Analysis

  • max time kernel
    124s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 12:06

General

  • Target

    28435fb83ae88f435c994112e243ab837f3bcfc579b1e9d43fb96c2f1ed45342.xls

  • Size

    99KB

  • MD5

    1a3da27adce767ae78e54b2acdcb08e9

  • SHA1

    9c469315fddac7ef1c9cceedee26587c008fd48d

  • SHA256

    28435fb83ae88f435c994112e243ab837f3bcfc579b1e9d43fb96c2f1ed45342

  • SHA512

    85bfd35fabf40b9725cbc1695dfbd2fb6ea80a59dacb6cf839a8ccf98dfc8ccb8a1143e5f9f595428e871cc186e1a5c93858256f121a50e5e32e0b7c109b7c5c

  • SSDEEP

    3072:IEl6Nc7yRzs1H75wkZUgsQ6NqTBun5o42jcc0lbxOrNj4X1qiN:Vl6Nc7yRzs1H75wkZUgsQ6NqTBun5oW1

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\28435fb83ae88f435c994112e243ab837f3bcfc579b1e9d43fb96c2f1ed45342.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:1932
    • 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:1456
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1432
    • 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:1696
    • 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:1824

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/1432-222-0x0000000000000000-mapping.dmp
  • memory/1456-219-0x0000000000000000-mapping.dmp
  • memory/1696-220-0x0000000000000000-mapping.dmp
  • memory/1824-221-0x0000000000000000-mapping.dmp
  • memory/1932-74-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-383-0x0000000072BFD000-0x0000000072C08000-memory.dmp
    Filesize

    44KB

  • memory/1932-59-0x0000000000526000-0x000000000052C000-memory.dmp
    Filesize

    24KB

  • memory/1932-72-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-85-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-86-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-84-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-83-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-82-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-81-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-80-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-79-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-78-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-77-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-76-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-75-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-54-0x000000002F5D1000-0x000000002F5D4000-memory.dmp
    Filesize

    12KB

  • memory/1932-73-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-61-0x0000000000526000-0x000000000052C000-memory.dmp
    Filesize

    24KB

  • memory/1932-60-0x0000000000526000-0x000000000052C000-memory.dmp
    Filesize

    24KB

  • memory/1932-69-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-70-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-68-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-67-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-66-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-65-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-64-0x0000000000526000-0x000000000052C000-memory.dmp
    Filesize

    24KB

  • memory/1932-62-0x0000000000526000-0x000000000052C000-memory.dmp
    Filesize

    24KB

  • memory/1932-63-0x0000000000526000-0x000000000052C000-memory.dmp
    Filesize

    24KB

  • memory/1932-87-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-109-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-58-0x0000000076401000-0x0000000076403000-memory.dmp
    Filesize

    8KB

  • memory/1932-57-0x0000000072BFD000-0x0000000072C08000-memory.dmp
    Filesize

    44KB

  • memory/1932-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1932-55-0x0000000071C11000-0x0000000071C13000-memory.dmp
    Filesize

    8KB

  • memory/1932-71-0x000000000052C000-0x0000000000530000-memory.dmp
    Filesize

    16KB

  • memory/1932-385-0x0000000072BFD000-0x0000000072C08000-memory.dmp
    Filesize

    44KB