Analysis

  • max time kernel
    102s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    31-01-2023 17:28

General

  • Target

    efe1343a32189f1b774f4c5e51f41de1.xls

  • Size

    300KB

  • MD5

    efe1343a32189f1b774f4c5e51f41de1

  • SHA1

    a9a9f1bdf0ac76147f217a6cea31490d4ec8d72a

  • SHA256

    91de33cf3d07e3b8353ff1bdf3f86ae148c4e54206efd265ed4eb50a2ba7cd41

  • SHA512

    f68de19a8fc5db34f0aa6b21a53823a131d3aeb38d484a6ff7013ce544360a2f51fb2975d128cc4050cecc3e97f205dd4a1114f93b2ecffc4fadb329ee62ac61

  • SSDEEP

    3072:YLm7v9y02M3/yPffiSRRRDLuTxXnPjAYHOEHEGjq4yWgWDecBGPfeZj1HHebx8k0:5vY02M3/rpuEweMY48F8CO+T

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\efe1343a32189f1b774f4c5e51f41de1.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:1308
    • 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:1972
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1588
    • 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:1948
    • 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:1660

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/1308-75-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-59-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1308-54-0x000000002FE51000-0x000000002FE54000-memory.dmp
    Filesize

    12KB

  • memory/1308-58-0x0000000071FCD000-0x0000000071FD8000-memory.dmp
    Filesize

    44KB

  • memory/1308-73-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-60-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-74-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-70-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-85-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-86-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-84-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-83-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-82-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-81-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-80-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-79-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-78-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-77-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-76-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-57-0x00000000759F1000-0x00000000759F3000-memory.dmp
    Filesize

    8KB

  • memory/1308-55-0x0000000070FE1000-0x0000000070FE3000-memory.dmp
    Filesize

    8KB

  • memory/1308-61-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-72-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-71-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-69-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-68-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-67-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-66-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-65-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-64-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-63-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-62-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-87-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-109-0x00000000005FF000-0x0000000000603000-memory.dmp
    Filesize

    16KB

  • memory/1308-385-0x0000000071FCD000-0x0000000071FD8000-memory.dmp
    Filesize

    44KB

  • memory/1308-383-0x0000000071FCD000-0x0000000071FD8000-memory.dmp
    Filesize

    44KB

  • memory/1588-222-0x0000000000000000-mapping.dmp
  • memory/1660-221-0x0000000000000000-mapping.dmp
  • memory/1948-220-0x0000000000000000-mapping.dmp
  • memory/1972-219-0x0000000000000000-mapping.dmp