Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/06/2024, 20:04

General

  • Target

    2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe

  • Size

    37KB

  • MD5

    6ca26d69ffe24566a19c28869500b828

  • SHA1

    9d45579b8edebc6074f85f89870bc503736bd585

  • SHA256

    2dbd3499a95db5520d651f827c94496c89382759cf910c69ec27cc320710d391

  • SHA512

    338291199380940056088556d56f35afb54ee3618305abbd447038514590b53170909ea50c9915bd51e3a2aada074d94f08dd2aa1f4f904a179aa2f3ffe0c5ef

  • SSDEEP

    384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRSyc0:btB9g/WItCSsAGjX7e9N0hunRvc0

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • 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\2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3216
    • C:\Users\Admin\AppData\Local\Temp\gewos.exe
      "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:5076

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          37KB

          MD5

          c3764873bd8a61ddfac7b2567dc805a9

          SHA1

          223ef2d4277a9c572c5e09da0f91bd8182e9f755

          SHA256

          261ed4c7e64d90816e079122e2e8e891cb75fc513da9c226e94d0f171779c9eb

          SHA512

          616b0a624773a94d1019783ea4d4046c4473d2188792829c889d308b1e195823b02937c639eb570078f69ddd04c5a9ca73a5723ce0886cd0ad30d43fcf2b4ca4

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

          Filesize

          185B

          MD5

          562001dc7e0704b16170f68bed259c02

          SHA1

          0e98c6e294c299608d650314640ef8efe0c9f212

          SHA256

          4ebbb50c4055d9838d2c43058bbb0cff8ebd7eed465cefe4b9e2a639424759bc

          SHA512

          48c2aa64eb8f0805497bff4b7dffe34546a62cdb691329cc6e3c69bf6169e46c80405d0918776c755923a007f1e5224290788672de972fe567414c730252760a

        • memory/3216-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

          Filesize

          24KB

        • memory/3216-2-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

          Filesize

          24KB

        • memory/3216-1-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/5076-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

          Filesize

          24KB