Analysis

  • max time kernel
    142s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 20:48

General

  • Target

    2024-05-22_ccce8f05723a59365570dbeda22368ef_cryptolocker.exe

  • Size

    44KB

  • MD5

    ccce8f05723a59365570dbeda22368ef

  • SHA1

    0fadb13b91b165c37720a9f5af14279a7e97ce12

  • SHA256

    28a1558259b0c599a031a714f9b3749eccf65fb4f170bc56656b81271b4e0b50

  • SHA512

    42988e9ed525e73d9f48db5972741ef8b38aa3674981629bb350ef3271f4b78e194b38d27ae1a209f4171da750b3c1140eac38976d9e7be68a63745445126c28

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4REL+cc66Tcuv:vj+jsMQMOtEvwDpj5HW5scuv

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-22_ccce8f05723a59365570dbeda22368ef_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_ccce8f05723a59365570dbeda22368ef_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1188
    • 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:1404
  • 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=4140 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4248

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      44KB

      MD5

      00bb66590ba3c3013b6f26e6416258cf

      SHA1

      24a2c44e7c77ddd8e4211b9d805550c5662665e2

      SHA256

      ab1fb8150779e15400ac494625cbd624401cdeefdd0eba038b21c63e4824b55e

      SHA512

      474efa69c575870be5c9cee47b3f0def5b38b838b30ac71687e67a590b1d351fb38e4d7fa063616bc5edcab57968b20c978353c6f1f61499a33c801a00134c00

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/1188-0-0x0000000000870000-0x0000000000876000-memory.dmp

      Filesize

      24KB

    • memory/1188-1-0x0000000000870000-0x0000000000876000-memory.dmp

      Filesize

      24KB

    • memory/1188-2-0x0000000000890000-0x0000000000896000-memory.dmp

      Filesize

      24KB

    • memory/1404-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/1404-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB