Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2024, 04:49

General

  • Target

    2024-06-02_f3eccf26d991c65c06009f5875dccfd8_cryptolocker.exe

  • Size

    52KB

  • MD5

    f3eccf26d991c65c06009f5875dccfd8

  • SHA1

    9e29b1d80216a109becddb8335c6b5cf7068a5c5

  • SHA256

    b135faf0ee4a40df9cf3bd91029ba09a54e2e6d19e2aed3f8c81a07c3f1313e2

  • SHA512

    7b1aa064e4ab2892c9fe515c2d38591c9b37d655bca0374dc24ff587d7baf6a50f1d67c04cb2eabd03430feebcedc8d74dbc617e1b08e30ce31a7c65bfb2df8c

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRY+iyyO:6j+1NMOtEvwDpjr8hhXy+iyyO

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-02_f3eccf26d991c65c06009f5875dccfd8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_f3eccf26d991c65c06009f5875dccfd8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4228
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:4696

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    52KB

    MD5

    096ac6c4aa41c0858cef64f780634d7d

    SHA1

    8efb581456328f80d750ad2a910692e0eb6fac04

    SHA256

    4249be806a73d931cfca80b59253bcb197208ed038c8d10cff91961947ca1765

    SHA512

    9608263565f912a64056270b210ee47303add56ccedd608a0ed8cdc0413f83dbd6db5f40ef265c5ffbb89a8d06f1afd82c5612bea909d8efd06c53571cc6d028

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4228-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4228-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4228-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4228-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4228-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4696-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4696-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB