Analysis

  • max time kernel
    148s
  • max time network
    147s
  • platform
    windows10-1703_x64
  • resource
    win10-20220901-en
  • resource tags

    arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
  • submitted
    09/11/2022, 19:15

General

  • Target

    fb816a1b9ff22c57c03219df6113bbb91ef15734513a0b9722165280a990a3e7.xls

  • Size

    91KB

  • MD5

    6d388bfa6a9b5860d91065db186f6d55

  • SHA1

    7b371e3e070d46ce92d18109e7d6317411497e01

  • SHA256

    fb816a1b9ff22c57c03219df6113bbb91ef15734513a0b9722165280a990a3e7

  • SHA512

    a6e775d3cca84547f01ad346346ea7144bf846e595d28709d531c915086bc7b3bea4038ee40f1f8740cef5e48704c7952cd6ca3a410e44dbb3181c301859fc4b

  • SSDEEP

    1536:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgEbCXuZH4gb4CEn9J4ZMEM:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgF

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://www.muyehuayi.com/cmp/8asA99KPsyA/v6lUsWbLen/

xlm40.dropper

http://concivilpa.com.py/wp-admin/i3CQu9dzDrMW/

xlm40.dropper

https://wijsneusmedia.nl/cgi-bin/kFB/

xlm40.dropper

http://www.angloextrema.com.br/assets/oEt1yYckHKlnNIq/

Signatures

  • Process spawned unexpected child process 4 IoCs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\fb816a1b9ff22c57c03219df6113bbb91ef15734513a0b9722165280a990a3e7.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2476
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:5092
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:3600
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:4512
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:3964

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/2476-120-0x00007FFC91840000-0x00007FFC91850000-memory.dmp

          Filesize

          64KB

        • memory/2476-121-0x00007FFC91840000-0x00007FFC91850000-memory.dmp

          Filesize

          64KB

        • memory/2476-122-0x00007FFC91840000-0x00007FFC91850000-memory.dmp

          Filesize

          64KB

        • memory/2476-123-0x00007FFC91840000-0x00007FFC91850000-memory.dmp

          Filesize

          64KB

        • memory/2476-132-0x00007FFC8E0F0000-0x00007FFC8E100000-memory.dmp

          Filesize

          64KB

        • memory/2476-133-0x00007FFC8E0F0000-0x00007FFC8E100000-memory.dmp

          Filesize

          64KB