Analysis

  • max time kernel
    100s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    02-12-2022 15:34

General

  • Target

    24293e41797585b917da5353fc34c195ffa689942aecaa0c00476aa467c1e8fc.xls

  • Size

    109KB

  • MD5

    49087a345a03c5819428061ecf6ecb7a

  • SHA1

    1483632ab84435e9b737b0475038fc1334ec7757

  • SHA256

    24293e41797585b917da5353fc34c195ffa689942aecaa0c00476aa467c1e8fc

  • SHA512

    779c026c708ea4187b0d36428a30edfdca76fe64c0c7f3d51b6c99430afbf045802cbc24d749a3f5578dca6168c617283c447ddc99dbba94f31da691c794b2b3

  • SSDEEP

    1536:a444405WF37DySNiWhB4yajcZlZ958Y8I1sYWNWV8p4rzQ7ITkiD2lJdUcJtXwRQ:kwIEWV8KrzQ7ITkDZXJtXw/R5kgX36

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\24293e41797585b917da5353fc34c195ffa689942aecaa0c00476aa467c1e8fc.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:1944
    • 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:600
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1248
    • 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:1216
    • 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:672

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/600-219-0x0000000000000000-mapping.dmp
  • memory/672-221-0x0000000000000000-mapping.dmp
  • memory/1216-220-0x0000000000000000-mapping.dmp
  • memory/1248-222-0x0000000000000000-mapping.dmp
  • memory/1944-224-0x0000000005860000-0x0000000005960000-memory.dmp
    Filesize

    1024KB

  • memory/1944-387-0x0000000005860000-0x0000000005960000-memory.dmp
    Filesize

    1024KB

  • memory/1944-57-0x0000000075CF1000-0x0000000075CF3000-memory.dmp
    Filesize

    8KB

  • memory/1944-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1944-55-0x0000000071D01000-0x0000000071D03000-memory.dmp
    Filesize

    8KB

  • memory/1944-223-0x0000000005860000-0x0000000005960000-memory.dmp
    Filesize

    1024KB

  • memory/1944-54-0x000000002FCF1000-0x000000002FCF4000-memory.dmp
    Filesize

    12KB

  • memory/1944-385-0x0000000005860000-0x0000000005960000-memory.dmp
    Filesize

    1024KB

  • memory/1944-386-0x0000000005860000-0x0000000005960000-memory.dmp
    Filesize

    1024KB

  • memory/1944-58-0x0000000072CED000-0x0000000072CF8000-memory.dmp
    Filesize

    44KB

  • memory/1944-388-0x0000000005860000-0x0000000005960000-memory.dmp
    Filesize

    1024KB

  • memory/1944-389-0x0000000005860000-0x0000000005960000-memory.dmp
    Filesize

    1024KB

  • memory/1944-390-0x0000000072CED000-0x0000000072CF8000-memory.dmp
    Filesize

    44KB

  • memory/1944-391-0x0000000005860000-0x0000000005960000-memory.dmp
    Filesize

    1024KB

  • memory/1944-392-0x0000000005860000-0x0000000005960000-memory.dmp
    Filesize

    1024KB

  • memory/1944-393-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1944-394-0x0000000072CED000-0x0000000072CF8000-memory.dmp
    Filesize

    44KB