Analysis

  • max time kernel
    131s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/05/2024, 13:30

General

  • Target

    2024-05-13_67208460bd60830149773da42d49a011_cryptolocker.exe

  • Size

    48KB

  • MD5

    67208460bd60830149773da42d49a011

  • SHA1

    8b22c5a724d270eb758bb2f49ef39474c5c7eb8e

  • SHA256

    e92740ac7e18996662b56ad853a449340244306722a546408034f2f500077b7a

  • SHA512

    45e9151dcd76c23fe09dc3eb86922751f6f7360a2e794ac23867b9878ae3d96f1653a9ea78a84cddb275a5e87e884916954dc1ac438e18f22f5302dcce229726

  • SSDEEP

    384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/BdmRSr:XS5nQJ24LR1bytOOtEvwDpjNbP/bm8

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-13_67208460bd60830149773da42d49a011_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-13_67208460bd60830149773da42d49a011_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1720
    • 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:2716
  • 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 --field-trial-handle=1428,i,6576818814118437872,11004518367271063231,262144 --variations-seed-version --mojo-platform-channel-handle=4088 /prefetch:8
    1⤵
      PID:3720

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      48KB

      MD5

      9fdd8cb52384449c57d82e5f0f6130d0

      SHA1

      2d2fffeba2fd4eab730b79edd54a5f31447e466f

      SHA256

      0a915743461547e2a1efde815c67e92e0de6332734f60b6550d6bae437d66d3c

      SHA512

      d4d24695ada6c561fabed5fe008e7d611b4516fc6c59edd9d3a0e54ebbb568396266e2e162fd0ed4f928a8d4ef92bc16733e26a36eabb52f63924b326576e13c

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/1720-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/1720-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

      Filesize

      24KB

    • memory/1720-3-0x00000000006E0000-0x00000000006E6000-memory.dmp

      Filesize

      24KB

    • memory/1720-9-0x00000000004E0000-0x00000000004E6000-memory.dmp

      Filesize

      24KB

    • memory/1720-16-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/2716-18-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/2716-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/2716-21-0x0000000002100000-0x0000000002106000-memory.dmp

      Filesize

      24KB

    • memory/2716-50-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB