Analysis

  • max time kernel
    141s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/05/2024, 02:44

General

  • Target

    2024-05-23_c12cd13d1ff1ee1206ea8338d080ca7d_cryptolocker.exe

  • Size

    55KB

  • MD5

    c12cd13d1ff1ee1206ea8338d080ca7d

  • SHA1

    962fc79c0a9ed986afa92fc8223f334f849add82

  • SHA256

    e31458a0ef4177227656378ab0bb835e409425692ef8048b907bb77124c3e0c0

  • SHA512

    507e3c0fddaaf8f60a09d0390e78bac65b4c08acba1d6c9ebd614e3cfc5500937cc08a2674947c889366e60a75df991ee3b81654a025dcd8c377fb6020a1f070

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdO5Ujb:ZVxkGOtEvwDpjcG

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-23_c12cd13d1ff1ee1206ea8338d080ca7d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-23_c12cd13d1ff1ee1206ea8338d080ca7d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5004
    • 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:1868
  • 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=3712 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1004

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      55KB

      MD5

      59a7da6f03cf79b5114a4078e326f4a1

      SHA1

      761b33e8936b1f44bd678f4d7e0e30f9e90a4f5d

      SHA256

      df3ce78dbeb8d0cd3af1245f71e87895c127ca7af51b93a67014c8c20c0fc618

      SHA512

      74c94448c330a003ddb723cba2417a8c947fd4721a9d405456944470a27b7705f298147523ac12ab5993ab81a02e7c05d8d00676e470fa4f799ef4b3c7e68ea1

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/1868-17-0x0000000000490000-0x0000000000493000-memory.dmp

      Filesize

      12KB

    • memory/1868-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/1868-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/5004-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

      Filesize

      12KB

    • memory/5004-1-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/5004-2-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/5004-3-0x0000000000820000-0x0000000000826000-memory.dmp

      Filesize

      24KB

    • memory/5004-18-0x00000000004E0000-0x00000000004E3000-memory.dmp

      Filesize

      12KB