Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2024, 23:44

General

  • Target

    2024-06-02_07d9d9c4f1c3c9709cacee23b3ebff5c_cryptolocker.exe

  • Size

    24KB

  • MD5

    07d9d9c4f1c3c9709cacee23b3ebff5c

  • SHA1

    ee0e33f0d755f6499b7446f9842f640633cea494

  • SHA256

    e46cdf1a048d94a7086ffc4b7013855fb6f57fe124f66ed952b98a1f5df35a72

  • SHA512

    cb2d79dbfd96204c54ee87417b9593442cee197d6f165dc2a9d48944f68d654bdd6c0d2093f23ff1f3a96036277b0c7d0d4d04ba21ad6c4d1af50723623402e5

  • SSDEEP

    384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HMJ/O6:bVCPwFRo6CpwXFXSqQXfjAsJ/O6

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 4 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-02_07d9d9c4f1c3c9709cacee23b3ebff5c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_07d9d9c4f1c3c9709cacee23b3ebff5c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4220
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:4264

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          24KB

          MD5

          17417459107a26876fb61380bf6958b2

          SHA1

          70e3b51fd6a91918d72eed4a05b6814319ad8c95

          SHA256

          431685f3e575b234b12f1f9f8a7d6d2a6c2823f8c68880a93308518efc5fd0fc

          SHA512

          f290ade12a4f332ea28dafe68e57804bf1bb5469a6901657266ff9487a0efc4fda746de74cc973a0df1bd686dde3301777587d8e269c6fdadb53e2cee0c1380a

        • memory/4220-0-0x0000000008000000-0x000000000800E000-memory.dmp

          Filesize

          56KB

        • memory/4220-1-0x00000000020A0000-0x00000000020A6000-memory.dmp

          Filesize

          24KB

        • memory/4220-2-0x0000000003010000-0x0000000003016000-memory.dmp

          Filesize

          24KB

        • memory/4220-9-0x00000000020A0000-0x00000000020A6000-memory.dmp

          Filesize

          24KB

        • memory/4220-18-0x0000000008000000-0x000000000800E000-memory.dmp

          Filesize

          56KB

        • memory/4264-20-0x0000000003150000-0x0000000003156000-memory.dmp

          Filesize

          24KB

        • memory/4264-26-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

          Filesize

          24KB

        • memory/4264-27-0x0000000008000000-0x000000000800E000-memory.dmp

          Filesize

          56KB