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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
    23/04/2024, 02:42

General

  • Target

    2024-04-23_d06602bdd08176ca8443d0fc72371b47_cryptolocker.exe

  • Size

    102KB

  • MD5

    d06602bdd08176ca8443d0fc72371b47

  • SHA1

    0fbedb8c1e5fd31b3317037a4658c6bd5df4c15b

  • SHA256

    b56f22dae2130ad94df87c76e461f456106aa0faa462e8edf2c4188905001550

  • SHA512

    d246b7b64842b57d3e17b6d47b1af10281062f5a62dfa87de0ad257002bc37ac45df66c362f3b55758dacbd7a2065317a938d98e9f509ed2b077480f9e7893bc

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviPeBcM:AnBdOOtEvwDpj6zG

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-23_d06602bdd08176ca8443d0fc72371b47_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-23_d06602bdd08176ca8443d0fc72371b47_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5080
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1108
  • 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=1028 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4776

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      102KB

      MD5

      02139e009d7949f410712a6fb14bea4f

      SHA1

      b7706e6fbf72a323788f785fcfef254f2e1e1ae1

      SHA256

      765911cdca571ff4918ed2d9a2c12ed7f81ef131e8fc16efe8824a719020faa8

      SHA512

      499aefe974f0b5b3478eeace0c1713058d38d803780c0e0aacf07b8704dd1be2edd29056f255faea71f6521193b5522499a937dc66f75002db8993ffb38cb96a

    • memory/1108-19-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/1108-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

      Filesize

      24KB

    • memory/1108-22-0x00000000004E0000-0x00000000004E6000-memory.dmp

      Filesize

      24KB

    • memory/1108-28-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/5080-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/5080-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/5080-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/5080-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/5080-16-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB