Analysis

  • max time kernel
    119s
  • max time network
    42s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 19:20

General

  • Target

    a1bf1157d9a6a3b98da4aa678a85ab31ef5c29ea0ee708dd8ded86d41c3e8430.xls

  • Size

    90KB

  • MD5

    50c67f1f59e912b12ce0715bc6a05a88

  • SHA1

    6f98084fce105bd661345c244cd4c3d0e24bb5af

  • SHA256

    a1bf1157d9a6a3b98da4aa678a85ab31ef5c29ea0ee708dd8ded86d41c3e8430

  • SHA512

    e5d79e6b53ab7df690c846699706328098e6bfba6e31f23b62300b3a4e24d939b949f37ce5303b3cf2e03659b3803b911886e37fe5ea1776b37ac63887965cc8

  • SSDEEP

    1536:dBuuuO6HmVnLziCdymRxoiKTMEGw1gxv7yZmspH7+cclKiEZClsQ6NqTBun5oBNS:djw1gxv7yZmspH7+cclKisQ6NqTBun59

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\a1bf1157d9a6a3b98da4aa678a85ab31ef5c29ea0ee708dd8ded86d41c3e8430.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:1708
    • 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:1280
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:2024
    • 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:1772
    • 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

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/1280-213-0x0000000000000000-mapping.dmp
  • memory/1328-215-0x0000000000000000-mapping.dmp
  • memory/1708-74-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-60-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-58-0x0000000075451000-0x0000000075453000-memory.dmp
    Filesize

    8KB

  • memory/1708-73-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-59-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-71-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-64-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-63-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-66-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-65-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-61-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-70-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-69-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-68-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-67-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-72-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-373-0x0000000000889000-0x000000000088B000-memory.dmp
    Filesize

    8KB

  • memory/1708-57-0x000000007246D000-0x0000000072478000-memory.dmp
    Filesize

    44KB

  • memory/1708-62-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-81-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-80-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-79-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-78-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-77-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-76-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-75-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-103-0x000000000088A000-0x000000000088D000-memory.dmp
    Filesize

    12KB

  • memory/1708-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1708-375-0x000000007246D000-0x0000000072478000-memory.dmp
    Filesize

    44KB

  • memory/1708-55-0x0000000071481000-0x0000000071483000-memory.dmp
    Filesize

    8KB

  • memory/1708-54-0x000000002F671000-0x000000002F674000-memory.dmp
    Filesize

    12KB

  • memory/1708-217-0x0000000000889000-0x000000000088B000-memory.dmp
    Filesize

    8KB

  • memory/1708-306-0x000000007246D000-0x0000000072478000-memory.dmp
    Filesize

    44KB

  • memory/1772-214-0x0000000000000000-mapping.dmp
  • memory/2024-216-0x0000000000000000-mapping.dmp