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Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    25/05/2024, 00:55

General

  • Target

    2024-05-25_523e411b95e2f1331142174133befc62_cryptolocker.exe

  • Size

    53KB

  • MD5

    523e411b95e2f1331142174133befc62

  • SHA1

    130faa5ac9ccb777c2d7ac8400e15dacd6083fe8

  • SHA256

    daac2ad5a32d4a6cdadf40998e9795a6c1489ad33290049653fa9f7060323f6e

  • SHA512

    ad8ff9349616186922d1b819a64d41e393e4b7d5c3d0b999e9fc59c13145bc3666d7ab74699e50e1b108944e0054ee8bfdb208c240c51ba8b0f6e803aaafc6ee

  • SSDEEP

    768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOkgr:z6QFElP6n+gKmddpMOtEvwDpj31ikgr

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 4 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\2024-05-25_523e411b95e2f1331142174133befc62_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-25_523e411b95e2f1331142174133befc62_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2548

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    53KB

    MD5

    00bda3fcb46c0c4e19cef86e56b5bace

    SHA1

    7d4e109ba5ea80513c4ecb8a4097ba4bd47cf25d

    SHA256

    72c86859d056480b2137ece18c7987664797208aa7256b1521232bcabc48e341

    SHA512

    522140b9e8466e609177a64ca69d443a72d82ae56420915532ea4760374c377ab371531e243ff99191009c0f307242f5dccb2626cfacd9d36805b9d956b83f60

  • memory/2044-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2044-1-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/2044-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2044-8-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2548-17-0x0000000000350000-0x0000000000356000-memory.dmp

    Filesize

    24KB

  • memory/2548-24-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2548-25-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB