Analysis

  • max time kernel
    145s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/02/2024, 06:34

General

  • Target

    2024-02-04_8670cc4441c093f75bfdf215afb2041d_cryptolocker.exe

  • Size

    40KB

  • MD5

    8670cc4441c093f75bfdf215afb2041d

  • SHA1

    6a51aed3cfafe6d5cde947ac86d7cac3918c6967

  • SHA256

    ddeb47d972c0c3dc373920d51778b97497986004d47d940e195ecfbaaefda14a

  • SHA512

    00a2111122df8325835c07720a5adf78249563d2c70da5d52a41ffbf10b425a1fa97c7358210d95356cee820e27a5f299121f0caa3bc6302126d51f7bff8e966

  • SSDEEP

    768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqmY:bc/y2lkF0+BjV

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Checks computer location settings 2 TTPs 1 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\2024-02-04_8670cc4441c093f75bfdf215afb2041d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-04_8670cc4441c093f75bfdf215afb2041d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2244
    • C:\Users\Admin\AppData\Local\Temp\rewok.exe
      "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
      2⤵
      • Executes dropped EXE
      PID:956

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    a67b4dcde1ca7ab0525601bc4bfca2d3

    SHA1

    f06914e17faae502603bf27ef9ad944dbd66f4c1

    SHA256

    79f7a28ddf62c4d262e7a8e77eac64c2c12b52372f28cc1101d787d3379fbf96

    SHA512

    e73a176f17684d99414ba98d88a7309ed3e178aaec18fff88a2553ea59d98cd84a86191c5793d1c5bfe36dcdd629254952728f911b9eb175527e98c2d7085945

  • memory/956-21-0x0000000002090000-0x0000000002096000-memory.dmp

    Filesize

    24KB

  • memory/2244-0-0x0000000002250000-0x0000000002256000-memory.dmp

    Filesize

    24KB

  • memory/2244-1-0x0000000002250000-0x0000000002256000-memory.dmp

    Filesize

    24KB

  • memory/2244-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB