Analysis

  • max time kernel
    132s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    23/04/2024, 07:31

General

  • Target

    2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe

  • Size

    43KB

  • MD5

    4546a0ea205dd30b184d0da986d0ca76

  • SHA1

    83bde00c12d292c75176fc3bf188aa48ec2fd788

  • SHA256

    6d2b2d8428cedb1220c36cec55c778a033db0563a289783a01af917e32b93b9e

  • SHA512

    970c51e1d213f604f4c12f743f4a5f6793d7334e97015b198d348588f93fee8563e119b98e7283939f75ab3f8780bf889d519a8c99f6d08c872dd9e3c918a1b9

  • SSDEEP

    768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqM:bc/y2lkF0+BeqM

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:3008
    • C:\Users\Admin\AppData\Local\Temp\rewok.exe
      "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of UnmapMainImage
      PID:1816

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    43KB

    MD5

    da6e801cf9b5509079a16c45fa454b6c

    SHA1

    88d79faacdaa7a99556feea882fca7809d0ce4de

    SHA256

    30b4376d5b6649c6784dfddc55f97703592404894a4c71d8d0c345f71ba37bb7

    SHA512

    235f4d53b6b8409bf55db839dd30b5a6c38dc7e87f8e0cf2745031a9f7950326798ee657d702be11902a0f8bd265e0381da2125cb474bab483323122765f2d5a

  • memory/1816-17-0x0000000000350000-0x0000000000356000-memory.dmp

    Filesize

    24KB

  • memory/3008-0-0x00000000003D0000-0x00000000003D6000-memory.dmp

    Filesize

    24KB

  • memory/3008-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/3008-7-0x00000000003D0000-0x00000000003D6000-memory.dmp

    Filesize

    24KB