Analysis

  • max time kernel
    100s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    18-09-2022 22:26

General

  • Target

    55c3d6b8f1326bfd9bc2323e262f92fbdc49b3c5e8c05c425cb5332e90a4b3d8.xls

  • Size

    114KB

  • MD5

    55ce096a07e4a5631ba7c7c1e092449f

  • SHA1

    b1d35fa94346efa1ada8587333a3768ccf71cf19

  • SHA256

    55c3d6b8f1326bfd9bc2323e262f92fbdc49b3c5e8c05c425cb5332e90a4b3d8

  • SHA512

    601500e12a172c626899065b07a9007457c526e7aa36a5b9aa17e1446ec25051ce592d0e7f5e7f876f7a9a167d1d917a04f7ec70fa4b460ab37cf8fd9370001a

  • SSDEEP

    3072:GrmMafpIWVbrzQ7ITk9i/MJtXwI5kDdR:Naw

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 4 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\55c3d6b8f1326bfd9bc2323e262f92fbdc49b3c5e8c05c425cb5332e90a4b3d8.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:1340
    • 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:836
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1300
    • 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:1128
    • 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:700

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/700-221-0x0000000000000000-mapping.dmp

  • memory/836-219-0x0000000000000000-mapping.dmp

  • memory/1128-220-0x0000000000000000-mapping.dmp

  • memory/1300-222-0x0000000000000000-mapping.dmp

  • memory/1340-54-0x000000002F551000-0x000000002F554000-memory.dmp

    Filesize

    12KB

  • memory/1340-55-0x0000000070F31000-0x0000000070F33000-memory.dmp

    Filesize

    8KB

  • memory/1340-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1340-57-0x0000000071F1D000-0x0000000071F28000-memory.dmp

    Filesize

    44KB

  • memory/1340-58-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

    Filesize

    8KB

  • memory/1340-383-0x0000000071F1D000-0x0000000071F28000-memory.dmp

    Filesize

    44KB

  • memory/1340-384-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1340-385-0x0000000071F1D000-0x0000000071F28000-memory.dmp

    Filesize

    44KB