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Analysis

  • max time kernel
    149s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/05/2024, 01:00

General

  • Target

    2024-05-07_d2a5065525003fd2d808d724f53ffb18_cryptolocker.exe

  • Size

    48KB

  • MD5

    d2a5065525003fd2d808d724f53ffb18

  • SHA1

    beb1e618618885180c86fb813b403e8b447a6462

  • SHA256

    2cd09af5a2d73efc3b465e021f04b5a3e3272f01963727f8fc2e27e5f28fc585

  • SHA512

    655b29b708381d889aa96b113b979fb8658c0b329e0f89e358009f036145f7f7ca3c22d1ad8b2e8e171e68e914517c979443155e21708e63fa643e37ecf54b65

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr42A7n0FmB0nm:vj+jsMQMOtEvwDpj5HczerLO04B5

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-07_d2a5065525003fd2d808d724f53ffb18_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-07_d2a5065525003fd2d808d724f53ffb18_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3104
    • 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:2172
  • 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=1412 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3908

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      48KB

      MD5

      dd0bad6e76901ae6ae04288730fab2f6

      SHA1

      fd7e336d31c9e4506032b829dccbeec425158003

      SHA256

      09530d67a22edfab79e80a8bbc142f84a0c42a85b96a7c7dcea83ec8271784d0

      SHA512

      3f9c95b9835747851f2c18ed9a679afb98bc67fe09a521ea94ac5717ec7165a5add5bbfd5963ceadb7ac0cbcf716b12d00302b6209879447632db5c0af92dc95

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/2172-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

      Filesize

      24KB

    • memory/2172-23-0x0000000000560000-0x0000000000566000-memory.dmp

      Filesize

      24KB

    • memory/3104-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

      Filesize

      24KB

    • memory/3104-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

      Filesize

      24KB

    • memory/3104-2-0x0000000002230000-0x0000000002236000-memory.dmp

      Filesize

      24KB