Analysis

  • max time kernel
    103s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    08-03-2023 07:11

General

  • Target

    98101bd92ceabfc2480c3c46e11daa78.xls

  • Size

    133KB

  • MD5

    98101bd92ceabfc2480c3c46e11daa78

  • SHA1

    698368b0b404b50535eba8822920af89db589c32

  • SHA256

    2f59a965be50904310224b119cc576583edea798ea63439c0f79154f07ade6b8

  • SHA512

    6b2daff3203e665e05a1a290d28a75a9c005a57f3362460fa2c77636cdd330afb17f062a68cec9978cd5bfafa70f34de5151c50dfea4b053c6f8a3cd9ecfe03f

  • SSDEEP

    3072:NEKsv9dAVAboglgAQ3NRKcjJtXwdXjhZd6ad:4v9d5um

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\98101bd92ceabfc2480c3c46e11daa78.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:1380
    • 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:1736
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:992
    • 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:1740
    • 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:1276

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/1380-54-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1380-56-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-55-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-57-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-58-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-59-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-60-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-62-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-61-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-63-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-65-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-64-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-66-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-67-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-69-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-70-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-71-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-72-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-74-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-75-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-76-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-77-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-79-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-80-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-81-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-78-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-73-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-68-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-82-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-83-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB

  • memory/1380-105-0x00000000002B0000-0x00000000003B0000-memory.dmp
    Filesize

    1024KB