Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2024, 04:50

General

  • Target

    2024-06-02_f83e6ecd31e75a62d9d8337045579c97_cryptolocker.exe

  • Size

    24KB

  • MD5

    f83e6ecd31e75a62d9d8337045579c97

  • SHA1

    ccd788da80e1fb3991ab0d1e9ef0c45f8722e88c

  • SHA256

    5f838b4b1e182422b6fd26c45e8b250366fd2a938602f1551d5fbfce131f6094

  • SHA512

    d3dfd33203f69904296a98bb4eace63203bf9a15413ad1bd5ef69403146aeb13b3084d7616ad088a044984b817cc185e6956a3019da19ae93d23971d6c42f27d

  • SSDEEP

    384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HMJS:bVCPwFRo6CpwXFXSqQXfjAsJS

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-02_f83e6ecd31e75a62d9d8337045579c97_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_f83e6ecd31e75a62d9d8337045579c97_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3892
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:1564

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\hasfj.exe

          Filesize

          24KB

          MD5

          4a3defde3c75af9a87a61ff83377cb95

          SHA1

          786532c957f305f0508c40a57ca1167947d23f55

          SHA256

          f465350a7ce0298d4a68a655652dd199bb06f4b3edce8e67244dd5094930a726

          SHA512

          1e95269144a13b468323f8f4d17b6bb60e3d1b1240a7540845fce3cec2615744d256c32f84576fe0507988fb439f65336168e03393ac38eabca6312c23177fcd

        • memory/1564-18-0x0000000008000000-0x000000000800E000-memory.dmp

          Filesize

          56KB

        • memory/1564-26-0x0000000008000000-0x000000000800E000-memory.dmp

          Filesize

          56KB

        • memory/3892-0-0x0000000008000000-0x000000000800E000-memory.dmp

          Filesize

          56KB

        • memory/3892-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

          Filesize

          24KB

        • memory/3892-2-0x0000000003150000-0x0000000003156000-memory.dmp

          Filesize

          24KB

        • memory/3892-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

          Filesize

          24KB

        • memory/3892-16-0x0000000008000000-0x000000000800E000-memory.dmp

          Filesize

          56KB