Analysis

  • max time kernel
    106s
  • max time network
    42s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    30-11-2022 01:23

General

  • Target

    81e2fd451ff6ced73b60b65e112ee0df0908a623af5c6619fa4bd0095e0fe304.xls

  • Size

    108KB

  • MD5

    876f3b0340bef12065ccf17e1fbbcdb0

  • SHA1

    8c0fe05d69c55dfae12240383b7025e598d34d5c

  • SHA256

    81e2fd451ff6ced73b60b65e112ee0df0908a623af5c6619fa4bd0095e0fe304

  • SHA512

    409700075ebb6660755b12857832fc0e1cdf65c36dec847ee03aeee326dcee07130f3f003215f0aa039e3eb18d0167caf415e5b561f3c5b409a904a80ba9e76d

  • SSDEEP

    3072:Dul6Nc7yRzs1H75wkZUb2rMKyWmrAETNLWVbLIbgzQ7ITkcpcJtXwHekLJ:6l6Nc7yRzs1H75wkZUb2rMKyWmrAETNF

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\81e2fd451ff6ced73b60b65e112ee0df0908a623af5c6619fa4bd0095e0fe304.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:1992
    • 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:1224
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1736
    • 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:1288
    • 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:1792

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/1224-213-0x0000000000000000-mapping.dmp
  • memory/1288-214-0x0000000000000000-mapping.dmp
  • memory/1736-216-0x0000000000000000-mapping.dmp
  • memory/1792-215-0x0000000000000000-mapping.dmp
  • memory/1992-70-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-72-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-60-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-61-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-62-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-63-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-64-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-65-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-66-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-67-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-68-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-69-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-54-0x000000002F041000-0x000000002F044000-memory.dmp
    Filesize

    12KB

  • memory/1992-71-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-73-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-59-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-74-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-75-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-76-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-77-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-78-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-79-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-80-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-81-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-103-0x000000000081B000-0x000000000081E000-memory.dmp
    Filesize

    12KB

  • memory/1992-58-0x0000000076141000-0x0000000076143000-memory.dmp
    Filesize

    8KB

  • memory/1992-57-0x000000007270D000-0x0000000072718000-memory.dmp
    Filesize

    44KB

  • memory/1992-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1992-55-0x0000000071721000-0x0000000071723000-memory.dmp
    Filesize

    8KB

  • memory/1992-393-0x000000007270D000-0x0000000072718000-memory.dmp
    Filesize

    44KB

  • memory/1992-395-0x000000007270D000-0x0000000072718000-memory.dmp
    Filesize

    44KB