Analysis

  • max time kernel
    40s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    30-11-2022 22:03

General

  • Target

    4c5cee68a57b0c43302541f6b89d496d667f6d79b321b8865468ed2222b99ebe.dll

  • Size

    216KB

  • MD5

    a70b70c5030d4c4cc42b5d1638a35680

  • SHA1

    d6a2772f97b45e659bd49d880ba15ab8a183ea37

  • SHA256

    4c5cee68a57b0c43302541f6b89d496d667f6d79b321b8865468ed2222b99ebe

  • SHA512

    9d13ec22888c716b2be3952be25b9fdf872855bb5aab38e9db3b116f5658155cb21943bd8212757897b1cd874982c062d58a8ced968cae85eadec6a0a3c70d10

  • SSDEEP

    3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0f:jDgtfRQUHPw06MoV2nwTBlhm83

Score
10/10

Malware Config

Signatures

  • Yunsip

    Remote backdoor which communicates with a C2 server to receive commands.

  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\4c5cee68a57b0c43302541f6b89d496d667f6d79b321b8865468ed2222b99ebe.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1788
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\4c5cee68a57b0c43302541f6b89d496d667f6d79b321b8865468ed2222b99ebe.dll,#1
      2⤵
        PID:1960

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads

    • memory/1960-55-0x0000000076321000-0x0000000076323000-memory.dmp

      Filesize

      8KB