Analysis

  • max time kernel
    146s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    27-11-2022 02:56

General

  • Target

    73c59fd6f013ff27bc8d917a611a3418c9391dc50d6f518f25b864dc66e0cea5.xls

  • Size

    142KB

  • MD5

    3bd7af11411bdc3117cdb2830b6b976a

  • SHA1

    f9095bb6b822827808e6a5a26124b9b1494eec3d

  • SHA256

    73c59fd6f013ff27bc8d917a611a3418c9391dc50d6f518f25b864dc66e0cea5

  • SHA512

    dabfb8ddd185a075b0c536b1918bdabfd69d228eaaa57e4246bb19d94912e1c1e01ae1cda49abcabcee8052b57c72f19e572e2adcb2044c8ad265faf10a1cdaf

  • SSDEEP

    3072:OTj03qHDdcmjcc0lbxOsv90w33XjUJtXwWKs:Ld33XuEs

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\73c59fd6f013ff27bc8d917a611a3418c9391dc50d6f518f25b864dc66e0cea5.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:1756
    • 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:916
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:948
    • 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:340
    • 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:628

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/340-220-0x0000000000000000-mapping.dmp
  • memory/628-221-0x0000000000000000-mapping.dmp
  • memory/916-219-0x0000000000000000-mapping.dmp
  • memory/948-222-0x0000000000000000-mapping.dmp
  • memory/1756-74-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-223-0x0000000071F1D000-0x0000000071F28000-memory.dmp
    Filesize

    44KB

  • memory/1756-60-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-76-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-62-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-63-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-71-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-70-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-69-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-68-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-67-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-66-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-65-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-64-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-72-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-73-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-54-0x000000002F191000-0x000000002F194000-memory.dmp
    Filesize

    12KB

  • memory/1756-75-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-61-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-59-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-84-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-85-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-83-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-81-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-82-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-80-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-79-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-78-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-77-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-87-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-109-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-58-0x0000000075291000-0x0000000075293000-memory.dmp
    Filesize

    8KB

  • memory/1756-57-0x0000000071F1D000-0x0000000071F28000-memory.dmp
    Filesize

    44KB

  • memory/1756-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1756-55-0x0000000070F31000-0x0000000070F33000-memory.dmp
    Filesize

    8KB

  • memory/1756-86-0x0000000000898000-0x000000000089C000-memory.dmp
    Filesize

    16KB

  • memory/1756-385-0x0000000071F1D000-0x0000000071F28000-memory.dmp
    Filesize

    44KB