Analysis

  • max time kernel
    143s
  • 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
    19-03-2024 04:37

General

  • Target

    2024-03-19_659f33b8cda7a4966cda7a335f030220_cryptolocker.exe

  • Size

    46KB

  • MD5

    659f33b8cda7a4966cda7a335f030220

  • SHA1

    9ae4b81e2b3960031c62f69f4cc516e0be38c730

  • SHA256

    5890e76724e375f78715b3bfc531e15132da1db0102e3ea414851481052632c6

  • SHA512

    b9a4f4dd95a89e95d03bee07e46682a4d3e4bcc739f1a4f1e733ea975004c4d1edfc8e83e7ef9e58167ca7efe58d9a584b75862f94625e214937034e5b2c8192

  • SSDEEP

    384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/BdsQTN:XS5nQJ24LR1bytOOtEvwDpjNbP/bsSN

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\2024-03-19_659f33b8cda7a4966cda7a335f030220_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-19_659f33b8cda7a4966cda7a335f030220_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4580
    • 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:4368
  • 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=4072 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4804

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      46KB

      MD5

      b5912ca9b13a3e3084966547da3501ab

      SHA1

      3f9afa98aa6fbfdaff6447d95ccf92ec9a0f0f08

      SHA256

      d3f4b67e57bbf419492d698b3bb41716e43bb53dfd93d7cc1669927a15b92c3e

      SHA512

      5c1369ca093a8e79fc18c431dbee4a05d5c52d22b0ffa6a7d2e04f5dfdf74cbf0837b8dd961dcef784716cd696c86ba1fceb08b7300d4ba37851e764b4ca7432

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/4368-18-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/4368-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

      Filesize

      24KB

    • memory/4368-23-0x00000000006B0000-0x00000000006B6000-memory.dmp

      Filesize

      24KB

    • memory/4368-50-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/4580-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/4580-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

      Filesize

      24KB

    • memory/4580-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

      Filesize

      24KB

    • memory/4580-3-0x0000000000610000-0x0000000000616000-memory.dmp

      Filesize

      24KB

    • memory/4580-10-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB