Analysis

  • max time kernel
    105s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    02-12-2022 15:34

General

  • Target

    242292b491b22ad3979f46cc8c2b02f2515ed75cbee2a28be5552982ec9f24ff.xls

  • Size

    99KB

  • MD5

    83d5200113e2bf6959ce1223d2dfbf45

  • SHA1

    1d0086925d2db09e95fcc30b962324fad472343e

  • SHA256

    242292b491b22ad3979f46cc8c2b02f2515ed75cbee2a28be5552982ec9f24ff

  • SHA512

    a7149f08ef1d32966a37243f2ee10a2236e140972cef536886a8c8b86eb4588a0ee7b41c924fff5fcbc2edbe552165410c96786595f53224ca9452b4d36a8c55

  • SSDEEP

    3072:xhl6Nc7yRzs1H75wkZUgsQ6NqTBun5oBtxuB22jcc0lbxOrpjhJtXwA:jl6Nc7yRzs1H75wkZUgsQ6NqTBun5oM

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 5 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\242292b491b22ad3979f46cc8c2b02f2515ed75cbee2a28be5552982ec9f24ff.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:1792
    • 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:300
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:288
    • 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:876
    • 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:1804

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/288-222-0x0000000000000000-mapping.dmp
  • memory/300-219-0x0000000000000000-mapping.dmp
  • memory/876-220-0x0000000000000000-mapping.dmp
  • memory/1792-54-0x000000002FF61000-0x000000002FF64000-memory.dmp
    Filesize

    12KB

  • memory/1792-55-0x0000000070DC1000-0x0000000070DC3000-memory.dmp
    Filesize

    8KB

  • memory/1792-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1792-57-0x0000000074DA1000-0x0000000074DA3000-memory.dmp
    Filesize

    8KB

  • memory/1792-58-0x0000000071DAD000-0x0000000071DB8000-memory.dmp
    Filesize

    44KB

  • memory/1792-223-0x0000000071DAD000-0x0000000071DB8000-memory.dmp
    Filesize

    44KB

  • memory/1792-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1792-385-0x0000000071DAD000-0x0000000071DB8000-memory.dmp
    Filesize

    44KB

  • memory/1804-221-0x0000000000000000-mapping.dmp