Analysis

  • max time kernel
    37s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    20-10-2022 09:35

General

  • Target

    c446e5da1c2a0938697469489ff2e86118b766e5d54a8f3e3e1c79f83b327238.dll

  • Size

    577KB

  • MD5

    4a6e3de862bca88df72de06742a2d490

  • SHA1

    83851359894707bb45f6ac1a5ab2d1495fd68e80

  • SHA256

    c446e5da1c2a0938697469489ff2e86118b766e5d54a8f3e3e1c79f83b327238

  • SHA512

    b1d4dc80bff3e2dfbf5ae9f597a141a32fe7c6ad773661b89dd937d84afdb6ff917f332aa4dded15670130f8ae8000b5dac9a6ed1b31db1aa6732df903bcabb4

  • SSDEEP

    3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0U:jDgtfRQUHPw06MoV2nwTBlhm88

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\c446e5da1c2a0938697469489ff2e86118b766e5d54a8f3e3e1c79f83b327238.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:904
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\c446e5da1c2a0938697469489ff2e86118b766e5d54a8f3e3e1c79f83b327238.dll,#1
      2⤵
        PID:1736

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1736-54-0x0000000000000000-mapping.dmp

    • memory/1736-55-0x0000000075281000-0x0000000075283000-memory.dmp

      Filesize

      8KB