Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/03/2024, 01:57

General

  • Target

    2024-03-06_c5c07924cdeb9ebfc73f9cc52c73ada1_cryptolocker.exe

  • Size

    81KB

  • MD5

    c5c07924cdeb9ebfc73f9cc52c73ada1

  • SHA1

    22400e1bb324abd0eb5a1b714178c92e243f397e

  • SHA256

    9e2b31e563ee3f8631a61d27b79fb96ed7ece55774e01628a56b83c39df341fe

  • SHA512

    370f06f2631e1fa2c71a563271a5c830578d42e5184dc12e323d45fd8d0d2771ed252e2777acf506ca3b5f3e946c1e5de9b307f26dd0a6673d674f70792cbf2d

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky2fA:zCsanOtEvwDpje

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 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\2024-03-06_c5c07924cdeb9ebfc73f9cc52c73ada1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-06_c5c07924cdeb9ebfc73f9cc52c73ada1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2260
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:4216

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          82KB

          MD5

          4dc05e209e13477e257ccef144ce06c1

          SHA1

          c0b2f38644b0a5e98e47685e1977247c70b6ea6c

          SHA256

          7ae2d06a77038154d9fcb1a829e5bbbb7e5762b4f1911d76e4cd7b599963a83e

          SHA512

          57197d5c9f5b75edf8dac9bb72e8d92f265815273ea2adf568bab171d6dc202f31bc67dcb262bf9537096a99098e428f94ba8a4ac33b1fd5e6592376f19b39ce

        • memory/2260-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2260-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/2260-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/2260-3-0x0000000002230000-0x0000000002236000-memory.dmp

          Filesize

          24KB

        • memory/2260-18-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4216-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4216-20-0x0000000002000000-0x0000000002006000-memory.dmp

          Filesize

          24KB

        • memory/4216-22-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/4216-27-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB