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Analysis

  • max time kernel
    121s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    01/02/2024, 09:30

General

  • Target

    2024-02-01_bc845a7cca42f79d4a85fdedb87cbcfd_cryptolocker.exe

  • Size

    46KB

  • MD5

    bc845a7cca42f79d4a85fdedb87cbcfd

  • SHA1

    2038bcaabdbf8c235c2532b88962ca5bd87c5256

  • SHA256

    faeac3b1852d3a62326e0d5f69f04f5247dad5bdca6aae00621cea9777e1ece5

  • SHA512

    723fe58fae42bcd3860532e9f58143b4c28ed35cac6c0c5562f239f32fdd2dd4218de5b8342df1548440f71e9ac733a598f727bae504d166c714ea95cb937490

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaV:xj+VGMOtEvwDpjy+TV

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-01_bc845a7cca42f79d4a85fdedb87cbcfd_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-01_bc845a7cca42f79d4a85fdedb87cbcfd_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2188
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2292

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab45D8.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar4629.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

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

    Filesize

    46KB

    MD5

    ddb8dbe08f10df6e38a0f05b1b97c5c0

    SHA1

    9a5ce6d65a700af8b70d311fb6b11a80c73efdeb

    SHA256

    d418fe98eaedd053c3e012a4b24aba4d7dd8e8a032370333e3d1b98d74253eac

    SHA512

    124e3517e0bf57bc085b34377652b5b2590e073b1529592e066c80f9c733ab946a396b47c6dfeb61ea918c5667b51bb3a253bf3579eec77fcb97dfc888b5c4f3

  • memory/2188-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2188-1-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/2188-2-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/2188-3-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2188-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2292-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2292-22-0x0000000000340000-0x0000000000346000-memory.dmp

    Filesize

    24KB

  • memory/2292-18-0x0000000000370000-0x0000000000376000-memory.dmp

    Filesize

    24KB

  • memory/2292-91-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB