Analysis

  • max time kernel
    113s
  • max time network
    41s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    02-12-2022 15:32

General

  • Target

    ae55834c2e529f9693c0c56c8856cc75d6f135fee3b8b4fe211e117bc525f298.xls

  • Size

    254KB

  • MD5

    f38f7bf028a23cb9f0434f823b72b48b

  • SHA1

    f8439f280bf07f6927682aec049cd87683b96c85

  • SHA256

    ae55834c2e529f9693c0c56c8856cc75d6f135fee3b8b4fe211e117bc525f298

  • SHA512

    3ebc604c06aa9c5d9ddf50f554b83e0ce50a4cccd86bc1660012a5bba0897269078158be7d69e9560edaa42b3d35e483a19a33e698e177f246f8a29c956af59f

  • SSDEEP

    6144:ml6Nc7yRzs1H75wkZUgsGaX+9PwRnmRYkbSFaS:GYkbSR

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\ae55834c2e529f9693c0c56c8856cc75d6f135fee3b8b4fe211e117bc525f298.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:1928
    • 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:988
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:768
    • 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:2020
    • 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:1964

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/768-223-0x0000000000000000-mapping.dmp
  • memory/988-220-0x0000000000000000-mapping.dmp
  • memory/1928-54-0x000000002F2D1000-0x000000002F2D4000-memory.dmp
    Filesize

    12KB

  • memory/1928-55-0x0000000071A01000-0x0000000071A03000-memory.dmp
    Filesize

    8KB

  • memory/1928-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1928-57-0x00000000729ED000-0x00000000729F8000-memory.dmp
    Filesize

    44KB

  • memory/1928-58-0x00000000762B1000-0x00000000762B3000-memory.dmp
    Filesize

    8KB

  • memory/1928-59-0x00000000729ED000-0x00000000729F8000-memory.dmp
    Filesize

    44KB

  • memory/1928-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1928-385-0x00000000729ED000-0x00000000729F8000-memory.dmp
    Filesize

    44KB

  • memory/1964-222-0x0000000000000000-mapping.dmp
  • memory/2020-221-0x0000000000000000-mapping.dmp