Analysis

  • max time kernel
    105s
  • max time network
    138s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    05-12-2022 16:16

General

  • Target

    bfb0164df5b9949fa61a1296148496efba5a9454ce07f608dc58165b046137a3.xls

  • Size

    217KB

  • MD5

    ad2c81a2d29101f0c36f9ba1f99b701c

  • SHA1

    4f08c48852a7feab790316eb31b91345d4bc222a

  • SHA256

    bfb0164df5b9949fa61a1296148496efba5a9454ce07f608dc58165b046137a3

  • SHA512

    b246d3e011cce9d2060d44668ee80c171acc7383cff18b8175a1c673287e33ca3a08ec7529a8489c33a29aceddaab720ebc6a1217b7eb035c6e62e4d98f28f23

  • SSDEEP

    6144:OKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgByY+TAQXTHGUMEyP5p6f5jQm4:wbGUMVWlb4

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://ftp.agir-santeinternationale.com/doctors/KAacngW97n4ApzVBDdGy/

xlm40.dropper

http://www.vinyz.com/admin3693/BDFFgAZ6zBRumcUSG/

xlm40.dropper

http://ly.yjlianyi.top/wp-admin/NRAdJ/

xlm40.dropper

http://www.muyehuayi.com/cmp/Vtm2m7z88g/

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 3 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\bfb0164df5b9949fa61a1296148496efba5a9454ce07f608dc58165b046137a3.xls
    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:328
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1696
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:428
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:768
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1656

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/328-54-0x000000002FD61000-0x000000002FD64000-memory.dmp
    Filesize

    12KB

  • memory/328-55-0x0000000071A81000-0x0000000071A83000-memory.dmp
    Filesize

    8KB

  • memory/328-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/328-57-0x0000000072A6D000-0x0000000072A78000-memory.dmp
    Filesize

    44KB

  • memory/328-58-0x0000000075ED1000-0x0000000075ED3000-memory.dmp
    Filesize

    8KB

  • memory/328-59-0x0000000072A6D000-0x0000000072A78000-memory.dmp
    Filesize

    44KB

  • memory/428-62-0x0000000000000000-mapping.dmp
  • memory/768-64-0x0000000000000000-mapping.dmp
  • memory/1656-66-0x0000000000000000-mapping.dmp
  • memory/1696-60-0x0000000000000000-mapping.dmp