Analysis

  • max time kernel
    170s
  • max time network
    177s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/01/2024, 22:33

General

  • Target

    2024-01-18_26dd727de9e61af6a1a11671b9219f93_cryptolocker.exe

  • Size

    124KB

  • MD5

    26dd727de9e61af6a1a11671b9219f93

  • SHA1

    9e4ff2037980cae7a90a5aa67b0b4e06b8378726

  • SHA256

    3d38ec4eedd5e014e22d5b9e7587c2399694743e8c79da7619db40a16af60303

  • SHA512

    c588600626b891de3667cc511fef41bf3c2a72aa7bf8f063e724d3fd3a983b45f468fcc1bb6fb68928ac42ce179863dadf03ffe19d45817e016e6385fe10078d

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOVbvh//LG:vCjsIOtEvwDpj5H9YvQd2RY

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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-18_26dd727de9e61af6a1a11671b9219f93_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-18_26dd727de9e61af6a1a11671b9219f93_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2368
    • 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:3012

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    124KB

    MD5

    ae162c922192575737def946a1122b25

    SHA1

    3f0b3238a7599f73aaa50e3135746c5f67e2c736

    SHA256

    061830d7796cb13b788d6ce7463ad1fbbba2c483ef9f8e7093b8b07b490f22f5

    SHA512

    be03b1ff2906bbb606c77ea6ec9a98016a3a52d205417cba788b7f26ce877a3c04610f27ba4278ff25ab05984fe5ef121bc5c9997f9587d7aad02ceadc712ad6

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2368-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2368-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2368-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/3012-18-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB