Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/04/2024, 05:42

General

  • Target

    2024-04-30_e5dde988fc8cf5d1d6a4a8fb281184c7_cryptolocker.exe

  • Size

    72KB

  • MD5

    e5dde988fc8cf5d1d6a4a8fb281184c7

  • SHA1

    330863b128017e472248cda501353ad1460db5cd

  • SHA256

    5765af950e0941b2543814a32f04c1ed4ab88c7c04a8d27e6d34668e32b2a45e

  • SHA512

    fcbd6adef5abb8b9ed466ccf960fe2ad50f0806ca79ed6b1e5953613c645d4dd3ea8a41efb2b133a3ebb4687b3da42080b05fffd08932cfeeb94c729fabd3350

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9b:C4Q2c94OtEvwDpj4H8z2

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 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
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2024-04-30_e5dde988fc8cf5d1d6a4a8fb281184c7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-30_e5dde988fc8cf5d1d6a4a8fb281184c7_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1704
    • 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:2252

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          72KB

          MD5

          2d1fcdb15f72251c24eac8664fee453a

          SHA1

          037f2a50fbf085dc2a4f6735d42f8700aeb627bb

          SHA256

          7c135ead91ab928768ea62d224dbdead662c9e4dabcc9b674e0aad738158fdb4

          SHA512

          a6cc6f783b9e8555085ffb69aba67f5b685874d5718e9acf8f28f2fd031f6cf0c4d7dd3908ca333ea67f869799c04d453078769690ddb9243208a12a49608ee5

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1704-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/1704-1-0x0000000002050000-0x0000000002056000-memory.dmp

          Filesize

          24KB

        • memory/1704-3-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/1704-2-0x0000000002050000-0x0000000002056000-memory.dmp

          Filesize

          24KB

        • memory/1704-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2252-19-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2252-21-0x00000000005D0000-0x00000000005D6000-memory.dmp

          Filesize

          24KB

        • memory/2252-27-0x00000000005B0000-0x00000000005B6000-memory.dmp

          Filesize

          24KB

        • memory/2252-51-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB