Analysis

  • max time kernel
    93s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-05-2024 21:24

General

  • Target

    2024-05-29_086a36a16bd09f5205f2d28957847f9e_cryptolocker.exe

  • Size

    71KB

  • MD5

    086a36a16bd09f5205f2d28957847f9e

  • SHA1

    4a0e417ed6f0f38dfc6f4db02b6fe6f6b75bbc8a

  • SHA256

    e838bca64ad64770bc2d31a027006a7b8cfb424f2d40ca622c810fd30a71a7de

  • SHA512

    4ec4bb05a386f74b0eb3d1a6216676251e357841711c05e9f6477ee939b7771a76d3b7bac0c22d3ab011ad233e851e4f6c7bcb8c4055ccc24fa1c85de3cb78a8

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4ZPsED3VK2+ZtyOjgO4r9vFAg2rq2g1B/R8:vj+jsMQMOtEvwDpj5HZYTjipvF24ty

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\2024-05-29_086a36a16bd09f5205f2d28957847f9e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-29_086a36a16bd09f5205f2d28957847f9e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1572
    • 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:3364

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    71KB

    MD5

    898bb05c5437a80c0fb7dfac0eefa04e

    SHA1

    addc98d2befef4720485b751765e8835b1398fcf

    SHA256

    c7ac18b88f2c6c56af18e8fc2db90cb953eee7f4f97caab7dedaf6dce7380bff

    SHA512

    6cb74d988ad8721771453652f5328e81c654ddcbc64211f5cb9ce553ef8055828ff484c23cf2d33e04f7181352a551ff4ed9d536f9455562bbe74108f66e4248

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1572-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1572-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1572-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3364-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/3364-23-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB