Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    18-11-2022 02:56

General

  • Target

    MAIL_07112022.xls

  • Size

    255KB

  • MD5

    4a39482f8109165a29e5f2982c57a895

  • SHA1

    1bd892084eb45b67781ec482c9e4e5e860241b32

  • SHA256

    3809cb404f536733812960e2c738de5fded540678064ff026583e48e4f7b3025

  • SHA512

    d7e8f5361a9e9b82b2f51dd62e570659719ad34079db8d355e852760cd97974efc74315ff0cee5e611fa8b5528468f34b2dbf9205e40371a89b97752c7e77261

  • SSDEEP

    6144:6Kpb8rGYrMPe3q7Q0XV5xtuEsi8/dgUNiwrfx9rNFMMrttRzV5Dz3UxqC8LUcSd:YNbDjP9XH5XIqZLnSd

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://demarsoft.com/ALPHAINSTALLS.US/lTsjpA6/

xlm40.dropper

http://clockworktradeservices.com/wp-admin/uFRWXkuTnDAbQtIO/

xlm40.dropper

http://cloudxml.com.br/L45R4qJJFH/ESXAIhm/

xlm40.dropper

https://copunupo.ac.zm/cgi-bin/bNoAgU9/

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\MAIL_07112022.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:1836
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:896
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1396
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1984
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1084

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\oxnv2.ooccxx

    Filesize

    6KB

    MD5

    2826b1e7af14a75fee51d4e4534eeff5

    SHA1

    c9eab9b2b15cffc0273b3f8d197007b025018838

    SHA256

    8cc3fe518e10bfedd841106b51a5b0fbc337161cfc4d7360db0436ee9d1a68e5

    SHA512

    1c77d4a9ede815b53df07220742e43a180097f066be9a6c3ac22f573910955ddb0047700f9f277bd6c794d8560865ad28cf58de40bb1f939ea4c8cf7f28ba39e

  • memory/896-59-0x0000000000000000-mapping.dmp

  • memory/1084-67-0x0000000000000000-mapping.dmp

  • memory/1396-61-0x0000000000000000-mapping.dmp

  • memory/1836-54-0x000000002FFC1000-0x000000002FFC4000-memory.dmp

    Filesize

    12KB

  • memory/1836-55-0x0000000070CF1000-0x0000000070CF3000-memory.dmp

    Filesize

    8KB

  • memory/1836-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1836-57-0x0000000071CDD000-0x0000000071CE8000-memory.dmp

    Filesize

    44KB

  • memory/1836-58-0x0000000075771000-0x0000000075773000-memory.dmp

    Filesize

    8KB

  • memory/1836-66-0x0000000071CDD000-0x0000000071CE8000-memory.dmp

    Filesize

    44KB

  • memory/1984-64-0x0000000000000000-mapping.dmp