA512

      1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

    • 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\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

      50d3033f2bc3a3774c469d03e71a79a9

      SHA1

      22027b1d52085de99b3bffa276530fea5d961471

      SHA256

      2987e99ec7fa17bd4ab7de3cb4dc62645e1052012a5a357904d6fc6db9054147

      SHA512

      ecf7ab1a9e4192454a3e24c60453fd702a8c648e00078fc933b9182f4a3d3c10c6f5da622a5729b35727e6ddc8837029caddcaf76f56e805b9744253b56da5d8

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0obcglmu.q3y.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

      Filesize

      38KB

      MD5

      4d6f6d174d9c49b0fe5e98959e7eb65e

      SHA1

      21c18b4bfc0f13c72a472d004ec66f17c65b87e9

      SHA256

      17411b5f0a6618aab02247492f9ed3afad7fe7a4209a2355bf4b7c471ebca4a9

      SHA512

      18dfec2ab1760b0dd3d040a2e21f4de2fdba0e3decd594e0788a8c9fa098aba645f3bbca418657be99eb7a8ecebe924f1f59da6d9a1702e632079654c949a2be

    • memory/1772-34-0x0000025AFB070000-0x0000025AFB1BE000-memory.dmp

      Filesize

      1.3MB

    • memory/1964-13-0x00007FFC8CBB0000-0x00007FFC8D671000-memory.dmp

      Filesize

      10.8MB

    • memory/1964-14-0x000002782CAB0000-0x000002782CAD2000-memory.dmp

      Filesize

      136KB

    • memory/1964-20-0x000002782CB20000-0x000002782CC6E000-memory.dmp

      Filesize

      1.3MB

    • memory/1964-21-0x00007FFC8CBB0000-0x00007FFC8D671000-memory.dmp

      Filesize

      10.8MB

    • memory/1964-16-0x00007FFC8CBB0000-0x00007FFC8D671000-memory.dmp

      Filesize

      10.8MB

    • memory/1964-15-0x00007FFC8CBB0000-0x00007FFC8D671000-memory.dmp

      Filesize

      10.8MB

    • memory/1964-3-0x00007FFC8CBB0000-0x00007FFC8D671000-memory.dmp

      Filesize

      10.8MB

    • memory/1964-17-0x00007FFC8CBB0000-0x00007FFC8D671000-memory.dmp

      Filesize

      10.8MB

    • memory/2880-58-0x0000019AC3D30000-0x0000019AC3E7E000-memory.dmp

      Filesize

      1.3MB

    • memory/3324-46-0x000002456A100000-0x000002456A24E000-memory.dmp

      Filesize

      1.3MB

    • memory/3932-0-0x00007FFC8CBB3000-0x00007FFC8CBB5000-memory.dmp

      Filesize

      8KB

    • memory/3932-60-0x00007FFC8CBB3000-0x00007FFC8CBB5000-memory.dmp

      Filesize

      8KB

    • memory/3932-63-0x00007FFC8CBB0000-0x00007FFC8D671000-memory.dmp

      Filesize

      10.8MB

    • memory/3932-2-0x00007FFC8CBB0000-0x00007FFC8D671000-memory.dmp

      Filesize

      10.8MB

    • memory/3932-1-0x0000000000AA0000-0x0000000000AB0000-memory.dmp

      Filesize

      64KB