Analysis

  • max time kernel
    105s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 12:06

General

  • Target

    eb9a7b82c9366b324df9fa233018245df9141c65b6f987b3abe12e99ea377054.xls

  • Size

    100KB

  • MD5

    e9b2d82f97dc682f9e1f189a0a5d5d44

  • SHA1

    be5728db9fb33fe44279c85fd952b87abec7174b

  • SHA256

    eb9a7b82c9366b324df9fa233018245df9141c65b6f987b3abe12e99ea377054

  • SHA512

    5ee9751be35f23f9c8f0c8b28648abe2acc627572c8527882540baf0d5e25e44e31c9efcf9eaff33f65280f1c37b19a4f0adcc4551334a7a3fc7f1d4a60f7427

  • SSDEEP

    3072:nNl6Nc7yRzs1H75wkZUgsQ6NqTBun5ox2jcc0lbxOrn/vX1qiRb:Nl6Nc7yRzs1H75wkZUgsQ6NqTBun5oIJ

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\eb9a7b82c9366b324df9fa233018245df9141c65b6f987b3abe12e99ea377054.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:2012
    • 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:1864
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1508
    • 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:1712
    • 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:968

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/968-221-0x0000000000000000-mapping.dmp
  • memory/1508-222-0x0000000000000000-mapping.dmp
  • memory/1712-220-0x0000000000000000-mapping.dmp
  • memory/1864-219-0x0000000000000000-mapping.dmp
  • memory/2012-54-0x000000002FFB1000-0x000000002FFB4000-memory.dmp
    Filesize

    12KB

  • memory/2012-55-0x0000000071011000-0x0000000071013000-memory.dmp
    Filesize

    8KB

  • memory/2012-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/2012-57-0x0000000071FFD000-0x0000000072008000-memory.dmp
    Filesize

    44KB

  • memory/2012-58-0x0000000074B51000-0x0000000074B53000-memory.dmp
    Filesize

    8KB

  • memory/2012-383-0x0000000071FFD000-0x0000000072008000-memory.dmp
    Filesize

    44KB

  • memory/2012-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/2012-385-0x0000000071FFD000-0x0000000072008000-memory.dmp
    Filesize

    44KB