Analysis

  • max time kernel
    100s
  • max time network
    41s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    15-12-2022 19:19

General

  • Target

    67da26f647fcc28945839000a67553e1.xls

  • Size

    143KB

  • MD5

    67da26f647fcc28945839000a67553e1

  • SHA1

    939a291bb57d46505fad6b70026242a4c640acee

  • SHA256

    20ab8a9ab284a5d5574df7d018bd619e916e10f3f179d3955c63a7ebf25b69e2

  • SHA512

    ccff7660841dba60cd90d174e6b166181b3513e0a8ea453c372fab7a0ee7273556ab9f3af8903898740a7420f3ccbd532c74af5a7b6fa70567b54ca4f480b11a

  • SSDEEP

    3072:REzt+ca9JbcvzA7GmL2sQmN4Rd5W8ozZATHWVbVzQ7ITk9btfX1qCN5kW:REzt+ca9JbcvzA7GmL2sQmN4Rd5W8oA1

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\67da26f647fcc28945839000a67553e1.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:748
    • 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:1776
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1684
    • 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:1932
    • 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:472

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/472-215-0x0000000000000000-mapping.dmp
  • memory/748-54-0x000000002F891000-0x000000002F894000-memory.dmp
    Filesize

    12KB

  • memory/748-55-0x00000000713C1000-0x00000000713C3000-memory.dmp
    Filesize

    8KB

  • memory/748-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/748-57-0x00000000723AD000-0x00000000723B8000-memory.dmp
    Filesize

    44KB

  • memory/748-58-0x0000000074FB1000-0x0000000074FB3000-memory.dmp
    Filesize

    8KB

  • memory/748-371-0x00000000723AD000-0x00000000723B8000-memory.dmp
    Filesize

    44KB

  • memory/748-372-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/748-373-0x00000000723AD000-0x00000000723B8000-memory.dmp
    Filesize

    44KB

  • memory/1684-216-0x0000000000000000-mapping.dmp
  • memory/1776-213-0x0000000000000000-mapping.dmp
  • memory/1932-214-0x0000000000000000-mapping.dmp