Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/05/2024, 12:45

General

  • Target

    2024-05-29_e722595fad6e63ce4a0b0bfd86821121_cryptolocker.exe

  • Size

    80KB

  • MD5

    e722595fad6e63ce4a0b0bfd86821121

  • SHA1

    51a9b169489fc5a06d943db639a6264ba05e2c03

  • SHA256

    6c33b8ff1059c1e319c359c7e2986117f7981a7b24497438be7c81fd7d2dda68

  • SHA512

    ff0b662f33845fc984a227fa16b6b6f503bbf97524e9dd8121c77c8b2c3a4b7f1d21652c316a63e2508e21729b2506db81a7b235c0f5ab24c0258092f8c8ec07

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KEWT+UB:ZVxkGOtEvwDpjcaxW

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-05-29_e722595fad6e63ce4a0b0bfd86821121_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-29_e722595fad6e63ce4a0b0bfd86821121_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4872
    • 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:1540

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          80KB

          MD5

          f2e60f6973b0d10383c99f23c6590ab6

          SHA1

          02b616b563dd6346ee4378b34f288e3dd1278df6

          SHA256

          9c1c1c9f3a84ed1e99088ed0035431120ad6fac4b58a109bf3e4a05f9555fe4a

          SHA512

          e77dc44a61d3555c4cef0e3dca1e8892ce64aec0d5d1841755ad5e3a8ccf9539f4808c798196ff9399f2e533c822e02a4a2a1daed63d83508dc7025681ca469c

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1540-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/1540-20-0x0000000000680000-0x0000000000686000-memory.dmp

          Filesize

          24KB

        • memory/1540-19-0x0000000000520000-0x0000000000526000-memory.dmp

          Filesize

          24KB

        • memory/1540-48-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/4872-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/4872-0-0x0000000000490000-0x00000000004A0000-memory.dmp

          Filesize

          64KB

        • memory/4872-2-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/4872-9-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB