Analysis

  • max time kernel
    104s
  • max time network
    90s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    27-11-2022 02:55

General

  • Target

    1046a3fbb527397aef702f47b6b3e68f8aa96f339669f262f54334b42ae446a4.xls

  • Size

    196KB

  • MD5

    e8c446c31ed0efa3c0543f22b99e57fe

  • SHA1

    66db1596ad98d6e20cada192b1c3e853b60d654a

  • SHA256

    1046a3fbb527397aef702f47b6b3e68f8aa96f339669f262f54334b42ae446a4

  • SHA512

    b98cfaa4d9b5992765091986f0c806ff34891ffb6034e9c7ea5a75ea3ea0dc423d5c7b5e6bf6bd7f32dbe1702dff2d514204553e44f9d63f3efcee7addf918c4

  • SSDEEP

    3072:PvmSN6UIpcmfl7+QHPrVf5Hxvdx8H3WVbrzQ7ITktLjhJtXw0e:nm4rIEYf5Hxvdx8HZ

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\1046a3fbb527397aef702f47b6b3e68f8aa96f339669f262f54334b42ae446a4.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:1720
    • 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:340
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1284
    • 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:1172
    • 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:1048

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/340-219-0x0000000000000000-mapping.dmp
  • memory/1048-221-0x0000000000000000-mapping.dmp
  • memory/1172-220-0x0000000000000000-mapping.dmp
  • memory/1284-222-0x0000000000000000-mapping.dmp
  • memory/1720-54-0x000000002F231000-0x000000002F234000-memory.dmp
    Filesize

    12KB

  • memory/1720-55-0x0000000071141000-0x0000000071143000-memory.dmp
    Filesize

    8KB

  • memory/1720-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1720-57-0x000000007212D000-0x0000000072138000-memory.dmp
    Filesize

    44KB

  • memory/1720-58-0x0000000074F01000-0x0000000074F03000-memory.dmp
    Filesize

    8KB

  • memory/1720-223-0x000000007212D000-0x0000000072138000-memory.dmp
    Filesize

    44KB

  • memory/1720-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1720-385-0x000000007212D000-0x0000000072138000-memory.dmp
    Filesize

    44KB