Analysis

  • max time kernel
    139s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-02-2024 04:32

General

  • Target

    2024-02-03_9a7bee87396dee16a805d4ccba567874_cryptolocker.exe

  • Size

    73KB

  • MD5

    9a7bee87396dee16a805d4ccba567874

  • SHA1

    d42fa7deff769412f757c65ef285c22db4a23716

  • SHA256

    b96fd8d1b244f8c7b5800c999125b38324f2f1bc6a6cc496c6572d1dfdecb301

  • SHA512

    7e3bee8ba2f4ad10a67f49bc59026758790857f0e18383b7129682c8ccf885f47b7af8785384e99c0e115e3b8f8710ac46c62935060e9401f389bb5ab6c3d7f8

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3Ku0:ZVxkGOtEvwDpjcaw

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-02-03_9a7bee87396dee16a805d4ccba567874_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-03_9a7bee87396dee16a805d4ccba567874_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4188
    • 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:1980

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    73KB

    MD5

    bd16764db9892542807ce5b603c5d50d

    SHA1

    a5fd9e166f3d34baf6f2733be73b1199c65aa4d5

    SHA256

    03183613394e141d27776afc800aff123066df19fdf1a02bea6708bffb967c98

    SHA512

    c531c9a8c77983bfc072b9e55ea831766ebfb508f43f0bf51065253ef3c1ef0e806b3bb6c3a66ed5217872fdbdb9ad7d9167aeec2864cb8f5fd91e20c7b9005a

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1980-18-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/1980-19-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/1980-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4188-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/4188-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4188-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4188-3-0x0000000000720000-0x0000000000726000-memory.dmp

    Filesize

    24KB