Analysis

  • max time kernel
    135s
  • max time network
    166s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-05-2024 01:16

General

  • Target

    2024-05-10_adecd416328ad2fe4080d6b5b76b724e_cryptolocker.exe

  • Size

    52KB

  • MD5

    adecd416328ad2fe4080d6b5b76b724e

  • SHA1

    5560299b106d4eae7b56c7d2844d1a61afc5aa27

  • SHA256

    d6fdcaaed4a15a4366521035782cda6b81e88b26f12408ab2bdf878397391fc6

  • SHA512

    c5fb41a0e904e08fb5d7e30868a6599d7156371cd51a3d924ac39b3d1f806f517459935f908999aff62ce5508835c91ed41584cb12ffdc3732e1ee063b0287fb

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRkHy:6j+1NMOtEvwDpjr8hhXiS

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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\2024-05-10_adecd416328ad2fe4080d6b5b76b724e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-10_adecd416328ad2fe4080d6b5b76b724e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2428
    • 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:3264
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4472 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:5532

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      53KB

      MD5

      63690bc3a49e202b1c84266c9f7e191c

      SHA1

      232acd6ab7f120b3357b44f2da67ab4061d99418

      SHA256

      c6a9a7d5088a29ad5e577a6cee7c1291b99d93da2989b1971de9a62a8ab8e989

      SHA512

      6fbc90af4ad29d7c21e9562b13e2aa4f7a57e22e372b7cb1919fd9296a6cd50a7a64906bcb160e6101e18bf3ab1617e3b67806826694ce7050e0e90f928e7ba1

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/2428-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/2428-1-0x0000000000520000-0x0000000000526000-memory.dmp

      Filesize

      24KB

    • memory/2428-2-0x0000000000520000-0x0000000000526000-memory.dmp

      Filesize

      24KB

    • memory/2428-3-0x0000000000540000-0x0000000000546000-memory.dmp

      Filesize

      24KB

    • memory/2428-16-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/3264-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/3264-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/3264-48-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB