Analysis

  • max time kernel
    93s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-06-2024 07:38

General

  • Target

    2024-06-14_469da5abf8ca7db67c4f3777c5538c3f_cryptolocker.exe

  • Size

    43KB

  • MD5

    469da5abf8ca7db67c4f3777c5538c3f

  • SHA1

    9157fcf723e1f31633d5ffedb33408425ce3f80b

  • SHA256

    c3a5563c4ff6455c30d2fb42b3de6420128266a760a1719415e28886c9e72d4b

  • SHA512

    d7e836e7fdfdf0a3e41583f5c3bb1054aad618cfd9bf70a6efca29e8a14a57b5f9a94a9d5361e131c8d300101283adf34d3a1c5edb7a5bc1153a6400633c8059

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYsZnTl:i5nkFGMOtEvwDpjR+viHsH

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-06-14_469da5abf8ca7db67c4f3777c5538c3f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-14_469da5abf8ca7db67c4f3777c5538c3f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2324
    • 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:2412

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    43KB

    MD5

    a9add33f442c30bb9f6c9e20e1011a36

    SHA1

    78941c4976582fe2b976887d6d66def8f7fbb23f

    SHA256

    fb13b8e3f752db77c037ae9447052317b6ce533b8f94027066b5ab94b872da42

    SHA512

    776a8bca91af4a6c1a63680365a52aa4f7fabca448a4d6e365d664a13854e535e653fa4c3640de02bd18e018abe6f0b281d3066c2a5d8736227743b3ad47d6bc

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2324-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2324-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2324-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/2324-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2324-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2412-19-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2412-21-0x0000000000820000-0x0000000000826000-memory.dmp

    Filesize

    24KB

  • memory/2412-27-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/2412-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB