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Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    13/03/2024, 08:37

General

  • Target

    2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe

  • Size

    100KB

  • MD5

    8e120f4431a4a5abd003815f78efd521

  • SHA1

    7c419de5e2656d789ee9ae5b0d981cd67ad9682a

  • SHA256

    8288147a339b64d93bc0eee11b9c109f6a72a2e2e1e432de592c7c85e552934f

  • SHA512

    806a467f3a50ca713c92f7fce73b967811468027d9a82303a4d198ece95dc73c327e3741efd8627783a0918483fec15f3894c211c3d2db1fa7ccc3a948296eb9

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviPeBO:AnBdOOtEvwDpj6z9

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 5 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 WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:640
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1720

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    100KB

    MD5

    86fd6dcd9725923795fffb2964e1c798

    SHA1

    9025a2a33423f79abb489dac5613525445b7fbc9

    SHA256

    6d76f96e930e25fbc9e79ceb7e8320323b3dfbf8c4b77fee03b480bd3f22fcae

    SHA512

    fcd3307fb53a81edf20dbb234fe7bde894e57a0c22c4c22c287aaff0d1b4763ee1d8fca7541f16d0ec6a45c8cc5da2207bc5ee29e072271d24838535c054c2ab

  • memory/640-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/640-1-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/640-4-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/640-2-0x0000000000330000-0x0000000000336000-memory.dmp

    Filesize

    24KB

  • memory/640-15-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1720-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1720-19-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/1720-18-0x0000000000270000-0x0000000000276000-memory.dmp

    Filesize

    24KB

  • memory/1720-26-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB