Analysis

  • max time kernel
    109s
  • max time network
    198s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231020-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-10-2023 21:32

General

  • Target

    NEAS.cdfca4e1e03fd2686e4d6127852b67a0.dll

  • Size

    511KB

  • MD5

    cdfca4e1e03fd2686e4d6127852b67a0

  • SHA1

    1bd522300c449c46657f774665887b68597093b0

  • SHA256

    2096455bbb8483c4e490be81e5ed38f1f1b4fb32b6dda55a80a3ff01797acc27

  • SHA512

    c563011c44c3ec1ebd3ff12002688472090771656c15255dc2962f9347db55a482406713e96ce0018d3692a325f9832f4d9bb04657406620564b8a7425cba9d7

  • SSDEEP

    6144:o6C5AXbMn7UI1FoV2gwTBlrIckPJYYYYYYYYYYYYa:o6RI1Fo/wT3cJYYYYYYYYYYYYa

Score
10/10

Malware Config

Signatures

  • Yunsip

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\NEAS.cdfca4e1e03fd2686e4d6127852b67a0.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3492
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\NEAS.cdfca4e1e03fd2686e4d6127852b67a0.dll,#1
      2⤵
        PID:1724

    Network

    • flag-us
      DNS
      157.123.68.40.in-addr.arpa
      Remote address:
      8.8.8.8:53
      Request
      157.123.68.40.in-addr.arpa
      IN PTR
      Response
    • flag-us
      DNS
      8.3.197.209.in-addr.arpa
      Remote address:
      8.8.8.8:53
      Request
      8.3.197.209.in-addr.arpa
      IN PTR
      Response
      8.3.197.209.in-addr.arpa
      IN PTR
      vip0x008map2sslhwcdnnet
    • flag-us
      DNS
      198.187.3.20.in-addr.arpa
      Remote address:
      8.8.8.8:53
      Request
      198.187.3.20.in-addr.arpa
      IN PTR
      Response
    • flag-us
      DNS
      14.160.190.20.in-addr.arpa
      Remote address:
      8.8.8.8:53
      Request
      14.160.190.20.in-addr.arpa
      IN PTR
      Response
    • flag-us
      DNS
      88.156.103.20.in-addr.arpa
      Remote address:
      8.8.8.8:53
      Request
      88.156.103.20.in-addr.arpa
      IN PTR
      Response
    • flag-us
      DNS
      21.236.111.52.in-addr.arpa
      Remote address:
      8.8.8.8:53
      Request
      21.236.111.52.in-addr.arpa
      IN PTR
      Response
    • flag-us
      DNS
      95.221.229.192.in-addr.arpa
      Remote address:
      8.8.8.8:53
      Request
      95.221.229.192.in-addr.arpa
      IN PTR
      Response
    No results found
    • 8.8.8.8:53
      157.123.68.40.in-addr.arpa
      dns
      72 B
      146 B
      1
      1

      DNS Request

      157.123.68.40.in-addr.arpa

    • 8.8.8.8:53
      8.3.197.209.in-addr.arpa
      dns
      70 B
      111 B
      1
      1

      DNS Request

      8.3.197.209.in-addr.arpa

    • 8.8.8.8:53
      198.187.3.20.in-addr.arpa
      dns
      71 B
      157 B
      1
      1

      DNS Request

      198.187.3.20.in-addr.arpa

    • 8.8.8.8:53
      14.160.190.20.in-addr.arpa
      dns
      72 B
      158 B
      1
      1

      DNS Request

      14.160.190.20.in-addr.arpa

    • 8.8.8.8:53
      88.156.103.20.in-addr.arpa
      dns
      72 B
      158 B
      1
      1

      DNS Request

      88.156.103.20.in-addr.arpa

    • 8.8.8.8:53
      21.236.111.52.in-addr.arpa
      dns
      72 B
      158 B
      1
      1

      DNS Request

      21.236.111.52.in-addr.arpa

    • 8.8.8.8:53
      95.221.229.192.in-addr.arpa
      dns
      73 B
      144 B
      1
      1

      DNS Request

      95.221.229.192.in-addr.arpa

    MITRE ATT&CK Matrix

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