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Analysis

  • max time kernel
    118s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    01/02/2024, 20:35

General

  • Target

    2024-02-01_52c751627e9d546142b28e0c03de90d4_cryptolocker.exe

  • Size

    35KB

  • MD5

    52c751627e9d546142b28e0c03de90d4

  • SHA1

    e842823e3836c954c71f961d7b74ed9decbc57be

  • SHA256

    6d618dc5a676318557d458e0fb4bd160a776eae392983a1c83cb2db2127ebe71

  • SHA512

    861080b336f971ab925f327ef08ee7e71754e04aa075a80c3491f92d6ac8cf5a2b9f3fba6c70563f5c3cc4f97c6b41c221ff3b4dd302ef20226fda1f1d0165c9

  • SSDEEP

    384:+cX+ni9VCr5nQI021q4VQBqURYpetOOtEvwDpjqIGRxzOP51FqQLicn3f3QJq:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnv0q

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 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_52c751627e9d546142b28e0c03de90d4_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-01_52c751627e9d546142b28e0c03de90d4_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2228
    • 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:2296

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab5073.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar5141.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

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

    Filesize

    35KB

    MD5

    0e7f6c8d03ca7892640aac11413b510c

    SHA1

    f5125f356f65e9bd7a753c8b84a05348f34fbdde

    SHA256

    46d556a8a4d58db7f2d37348ced713e5f038d3cc92f460ece3935e71a36189b6

    SHA512

    3773f4d3bcd744103671984f7481520629050786e4ab7c54572e487b2737455b9ae49a3ee25f05baac170cfdc2f170bac5b0a6123520c3da2fb20adb50f334e7

  • memory/2228-15-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2228-3-0x0000000000350000-0x0000000000356000-memory.dmp

    Filesize

    24KB

  • memory/2228-16-0x0000000000680000-0x000000000068E000-memory.dmp

    Filesize

    56KB

  • memory/2228-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2228-2-0x0000000000320000-0x0000000000326000-memory.dmp

    Filesize

    24KB

  • memory/2228-1-0x0000000000320000-0x0000000000326000-memory.dmp

    Filesize

    24KB

  • memory/2296-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2296-20-0x0000000000470000-0x0000000000476000-memory.dmp

    Filesize

    24KB

  • memory/2296-19-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2296-92-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB