Analysis

  • max time kernel
    102s
  • max time network
    35s
  • 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

    44053bde216b1c142d9f9c9904d9ea0a14ddac66f943370014169140e1bdfaaf.xls

  • Size

    115KB

  • MD5

    a64cf3715f0e2ca7fd6c0ba16df8627a

  • SHA1

    19ba21c51556d99086a9e2922f3d4f91ab245933

  • SHA256

    44053bde216b1c142d9f9c9904d9ea0a14ddac66f943370014169140e1bdfaaf

  • SHA512

    d559d70313fad464e7208a7f0338a0c3709e49403302bfdbd56b9cc40e57c7fa8cc0542afea7ab6d86192b63f7884be6cf4af33ca8b3d8210e583143d5323327

  • SSDEEP

    3072:VRl6Nc7yRzs1H75wkZUgsQ6NqTBun5opLWH2jcc0lbxOIaMSPR:Dl6Nc7yRzs1H75wkZUgsQ6NqTBun5oA8

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\44053bde216b1c142d9f9c9904d9ea0a14ddac66f943370014169140e1bdfaaf.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:1356
    • 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:772
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:544
    • 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:916
    • 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:1976

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/544-222-0x0000000000000000-mapping.dmp
  • memory/772-219-0x0000000000000000-mapping.dmp
  • memory/916-220-0x0000000000000000-mapping.dmp
  • memory/1356-76-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-55-0x0000000071331000-0x0000000071333000-memory.dmp
    Filesize

    8KB

  • memory/1356-59-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-60-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-61-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-62-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-63-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-64-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-77-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-65-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-67-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-70-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-71-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-69-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-68-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-73-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-72-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-54-0x000000002FE61000-0x000000002FE64000-memory.dmp
    Filesize

    12KB

  • memory/1356-66-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-58-0x00000000760A1000-0x00000000760A3000-memory.dmp
    Filesize

    8KB

  • memory/1356-82-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-79-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-78-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-80-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-81-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-74-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-85-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-83-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-84-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-86-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-89-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-87-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-109-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1356-57-0x000000007231D000-0x0000000072328000-memory.dmp
    Filesize

    44KB

  • memory/1356-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1356-384-0x000000007231D000-0x0000000072328000-memory.dmp
    Filesize

    44KB

  • memory/1356-75-0x00000000006B7000-0x00000000006BA000-memory.dmp
    Filesize

    12KB

  • memory/1976-221-0x0000000000000000-mapping.dmp