Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    10-12-2024 05:53

General

  • Target

    13326ed69d36aaa385c5eba9fa6e5cc2.doc

  • Size

    195KB

  • MD5

    13326ed69d36aaa385c5eba9fa6e5cc2

  • SHA1

    66946fa69204b91787c7eabb91c1fd8452b1cc24

  • SHA256

    3106e90067456404a9f3e768ce3b60de6ae91fa2be664255ad6fe86c3f87e67d

  • SHA512

    39e5df1db48b1afe1c2bf7f2b8ccfca38b0fd4c49dd04884299fcc8adc633e6171a8756bf9eca65ac37b59ce6ef4a3fb3c761848a94c04d9afe725a53d008edd

  • SSDEEP

    3072:j877VGZ5Sd3b4e0wNZtsqXNKd5AvDJW4S+I/tZ6X1bpF6mIJ88:6GZYwAZHMCDJ8/u5pAmIe8

Malware Config

Extracted

Family

xenorat

C2

dns.stipamana.com

Mutex

Xeno_rat_nd8912d

Attributes
  • delay

    12000

  • install_path

    appdata

  • port

    4567

  • startup_name

    mrec

Signatures

  • Detect XenoRat Payload 3 IoCs
  • XenorRat

    XenorRat is a remote access trojan written in C#.

  • Xenorat family
  • Downloads MZ/PE file
  • Executes dropped EXE 8 IoCs
  • Loads dropped DLL 5 IoCs
  • Suspicious use of SetThreadContext 6 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

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

  • Office loads VBA resources, possible macro or embedded object present
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\13326ed69d36aaa385c5eba9fa6e5cc2.doc"
    1⤵
    • Loads dropped DLL
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1980
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\KKSTV.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\KKSTV.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2968
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\KKSTV.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\KKSTV.exe
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1248
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\KKSTV.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\KKSTV.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2004
        • C:\Users\Admin\AppData\Roaming\UpdateManager\KKSTV.exe
          "C:\Users\Admin\AppData\Roaming\UpdateManager\KKSTV.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1284
          • C:\Users\Admin\AppData\Roaming\UpdateManager\KKSTV.exe
            C:\Users\Admin\AppData\Roaming\UpdateManager\KKSTV.exe
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:2372
          • C:\Users\Admin\AppData\Roaming\UpdateManager\KKSTV.exe
            C:\Users\Admin\AppData\Roaming\UpdateManager\KKSTV.exe
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:1292
          • C:\Users\Admin\AppData\Roaming\UpdateManager\KKSTV.exe
            C:\Users\Admin\AppData\Roaming\UpdateManager\KKSTV.exe
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:316
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\KKSTV.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\KKSTV.exe
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3032
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /Create /TN "mrec" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFC88.tmp" /F
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2068
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2148

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpFC88.tmp

      Filesize

      1KB

      MD5

      276d8f1b7e05feed45e456295f52e4da

      SHA1

      902d0fcb164b5ad255185b04558618b51b824cf8

      SHA256

      06483d2faa061e06693dba1bb7f645fee992f94ffb713e6ebf30ae50ab288b5c

      SHA512

      893ec4b4358250389b6c7764145ef0aca8de5429ba983534d2205796296f747fcb20567ec99a6b9ccaef3903d795986b32572a7e6e5d9cb3e08b876c0f01db95

    • \Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\KKSTV.exe

      Filesize

      173KB

      MD5

      94a7e3859c2e4238421cdfe73d49603c

      SHA1

      03f03c5b5d8cf362aa52b9e793e7be398d779c21

      SHA256

      639135eb69333aba7ecb762072d8bef1d2db83e54edbe627dd223039142b8c91

      SHA512

      74048463606f7017bd8bd3c92773edde5a406247c5ea437b8ee580a3d9e65eb755aa44de466fc2aabef8b9a67c40163afeb3df9bc9fb35f8afe20814d5de85b5

    • memory/1248-65-0x0000000000400000-0x0000000000412000-memory.dmp

      Filesize

      72KB

    • memory/1248-73-0x0000000000400000-0x0000000000412000-memory.dmp

      Filesize

      72KB

    • memory/1248-69-0x0000000000400000-0x0000000000412000-memory.dmp

      Filesize

      72KB

    • memory/1284-86-0x0000000000500000-0x0000000000534000-memory.dmp

      Filesize

      208KB

    • memory/1284-85-0x0000000000CE0000-0x0000000000D10000-memory.dmp

      Filesize

      192KB

    • memory/1980-29-0x0000000005D20000-0x0000000005E20000-memory.dmp

      Filesize

      1024KB

    • memory/1980-0-0x000000002F721000-0x000000002F722000-memory.dmp

      Filesize

      4KB

    • memory/1980-30-0x0000000005D20000-0x0000000005E20000-memory.dmp

      Filesize

      1024KB

    • memory/1980-20-0x0000000005D20000-0x0000000005E20000-memory.dmp

      Filesize

      1024KB

    • memory/1980-2-0x0000000070D0D000-0x0000000070D18000-memory.dmp

      Filesize

      44KB

    • memory/1980-103-0x0000000070D0D000-0x0000000070D18000-memory.dmp

      Filesize

      44KB

    • memory/1980-104-0x0000000005D20000-0x0000000005E20000-memory.dmp

      Filesize

      1024KB

    • memory/1980-105-0x0000000005D20000-0x0000000005E20000-memory.dmp

      Filesize

      1024KB

    • memory/1980-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2968-62-0x0000000000240000-0x0000000000246000-memory.dmp

      Filesize

      24KB

    • memory/2968-63-0x0000000000340000-0x0000000000374000-memory.dmp

      Filesize

      208KB

    • memory/2968-64-0x00000000002A0000-0x00000000002A6000-memory.dmp

      Filesize

      24KB

    • memory/2968-61-0x0000000000380000-0x00000000003B0000-memory.dmp

      Filesize

      192KB