Analysis

  • max time kernel
    106s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    26-11-2022 20:03

General

  • Target

    fb3351810c7b2f776cf8c7bc9a98836cc7fe89c6a1197e5c24bdad21b7eeb08e.xls

  • Size

    214KB

  • MD5

    0dfe9e30eee8d65f46754dfaf9b0ab03

  • SHA1

    9a549d0d446f03f2e2bc2de8484efbf61d49089b

  • SHA256

    fb3351810c7b2f776cf8c7bc9a98836cc7fe89c6a1197e5c24bdad21b7eeb08e

  • SHA512

    b4476133a07531ef0c24b44b7c97284b0b6dc35b0e74106b098f29b20628a1666e00afdbf10713a3e843375405f90832673ca9ed90c8c0fdd47980f30695f70c

  • SSDEEP

    3072:rQUJBhwk97bur8yhwc9CpWVbrzQ7ITkIW1uDamLUV:EUCIU3V6

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\fb3351810c7b2f776cf8c7bc9a98836cc7fe89c6a1197e5c24bdad21b7eeb08e.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:2004
    • 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:2016
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1564
    • 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:468
    • 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:1072

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/468-220-0x0000000000000000-mapping.dmp
  • memory/1072-221-0x0000000000000000-mapping.dmp
  • memory/1564-222-0x0000000000000000-mapping.dmp
  • memory/2004-57-0x0000000071D0D000-0x0000000071D18000-memory.dmp
    Filesize

    44KB

  • memory/2004-58-0x0000000074AB1000-0x0000000074AB3000-memory.dmp
    Filesize

    8KB

  • memory/2004-54-0x000000002F1F1000-0x000000002F1F4000-memory.dmp
    Filesize

    12KB

  • memory/2004-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/2004-55-0x0000000070D21000-0x0000000070D23000-memory.dmp
    Filesize

    8KB

  • memory/2004-223-0x0000000071D0D000-0x0000000071D18000-memory.dmp
    Filesize

    44KB

  • memory/2004-315-0x00000000056C0000-0x00000000057C0000-memory.dmp
    Filesize

    1024KB

  • memory/2004-337-0x00000000056C0000-0x00000000057C0000-memory.dmp
    Filesize

    1024KB

  • memory/2004-359-0x00000000056C0000-0x00000000057C0000-memory.dmp
    Filesize

    1024KB

  • memory/2004-385-0x0000000071D0D000-0x0000000071D18000-memory.dmp
    Filesize

    44KB

  • memory/2016-219-0x0000000000000000-mapping.dmp