Analysis

  • max time kernel
    102s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    06-12-2022 17:20

General

  • Target

    81ed5759e423c3924f51b996b5864daf.xls

  • Size

    118KB

  • MD5

    81ed5759e423c3924f51b996b5864daf

  • SHA1

    54e6a8497e34564c94135719bb4fc9f11be08d6b

  • SHA256

    60d61a26c1314600dd0b2c7ac84815f75bb3f51af61724988a23114708929334

  • SHA512

    2b7292ca89ae93afdfd036b85aa5831b40923215c3cc4e18e26280adca019e2cdff5db2920f1282201de8a67d785738c325bfb68458ff9eb630f9447b5ad41eb

  • SSDEEP

    3072:mJk3hOd64vw/WbmfgkfjD/PkzSg413MU+J2jcc0lbxOG3BYJ7ANKxyT:0k3hOd64vw/WbmfgkfjD/P0SgE3MU+O

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 FindShellTrayWindow 2 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\81ed5759e423c3924f51b996b5864daf.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 FindShellTrayWindow
    • 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:1980
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:596
    • 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:1272
    • 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:1796

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/596-222-0x0000000000000000-mapping.dmp

  • memory/1272-220-0x0000000000000000-mapping.dmp

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

  • memory/1960-76-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-55-0x0000000071351000-0x0000000071353000-memory.dmp

    Filesize

    8KB

  • memory/1960-66-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-65-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-67-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-68-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-79-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-69-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-72-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-71-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-74-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-73-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-75-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-54-0x000000002FB21000-0x000000002FB24000-memory.dmp

    Filesize

    12KB

  • memory/1960-386-0x000000007233D000-0x0000000072348000-memory.dmp

    Filesize

    44KB

  • memory/1960-58-0x000000007233D000-0x0000000072348000-memory.dmp

    Filesize

    44KB

  • memory/1960-70-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-80-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-82-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-81-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-83-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-84-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-86-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-85-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-87-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-109-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-78-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-57-0x00000000751A1000-0x00000000751A3000-memory.dmp

    Filesize

    8KB

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

    Filesize

    64KB

  • memory/1960-77-0x0000000000437000-0x000000000043A000-memory.dmp

    Filesize

    12KB

  • memory/1960-223-0x000000007233D000-0x0000000072348000-memory.dmp

    Filesize

    44KB

  • memory/1980-219-0x0000000000000000-mapping.dmp