Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 21:39

General

  • Target

    2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe

  • Size

    24KB

  • MD5

    bb9a28ce80e90a534d32f806d8c4b729

  • SHA1

    b9cb5176be2035f7965255e3f52c19cae18eaead

  • SHA256

    8e7f65b7757f2c5dd10e43bb62e88531d6d6e9d4e293ee7b6133befffe24a178

  • SHA512

    9cdbf03cdac5e5f050af0048557bb86d00ecd1e5f1c6ca87a736b2b5a4ee6701eb725dbd0a47060c4ef65338b7819eb7e667bb98295aa34d9af8292fc5a61b07

  • SSDEEP

    384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HMJ1p:bVCPwFRo6CpwXFXSqQXfjAsJb

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\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4676
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:220

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          25KB

          MD5

          f58d74c8d2bf1cf499c288fc12f51c8a

          SHA1

          ed63d8015129e3dfbe498d9713179062a98393c8

          SHA256

          12917caeba52726a1fc9fe5ebd292c84e61b172825097654a2ab8749254a431f

          SHA512

          9a30f01a54b1e1a271f14323b8e95785c27356e94aaca7582f1a054f0209e9fc3d9d0c8e8f49b0c314ab3ad117b918493b8e1cfc4b7ae2841a5ff8c357ca1a00

        • memory/220-19-0x0000000008000000-0x000000000800E000-memory.dmp

          Filesize

          56KB

        • memory/220-21-0x0000000003010000-0x0000000003016000-memory.dmp

          Filesize

          24KB

        • memory/220-27-0x0000000002D60000-0x0000000002D66000-memory.dmp

          Filesize

          24KB

        • memory/220-28-0x0000000008000000-0x000000000800E000-memory.dmp

          Filesize

          56KB

        • memory/4676-0-0x0000000008000000-0x000000000800E000-memory.dmp

          Filesize

          56KB

        • memory/4676-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

          Filesize

          24KB

        • memory/4676-2-0x0000000003150000-0x0000000003156000-memory.dmp

          Filesize

          24KB

        • memory/4676-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

          Filesize

          24KB

        • memory/4676-18-0x0000000008000000-0x000000000800E000-memory.dmp

          Filesize

          56KB