Analysis
-
max time kernel
173s -
max time network
208s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
26-11-2022 03:09
Behavioral task
behavioral1
Sample
77e581f9d9191f8951bd420cb8fafed722f3372ff2d8769e664b8426052ae34a.xls
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
77e581f9d9191f8951bd420cb8fafed722f3372ff2d8769e664b8426052ae34a.xls
Resource
win10v2004-20221111-en
General
-
Target
77e581f9d9191f8951bd420cb8fafed722f3372ff2d8769e664b8426052ae34a.xls
-
Size
246KB
-
MD5
c591ed07be8898f0ab488c72ea660a97
-
SHA1
e57f6fab9a16e3646d428e47e21e4decf4dd9640
-
SHA256
77e581f9d9191f8951bd420cb8fafed722f3372ff2d8769e664b8426052ae34a
-
SHA512
fc9efce0ea4ca2b4c5e151b6be812b9bacafe0e894904a8187b6d45249a409b9af5e059d18d469b271bee7e7546be61d881ba631ce850dee5f069c2c0e7aa82c
-
SSDEEP
3072:16d9cOrhYxL6R4X29mBHb1AURKf7wWVbrE7ITk9SAJtXwY4NZ:16d9cOViHpbRKf7Ww
Malware Config
Signatures
-
Process spawned unexpected child process 3 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
cmd.execmd.execmd.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2412 4568 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4576 4568 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2216 4568 cmd.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\ProcessorNameString EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz 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 4568 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 4568 EXCEL.EXE 4568 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 4568 EXCEL.EXE 4568 EXCEL.EXE 4568 EXCEL.EXE 4568 EXCEL.EXE 4568 EXCEL.EXE 4568 EXCEL.EXE 4568 EXCEL.EXE 4568 EXCEL.EXE 4568 EXCEL.EXE 4568 EXCEL.EXE 4568 EXCEL.EXE 4568 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
EXCEL.EXEcmd.exedescription pid process target process PID 4568 wrote to memory of 2412 4568 EXCEL.EXE cmd.exe PID 4568 wrote to memory of 2412 4568 EXCEL.EXE cmd.exe PID 4568 wrote to memory of 4576 4568 EXCEL.EXE cmd.exe PID 4568 wrote to memory of 4576 4568 EXCEL.EXE cmd.exe PID 4568 wrote to memory of 2216 4568 EXCEL.EXE cmd.exe PID 4568 wrote to memory of 2216 4568 EXCEL.EXE cmd.exe PID 2412 wrote to memory of 4452 2412 cmd.exe attrib.exe PID 2412 wrote to memory of 4452 2412 cmd.exe attrib.exe -
Views/modifies file attributes 1 TTPs 1 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\77e581f9d9191f8951bd420cb8fafed722f3372ff2d8769e664b8426052ae34a.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\cmd.exeC:\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
-
C:\Windows\system32\attrib.exeattrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"3⤵
- Views/modifies file attributes
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
-
C:\Windows\system32\werfault.exewerfault.exe /h /shared Global\5890a47f0dd34320ab73f77eac32f609 /t 3040 /p 45681⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
memory/2216-141-0x0000000000000000-mapping.dmp
-
memory/2412-139-0x0000000000000000-mapping.dmp
-
memory/4452-142-0x0000000000000000-mapping.dmp
-
memory/4568-132-0x00007FFC784B0000-0x00007FFC784C0000-memory.dmpFilesize
64KB
-
memory/4568-133-0x00007FFC784B0000-0x00007FFC784C0000-memory.dmpFilesize
64KB
-
memory/4568-134-0x00007FFC784B0000-0x00007FFC784C0000-memory.dmpFilesize
64KB
-
memory/4568-136-0x00007FFC784B0000-0x00007FFC784C0000-memory.dmpFilesize
64KB
-
memory/4568-135-0x00007FFC784B0000-0x00007FFC784C0000-memory.dmpFilesize
64KB
-
memory/4568-137-0x00007FFC762F0000-0x00007FFC76300000-memory.dmpFilesize
64KB
-
memory/4568-138-0x00007FFC762F0000-0x00007FFC76300000-memory.dmpFilesize
64KB
-
memory/4568-143-0x0000019A24B65000-0x0000019A24B67000-memory.dmpFilesize
8KB
-
memory/4576-140-0x0000000000000000-mapping.dmp