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Analysis

  • max time kernel
    133s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/05/2024, 01:22

General

  • Target

    2024-05-05_5e7f109421c3b5a0c108e4dba938fda0_cryptolocker.exe

  • Size

    82KB

  • MD5

    5e7f109421c3b5a0c108e4dba938fda0

  • SHA1

    204b4665556e9e91a2bd3844e235a5ea7a9ceaca

  • SHA256

    63e3b5e0e9f9d1c2d06a2bbd352a2710da5c3965de025646e2d5ac42ac844b3c

  • SHA512

    273ab1b360fcd815606b89245fcf8779188977e20c782d673eeaf34e9e0ea7a82e50097a95ab44efc0416fd396d63590ec29600bb1c22d42db4b703c909f9d6b

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNq5:vCjsIOtEvwDpj5H9YvQd2A

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-05_5e7f109421c3b5a0c108e4dba938fda0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-05_5e7f109421c3b5a0c108e4dba938fda0_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4924
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:1676

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    82KB

    MD5

    59de73c2ba99fe758d808f16e00b79d2

    SHA1

    201315661c2beae973ce3d49a246e1d59d311280

    SHA256

    d5db427e0630df00733d1f830f948c475f7008a420f9d4404b8e0c0753cc38e1

    SHA512

    b4b229303adf215507e3a39edd485b364a5ba3b264d02b6c6dfbbb74b860704b3f9db26acddb4deb06c78e849021508b05a3a832d5b7a146901c92db138b5aa8

  • C:\Users\Admin\AppData\Local\Temp\misids.exe

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1676-17-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/1676-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4924-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/4924-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4924-8-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB