Analysis

  • max time kernel
    119s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 19:24

General

  • Target

    b808daf0c156bc4e8c0031156d9c4aa223ee03b275ff3bf640d7f7e8bddcf665.xls

  • Size

    87KB

  • MD5

    dbb489872d9750ab7369412cfdc47006

  • SHA1

    bb949eba226a3ad414c424b35936487e741a2e70

  • SHA256

    b808daf0c156bc4e8c0031156d9c4aa223ee03b275ff3bf640d7f7e8bddcf665

  • SHA512

    a124d544ed7bd71fc1f5474a25264bdbfaf21d4c5f1c676417bb24443616134814790c51e0faf195d3fdf2a68f38e073cad9b064040efa8f205c3a7823da9566

  • SSDEEP

    1536:LOOOzLf/JWOWS7RWVbrzQ7IT9vQx23S2XOX1kWPKN1:EWVbrzQ7ITR3F+X1kiu1

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\b808daf0c156bc4e8c0031156d9c4aa223ee03b275ff3bf640d7f7e8bddcf665.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:564
    • 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:1924
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:980
    • 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:1212
    • 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:1576

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/564-54-0x000000002FE81000-0x000000002FE84000-memory.dmp
    Filesize

    12KB

  • memory/564-55-0x0000000071071000-0x0000000071073000-memory.dmp
    Filesize

    8KB

  • memory/564-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/564-57-0x000000007205D000-0x0000000072068000-memory.dmp
    Filesize

    44KB

  • memory/564-58-0x0000000075D01000-0x0000000075D03000-memory.dmp
    Filesize

    8KB

  • memory/564-59-0x000000007205D000-0x0000000072068000-memory.dmp
    Filesize

    44KB

  • memory/564-224-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/564-225-0x000000007205D000-0x0000000072068000-memory.dmp
    Filesize

    44KB

  • memory/980-223-0x0000000000000000-mapping.dmp
  • memory/1212-221-0x0000000000000000-mapping.dmp
  • memory/1576-222-0x0000000000000000-mapping.dmp
  • memory/1924-220-0x0000000000000000-mapping.dmp