Analysis

  • max time kernel
    106s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 19:25

General

  • Target

    839ea835bb76f39f715466a4202ca744296cefea697f759bf1fc187474ac5901.xls

  • Size

    91KB

  • MD5

    7ddca9abc349d44f1c7b1c15936cef81

  • SHA1

    fcae9e73cb428d380f19d61d72503d2809d707c2

  • SHA256

    839ea835bb76f39f715466a4202ca744296cefea697f759bf1fc187474ac5901

  • SHA512

    c95df966bf69a20a0500e79ad05f2dc238befa0fb85cb1a0a3fe3ff6d511eddb7a06a8fe80de92167998a10e7c529809fa361151b31306eea636cecf7d614011

  • SSDEEP

    1536:1888wOJytNnoWVbr3Q7ITkMXr62lGM88S4JtXwnjdd:JoWVbr3Q7ITk8tjNJtXwjdd

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 3 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\839ea835bb76f39f715466a4202ca744296cefea697f759bf1fc187474ac5901.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:1128
    • 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:516
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1800
    • 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:1556
    • 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:548

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/516-219-0x0000000000000000-mapping.dmp
  • memory/548-221-0x0000000000000000-mapping.dmp
  • memory/1128-54-0x000000002FED1000-0x000000002FED4000-memory.dmp
    Filesize

    12KB

  • memory/1128-55-0x0000000071BE1000-0x0000000071BE3000-memory.dmp
    Filesize

    8KB

  • memory/1128-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1128-57-0x0000000072BCD000-0x0000000072BD8000-memory.dmp
    Filesize

    44KB

  • memory/1128-58-0x0000000076961000-0x0000000076963000-memory.dmp
    Filesize

    8KB

  • memory/1128-383-0x0000000072BCD000-0x0000000072BD8000-memory.dmp
    Filesize

    44KB

  • memory/1128-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1128-385-0x0000000072BCD000-0x0000000072BD8000-memory.dmp
    Filesize

    44KB

  • memory/1556-220-0x0000000000000000-mapping.dmp
  • memory/1800-222-0x0000000000000000-mapping.dmp