Analysis

  • max time kernel
    106s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2022 12:44

General

  • Target

    c9e02a13c751feb90b7a4e74a4cb0e80e27a3a6d15e73721e330d0334935c00f.xls

  • Size

    89KB

  • MD5

    4377bcc4db1987bd7d62b4d53f4ac549

  • SHA1

    9436997f7d278b4095b61128efc48d4476b5e6a1

  • SHA256

    c9e02a13c751feb90b7a4e74a4cb0e80e27a3a6d15e73721e330d0334935c00f

  • SHA512

    7a627322f21b2f8fdc831992be7fb5c0d07b683b3fd70d0176e7e8357810e0a2d2d6aa5866900c481f0a48d6db3ce29afe8a79aabbf7263d2fcaa20d8ad9c019

  • SSDEEP

    1536:TeeeqeLz2lXbjSytC2BhYS6D8sAXwMX1gxv7yZmspH7+cclKiEZClsPI4ukoRWGB:dX1gxv7yZmspH7+cclKisPI4ukoRWGND

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 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\c9e02a13c751feb90b7a4e74a4cb0e80e27a3a6d15e73721e330d0334935c00f.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:1900
    • 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:268
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1812
    • 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:1148
    • 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:1532

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/268-219-0x0000000000000000-mapping.dmp
  • memory/1148-220-0x0000000000000000-mapping.dmp
  • memory/1532-221-0x0000000000000000-mapping.dmp
  • memory/1812-222-0x0000000000000000-mapping.dmp
  • memory/1900-58-0x00000000759F1000-0x00000000759F3000-memory.dmp
    Filesize

    8KB

  • memory/1900-275-0x0000000005620000-0x0000000005720000-memory.dmp
    Filesize

    1024KB

  • memory/1900-57-0x00000000726BD000-0x00000000726C8000-memory.dmp
    Filesize

    44KB

  • memory/1900-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1900-55-0x00000000716D1000-0x00000000716D3000-memory.dmp
    Filesize

    8KB

  • memory/1900-270-0x0000000005620000-0x0000000005720000-memory.dmp
    Filesize

    1024KB

  • memory/1900-272-0x0000000005620000-0x0000000005720000-memory.dmp
    Filesize

    1024KB

  • memory/1900-54-0x000000002FD71000-0x000000002FD74000-memory.dmp
    Filesize

    12KB

  • memory/1900-386-0x0000000005620000-0x0000000005720000-memory.dmp
    Filesize

    1024KB

  • memory/1900-387-0x00000000726BD000-0x00000000726C8000-memory.dmp
    Filesize

    44KB

  • memory/1900-388-0x0000000005620000-0x0000000005720000-memory.dmp
    Filesize

    1024KB

  • memory/1900-389-0x0000000005620000-0x0000000005720000-memory.dmp
    Filesize

    1024KB

  • memory/1900-390-0x0000000005620000-0x0000000005720000-memory.dmp
    Filesize

    1024KB

  • memory/1900-391-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1900-392-0x00000000726BD000-0x00000000726C8000-memory.dmp
    Filesize

    44KB