Analysis

  • max time kernel
    137s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 19:26

General

  • Target

    Ҵֱ20%ϵ//ֱͶӰ��.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\Ҵֱ20%ϵ\\ֱͶӰ��.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:1972
    • 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:584
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1836
    • 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:472
    • 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:1268

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/472-220-0x0000000000000000-mapping.dmp
  • memory/584-219-0x0000000000000000-mapping.dmp
  • memory/1268-221-0x0000000000000000-mapping.dmp
  • memory/1836-222-0x0000000000000000-mapping.dmp
  • memory/1972-73-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-117-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-60-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-61-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-62-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-64-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-63-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-67-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-66-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-65-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-70-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-71-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-69-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-77-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-74-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-75-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-54-0x000000002F3B1000-0x000000002F3B4000-memory.dmp
    Filesize

    12KB

  • memory/1972-72-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-55-0x0000000071431000-0x0000000071433000-memory.dmp
    Filesize

    8KB

  • memory/1972-59-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-68-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-76-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-82-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-83-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-81-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-80-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-86-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-85-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-84-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-87-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-93-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-109-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-112-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-79-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-58-0x0000000075931000-0x0000000075933000-memory.dmp
    Filesize

    8KB

  • memory/1972-57-0x000000007241D000-0x0000000072428000-memory.dmp
    Filesize

    44KB

  • memory/1972-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1972-78-0x0000000000556000-0x000000000055E000-memory.dmp
    Filesize

    32KB

  • memory/1972-384-0x000000007241D000-0x0000000072428000-memory.dmp
    Filesize

    44KB