Analysis

  • max time kernel
    169s
  • max time network
    160s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    09/11/2022, 19:10

General

  • Target

    a17257a4a1a71d882ccfd9037e726639b49a70bde211c5dc647492f26d27c430.xls

  • Size

    91KB

  • MD5

    50edf8e28a4c5f13e49b31a07ce50ab5

  • SHA1

    73dcd5bb08692eedccc64c5e42d450acb4961ea9

  • SHA256

    a17257a4a1a71d882ccfd9037e726639b49a70bde211c5dc647492f26d27c430

  • SHA512

    3c2ec56da9616f23a69ededeeb21cfc86d7e5750701a14e498e2a5e21bf99316175f90330cc0c8cad6224a9ea28a61624112b7132277c1b7a72d0e98d7024772

  • 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\a17257a4a1a71d882ccfd9037e726639b49a70bde211c5dc647492f26d27c430.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:3100
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:4248
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:4780
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:4480
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:3796

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/3100-294-0x00007FFEEABE0000-0x00007FFEEABF0000-memory.dmp

          Filesize

          64KB

        • memory/3100-117-0x00007FFEEABE0000-0x00007FFEEABF0000-memory.dmp

          Filesize

          64KB

        • memory/3100-118-0x00007FFEEABE0000-0x00007FFEEABF0000-memory.dmp

          Filesize

          64KB

        • memory/3100-119-0x00007FFEEABE0000-0x00007FFEEABF0000-memory.dmp

          Filesize

          64KB

        • memory/3100-128-0x00007FFEE7DF0000-0x00007FFEE7E00000-memory.dmp

          Filesize

          64KB

        • memory/3100-129-0x00007FFEE7DF0000-0x00007FFEE7E00000-memory.dmp

          Filesize

          64KB

        • memory/3100-297-0x00007FFEEABE0000-0x00007FFEEABF0000-memory.dmp

          Filesize

          64KB

        • memory/3100-296-0x00007FFEEABE0000-0x00007FFEEABF0000-memory.dmp

          Filesize

          64KB

        • memory/3100-295-0x00007FFEEABE0000-0x00007FFEEABF0000-memory.dmp

          Filesize

          64KB

        • memory/3100-116-0x00007FFEEABE0000-0x00007FFEEABF0000-memory.dmp

          Filesize

          64KB