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Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    16/04/2024, 03:38

General

  • Target

    2024-04-16_3a6775ae226e04b14fe463ce8d29ab3c_cryptolocker.exe

  • Size

    79KB

  • MD5

    3a6775ae226e04b14fe463ce8d29ab3c

  • SHA1

    6299999f9b41546363d2bc6a48efb09fb01cf13b

  • SHA256

    409b75bac91f495d5519e5c4297abb1d64983f5d2435c31e785d44a5f849c2ef

  • SHA512

    b21bb6cb6a5624132b892ae4bad10228eb7412c2557697f15c8e5070b9c693921f3b94415125ff1c5cc9f195ac2e037468b4103ed11dfef72c2c617de49dd54d

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7Qt:zCsanOtEvwDpjZ

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 6 IoCs
  • UPX dump on OEP (original entry point) 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 6 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\2024-04-16_3a6775ae226e04b14fe463ce8d29ab3c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-16_3a6775ae226e04b14fe463ce8d29ab3c_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1948
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2148

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\misid.exe

    Filesize

    79KB

    MD5

    7c539576c3c5842d70c17d0ab2905388

    SHA1

    78a56cd16acc9c8669ff394c1cf864458d977b7e

    SHA256

    31eb4e92494071e9e40813ed6aed20900443e7a1eda421da764fa21b02f62708

    SHA512

    0fa07b0eab2041d6963e4c7fc01a703d180e985a831b4e20de460af256f1f81078168c73773629a5b1d6d29a0ddcdc8c0bf931c7a8efcfd18fc91f05c0600cac

  • memory/1948-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1948-1-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/1948-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1948-8-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/1948-12-0x0000000002BC0000-0x0000000002BD0000-memory.dmp

    Filesize

    64KB

  • memory/1948-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2148-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2148-19-0x00000000004C0000-0x00000000004C6000-memory.dmp

    Filesize

    24KB

  • memory/2148-22-0x0000000000380000-0x0000000000386000-memory.dmp

    Filesize

    24KB

  • memory/2148-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB