Analysis

  • max time kernel
    95s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/05/2024, 10:03

General

  • Target

    2024-05-30_463a2d992ad2e93257ec14498f3960f2_cryptolocker.exe

  • Size

    62KB

  • MD5

    463a2d992ad2e93257ec14498f3960f2

  • SHA1

    5904132dfcccb9eefff83b39587fc3d0e39abe76

  • SHA256

    e9db789f44efb407b84387582990aef7703b380eb3ccc865f8384b52cc4bafe2

  • SHA512

    f9db61cec54dc53367bc39d5aa6df029e2c5ecc12dc831068ece50eff16e578b34b8eeab22f78e17482e45136da23b0d01ab0d57d7d3b5aeb8790128f034849d

  • SSDEEP

    1536:3P+HsMQMOtEvwDpjoHy7B3g9CWuAxWBqI:3WHsIOtEvwDpjoHYL

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 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\2024-05-30_463a2d992ad2e93257ec14498f3960f2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-30_463a2d992ad2e93257ec14498f3960f2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3268
    • 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:1772

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          62KB

          MD5

          005bd9fac1ef488c85c3c4f6242a097c

          SHA1

          14701e703b194fcb249265732b50fa5b35ae5b73

          SHA256

          ea11dac16e15b97ea4986d1fd9218f290db3d9837e9939a7f85014b9ecce8702

          SHA512

          c180e8fde037a3a69aeaf8bb1b2bdaaae9e23aee34fd35ad6fbe3105f797483f57bc46175cfc32a1c79ba39292a08593c3a3134e8ea541da6174eb9ac5b901a9

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1772-18-0x0000000000500000-0x000000000050B000-memory.dmp

          Filesize

          44KB

        • memory/1772-20-0x0000000000650000-0x0000000000656000-memory.dmp

          Filesize

          24KB

        • memory/1772-26-0x0000000000630000-0x0000000000636000-memory.dmp

          Filesize

          24KB

        • memory/1772-49-0x0000000000500000-0x000000000050B000-memory.dmp

          Filesize

          44KB

        • memory/3268-0-0x0000000000500000-0x000000000050B000-memory.dmp

          Filesize

          44KB

        • memory/3268-1-0x0000000000570000-0x0000000000576000-memory.dmp

          Filesize

          24KB

        • memory/3268-2-0x0000000000570000-0x0000000000576000-memory.dmp

          Filesize

          24KB

        • memory/3268-3-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/3268-17-0x0000000000500000-0x000000000050B000-memory.dmp

          Filesize

          44KB