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Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    29/05/2024, 15:42

General

  • Target

    2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe

  • Size

    68KB

  • MD5

    acfdf5809a6dadc684947ff3af9bb81a

  • SHA1

    d977194d6f342ab42c8290c803be60315b90375b

  • SHA256

    d09150c8e0bb5c305c5b9ba58446eb16b0d15b77d7e70f9b540aa4063d8b8691

  • SHA512

    e474f432292edbf7e962747ed24835b76a650ae58c223707386da4aa738d43e0f1d27b3bb4295243f2b47c9ae50657c83c774ca7770590c53e0625bb28124c41

  • SSDEEP

    1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLEk:aq7tdgI2MyzNORQtOflIwoHNV2XBFV78

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\2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:3008
    • 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:2540

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    68KB

    MD5

    5a9c8cc6628de759b72f1123f462c2ac

    SHA1

    f634037ec726e680a39e25e8c4fd38f29ea3b941

    SHA256

    2e09fa541af4ac44b7f357ea9fe70605b00e32e314a8ceedb13f1384c2d5528e

    SHA512

    6baed324d487091b92f267cc2e09cf2c22cf01e067d2e3126eca71f43c33d9d988d1f326c03b1e83c183b1210b5f408389714885565941bbabf4cbe47eb0f7a1

  • memory/2540-16-0x0000000000230000-0x0000000000236000-memory.dmp

    Filesize

    24KB

  • memory/3008-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

    Filesize

    24KB

  • memory/3008-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

    Filesize

    24KB

  • memory/3008-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB