Analysis

  • max time kernel
    35s
  • max time network
    39s
  • platform
    windows10-1703_x64
  • resource
    win10-20220901-en
  • resource tags

    arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
  • submitted
    25-01-2023 11:02

General

  • Target

    Form.xls

  • Size

    91KB

  • MD5

    40b76012b8b6529ecf8351125ac25173

  • SHA1

    f9daf8fefcf0013c84a67fb0d1f8b6c9310d8165

  • SHA256

    e43a3e22c345838254d967e5523d858e4049018eaee4f1ab5bfc8467c62e17ab

  • SHA512

    c2dc3c35a809dd3d151660079cf2ba01fb2be917236dc2bc1c1134b9327cebd21e3195b6964f639e7e09975844e8a0cc3cb5e8e87481e92a11140bbf0ddf4061

  • SSDEEP

    1536:eKpb8rGYrMPe3q7Q0XV5xtezEsi8/dg4bCXuZH4gb4CEn9J4ZTrX:eKpb8rGYrMPe3q7Q0XV5xtezEsi8/dg8

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://www.vinyz.com/cache/rqWV/

xlm40.dropper

http://yuanliao.raluking.com/1eq5o7/gHrTM8YilZz0quKt/

xlm40.dropper

https://akarweb.net/cgi-bin/CL13tGXI/

xlm40.dropper

http://www.bdbg.es/css/DDm7o71vWtTs/

Signatures

  • Process spawned unexpected child process 4 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Form.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1532
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:3972
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:4720
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:4660
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:4596

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\elv2.ooocccxxx
    Filesize

    8KB

    MD5

    b30db89a08a31c8747a5a191cb449f71

    SHA1

    e2a46f963bd29b791a8fd45f06eba2681f02fd90

    SHA256

    2827c35c694336607536bc3439e4e28a5ead21722452dceebfde730f2a445e67

    SHA512

    0fd71e4f61c339cd9d2d803449e763562da525dbc75f55cbcdc85d15f5f032c95c22628e8d5bcd811b43522b44b2e0e29ace44023a1690ea3153345a9b1f2cd1

  • memory/1532-120-0x00007FFF48C50000-0x00007FFF48C60000-memory.dmp
    Filesize

    64KB

  • memory/1532-121-0x00007FFF48C50000-0x00007FFF48C60000-memory.dmp
    Filesize

    64KB

  • memory/1532-122-0x00007FFF48C50000-0x00007FFF48C60000-memory.dmp
    Filesize

    64KB

  • memory/1532-123-0x00007FFF48C50000-0x00007FFF48C60000-memory.dmp
    Filesize

    64KB

  • memory/1532-132-0x00007FFF45D20000-0x00007FFF45D30000-memory.dmp
    Filesize

    64KB

  • memory/1532-133-0x00007FFF45D20000-0x00007FFF45D30000-memory.dmp
    Filesize

    64KB

  • memory/3972-254-0x0000000000000000-mapping.dmp
  • memory/4596-266-0x0000000000000000-mapping.dmp
  • memory/4660-264-0x0000000000000000-mapping.dmp
  • memory/4720-258-0x0000000000000000-mapping.dmp