Analysis

  • max time kernel
    94s
  • max time network
    101s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/05/2024, 21:39

General

  • Target

    PetyaDecryptor/libcrypto-1_1.dll

  • Size

    2.0MB

  • MD5

    6f52970d7a41141d3c93b3937bd6b84c

  • SHA1

    bd94dcb31ff9e64b187af8f2361ec688bf5bb91d

  • SHA256

    81e7e8206cf46c7aa3abb69a2a2dac8371bf5eea137df1901a84a5b7388fe768

  • SHA512

    71b8da11ddb181a1864ca83e4a2d9a5e13948c372d7ea2d4fb5bb5e0acf957c039bd5456ad16c08dd2e18ef252ee492b01c84ecf748afdb616d5496faeca4437

  • SSDEEP

    49152:T6kvSjcvQ/qpyr0kou74WAdvHoU6U1CPwDv3uFV0cSWPWb:2kvCcvQ/qpyr0koW6oUh1CPwDv3uFV0

Score
3/10

Malware Config

Signatures

  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\PetyaDecryptor\libcrypto-1_1.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1372
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\PetyaDecryptor\libcrypto-1_1.dll,#1
      2⤵
        PID:1240
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1240 -s 636
          3⤵
          • Program crash
          PID:3616
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1240 -ip 1240
      1⤵
        PID:3952

      Network

            MITRE ATT&CK Matrix

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            Downloads