Analysis

  • max time kernel
    130s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/06/2024, 11:37

General

  • Target

    2024-06-06_56f03f57f24f3762b874fc1bb2ddb69e_cryptolocker.exe

  • Size

    81KB

  • MD5

    56f03f57f24f3762b874fc1bb2ddb69e

  • SHA1

    5a605ee339b5fdea5490664afd9d23f0ec87e992

  • SHA256

    18679d610202d0b87a1fc95d4aad35e400ad9c023b28e797c15509e38a4fc279

  • SHA512

    9bc6d3a5adae823fb3408326c130a0b155ea782cea2be25519516bf0db30d3dfc58f2a38e75e3605efe8ca5f8b5607f2982d714ea00674290b9f953d04470d58

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7QN:zCsanOtEvwDpjZ

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 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\2024-06-06_56f03f57f24f3762b874fc1bb2ddb69e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-06_56f03f57f24f3762b874fc1bb2ddb69e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4536
    • 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:4240

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          81KB

          MD5

          3cfe8a6896e7a35e05908c30c3dbd54d

          SHA1

          814b02f818e1a8c30d92420391461fecb57aa4e9

          SHA256

          fc32253bd7be65de41658a0741bff96cdba821be29b7762f37318155bcb501d8

          SHA512

          020201cd2224fbb19d33cef5272fbd96296881bae5b51b85445b8c8d52c314f6c8f5613bd8425b26774688db25499c4ce0755a2c337723679a0c0e73d06de683

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/4240-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4240-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

          Filesize

          24KB

        • memory/4240-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/4240-49-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4536-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4536-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4536-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/4536-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4536-18-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB