Analysis

  • max time kernel
    110s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2022 12:12

General

  • Target

    0ae9f28c4df9a8ebfb2f7a2976da3916be8560e87cf908cff220671c37b15d78.xls

  • Size

    140KB

  • MD5

    042ca2269bc8e992fbc64d63cd49f640

  • SHA1

    55dd9b8906abebc8b166e67e45245591d1387895

  • SHA256

    0ae9f28c4df9a8ebfb2f7a2976da3916be8560e87cf908cff220671c37b15d78

  • SHA512

    197a670f767e5001972623c7cb0e26709f2b3a0707737cc0bb4c384d53e28d8d1ae6203698a0e0ac50649292405106b21204f5a5617034e4c7ccd4146377e3b5

  • SSDEEP

    3072:ji1A+ayP4uL5MW2jcc0lbxOAHggJtXwc:cNaW

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\0ae9f28c4df9a8ebfb2f7a2976da3916be8560e87cf908cff220671c37b15d78.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:2040
    • 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:1824
    • 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:884
    • 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:1648

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/884-214-0x0000000000000000-mapping.dmp
  • memory/1648-215-0x0000000000000000-mapping.dmp
  • memory/1776-213-0x0000000000000000-mapping.dmp
  • memory/1824-216-0x0000000000000000-mapping.dmp
  • memory/2040-54-0x000000002F461000-0x000000002F464000-memory.dmp
    Filesize

    12KB

  • memory/2040-55-0x0000000071501000-0x0000000071503000-memory.dmp
    Filesize

    8KB

  • memory/2040-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/2040-57-0x00000000724ED000-0x00000000724F8000-memory.dmp
    Filesize

    44KB

  • memory/2040-58-0x0000000075C21000-0x0000000075C23000-memory.dmp
    Filesize

    8KB

  • memory/2040-371-0x00000000724ED000-0x00000000724F8000-memory.dmp
    Filesize

    44KB

  • memory/2040-372-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/2040-373-0x00000000724ED000-0x00000000724F8000-memory.dmp
    Filesize

    44KB