Analysis

  • max time kernel
    128s
  • max time network
    131s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    07-07-2022 04:12

General

  • Target

    4e9e420ec600f81b78139ab1da528cb1ea1680188a9625812bee7f0ed311df4d.xls

  • Size

    95KB

  • Sample

    220707-esslsschbj

  • MD5

    699d5e55a29a09141b7ccb658fd2a295

  • SHA1

    39fc71193b190e3abdb2fdbfe4ba637ec48297f4

  • SHA256

    4e9e420ec600f81b78139ab1da528cb1ea1680188a9625812bee7f0ed311df4d

  • SHA512

    7d6aa7bac8468345019792f1296e45abffec614c38b3cca43e1ab9b4484c0ff189b9e3de9e9013e3d89df3f3fef17771fc86a421b8884409f271ae18c47110fb

Score
10/10

Malware Config

Extracted

Language xlm4.0
Source
URLs
xlm40.dropper

https://edoraseguros.com.br/cgi-bin/jQNq9wlH1GXU/

xlm40.dropper

http://earthmach.co.za/libraries/tWkZh9YrXbTd6IeX/

xlm40.dropper

http://finvest.rs/wp-admin/Hr9nVNTIHgw59S/

xlm40.dropper

http://efverstedt.se/5jjaV/w7fLEHJ20xn0qD/

Signatures 7

  • 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 5

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\4e9e420ec600f81b78139ab1da528cb1ea1680188a9625812bee7f0ed311df4d.xls"
    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:3480
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
      Process spawned unexpected child process
      PID:2796
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
      Process spawned unexpected child process
      PID:2476
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
      Process spawned unexpected child process
      PID:2996
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
      Process spawned unexpected child process
      PID:3964

Network

MITRE ATT&CK Matrix

Collection

    Command and Control

      Credential Access

        Defense Evasion

          Execution

            Exfiltration

              Impact

                Initial Access

                  Lateral Movement

                    Persistence

                      Privilege Escalation

                        Replay Monitor

                        00:00 00:00

                        Downloads

                        • memory/2476-253-0x0000000000000000-mapping.dmp
                        • memory/2796-252-0x0000000000000000-mapping.dmp
                        • memory/2996-254-0x0000000000000000-mapping.dmp
                        • memory/3480-119-0x00007FF84FAA0000-0x00007FF84FAB0000-memory.dmp
                        • memory/3480-128-0x00007FF84CAB0000-0x00007FF84CAC0000-memory.dmp
                        • memory/3480-129-0x00007FF84CAB0000-0x00007FF84CAC0000-memory.dmp
                        • memory/3480-116-0x00007FF84FAA0000-0x00007FF84FAB0000-memory.dmp
                        • memory/3480-118-0x00007FF84FAA0000-0x00007FF84FAB0000-memory.dmp
                        • memory/3480-117-0x00007FF84FAA0000-0x00007FF84FAB0000-memory.dmp
                        • memory/3480-291-0x00007FF84FAA0000-0x00007FF84FAB0000-memory.dmp
                        • memory/3480-292-0x00007FF84FAA0000-0x00007FF84FAB0000-memory.dmp
                        • memory/3480-293-0x00007FF84FAA0000-0x00007FF84FAB0000-memory.dmp
                        • memory/3480-294-0x00007FF84FAA0000-0x00007FF84FAB0000-memory.dmp
                        • memory/3964-255-0x0000000000000000-mapping.dmp