Analysis

  • max time kernel
    111s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    26-11-2022 03:09

General

  • Target

    43d4bb7a5498ca535c4ae3daedf83858812b87bae3ad8e63fd616170f53fda4c.xls

  • Size

    133KB

  • MD5

    5dc23c1bb522f648a3378927810144f9

  • SHA1

    63bc0c9254d171c58112b1ddc68ada977adc4492

  • SHA256

    43d4bb7a5498ca535c4ae3daedf83858812b87bae3ad8e63fd616170f53fda4c

  • SHA512

    5d7e7d733799d3df9bb142ae490d9a2be73eb332293ec7dbbd405b7b5d105a3cd8095e1c290aea83ca5557895339a28b51b4177dd6ea05d811b22ce8812ab42f

  • SSDEEP

    1536:NpbrbuT5D8JJJ2ARaTraw83iU2jcc0lbxOvTgZ80I/cJtXwPvS:uAN2jcc0lbxOrwIEJtXwnS

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\43d4bb7a5498ca535c4ae3daedf83858812b87bae3ad8e63fd616170f53fda4c.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:1020
    • 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:812
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:432
    • 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:1796
    • 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:1188

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/432-222-0x0000000000000000-mapping.dmp
  • memory/812-219-0x0000000000000000-mapping.dmp
  • memory/1020-78-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1020-58-0x00000000762D1000-0x00000000762D3000-memory.dmp
    Filesize

    8KB

  • memory/1020-60-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-59-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-61-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-62-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-63-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-64-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-65-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-86-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-85-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-84-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-76-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-82-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-81-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-80-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-79-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-223-0x000000007234D000-0x0000000072358000-memory.dmp
    Filesize

    44KB

  • memory/1020-57-0x000000007234D000-0x0000000072358000-memory.dmp
    Filesize

    44KB

  • memory/1020-83-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-75-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-74-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-73-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-72-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-71-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-70-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-69-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-68-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-67-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-66-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-87-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-109-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-77-0x0000000000840000-0x0000000000844000-memory.dmp
    Filesize

    16KB

  • memory/1020-385-0x000000007234D000-0x0000000072358000-memory.dmp
    Filesize

    44KB

  • memory/1020-54-0x000000002F5E1000-0x000000002F5E4000-memory.dmp
    Filesize

    12KB

  • memory/1020-55-0x0000000071361000-0x0000000071363000-memory.dmp
    Filesize

    8KB

  • memory/1188-221-0x0000000000000000-mapping.dmp
  • memory/1796-220-0x0000000000000000-mapping.dmp