Analysis

  • max time kernel
    118s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    25-01-2024 17:40

General

  • Target

    2024-01-25_e532c7ba364526f012989c5f2a7166d0_cryptolocker.exe

  • Size

    31KB

  • MD5

    e532c7ba364526f012989c5f2a7166d0

  • SHA1

    05c0bc1f599b0ec8a1fbe9d5e3b0446c728b9c48

  • SHA256

    83b8c1fb55cec16c3576078b6443e9b2848b444303d75fa181a432c0f9d7cd27

  • SHA512

    a8841a06c3ca70a0909cf9c0711e46e2a9e0573db8f3c94a369f97b7779f7a3678dfd44f8c49f2de77822e0d9d11863423ef08a009668ea28ce3aa3c2a7d9066

  • SSDEEP

    384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzo6cuM9Jm:bAvJCYOOvbRPDEgXRcuM9U

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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 4 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-25_e532c7ba364526f012989c5f2a7166d0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-25_e532c7ba364526f012989c5f2a7166d0_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2220
    • C:\Users\Admin\AppData\Local\Temp\demka.exe
      "C:\Users\Admin\AppData\Local\Temp\demka.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      PID:2744

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab4452.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar4511.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

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

    Filesize

    31KB

    MD5

    8f9b6156d6ada9bedd80c2c58333f658

    SHA1

    ec5e243f4470970192e5d159daa88becfcda1022

    SHA256

    a3b8eae3248f2d7834b357cdb7e1d56a0689a2e3b34fa3e71a280b2df72fd01e

    SHA512

    61b19e4a8f8ae9e467fca0179140f25e55620b467a67c2f04affa72a043064bded78331c91ff9fa5ef45240bbd14bf24f4e370d4980a1c6a8d9d376e0b885e07

  • memory/2220-0-0x00000000003C0000-0x00000000003C6000-memory.dmp

    Filesize

    24KB

  • memory/2220-2-0x00000000003C0000-0x00000000003C6000-memory.dmp

    Filesize

    24KB

  • memory/2220-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2744-18-0x0000000000360000-0x0000000000366000-memory.dmp

    Filesize

    24KB