Analysis

  • max time kernel
    146s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    09-05-2022 21:29

General

  • Target

    Cancellation-1209065499$-May5.xlsb

  • Size

    65KB

  • MD5

    35c57b549478f7ab03f9d212069d8566

  • SHA1

    e2f79848af012270c33a686ed4fb16a906e3cd66

  • SHA256

    068c3649694a07a03ecb131b889b98d5ecc2f1f35bfd11456a7a0f9e635c6182

  • SHA512

    2ec2a6c2c080f45f141d91688f3d4af0aa08af4c2dcff2845bbb405f8a0e47c6cf01856eef9f0d411d7dc12bbc00e386fa4c005504904d42ca786ed36cf3b7a4

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source

Signatures

  • Process spawned unexpected child process 4 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 28 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\Cancellation-1209065499$-May5.xlsb
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1932
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 /s calc
      2⤵
      • Process spawned unexpected child process
      PID:1424
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 C:\Merto\Byrost\Veonse.OOOCCCXXX
      2⤵
      • Process spawned unexpected child process
      PID:1164
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 C:\Merto\Byrost\Veonsea.OOOCCCXXX
      2⤵
      • Process spawned unexpected child process
      PID:1552
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 C:\Merto\Byrost\Veonseb.OOOCCCXXX
      2⤵
      • Process spawned unexpected child process
      PID:984

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/984-65-0x0000000000000000-mapping.dmp
  • memory/1164-61-0x0000000000000000-mapping.dmp
  • memory/1424-59-0x0000000000000000-mapping.dmp
  • memory/1552-63-0x0000000000000000-mapping.dmp
  • memory/1932-54-0x000000002F941000-0x000000002F944000-memory.dmp
    Filesize

    12KB

  • memory/1932-55-0x0000000070DA1000-0x0000000070DA3000-memory.dmp
    Filesize

    8KB

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

    64KB

  • memory/1932-57-0x0000000071D8D000-0x0000000071D98000-memory.dmp
    Filesize

    44KB

  • memory/1932-58-0x00000000757C1000-0x00000000757C3000-memory.dmp
    Filesize

    8KB