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Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    14/02/2024, 03:51

General

  • Target

    2024-02-14_5feb0ba46daf0766a19f30fcbac026bf_cryptolocker.exe

  • Size

    35KB

  • MD5

    5feb0ba46daf0766a19f30fcbac026bf

  • SHA1

    668cfcfc35f13b36b757fe589ab744247debc6de

  • SHA256

    5d6bda56ba66b2bddb43b9c4c4155dc5a6a65e9d7bebe2994255b5408832ff5b

  • SHA512

    3b9c4799ad3736e1e6174c60683e33b72d51f9c436a4dcc469d7bcc7b594d42eb40e47fb4426bfc4a58544235e79cc6b9d3408d0166795e5e6adc8771f4b0313

  • SSDEEP

    384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKUC:btB9g/WItCSsAGjX7e9N0hunKUC

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\2024-02-14_5feb0ba46daf0766a19f30fcbac026bf_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_5feb0ba46daf0766a19f30fcbac026bf_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2168
    • C:\Users\Admin\AppData\Local\Temp\gewos.exe
      "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      PID:2912

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

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

    Filesize

    35KB

    MD5

    c1fad7f950a02177448acf601981ce9e

    SHA1

    c4b5091d5d04c145c1599fda59d9b942790c1c05

    SHA256

    60c26c1cacabac41c35aceb7bb87ca24b29a517e2ea4ce43b2984915497434a9

    SHA512

    3fe151e0d8b81c5cbccfb36006fa55a77ab51a41e1e47da3c6d7c9d3784d3935321e152820ac43a86847187dbdc1d78b3ceb55f642b9eee32d022873ee819b3f

  • memory/2168-0-0x00000000003C0000-0x00000000003C6000-memory.dmp

    Filesize

    24KB

  • memory/2168-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2168-8-0x00000000003C0000-0x00000000003C6000-memory.dmp

    Filesize

    24KB

  • memory/2912-18-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB