Analysis

  • max time kernel
    103s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    29-11-2022 14:54

General

  • Target

    fd50abee72331bfc46bce92f21e983ffdfc05f2da36bea070f08eb18c195af58.xls

  • Size

    97KB

  • MD5

    0255448066f74dc0fb8698cd37d35240

  • SHA1

    3c68b0dfd5bdaf18beeff94c187c73b17e7edbaf

  • SHA256

    fd50abee72331bfc46bce92f21e983ffdfc05f2da36bea070f08eb18c195af58

  • SHA512

    d78b94e4a1b614d4ef367357078c12ef9023dc79a3307f36df50ad59bb76174c62a2489d763099c5c6f22b4febe7dad3b12dac936751ca4abf4f9d975e762dab

  • SSDEEP

    1536:RSSSWXAZYGnvWVbrzQ7yMbwTkR62ldM88SRJtXwRWM2M/MMkx:pUWVbrzQ7iTk9sjMJtXwj5kpx

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 5 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\fd50abee72331bfc46bce92f21e983ffdfc05f2da36bea070f08eb18c195af58.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:1076
    • 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:2040
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1544
    • 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:860
    • 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:1108

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/860-220-0x0000000000000000-mapping.dmp
  • memory/1076-73-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-62-0x0000000000786000-0x000000000078C000-memory.dmp
    Filesize

    24KB

  • memory/1076-77-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-58-0x0000000076AE1000-0x0000000076AE3000-memory.dmp
    Filesize

    8KB

  • memory/1076-59-0x0000000000786000-0x000000000078C000-memory.dmp
    Filesize

    24KB

  • memory/1076-61-0x0000000000786000-0x000000000078C000-memory.dmp
    Filesize

    24KB

  • memory/1076-60-0x0000000000786000-0x000000000078C000-memory.dmp
    Filesize

    24KB

  • memory/1076-76-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-64-0x0000000000786000-0x000000000078C000-memory.dmp
    Filesize

    24KB

  • memory/1076-63-0x0000000000786000-0x000000000078C000-memory.dmp
    Filesize

    24KB

  • memory/1076-69-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-70-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-75-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-67-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-66-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-65-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-71-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-72-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-74-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-54-0x000000002F9B1000-0x000000002F9B4000-memory.dmp
    Filesize

    12KB

  • memory/1076-68-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1076-57-0x0000000072A8D000-0x0000000072A98000-memory.dmp
    Filesize

    44KB

  • memory/1076-78-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-79-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-80-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-82-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-81-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-84-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-83-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-85-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-86-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-109-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-87-0x000000000078C000-0x0000000000790000-memory.dmp
    Filesize

    16KB

  • memory/1076-387-0x0000000072A8D000-0x0000000072A98000-memory.dmp
    Filesize

    44KB

  • memory/1076-385-0x000000000078C000-0x000000000078E000-memory.dmp
    Filesize

    8KB

  • memory/1076-55-0x0000000071AA1000-0x0000000071AA3000-memory.dmp
    Filesize

    8KB

  • memory/1076-384-0x000000000078C000-0x000000000078E000-memory.dmp
    Filesize

    8KB

  • memory/1076-223-0x000000000078C000-0x000000000078E000-memory.dmp
    Filesize

    8KB

  • memory/1108-221-0x0000000000000000-mapping.dmp
  • memory/1544-222-0x0000000000000000-mapping.dmp
  • memory/2040-219-0x0000000000000000-mapping.dmp