Analysis

  • max time kernel
    102s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2022 12:12

General

  • Target

    6140a72a9ae488ff2e256a661512f60d789bbc7ba78ee704b8cd4ebdf04878c9.xls

  • Size

    115KB

  • MD5

    3bf774e7fe82f98908b7166cd8e6ed30

  • SHA1

    afed71ea48194518f8909ee7220c99d2bac0e2f4

  • SHA256

    6140a72a9ae488ff2e256a661512f60d789bbc7ba78ee704b8cd4ebdf04878c9

  • SHA512

    850024dedd8b915ea857fb5c536cfcc39003622f6b392645bd314283011433c41219aa117fd58fbdd07b3095b3eb1d4cf6509d8598156c697bb2044a2dcda28a

  • SSDEEP

    3072:45ul6Nc7yRzs1H75wkZUgsioAOO+jIcrbpWVbrzxG7ITk9H2AJtXwUekF:jl6Nc7yRzs1H75wkZUgsioAOO+jIcre2

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\6140a72a9ae488ff2e256a661512f60d789bbc7ba78ee704b8cd4ebdf04878c9.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:1748
    • 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:524
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1972
    • 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:564
    • 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:300

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/300-60-0x0000000000000000-mapping.dmp
  • memory/524-59-0x0000000000000000-mapping.dmp
  • memory/564-61-0x0000000000000000-mapping.dmp
  • memory/1748-57-0x0000000071FCD000-0x0000000071FD8000-memory.dmp
    Filesize

    44KB

  • memory/1748-58-0x00000000759F1000-0x00000000759F3000-memory.dmp
    Filesize

    8KB

  • memory/1748-54-0x000000002FCC1000-0x000000002FCC4000-memory.dmp
    Filesize

    12KB

  • memory/1748-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1748-55-0x0000000070FE1000-0x0000000070FE3000-memory.dmp
    Filesize

    8KB

  • memory/1748-62-0x0000000000402000-0x0000000000404000-memory.dmp
    Filesize

    8KB

  • memory/1748-64-0x0000000071FCD000-0x0000000071FD8000-memory.dmp
    Filesize

    44KB

  • memory/1748-65-0x0000000000402000-0x0000000000404000-memory.dmp
    Filesize

    8KB

  • memory/1748-66-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1748-67-0x0000000071FCD000-0x0000000071FD8000-memory.dmp
    Filesize

    44KB

  • memory/1972-63-0x0000000000000000-mapping.dmp