Analysis

  • max time kernel
    107s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29-11-2022 14:41

General

  • Target

    af79db274dfa6b863c9dfb2d798b71547086db2a8e3d014801212566ad6261de.xls

  • Size

    98KB

  • MD5

    d46ad631dde78a1a5b6df7683b35e868

  • SHA1

    9c6e1628913a916264ab716684c73e096c325b3c

  • SHA256

    af79db274dfa6b863c9dfb2d798b71547086db2a8e3d014801212566ad6261de

  • SHA512

    1839c7d2bc60ed00f084a529676e222b022c98795e1c5975889f670af01f7fb051011a3e9f56853b927779287f3df7c8b63bc8a4e48a7a549c02d481a63031ff

  • SSDEEP

    1536:qgAF2CAeRl86DWVbsSzxnIzQ7ITkR62l+IhY7nJdJoOd7XJtXwRtM2M/M4lk:pCAeRlVWVbTIzQ7ITk9x2bJtXwE5kgk

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\af79db274dfa6b863c9dfb2d798b71547086db2a8e3d014801212566ad6261de.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:2028
    • 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:904
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1208
    • 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:584
    • 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:1412

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/584-214-0x0000000000000000-mapping.dmp
  • memory/904-213-0x0000000000000000-mapping.dmp
  • memory/1208-216-0x0000000000000000-mapping.dmp
  • memory/1412-215-0x0000000000000000-mapping.dmp
  • memory/2028-70-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-67-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-79-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-80-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-78-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-77-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-76-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-75-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-74-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-73-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-72-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-71-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-54-0x000000002FF21000-0x000000002FF24000-memory.dmp
    Filesize

    12KB

  • memory/2028-69-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-68-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-66-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-65-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-64-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-63-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-62-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-61-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-60-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-59-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-81-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-103-0x00000000006E5000-0x00000000006E9000-memory.dmp
    Filesize

    16KB

  • memory/2028-58-0x0000000075811000-0x0000000075813000-memory.dmp
    Filesize

    8KB

  • memory/2028-57-0x0000000071F6D000-0x0000000071F78000-memory.dmp
    Filesize

    44KB

  • memory/2028-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/2028-55-0x0000000070F81000-0x0000000070F83000-memory.dmp
    Filesize

    8KB

  • memory/2028-371-0x00000000006E5000-0x00000000006E7000-memory.dmp
    Filesize

    8KB

  • memory/2028-373-0x0000000071F6D000-0x0000000071F78000-memory.dmp
    Filesize

    44KB