Analysis

  • max time kernel
    159s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    03-12-2022 12:42

General

  • Target

    ca9c9a78c5dc10b798c6a71b6ccee06a9c83c3d9d44bd540b31a2b356b51932d.xls

  • Size

    95KB

  • MD5

    7b7a940d709c0a326c17f36ec1cddd72

  • SHA1

    51e998c83b9a86227aa136ba17ad161a33dc8988

  • SHA256

    ca9c9a78c5dc10b798c6a71b6ccee06a9c83c3d9d44bd540b31a2b356b51932d

  • SHA512

    3c1906460aa8f4e6a3842d03572a976f209e10f923cef7f65551af61b4953930cbe59885060c804b4faa3b96ea62bbc0a78ab719d917d573104c3c1836cccfc7

  • SSDEEP

    1536:rqqqeCLnm/SXq5bpDL2jcc0lbxOvTgZRg88ScJtXwU1NZ:z2jcc0lbxOrbjhJtXw8NZ

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 4 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 20 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\ca9c9a78c5dc10b798c6a71b6ccee06a9c83c3d9d44bd540b31a2b356b51932d.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:1452
    • 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:1016
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1980
    • 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:1668
    • 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:1588
    • C:\Windows\SysWOW64\wscript.exe
      "C:\Windows\System32\wscript.exe" E:\KK\ca9c9a78c5dc10b798c6a71b6ccee06a9c83c3d9d44bd540b31a2b356b51932d_Search.vbs
      2⤵
      • Process spawned unexpected child process
      PID:684

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/684-312-0x0000000000000000-mapping.dmp
  • memory/1016-219-0x0000000000000000-mapping.dmp
  • memory/1452-223-0x000000007295D000-0x0000000072968000-memory.dmp
    Filesize

    44KB

  • memory/1452-57-0x0000000075BA1000-0x0000000075BA3000-memory.dmp
    Filesize

    8KB

  • memory/1452-58-0x000000007295D000-0x0000000072968000-memory.dmp
    Filesize

    44KB

  • memory/1452-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1452-54-0x000000002F131000-0x000000002F134000-memory.dmp
    Filesize

    12KB

  • memory/1452-55-0x0000000071971000-0x0000000071973000-memory.dmp
    Filesize

    8KB

  • memory/1452-429-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1452-430-0x000000007295D000-0x0000000072968000-memory.dmp
    Filesize

    44KB

  • memory/1588-221-0x0000000000000000-mapping.dmp
  • memory/1668-220-0x0000000000000000-mapping.dmp
  • memory/1980-222-0x0000000000000000-mapping.dmp