Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    03/06/2024, 07:44

General

  • Target

    2024-06-03_c4975e854457c9f628aa386140f2fbcf_cryptolocker.exe

  • Size

    81KB

  • MD5

    c4975e854457c9f628aa386140f2fbcf

  • SHA1

    bec8be52e30c8b9c3305349ba81cb07d4d5afc9f

  • SHA256

    b7d231d5a9b1685b8fdcd0252d0ae5a6afec3969f5074ba6f1103b495deeb3a9

  • SHA512

    7dc51e640182cdf3fdbc3675d1b7a5a510b1a07755930af662b7cdee51a2e703721befef89bb0585213c086524753042755326b62204b821afde4e673331f7d6

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7Q6:zCsanOtEvwDpjm

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\2024-06-03_c4975e854457c9f628aa386140f2fbcf_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-03_c4975e854457c9f628aa386140f2fbcf_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2984
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:1320

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    81KB

    MD5

    6999ab76640afd6161238cb6f711e5ff

    SHA1

    7efb297da196375d9e44994db68d5c0bba7900b2

    SHA256

    2935d0f458973c599023b3e16064499061738d905394b9a35685f4c7f1c4bb97

    SHA512

    3651b3db01e8e574c575a0b6e599101d2c380630d5800b449b5d386822b761ed96da86cfd4460fb884cf42f3b22b42026dac786add3aa3d8ade5145da1e7fbef

  • memory/1320-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1320-26-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/1320-19-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/1320-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2984-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2984-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2984-9-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2984-2-0x00000000020B0000-0x00000000020B6000-memory.dmp

    Filesize

    24KB

  • memory/2984-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp

    Filesize

    64KB

  • memory/2984-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB