Analysis

  • max time kernel
    141s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2022 02:38

General

  • Target

    32ce1f42c6dcad7e2e39d586a66f414b7220d4c474f36b31650aca126c1ca24d.xls

  • Size

    378KB

  • MD5

    158a8b706fdbf03357252ceb14409dfe

  • SHA1

    eaa83cef9aecdc4655554dfbe8d612699ed5460e

  • SHA256

    32ce1f42c6dcad7e2e39d586a66f414b7220d4c474f36b31650aca126c1ca24d

  • SHA512

    17e9faa69b68cdf3200fe4112b786cb80483f9602c8befb1edcc64b79a12e2a34268777b145f25de11ed54ca94a8f4f2ef1b63321410bd395919b05fe482f3d6

  • SSDEEP

    6144:rfA5AkWQEPzuyyguS00PK+ra7KcCQQ3XWs2:kgB/0A5v2s

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 9 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\32ce1f42c6dcad7e2e39d586a66f414b7220d4c474f36b31650aca126c1ca24d.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:1740
    • 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:1908
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:784
    • 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:296
    • 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:1484

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/296-221-0x0000000000000000-mapping.dmp
  • memory/784-223-0x0000000000000000-mapping.dmp
  • memory/1484-222-0x0000000000000000-mapping.dmp
  • memory/1740-54-0x000000002F861000-0x000000002F864000-memory.dmp
    Filesize

    12KB

  • memory/1740-55-0x0000000071911000-0x0000000071913000-memory.dmp
    Filesize

    8KB

  • memory/1740-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1740-57-0x00000000728FD000-0x0000000072908000-memory.dmp
    Filesize

    44KB

  • memory/1740-58-0x0000000076531000-0x0000000076533000-memory.dmp
    Filesize

    8KB

  • memory/1740-59-0x00000000728FD000-0x0000000072908000-memory.dmp
    Filesize

    44KB

  • memory/1740-409-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1740-410-0x00000000728FD000-0x0000000072908000-memory.dmp
    Filesize

    44KB

  • memory/1908-220-0x0000000000000000-mapping.dmp