Analysis

  • max time kernel
    151s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 18:23

General

  • Target

    15̼޹˾Ȫݷֹ˾/̱.xls

  • Size

    110KB

  • MD5

    eda1ec628124856513d3c3ffa9fb4656

  • SHA1

    a9ada096433ce2985f5140781dc2028defa8a194

  • SHA256

    e7b3dc18446c856dbdcac8ac144a58d2c6096e1679cc34100d99b515715669bb

  • SHA512

    2f5067868dd8325b36ba15ea5d1a113094241b13a188fa384469a25a4c8451aa98c97549d98268a01b10a57c2a031432380d7f317f42972779f255cefde82f2c

  • SSDEEP

    3072:241gxv7yZmspH7+cclKisUI4ukoRWGNeWVbrzjW7ITkPkn3Vip7ehJtXwBMgI:v1gxv7yZmspH7+cclKisUI4ukoRWGNZX

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 3 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\15̼޹˾Ȫݷֹ˾\̱.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:1628
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1344
      • 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:2036
        • C:\Windows\SysWOW64\attrib.exe
          attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
          3⤵
          • Views/modifies file attributes
          PID:572
      • 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:376
      • 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:1528

    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/376-222-0x0000000000000000-mapping.dmp
    • memory/572-224-0x0000000000000000-mapping.dmp
    • memory/1344-59-0x0000000000000000-mapping.dmp
    • memory/1344-60-0x000007FEFB591000-0x000007FEFB593000-memory.dmp
      Filesize

      8KB

    • memory/1528-223-0x0000000000000000-mapping.dmp
    • memory/1628-54-0x000000002F951000-0x000000002F954000-memory.dmp
      Filesize

      12KB

    • memory/1628-55-0x0000000070D81000-0x0000000070D83000-memory.dmp
      Filesize

      8KB

    • memory/1628-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1628-57-0x0000000071D6D000-0x0000000071D78000-memory.dmp
      Filesize

      44KB

    • memory/1628-58-0x0000000074AD1000-0x0000000074AD3000-memory.dmp
      Filesize

      8KB

    • memory/1628-385-0x0000000071D6D000-0x0000000071D78000-memory.dmp
      Filesize

      44KB

    • memory/2036-221-0x0000000000000000-mapping.dmp