Analysis

  • max time kernel
    122s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    20-09-2023 12:26

General

  • Target

    catalog-2048582418.xlsm

  • Size

    81KB

  • MD5

    b5f20259cc4d16c9608f7cc90e2df35b

  • SHA1

    c770a08241951d06e7c900f557cfaade4268c246

  • SHA256

    f5bfcf48c0cd34368b28b8ed027ef2c09d47133720f767633b2c1f8da3bb4b0e

  • SHA512

    3495abe20f881b5d201e1f3c56f0728d99cf645c7d2f3f799fe0d976caddd6fc38499ef1c9ed31a8fa1dfa2917d2d81ffe83098a375587bb83729d483ff31f98

  • SSDEEP

    1536:bhvD0tUn/dDuL7QQ64eyZJViW++poHndClu286aYbgBF+iyffn5:bVjwXQQteyZJAW++4dF286aYbgEfh

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://halle-auer20h.ru.com/lenta.html

xlm40.dropper

https://acienciaparaficarrico.com.br/drms/lenta.html

xlm40.dropper

https://deccanrestaurant.co.uk/drms/lenta.html

xlm40.dropper

https://steilppm.ac.id/drms/lenta.html

Signatures

  • Process spawned unexpected child process 4 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\catalog-2048582418.xlsm
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2092
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32 ..\xtjxjt.sdfg1,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:3000
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32 ..\xtjxjt.sdfg2,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:2608
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32 ..\xtjxjt.sdfg3,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:2644
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32 ..\xtjxjt.sdfg4,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:2636

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2092-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2092-1-0x000000007220D000-0x0000000072218000-memory.dmp

    Filesize

    44KB

  • memory/2092-2-0x000000007220D000-0x0000000072218000-memory.dmp

    Filesize

    44KB

  • memory/2092-8-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2092-9-0x000000007220D000-0x0000000072218000-memory.dmp

    Filesize

    44KB