Analysis

  • max time kernel
    101s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 19:15

General

  • Target

    77e8d430646fee3f512edaf76bb2e2d0762a11595af1b87b6ede82eae8cba227.xls

  • Size

    94KB

  • MD5

    dc6edac97e74436f15c7a99d2e33ff72

  • SHA1

    6f3e881eb6f5657baf8c4666fa4db1f1302759fd

  • SHA256

    77e8d430646fee3f512edaf76bb2e2d0762a11595af1b87b6ede82eae8cba227

  • SHA512

    0e12835ae000ae19db1a29cc3991c2b4e84ecee491aed6f7072bf37e65ab859a60313ad625910ce6f0c877f97ea302ed38e762fe58c4ffc74b26b557b5e74bd4

  • SSDEEP

    1536:r999X9UgoRGx5/I9RizChe8EmXZ95WfRVQs2jcc0lbxOvTgZEM88kcJtXwd2u:ya2jcc0lbxOrwjnJtXwAu

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\77e8d430646fee3f512edaf76bb2e2d0762a11595af1b87b6ede82eae8cba227.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:1356
    • 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:1520
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1276
    • 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:1456
    • 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:1436

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/1276-62-0x0000000000000000-mapping.dmp
  • memory/1356-54-0x000000002F951000-0x000000002F954000-memory.dmp
    Filesize

    12KB

  • memory/1356-55-0x00000000717C1000-0x00000000717C3000-memory.dmp
    Filesize

    8KB

  • memory/1356-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1356-57-0x00000000727AD000-0x00000000727B8000-memory.dmp
    Filesize

    44KB

  • memory/1356-58-0x0000000075BA1000-0x0000000075BA3000-memory.dmp
    Filesize

    8KB

  • memory/1356-63-0x00000000727AD000-0x00000000727B8000-memory.dmp
    Filesize

    44KB

  • memory/1356-64-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1356-65-0x00000000727AD000-0x00000000727B8000-memory.dmp
    Filesize

    44KB

  • memory/1436-61-0x0000000000000000-mapping.dmp
  • memory/1456-60-0x0000000000000000-mapping.dmp
  • memory/1520-59-0x0000000000000000-mapping.dmp