Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/06/2024, 14:24

General

  • Target

    2024-06-12_02e06381f2a50842618c8bd818b90a6b_cryptolocker.exe

  • Size

    69KB

  • MD5

    02e06381f2a50842618c8bd818b90a6b

  • SHA1

    af7c7a72cd5bf0c377885aa1d20501da55441084

  • SHA256

    615aaf60a5267cacb017df78e52e0364d9d90d3a6f9af14b3893ed6490770bc8

  • SHA512

    1cfc34462634267323005b2052cdbda2468090ab87997c6fbcca3ff50e8dc2b3dc6d7892d1e527930512bf49307cd00860e0895ed5a33b3a1fc0de0587c3abdc

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEpE0P/xFIq:6j+1NMOtEvwDpjr8ox8UDEpN/jb

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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\2024-06-12_02e06381f2a50842618c8bd818b90a6b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-12_02e06381f2a50842618c8bd818b90a6b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2412
    • 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:2240
  • 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=4136 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2484

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

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

            Filesize

            69KB

            MD5

            4b18d346405df72be8b68be2dc7c969c

            SHA1

            95492462198dfc9d1acbac7460c11761515c3e2a

            SHA256

            418c0669785546bfd3f0c3768489c7d70924bd9de22cbf36743432aee899bccb

            SHA512

            129def1b477662a6b9ec7253884e85fd081d919b711495f41fb22b26aad0441cee11078ab267250033dbeb5269da4bd007971f3f9f1e32d74fda38c8dcdda060

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

            Filesize

            315B

            MD5

            a34ac19f4afae63adc5d2f7bc970c07f

            SHA1

            a82190fc530c265aa40a045c21770d967f4767b8

            SHA256

            d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

            SHA512

            42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

          • memory/2240-18-0x00000000006E0000-0x00000000006E6000-memory.dmp

            Filesize

            24KB

          • memory/2240-24-0x00000000006C0000-0x00000000006C6000-memory.dmp

            Filesize

            24KB

          • memory/2240-48-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB

          • memory/2412-0-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB

          • memory/2412-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

            Filesize

            24KB

          • memory/2412-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

            Filesize

            24KB

          • memory/2412-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

            Filesize

            24KB

          • memory/2412-25-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB