Analysis

  • max time kernel
    103s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    01-03-2023 07:01

General

  • Target

    26f25ad7bc69fc6df7c99908f70f90f0.xls

  • Size

    124KB

  • MD5

    26f25ad7bc69fc6df7c99908f70f90f0

  • SHA1

    a083d8ef9b6ce48fe3aa8ac5b11d98f5fbc071db

  • SHA256

    36b4f9e7e9b86e737ea2f3d828d1109f7cd5b274791419ea287ca69ab6c8f620

  • SHA512

    d959c5c4e81fed1b3c3c83bb09cca53219ac4390558c3786913453cfd10476ca2c2edee61bcbd6f87048a3be1cec7fd02660e48ce41f703dd6587e03d61b2138

  • SSDEEP

    1536:E8888JRwNkYUu5oAeIMIX7Ltr4tDwv/ZeWJ8QobrzQ7ITkR62gbB8oCcJtXwyovO:/teWCzbrzQ7ITk96vRJtXw5v4/8vy

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\26f25ad7bc69fc6df7c99908f70f90f0.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:1244
    • 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:324
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1912
    • 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:1328
    • 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:1176

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/1244-54-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1244-61-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-62-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-63-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-64-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-65-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-67-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-69-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-70-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-71-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-72-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-73-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-75-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-76-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-74-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-77-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-78-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-80-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-81-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-79-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-68-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-82-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-66-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-83-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

  • memory/1244-105-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB