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Analysis

  • max time kernel
    113s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/05/2024, 19:37

General

  • Target

    2024-05-14_888ca758eb314c2601ec500b017628d8_cryptolocker.exe

  • Size

    79KB

  • MD5

    888ca758eb314c2601ec500b017628d8

  • SHA1

    656c4ff677f2aafb6dc28d3daf906023b275dbd8

  • SHA256

    bb282630ec4a3b8bc4c897452213f975aaaf1a34adb26bbb41eb9fdd8d8ad456

  • SHA512

    bee3c86667b1ed4914140a7f1e5597f56d107a6b49a816b66e20b2f0070ef4f8c2629e3a3d68dec5163763cf4a13c5f65f474ba6acdf17721c7ed0014334cc27

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KEWT+6:ZVxkGOtEvwDpjcaxk

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\2024-05-14_888ca758eb314c2601ec500b017628d8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-14_888ca758eb314c2601ec500b017628d8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3968
    • 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:5000
  • 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=4020 --field-trial-handle=2244,i,11878111470816612087,2265290141962607370,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1964

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      79KB

      MD5

      4f3c0238ab0ebd5c538cca42009db121

      SHA1

      8f8a266ad5155e5102b33ede17dba0bfe52a3533

      SHA256

      955b5cfe16034036805ea9ebd9d55466061a3f10934fcacf6109ca2f61abaed2

      SHA512

      1217d487a53a5a60489f25a361eb43a34c03fac1de1306295c04c5aa129d84848c20e6a4da35e1167ab390baf6d9221ae43cfd53371fc560fccdeb7706510447

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/3968-0-0x0000000000490000-0x0000000000493000-memory.dmp

      Filesize

      12KB

    • memory/3968-1-0x0000000002310000-0x0000000002316000-memory.dmp

      Filesize

      24KB

    • memory/3968-2-0x0000000002310000-0x0000000002316000-memory.dmp

      Filesize

      24KB

    • memory/3968-3-0x0000000002230000-0x0000000002236000-memory.dmp

      Filesize

      24KB

    • memory/3968-10-0x0000000000490000-0x0000000000493000-memory.dmp

      Filesize

      12KB

    • memory/5000-19-0x0000000000460000-0x0000000000463000-memory.dmp

      Filesize

      12KB

    • memory/5000-20-0x00000000004E0000-0x00000000004E6000-memory.dmp

      Filesize

      24KB

    • memory/5000-21-0x0000000000510000-0x0000000000516000-memory.dmp

      Filesize

      24KB