Analysis

  • max time kernel
    151s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2024, 02:13

General

  • Target

    2024-02-14_bf4f294946493700b5f7c88e29738556_cryptolocker.exe

  • Size

    126KB

  • MD5

    bf4f294946493700b5f7c88e29738556

  • SHA1

    f993a71d77a0a4c49734bf6f0484bb0079cfb090

  • SHA256

    33276620cbd7fe3e7c4912c7eda8cf2d5eedc4012ddfc6113434b40f4a937e73

  • SHA512

    07f0822598920606a9ba376052b414204e53a16babda22e0b22e9b874dff6f8545dca053e644bc0f6fd287877de3564a43b9edf8f18565c66973f36c699a56d9

  • SSDEEP

    1536:gUj+AIMOtEvwDpjNbwQEIPlemUhYwkkxGBpCp:vCA9OtEvwDpjE

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\2024-02-14_bf4f294946493700b5f7c88e29738556_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_bf4f294946493700b5f7c88e29738556_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4976
    • 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:680

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          126KB

          MD5

          5fb1746e2955215a2416180543778155

          SHA1

          85a6901cdec5064e79fb289a0f78d952d69d59e5

          SHA256

          8e8aa1f6cefb4e7e10adaf85063d5ce64a9a42d2caf5fc42b8e250c92ee72ce9

          SHA512

          f4dea1fe3ae3617bcd44767ad368adf9a1fb1ab90838cb5d0f73490de0e02450f26e1f0a03dbb610b1706af35717140a335855e4203240bfa7c8aa7fb07286e0

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/680-17-0x0000000002080000-0x0000000002086000-memory.dmp

          Filesize

          24KB

        • memory/680-18-0x0000000000680000-0x0000000000686000-memory.dmp

          Filesize

          24KB

        • memory/4976-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

          Filesize

          24KB

        • memory/4976-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

          Filesize

          24KB

        • memory/4976-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

          Filesize

          24KB