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Analysis

  • max time kernel
    8s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    15/05/2024, 05:25

General

  • Target

    2024-05-15_4dad7c98b99a1aa280fc4bebfeec33f7_cryptolocker.exe

  • Size

    44KB

  • MD5

    4dad7c98b99a1aa280fc4bebfeec33f7

  • SHA1

    456f19ea215ffab096bb715e76ac5b9c7eedfc73

  • SHA256

    08f29efa264e253d943127f1daa0276f1931b23f02d7cbcb90952ccb96e924ca

  • SHA512

    50d383b1d5f82e37d7cb8653b5192af4669af7b4e6c0c7c32e93c01d3c75ed20bb3ba561f190e727e854abd52e17271536f483e91a7a209fab64e5ce18d92b0d

  • SSDEEP

    768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAl:b/pYayGig5HjS3NPAl

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • 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\2024-05-15_4dad7c98b99a1aa280fc4bebfeec33f7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-15_4dad7c98b99a1aa280fc4bebfeec33f7_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2108
    • C:\Users\Admin\AppData\Local\Temp\retln.exe
      "C:\Users\Admin\AppData\Local\Temp\retln.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of UnmapMainImage
      PID:2456

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    44KB

    MD5

    dc8c5e67bedea4b578d0fb7c40cd60d2

    SHA1

    a33965d1448985aa50dc01cdc3b725ba4e56f9ee

    SHA256

    4df06a7f6e3a5569c49d6ddbccf1c115e1432228cf8112da69a0d02107ae6bb1

    SHA512

    48feed0c77b56bc291016c14feef84079f43b3d30403af300ff264e5902ae77dd78ecad5eae1bc054be3bb8a003070642fbd46d07a3cd8bf70e6050e4fc33bfc

  • memory/2108-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2108-0-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

    Filesize

    24KB

  • memory/2108-8-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

    Filesize

    24KB

  • memory/2456-23-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB