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Analysis

  • max time kernel
    122s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    11/05/2024, 14:11

General

  • Target

    2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe

  • Size

    55KB

  • MD5

    d3264329e9bb0a21b4b8dbbb43402578

  • SHA1

    5e7d41c10e4b5c56ce632e988a25a8c42e75701b

  • SHA256

    d10b5e45b45f43ccdc91bb7d53637402ca98e934eb294898e2241a2f40fea1f7

  • SHA512

    69a7e0524e66929fab9266c4cb11baaa4fc754169b3e73191dcac6af9148272fe27d87c0ed5a44e0b79baf4c3fce53a6c61be1464b592a5ecf30b7ad2813f093

  • SSDEEP

    768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjl+:bP9g/xtCS3Dxx0p

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 3 IoCs
  • UPX dump on OEP (original entry point) 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 3 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 UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2856
    • C:\Users\Admin\AppData\Local\Temp\gewos.exe
      "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of UnmapMainImage
      PID:2548

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    56KB

    MD5

    e34a2d579e6ee9c2fc237c7ff46265d0

    SHA1

    bc2ce943a456072b82fba6037de4315c76902d3b

    SHA256

    926085384ec421b6d85ca3a4d52aa3f014a2ad114a926d16921166578f96bbe3

    SHA512

    07b21e898ce6d2d6819308f71b42ae8596bfd0d6bd8b6a19a2c715de3653df6ba7e12c6c3a9541dfc034701561e15adac5e76a1a81b1b146ff2213955f5e936b

  • memory/2548-16-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/2548-25-0x00000000003B0000-0x00000000003B6000-memory.dmp

    Filesize

    24KB

  • memory/2856-0-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/2856-1-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/2856-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2856-9-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB