Analysis

  • max time kernel
    151s
  • max time network
    152s
  • 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 19:54

General

  • Target

    2024-05-14_56b1920106a97f88c62af6a254525a5a_cryptolocker.exe

  • Size

    39KB

  • MD5

    56b1920106a97f88c62af6a254525a5a

  • SHA1

    4001dd6a5e283e9eeab964727f7c7d801e8ea726

  • SHA256

    14253d48cbf317374465e31f37e4876ec58c1031992e4d0d9cfc965ca76927f1

  • SHA512

    ca67fee118abf82e216b37914e69c3b60d9aafd2c8a1684c9407496dd9687228367dd6a150c416cfac43a46bd3778fc780fcbf47dac56dbe6d099352f4f746ae

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY99:qDdFJy3QMOtEvwDpjjWMl7Tu

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\2024-05-14_56b1920106a97f88c62af6a254525a5a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-14_56b1920106a97f88c62af6a254525a5a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1424
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2464
  • 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=4832 --field-trial-handle=3060,i,1774866140584649235,8085848018931772189,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2516

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      39KB

      MD5

      cfd5cc8a48bd0baae3e9bc56095e4791

      SHA1

      b057472f48377504588cf6bef24245ed888a4285

      SHA256

      3e6b7decf55a6d8f58a8fa523b0e199ab35f120774954dd3bccf708a1b136ff1

      SHA512

      6fe4cbd7edf733e6675c4f6096298d5b65a662052dd3de326112c7091cf9901d76a4acd59a000b9a0af25275c21451c622c9d4cbef197d9da7a8e52bc21142a1

    • memory/1424-0-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/1424-1-0x0000000002050000-0x0000000002056000-memory.dmp

      Filesize

      24KB

    • memory/1424-2-0x0000000002050000-0x0000000002056000-memory.dmp

      Filesize

      24KB

    • memory/1424-3-0x0000000002070000-0x0000000002076000-memory.dmp

      Filesize

      24KB

    • memory/1424-10-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/2464-19-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/2464-21-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/2464-29-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB