Analysis
-
max time kernel
149s -
max time network
145s -
platform
windows10_x64 -
resource
win10-20220414-en -
submitted
07-07-2022 04:00
Behavioral task
behavioral1
Sample
4c646f3841c5e36e36536634c08f966667d0718efdbf6409cad4233d410fd603.xls
Resource
win10-20220414-en
General
-
Target
4c646f3841c5e36e36536634c08f966667d0718efdbf6409cad4233d410fd603.xls
-
Size
95KB
-
MD5
e184ae09c5bffa4e616d67aef5601994
-
SHA1
3c030f0457d80ced1e25262f2f5218237ded7813
-
SHA256
4c646f3841c5e36e36536634c08f966667d0718efdbf6409cad4233d410fd603
-
SHA512
a2d9f9353ec94bfc678182c3eec6157bfa99d0c50d550fd217eae8c9a431f4a118c8f464c75db785e85112d1a5c7e671d6f74289df68bdfda1d1e23361a48f19
Malware Config
Extracted
https://edoraseguros.com.br/cgi-bin/jQNq9wlH1GXU/
http://earthmach.co.za/libraries/tWkZh9YrXbTd6IeX/
http://finvest.rs/wp-admin/Hr9nVNTIHgw59S/
http://efverstedt.se/5jjaV/w7fLEHJ20xn0qD/
Signatures
-
Process spawned unexpected child process 4 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
regsvr32.exeregsvr32.exeregsvr32.exeregsvr32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4904 2600 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4928 2600 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4872 2600 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 416 2600 regsvr32.exe EXCEL.EXE -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
EXCEL.EXEdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 2600 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 2600 EXCEL.EXE 2600 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 2600 EXCEL.EXE 2600 EXCEL.EXE 2600 EXCEL.EXE 2600 EXCEL.EXE 2600 EXCEL.EXE 2600 EXCEL.EXE 2600 EXCEL.EXE 2600 EXCEL.EXE 2600 EXCEL.EXE 2600 EXCEL.EXE 2600 EXCEL.EXE 2600 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 2600 wrote to memory of 4904 2600 EXCEL.EXE regsvr32.exe PID 2600 wrote to memory of 4904 2600 EXCEL.EXE regsvr32.exe PID 2600 wrote to memory of 4928 2600 EXCEL.EXE regsvr32.exe PID 2600 wrote to memory of 4928 2600 EXCEL.EXE regsvr32.exe PID 2600 wrote to memory of 4872 2600 EXCEL.EXE regsvr32.exe PID 2600 wrote to memory of 4872 2600 EXCEL.EXE regsvr32.exe PID 2600 wrote to memory of 416 2600 EXCEL.EXE regsvr32.exe PID 2600 wrote to memory of 416 2600 EXCEL.EXE regsvr32.exe
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\4c646f3841c5e36e36536634c08f966667d0718efdbf6409cad4233d410fd603.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
-
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci1.ocx2⤵
- Process spawned unexpected child process
-
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci2.ocx2⤵
- Process spawned unexpected child process
-
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci3.ocx2⤵
- Process spawned unexpected child process
-
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci4.ocx2⤵
- Process spawned unexpected child process
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
memory/416-272-0x0000000000000000-mapping.dmp
-
memory/2600-117-0x00007FF9532C0000-0x00007FF9532D0000-memory.dmpFilesize
64KB
-
memory/2600-118-0x00007FF9532C0000-0x00007FF9532D0000-memory.dmpFilesize
64KB
-
memory/2600-119-0x00007FF9532C0000-0x00007FF9532D0000-memory.dmpFilesize
64KB
-
memory/2600-120-0x00007FF9532C0000-0x00007FF9532D0000-memory.dmpFilesize
64KB
-
memory/2600-129-0x00007FF94FA40000-0x00007FF94FA50000-memory.dmpFilesize
64KB
-
memory/2600-130-0x00007FF94FA40000-0x00007FF94FA50000-memory.dmpFilesize
64KB
-
memory/4872-271-0x0000000000000000-mapping.dmp
-
memory/4904-269-0x0000000000000000-mapping.dmp
-
memory/4928-270-0x0000000000000000-mapping.dmp