Analysis

  • max time kernel
    11s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    21-10-2022 19:32

General

  • Target

    ac54420704a8e6381550cd3394cd11151c488d5548ce9d91b45e073a649c5ab3.dll

  • Size

    222KB

  • MD5

    1f38d3e3f6b3d9f3a1dec29283a0bb21

  • SHA1

    10cb908d20609240a4521ee58c2475de03145329

  • SHA256

    ac54420704a8e6381550cd3394cd11151c488d5548ce9d91b45e073a649c5ab3

  • SHA512

    7daded363f17701903f890baaf3f52e03aaedcdcbf43b2a4d221d47efc39b42f198d8af4ad7149c86beac3839e713155529663e1886deddbfbba8051a151da79

  • 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\ac54420704a8e6381550cd3394cd11151c488d5548ce9d91b45e073a649c5ab3.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1908
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\ac54420704a8e6381550cd3394cd11151c488d5548ce9d91b45e073a649c5ab3.dll,#1
      2⤵
        PID:1492

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1492-54-0x0000000000000000-mapping.dmp

    • memory/1492-55-0x0000000075B11000-0x0000000075B13000-memory.dmp

      Filesize

      8KB