Analysis

  • max time kernel
    143s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-05-2024 05:40

General

  • Target

    2024-05-02_670c23abb528d1f1888097185fd3a884_cryptolocker.exe

  • Size

    49KB

  • MD5

    670c23abb528d1f1888097185fd3a884

  • SHA1

    ef0a98e60fd876d88fbca8f5a419a4fe7e7393be

  • SHA256

    90a82474497f4d8e09182d868fce30bb56fe9a7c44727a8ad863ebe030236362

  • SHA512

    b0c2c06a8ae3e8294a37cd4e7f1dbc49c0eaa0332f46f597e8a1b95d9b1a79ce5ba258f69ad531cb0eb7f9f2afcf619b8b98cf00efd5dff18cca04fa13b4be19

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprqQ15x8N:ZVxkGOtEvwDpjcJ

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\2024-05-02_670c23abb528d1f1888097185fd3a884_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-02_670c23abb528d1f1888097185fd3a884_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1620
    • 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:1420
  • 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=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4472

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      50KB

      MD5

      2d4bd44695432d1223813f343e353b59

      SHA1

      6491bd20af00784912a0fabec64829b3f53e617d

      SHA256

      5f6164aa8b8b8e979ba48c2032637f168afd4db9ddf9d8bb20fada096b0dff82

      SHA512

      32b220905a687ea988da9b79da7636339a9fad38caa704bc8db104cd20522210780a0d7b2b9e266a8df49460d7d1c1b3c7c7866f4d4a7ad5996b9b14351c1534

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/1420-17-0x0000000000490000-0x0000000000493000-memory.dmp

      Filesize

      12KB

    • memory/1420-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/1420-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/1620-0-0x0000000000450000-0x0000000000453000-memory.dmp

      Filesize

      12KB

    • memory/1620-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

      Filesize

      24KB

    • memory/1620-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

      Filesize

      24KB

    • memory/1620-3-0x0000000000610000-0x0000000000616000-memory.dmp

      Filesize

      24KB

    • memory/1620-26-0x0000000000450000-0x0000000000453000-memory.dmp

      Filesize

      12KB