Analysis

  • max time kernel
    110s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    22-11-2022 22:00

General

  • Target

    a21ea9adb97fe5701d6e7f66bf34e942355038edfb46b499805238543274c627.xls

  • Size

    116KB

  • MD5

    df1045b91341f9edd742318a27e16ec3

  • SHA1

    6b3dc1972bc1e1451d3a5073ec8af461e011e766

  • SHA256

    a21ea9adb97fe5701d6e7f66bf34e942355038edfb46b499805238543274c627

  • SHA512

    6662905300db23a7c28db58c1e7b0183d496426ef0627e562578c795ea3f46d96c3c3c09c7e04d353de31f40453847f5d88f3a6e5a7d9a31486a40ac793c368c

  • SSDEEP

    1536:8kkkI8iEh1tQGxWicdkmeXDXZ95sALLIY0oOTgWvbrzQ744TkR62bRgeOEgScJtb:lfWvbrzQ7PTk9SBJtXwX2

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\a21ea9adb97fe5701d6e7f66bf34e942355038edfb46b499805238543274c627.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:1960
    • 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:1924
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1596
    • 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:1212
    • 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:304

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/304-221-0x0000000000000000-mapping.dmp
  • memory/1212-220-0x0000000000000000-mapping.dmp
  • memory/1596-222-0x0000000000000000-mapping.dmp
  • memory/1924-219-0x0000000000000000-mapping.dmp
  • memory/1960-54-0x000000002F221000-0x000000002F224000-memory.dmp
    Filesize

    12KB

  • memory/1960-55-0x0000000071071000-0x0000000071073000-memory.dmp
    Filesize

    8KB

  • memory/1960-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1960-57-0x000000007205D000-0x0000000072068000-memory.dmp
    Filesize

    44KB

  • memory/1960-58-0x0000000075D01000-0x0000000075D03000-memory.dmp
    Filesize

    8KB

  • memory/1960-223-0x000000007205D000-0x0000000072068000-memory.dmp
    Filesize

    44KB

  • memory/1960-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1960-385-0x000000007205D000-0x0000000072068000-memory.dmp
    Filesize

    44KB