Analysis

  • max time kernel
    1772s
  • max time network
    1626s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241211-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    13-12-2024 18:01

General

  • Target

    The-MALWARE-Repo-master/Worm/Vobfus/Vobus.exe

  • Size

    384KB

  • MD5

    966bb4bdfe0edb89ec2d43519c6de3af

  • SHA1

    7aa402e5241ff1ca2aeabeeda8928579902ad81a

  • SHA256

    ef12832d67a099282b6aad1bf2858375dd4b53c67638daf12a253bc9f918b77f

  • SHA512

    71b8cf14055caee1322976dc0ac777bdd0f9058ee37d30d7967bdc28d80f66d0d478c939501be5f9c70245e5b161c69ad36721a7c6454fea9abe76786934db66

  • SSDEEP

    3072:rtyFjchUoBENcPCkTaVYD3CbbTDMo6ZWbBrM/LqibDdjGRc32R7srGADv1FSJl:rqJVYD3KDN6ZWbBrM/GiDoO3IsrTvI

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 26 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\The-MALWARE-Repo-master\Worm\Vobfus\Vobus.exe
    "C:\Users\Admin\AppData\Local\Temp\The-MALWARE-Repo-master\Worm\Vobfus\Vobus.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1140
    • C:\Users\Admin\vjtul.exe
      "C:\Users\Admin\vjtul.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:3764

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\vjtul.exe

    Filesize

    384KB

    MD5

    5e6ae5329557166414235f03006c616a

    SHA1

    6ff7f32bb319b4e2f109645882d1fe0740ae7c6b

    SHA256

    41cacecba767fce666408e85fe805243f9923d247f5102a2fb88812116455ae2

    SHA512

    612b7706e2068c2f20d2cf1e06c1d50e3fd8295c6a5abfa3ecdbced2bde1eae02baf767071ba4927ca360164e11bb75a84db5b101443206e32800b9f98ffe64c