Analysis

  • max time kernel
    113s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    02-12-2022 15:34

General

  • Target

    442b24a6eab91d5ba3c3322290f1c22ee293f862dafafd452f935e08738d08ca.xls

  • Size

    198KB

  • MD5

    d46b90323f7c40b677637cc7c4b217d1

  • SHA1

    c5af5be7767295426cc59fc6fedcd8b9063a4447

  • SHA256

    442b24a6eab91d5ba3c3322290f1c22ee293f862dafafd452f935e08738d08ca

  • SHA512

    892f870d6a81048ff632bed59c37ce30e0f99a4c6823ec7deb3afd84b514c86ca7ed99df448c2650fe97a69409f414d4e0ebf4a87fc967bc1d1ca13649336dca

  • SSDEEP

    3072:OvsVwo9W5QA4QP5ow3fVI2u50XxGhFwNLzEpWVbr4GQ7ITkDchIPaM5krB:cVL5eQP5ow3fCZ50BsFnJmy

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\442b24a6eab91d5ba3c3322290f1c22ee293f862dafafd452f935e08738d08ca.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:1584
    • 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:1336
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:928
    • 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:1832
    • 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:916

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/916-215-0x0000000000000000-mapping.dmp
  • memory/928-216-0x0000000000000000-mapping.dmp
  • memory/1336-213-0x0000000000000000-mapping.dmp
  • memory/1584-73-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-372-0x00000000722CD000-0x00000000722D8000-memory.dmp
    Filesize

    44KB

  • memory/1584-72-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-60-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-59-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-62-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-80-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-79-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-78-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-77-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-76-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-75-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-74-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-54-0x000000002F9C1000-0x000000002F9C4000-memory.dmp
    Filesize

    12KB

  • memory/1584-61-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-70-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-58-0x0000000075611000-0x0000000075613000-memory.dmp
    Filesize

    8KB

  • memory/1584-69-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-68-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-67-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-66-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-65-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-64-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-63-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-81-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-103-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-57-0x00000000722CD000-0x00000000722D8000-memory.dmp
    Filesize

    44KB

  • memory/1584-71-0x000000000068B000-0x000000000068E000-memory.dmp
    Filesize

    12KB

  • memory/1584-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1584-55-0x00000000712E1000-0x00000000712E3000-memory.dmp
    Filesize

    8KB

  • memory/1832-214-0x0000000000000000-mapping.dmp