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
    21-11-2022 12:12

General

  • Target

    1b69d146c7dd72366916077c7762216f0cb9471f7340d4798cf63f23decf53ae.xls

  • Size

    80KB

  • MD5

    3902b3a08f55d5c5bd09c6bdce56e410

  • SHA1

    ae19521054f7f35590cf4e1589e5a4a76b43b5bf

  • SHA256

    1b69d146c7dd72366916077c7762216f0cb9471f7340d4798cf63f23decf53ae

  • SHA512

    1a14c3d4705d8c08a4b34558a926e0a4bc34c47c84f3f1ea46083398fe4a8348f9a8d8e1856be4343a5267ae03173072cfd6f765c92d3f28ebe842d26ddfc85b

  • SSDEEP

    1536:B8Suii1W1+aRhJ2jcc0lbxOvTgB4sY7nJdMcOu4/WwF1vnh:2Yr2jcc0lbxOrR4B/h

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\1b69d146c7dd72366916077c7762216f0cb9471f7340d4798cf63f23decf53ae.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:1664
    • 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:676
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1832
    • 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:1916
    • 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:652

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/652-221-0x0000000000000000-mapping.dmp
  • memory/676-219-0x0000000000000000-mapping.dmp
  • memory/1664-75-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-69-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-58-0x0000000071FED000-0x0000000071FF8000-memory.dmp
    Filesize

    44KB

  • memory/1664-78-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-66-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-68-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-67-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-80-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-70-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-72-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-71-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-73-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-74-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-79-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-54-0x000000002F951000-0x000000002F954000-memory.dmp
    Filesize

    12KB

  • memory/1664-77-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-65-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-57-0x0000000075981000-0x0000000075983000-memory.dmp
    Filesize

    8KB

  • memory/1664-76-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-81-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-82-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-84-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-83-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-86-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-85-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-87-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-109-0x0000000000835000-0x000000000083E000-memory.dmp
    Filesize

    36KB

  • memory/1664-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1664-385-0x0000000071FED000-0x0000000071FF8000-memory.dmp
    Filesize

    44KB

  • memory/1664-55-0x0000000071001000-0x0000000071003000-memory.dmp
    Filesize

    8KB

  • memory/1664-383-0x0000000071FED000-0x0000000071FF8000-memory.dmp
    Filesize

    44KB

  • memory/1832-222-0x0000000000000000-mapping.dmp
  • memory/1916-220-0x0000000000000000-mapping.dmp