Analysis

  • max time kernel
    114s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    29-11-2022 08:45

General

  • Target

    2461d35a86e8c4058d3d8e8a538e1fcb3522ec628bd627dad5a146a4924a9b4a.xls

  • Size

    193KB

  • MD5

    2ee6db97049ae5df0187e6dac3fe3b91

  • SHA1

    f73953e1ed8f6f08b608ffcecaa1187171f09deb

  • SHA256

    2461d35a86e8c4058d3d8e8a538e1fcb3522ec628bd627dad5a146a4924a9b4a

  • SHA512

    0b3c3120972d9679c9b0ad51f5e897a6e3f05bf49641f4723be22b64c2dbf7a97ee822542f438e67740049bbed33dd1238f19dabcceef473dfc8b7fc13290ffc

  • SSDEEP

    6144:n1gxv7yZmspH7+cclKisMaX+9PwRnmzI:

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 4 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 FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 20 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\2461d35a86e8c4058d3d8e8a538e1fcb3522ec628bd627dad5a146a4924a9b4a.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 FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:940
    • 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:2020
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:816
    • 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:1908
    • 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:1620
    • C:\Windows\SysWOW64\wscript.exe
      "C:\Windows\System32\wscript.exe" E:\KK\2461d35a86e8c4058d3d8e8a538e1fcb3522ec628bd627dad5a146a4924a9b4a_Search.vbs
      2⤵
      • Process spawned unexpected child process
      PID:1532

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/816-62-0x0000000000000000-mapping.dmp
  • memory/940-63-0x0000000071FBD000-0x0000000071FC8000-memory.dmp
    Filesize

    44KB

  • memory/940-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/940-57-0x0000000071FBD000-0x0000000071FC8000-memory.dmp
    Filesize

    44KB

  • memory/940-58-0x0000000074DE1000-0x0000000074DE3000-memory.dmp
    Filesize

    8KB

  • memory/940-55-0x0000000070FD1000-0x0000000070FD3000-memory.dmp
    Filesize

    8KB

  • memory/940-54-0x000000002F831000-0x000000002F834000-memory.dmp
    Filesize

    12KB

  • memory/940-65-0x000000006C2D1000-0x000000006C2D3000-memory.dmp
    Filesize

    8KB

  • memory/940-66-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/940-67-0x0000000071FBD000-0x0000000071FC8000-memory.dmp
    Filesize

    44KB

  • memory/1532-64-0x0000000000000000-mapping.dmp
  • memory/1620-60-0x0000000000000000-mapping.dmp
  • memory/1908-61-0x0000000000000000-mapping.dmp
  • memory/2020-59-0x0000000000000000-mapping.dmp