Analysis

  • max time kernel
    106s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    27-11-2022 02:54

General

  • Target

    c95512b09c87d0edbdf990c053e9193d2479b8db30d652e6c04fe120931541c6.xls

  • Size

    169KB

  • MD5

    435fdab96799a0aa379643c71653dc8b

  • SHA1

    6fd489b5795d7e5c8de6fcdacf5b41494f7c247e

  • SHA256

    c95512b09c87d0edbdf990c053e9193d2479b8db30d652e6c04fe120931541c6

  • SHA512

    f92c5a2279b77027aacfb30efaff8067f1c32613aa8228a8582b3bd6747de3d3a2a8b3bb7338f54ce6215dc1d65d0f8ec69bbd3313c3ca1833e7a33f56fa1148

  • SSDEEP

    3072:01TLjmvu0Mb/edr16mK4WHbAkwJWVb95izQ7ITk9jYJtXwjv4xry:9DK6Mq

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 3 IoCs

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

  • Deletes itself 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • Views/modifies file attributes 1 TTPs 1 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\c95512b09c87d0edbdf990c053e9193d2479b8db30d652e6c04fe120931541c6.xls
    1⤵
    • Deletes itself
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • NTFS ADS
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: RenamesItself
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1352
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:1152
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1644
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
      2⤵
      • Process spawned unexpected child process
      PID:1076
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
      2⤵
      • Process spawned unexpected child process
      PID:744

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Hidden Files and Directories

1
T1158

Defense Evasion

Modify Registry

1
T1112

Hidden Files and Directories

1
T1158

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/744-221-0x0000000000000000-mapping.dmp
  • memory/1076-220-0x0000000000000000-mapping.dmp
  • memory/1152-219-0x0000000000000000-mapping.dmp
  • memory/1352-54-0x000000002FDD1000-0x000000002FDD4000-memory.dmp
    Filesize

    12KB

  • memory/1352-55-0x0000000071881000-0x0000000071883000-memory.dmp
    Filesize

    8KB

  • memory/1352-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1352-57-0x000000007286D000-0x0000000072878000-memory.dmp
    Filesize

    44KB

  • memory/1352-58-0x0000000075931000-0x0000000075933000-memory.dmp
    Filesize

    8KB

  • memory/1352-223-0x000000007286D000-0x0000000072878000-memory.dmp
    Filesize

    44KB

  • memory/1352-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1352-385-0x000000007286D000-0x0000000072878000-memory.dmp
    Filesize

    44KB

  • memory/1644-222-0x0000000000000000-mapping.dmp