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Analysis

  • max time kernel
    152s
  • max time network
    162s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    07/03/2024, 00:46

General

  • Target

    2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe

  • Size

    46KB

  • MD5

    b048135e1c0f3c38d8321712bbfa904d

  • SHA1

    30546109bc4ed05b61ccc35a09dac9c7d3fd689c

  • SHA256

    938bd70377ca3936a8f846ef3ebcf6b7e199ed19fb7388a9c7ec3afe9b2db073

  • SHA512

    2e91dd75babeafb6ca9698f617826d37156fc6f31dec28f02915546e85a0160df44b0bb5beab7dc8f960db0625cccf31806b59e771b618aee68058ee4f008a7a

  • SSDEEP

    768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxO:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xb

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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\2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2292
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of UnmapMainImage
      PID:2812

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    46KB

    MD5

    7865de2766cd5fbfd45da24a4b1efa76

    SHA1

    57c10536d619539176d3da108fc129732bc6a7f7

    SHA256

    d4380640f8f30a8c2a05abd0657e31d7ae40118c151d102ddf0e0a4ed89c625a

    SHA512

    57ef8be3136a8a33783458109e2d07ee88ae97b438c36ff2e836bb918cce49281274ed696739a0cd9d3d6d3bad08ee0a0fab3bd1fa0d8488d97097039be6c66f

  • memory/2292-0-0x00000000001C0000-0x00000000001C6000-memory.dmp

    Filesize

    24KB

  • memory/2292-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2292-8-0x00000000001C0000-0x00000000001C6000-memory.dmp

    Filesize

    24KB

  • memory/2812-16-0x0000000000330000-0x0000000000336000-memory.dmp

    Filesize

    24KB