Analysis

  • max time kernel
    101s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29-11-2022 08:44

General

  • Target

    e581f97cce64bca3f992af9f02ef79565ad098f36e910f575d0a5a81da91ab26.xls

  • Size

    97KB

  • MD5

    03d162680366fbed67788d7c34f9c9d8

  • SHA1

    930352f45a0a04c34f40ed67030e02ed186baa09

  • SHA256

    e581f97cce64bca3f992af9f02ef79565ad098f36e910f575d0a5a81da91ab26

  • SHA512

    fb281e89ea83b8f75992075d0e4525e93ab4bbdb399acba6bd78c8caea806d7f3567de5c2bec2099f040e63314624998298ac95c06dcc6d08f50cc4931ee74f9

  • SSDEEP

    1536:hmmfrN1fN0TU2TDEYHn20MtKryuMSJdAs6DA4jO1vH5hk1u2jcc0lbxOqTgZO2+9:iJdj/5Z2jcc0lbxOKw+dJtXwTRkP

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 4 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 20 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\e581f97cce64bca3f992af9f02ef79565ad098f36e910f575d0a5a81da91ab26.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:836
    • 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:900
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1872
    • 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:268
    • 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:952
    • C:\Windows\SysWOW64\wscript.exe
      "C:\Windows\System32\wscript.exe" E:\KK\e581f97cce64bca3f992af9f02ef79565ad098f36e910f575d0a5a81da91ab26_Search.vbs
      2⤵
      • Process spawned unexpected child process
      PID:1768

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/268-220-0x0000000000000000-mapping.dmp
  • memory/836-57-0x0000000075A11000-0x0000000075A13000-memory.dmp
    Filesize

    8KB

  • memory/836-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/836-54-0x000000002FFD1000-0x000000002FFD4000-memory.dmp
    Filesize

    12KB

  • memory/836-58-0x0000000071EBD000-0x0000000071EC8000-memory.dmp
    Filesize

    44KB

  • memory/836-55-0x0000000070ED1000-0x0000000070ED3000-memory.dmp
    Filesize

    8KB

  • memory/836-223-0x0000000071EBD000-0x0000000071EC8000-memory.dmp
    Filesize

    44KB

  • memory/836-429-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/836-430-0x0000000071EBD000-0x0000000071EC8000-memory.dmp
    Filesize

    44KB

  • memory/900-219-0x0000000000000000-mapping.dmp
  • memory/952-221-0x0000000000000000-mapping.dmp
  • memory/1768-312-0x0000000000000000-mapping.dmp
  • memory/1872-222-0x0000000000000000-mapping.dmp