Analysis

  • max time kernel
    102s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    01-03-2023 07:03

General

  • Target

    2fbd449c497fdf48f6b859642f85eba9.xls

  • Size

    133KB

  • MD5

    2fbd449c497fdf48f6b859642f85eba9

  • SHA1

    bf7cc7ee4110c8ee94e163cb1a338efcd673d89c

  • SHA256

    642d234440d48fa06c5006513c9412c82c4ee84b440804397b565117c90a5f14

  • SHA512

    a257b289732b5011a4436d006db121721e5405aaf538a6ffa478bb65fb1ee369f17db3a334a5e684c9c506978b80d104eb528cbb91b2ddea08f993305b6f409c

  • SSDEEP

    3072:3k3hOdsylKlgryzc4bNhZFGzE+cL2knpRdXADglgAQ3NRKE83akk9KxyTyf:3k3hOdsylKlgryzc4bNhZF+E+W2knrdP

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 FindShellTrayWindow 2 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\2fbd449c497fdf48f6b859642f85eba9.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 FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1204
    • 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:1984
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1636
    • 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:1708
    • 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:296

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/1204-54-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1204-55-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-57-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-56-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-59-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-58-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-63-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-64-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-62-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-61-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-60-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-65-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-66-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-67-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-68-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-69-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-71-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-70-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-72-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-73-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-75-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-74-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-76-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-77-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-78-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-79-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-80-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-82-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-81-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-83-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-105-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-111-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB

  • memory/1204-115-0x0000000000770000-0x0000000000870000-memory.dmp
    Filesize

    1024KB