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Analysis

  • max time kernel
    140s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/05/2024, 19:32

General

  • Target

    2024-05-15_c51f03f088e3ec3291e15821992e0adb_cryptolocker.exe

  • Size

    48KB

  • MD5

    c51f03f088e3ec3291e15821992e0adb

  • SHA1

    6422b19c65dca9e215551fdf56c5aaad520559b1

  • SHA256

    76217a6802b37a33c03e137dd359ee1d1bb49f7d7b5878a7e363c8427d42d62d

  • SHA512

    e07282c1dc6c0f00312afd70de183379c6d99f41ec1bb6aa03e0e2bb421b0067c51ec56e64b7005f73d336823bee35de9f983a0c434fdae9f0a898bf1423e467

  • SSDEEP

    384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/BdmRSv:XS5nQJ24LR1bytOOtEvwDpjNbP/bmY

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-05-15_c51f03f088e3ec3291e15821992e0adb_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-15_c51f03f088e3ec3291e15821992e0adb_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4836
    • 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:948
  • 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=3828 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2252

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      48KB

      MD5

      4456f08a901f4a71513482577c8fbce5

      SHA1

      7ae2d67374f0a3fd6e55bcc5088cedd1a1ab94c3

      SHA256

      12d863ec7c5960e5314e47e493162d2876b334074c9496299d5c15bd4c30db0c

      SHA512

      a9cde9edcad6ddee1c286cd653debb75ae5cc247418b7f5a885556e8d07441ed9e1809f85f9094850c6e49def487a91b4745d081c419d68beb7df6fb70c4f503

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/948-23-0x00000000006D0000-0x00000000006D6000-memory.dmp

      Filesize

      24KB

    • memory/948-29-0x00000000006B0000-0x00000000006B6000-memory.dmp

      Filesize

      24KB

    • memory/948-31-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/4836-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/4836-1-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/4836-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

      Filesize

      24KB

    • memory/4836-3-0x00000000005A0000-0x00000000005A6000-memory.dmp

      Filesize

      24KB

    • memory/4836-4-0x00000000005C0000-0x00000000005C6000-memory.dmp

      Filesize

      24KB

    • memory/4836-11-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB