Analysis

  • max time kernel
    24s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    20-11-2022 10:04

General

  • Target

    40a23b0fb20ebf7e31d104681ec2401e3ed259da942a66adc4961d5111efb59f.dll

  • Size

    600KB

  • MD5

    13fac4bfb169a08feaa9c23112fe9f70

  • SHA1

    173cc83eb166403995b1c0b13978f46aadc141bc

  • SHA256

    40a23b0fb20ebf7e31d104681ec2401e3ed259da942a66adc4961d5111efb59f

  • SHA512

    868a3201194f4c53e5ee3586cab72b277284e7787fb2701107242ced12431c08c265f2e663c95b0b71c178b3aa9f23596fdc517a8c1fc25f3c62418c3adfd627

  • SSDEEP

    3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0X:jDgtfRQUHPw06MoV2nwTBlhm8f

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\40a23b0fb20ebf7e31d104681ec2401e3ed259da942a66adc4961d5111efb59f.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1260
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\40a23b0fb20ebf7e31d104681ec2401e3ed259da942a66adc4961d5111efb59f.dll,#1
      2⤵
        PID:1792

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads

    • memory/1792-55-0x0000000076381000-0x0000000076383000-memory.dmp

      Filesize

      8KB