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Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/05/2024, 07:27

General

  • Target

    2024-05-15_9601ceed7e1925e7ba9d6ee3706843c8_cryptolocker.exe

  • Size

    43KB

  • MD5

    9601ceed7e1925e7ba9d6ee3706843c8

  • SHA1

    73dda60018347e1176edbf98d0cfe7bae76ed76a

  • SHA256

    9cd2bb9fce57cc0dd5f452f89042df07d2a7854708019038812d10cb3aa04dde

  • SHA512

    eb99c8842ef32944d403e85e9ea2c0dbcd2c96871f748000aa0915e7d3e9a1d4510901f459c854d529714ae85890662609635771fa8347008fa5c948da8ce8d0

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4REL+cc66Tc5:vj+jsMQMOtEvwDpj5HW5sc5

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\2024-05-15_9601ceed7e1925e7ba9d6ee3706843c8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-15_9601ceed7e1925e7ba9d6ee3706843c8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:396
    • 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:736

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    43KB

    MD5

    44272f3a80116fb2d71dd924c133e14d

    SHA1

    9453e662506ec03a2c7a70a83b0e0497363f223f

    SHA256

    d8dc225f665ec66b3a1b6b4f87a4e410f01c4f3fb2525127f716016123bb0452

    SHA512

    9d2d5bae3e4d6577ba47fcd4aecc88a6e75077b8ceb933bbef140ae2d833874af2d69870685dac57c976438ff863c7a47e0d6067d81c8b49777d6901148b763b

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/396-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/396-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/396-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/736-17-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB