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Analysis

  • max time kernel
    152s
  • 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
    18/03/2024, 15:46

General

  • Target

    2024-03-18_9ee06bac6c5190baf8c7b656a3e199f9_cryptolocker.exe

  • Size

    128KB

  • MD5

    9ee06bac6c5190baf8c7b656a3e199f9

  • SHA1

    b8dc8a5668abbf2b63638ec8c033ac2e50a375c2

  • SHA256

    60369a7db3b1567d02e7f2f1e8a05a076133f684e6e034ce2b9556a3904c678c

  • SHA512

    ff34eabb02f2274a7fb294a76146577317cfe095a422ce0ddb4f3a7fb11f93d22569bfd8e9a88dfa05e7fa0ebb1ecfa3a52c22915f0db0c63438ef17d40c0421

  • SSDEEP

    1536:gUj+AIMOtEvwDpjNbwQEIPlemUhYwkkxGBp2QG:vCA9OtEvwDpjVG

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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-18_9ee06bac6c5190baf8c7b656a3e199f9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-18_9ee06bac6c5190baf8c7b656a3e199f9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2076
    • 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:4848
  • 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=3780 --field-trial-handle=2900,i,14549994492153927475,12895178890800740987,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3452

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      128KB

      MD5

      4bb1445632fac4a58ffae28b4b6b9d42

      SHA1

      92a7d43aae215446b6c48a19667de0f124ae0e1d

      SHA256

      174b98619c341234925d6847e16480f22c115645a6fedb8a53c9c036942f858f

      SHA512

      d780d4314fc034ab992befac74071c02911ee02204925673eac2557521e7d6f751a34a4749f402e391e534208cfd5cdb047b40f3eb610136ce10a1f18f33ef6e

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/2076-0-0x0000000000620000-0x0000000000626000-memory.dmp

      Filesize

      24KB

    • memory/2076-1-0x0000000000620000-0x0000000000626000-memory.dmp

      Filesize

      24KB

    • memory/2076-2-0x0000000000650000-0x0000000000656000-memory.dmp

      Filesize

      24KB

    • memory/4848-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

      Filesize

      24KB

    • memory/4848-19-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB