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
    20/05/2024, 00:34

General

  • Target

    2024-05-20_389b6d1cce9f286045c25cea2b223fce_cryptolocker.exe

  • Size

    23KB

  • MD5

    389b6d1cce9f286045c25cea2b223fce

  • SHA1

    87872e6ce35e367581a49b4fcc0f9141d592d6b6

  • SHA256

    abae7d5289924b2e489cc4bbc94f34d507caf85e7da433f4d56a6730c5e3d54f

  • SHA512

    0d67eda7d2cded7f1ed40e1ef8bccb51337f6531f2a2785aa8bc988c2c6e63d6530ec5c825b18e055dc7c423baac90321cde5b8da0a9c9a51c01c257bba22c48

  • SSDEEP

    384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HMJ26:bVCPwFRo6CpwXFXSqQXfjAsJN

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\2024-05-20_389b6d1cce9f286045c25cea2b223fce_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-20_389b6d1cce9f286045c25cea2b223fce_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3220
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:3672

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          24KB

          MD5

          e5fa24535c6c70f6bce5bb761110277c

          SHA1

          126bab1f98fd6789004aeece01d9db14a2b4be17

          SHA256

          9898b3d508cf557be265c6323db686c13d91f8a4d3775b37d26fcf5635fde92a

          SHA512

          aa40a35725832941cd02a16038521b19314e9207dde18fe333ff6e31cbcf893094dcb870b9eb0fb035e04529eaf625483e980bba1d6d5e9bbbf770516b73bf5c

        • memory/3220-0-0x0000000008000000-0x000000000800E000-memory.dmp

          Filesize

          56KB

        • memory/3220-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

          Filesize

          24KB

        • memory/3220-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

          Filesize

          24KB

        • memory/3220-2-0x0000000003150000-0x0000000003156000-memory.dmp

          Filesize

          24KB

        • memory/3220-18-0x0000000008000000-0x000000000800E000-memory.dmp

          Filesize

          56KB

        • memory/3672-17-0x0000000008000000-0x000000000800E000-memory.dmp

          Filesize

          56KB

        • memory/3672-20-0x0000000002190000-0x0000000002196000-memory.dmp

          Filesize

          24KB

        • memory/3672-26-0x0000000002120000-0x0000000002126000-memory.dmp

          Filesize

          24KB

        • memory/3672-27-0x0000000008000000-0x000000000800E000-memory.dmp

          Filesize

          56KB