Resubmissions

19/11/2024, 16:46 UTC

241119-t9xz6sygrj 10

19/11/2024, 03:35 UTC

241119-d5v21svmaq 10

Analysis

  • max time kernel
    94s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/11/2024, 03:35 UTC

General

  • Target

    d3abf557101fe8ce97ea068290f87d24743cbe0bcbc73857e0e3f72edc225c0bN.dll

  • Size

    730KB

  • MD5

    219987362975616dc07d31e5fe0ff420

  • SHA1

    01f77bfc5efebde4e305f47aba4411da661ca7bf

  • SHA256

    d3abf557101fe8ce97ea068290f87d24743cbe0bcbc73857e0e3f72edc225c0b

  • SHA512

    91f215e0629176d1d45c44503c68f535d0e9e409c01193bc74b8c1238a9e9e3a8eb6b021bd542d2275321855e16baaa975c3385c86a563a8bdaf6199f20e9a6f

  • SSDEEP

    6144:o6C5AXbMn7UI1FoV2gwTBlrIckPJYYYYYYYYYYYYi:o6RI1Fo/wT3cJYYYYYYYYYYYYi

Malware Config

Signatures

  • Yunsip

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

  • Yunsip family
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\d3abf557101fe8ce97ea068290f87d24743cbe0bcbc73857e0e3f72edc225c0bN.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4928
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\d3abf557101fe8ce97ea068290f87d24743cbe0bcbc73857e0e3f72edc225c0bN.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1084

Network

  • flag-us
    DNS
    8.8.8.8.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    8.8.8.8.in-addr.arpa
    IN PTR
    Response
    8.8.8.8.in-addr.arpa
    IN PTR
    dnsgoogle
  • flag-us
    DNS
    209.205.72.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    209.205.72.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    83.210.23.2.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    83.210.23.2.in-addr.arpa
    IN PTR
    Response
    83.210.23.2.in-addr.arpa
    IN PTR
    a2-23-210-83deploystaticakamaitechnologiescom
  • 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
    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
  • flag-us
    DNS
    104.219.191.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    104.219.191.52.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    197.87.175.4.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    197.87.175.4.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    171.39.242.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    171.39.242.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    172.214.232.199.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    172.214.232.199.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    182.129.81.91.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    182.129.81.91.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    48.229.111.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    48.229.111.52.in-addr.arpa
    IN PTR
    Response
No results found
  • 8.8.8.8:53
    8.8.8.8.in-addr.arpa
    dns
    66 B
    90 B
    1
    1

    DNS Request

    8.8.8.8.in-addr.arpa

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

    DNS Request

    209.205.72.20.in-addr.arpa

  • 8.8.8.8:53
    83.210.23.2.in-addr.arpa
    dns
    70 B
    133 B
    1
    1

    DNS Request

    83.210.23.2.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
    95.221.229.192.in-addr.arpa
    dns
    73 B
    144 B
    1
    1

    DNS Request

    95.221.229.192.in-addr.arpa

  • 8.8.8.8:53
    104.219.191.52.in-addr.arpa
    dns
    73 B
    147 B
    1
    1

    DNS Request

    104.219.191.52.in-addr.arpa

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

    DNS Request

    197.87.175.4.in-addr.arpa

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

    DNS Request

    171.39.242.20.in-addr.arpa

  • 8.8.8.8:53
    172.214.232.199.in-addr.arpa
    dns
    74 B
    128 B
    1
    1

    DNS Request

    172.214.232.199.in-addr.arpa

  • 8.8.8.8:53
    182.129.81.91.in-addr.arpa
    dns
    72 B
    147 B
    1
    1

    DNS Request

    182.129.81.91.in-addr.arpa

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

    DNS Request

    48.229.111.52.in-addr.arpa

MITRE ATT&CK Enterprise v15

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