Analysis

  • max time kernel
    95s
  • 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
    02/01/2025, 07:49

General

  • Target
    e948a377fc14f85a181fbe1beb93027cc3acbe32ef1cf0a4abe2c57fc9963cb3N.dll
  • Size 1.1MB
  • Sample250102-jnnjhatrdq
  • SHA256 e948a377fc14f85a181fbe1beb93027cc3acbe32ef1cf0a4abe2c57fc9963cb3
  • MD5 SHA1 SHA512 SSDEEP

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\e948a377fc14f85a181fbe1beb93027cc3acbe32ef1cf0a4abe2c57fc9963cb3N.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2524
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\e948a377fc14f85a181fbe1beb93027cc3acbe32ef1cf0a4abe2c57fc9963cb3N.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:856

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads