Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    27/01/2024, 22:24

General

  • Target

    2024-01-27_45d8480b7441a72773b5b8822d7b3368_cryptolocker.exe

  • Size

    62KB

  • MD5

    45d8480b7441a72773b5b8822d7b3368

  • SHA1

    23728153ff089a0ff4e1dbd25d29a2ebd4d91640

  • SHA256

    9010bc04bd117ab66d6036f025f273608b2a0a51652c6c4d9a293c41c8d42073

  • SHA512

    03477baccdbc454faeaeaf7b01ac5092ee893aa4caa68eaa5b9f8c3bc449f17205dbd53553c421838234d2907a8c656a3075e83244564e1a1536e6be1d3e30c3

  • SSDEEP

    768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mLZ5K7/:zj+soPSMOtEvwDpj4kpmeLmY

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
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-27_45d8480b7441a72773b5b8822d7b3368_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-27_45d8480b7441a72773b5b8822d7b3368_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2164
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2304

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    62KB

    MD5

    d7d67f00dfd8038dc839bec5067be6cc

    SHA1

    4b484b1cacbd335748dd8c18b9cca6c345afec7f

    SHA256

    ac09cde55d170f7c1be3278f28d4a5caa63410d6e875ade3ffa9d3648f9c786e

    SHA512

    84682b6ed14d2a02d6fa9c5fb4d3c24a8da3d86b5ec86be8b81e94b3508f719b36d6d8c050c08b2b6ac544c39328411a9c5f98f78526e549be1927e8fa17f469

  • memory/2164-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2164-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2164-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

    Filesize

    24KB

  • memory/2164-4-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2164-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2304-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2304-18-0x00000000005F0000-0x00000000005F6000-memory.dmp

    Filesize

    24KB

  • memory/2304-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2304-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB