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Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/03/2024, 16:48

General

  • Target

    2024-03-19_9bb52440893b084b6059360d9c9b692c_cryptolocker.exe

  • Size

    82KB

  • MD5

    9bb52440893b084b6059360d9c9b692c

  • SHA1

    8494ccc925f521f833083d249d9cbcc6b6265262

  • SHA256

    3f7bc4a545ff3b0a1d5d933219b551b6d9267123db50a44b12064f4581fccdb9

  • SHA512

    39380b11be1a3eb46e905ec76057188f8fb791963c46352e8ab7ca22af52fbd8aed47069b68183a74f4f9255082670601d244110037142c909bd6db9b4cea550

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNB8:vCjsIOtEvwDpj5H9YvQd2U

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-19_9bb52440893b084b6059360d9c9b692c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-19_9bb52440893b084b6059360d9c9b692c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2360
    • 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:1408

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    82KB

    MD5

    2adeac3d4046af979506294ae7dca483

    SHA1

    8da210dc38d6eaab9d77f8e918573060604c1a49

    SHA256

    42785fc81016c9fdfcabbeb5b7d7bfb38e214a2556e52cb6918d6bd3f6b70062

    SHA512

    b78f4042d6453aec4e5fadee9720de468fe6eeee07040d6761e05c1cd5ced20a630509407b9d511ffd177daad205829cb015e6514ffbd42a4bbe9e3b5fbfd946

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1408-17-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/1408-20-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/2360-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2360-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2360-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB