Analysis
-
max time kernel
59s -
max time network
35s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
04-09-2024 22:04
Behavioral task
behavioral1
Sample
a79c44d70d375a1114be86656363f59bfd2e3f675f090ef124a47e4e87e042d4.xls
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
a79c44d70d375a1114be86656363f59bfd2e3f675f090ef124a47e4e87e042d4.xls
Resource
win10v2004-20240802-en
General
-
Target
a79c44d70d375a1114be86656363f59bfd2e3f675f090ef124a47e4e87e042d4.xls
-
Size
36KB
-
MD5
8ca4889cfb1abbd167fc1f1b55ccff10
-
SHA1
6fb4fb185edaf0fea9e8bdcbe2a08c8177360c9d
-
SHA256
a79c44d70d375a1114be86656363f59bfd2e3f675f090ef124a47e4e87e042d4
-
SHA512
a9f24db0a162d16e8896d537aaddcac3b5ad241ef5fb438c2cd96e40baa73a53dc7f17b3138d4c849b408258df5097d16d3697b0aafc5f0a898bf9f4c6870798
-
SSDEEP
768:TPqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJieRjSjtRuHqcTai8J:Lok3hbdlylKsgqopeJBWhZFGkE+cL2NB
Malware Config
Signatures
-
Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
explorer.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2656 4728 explorer.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 -
Modifies registry class 1 IoCs
Processes:
explorer.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000_Classes\Local Settings explorer.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 4728 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
EXCEL.EXEpid process 4728 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
EXCEL.EXEpid process 4728 EXCEL.EXE 4728 EXCEL.EXE 4728 EXCEL.EXE 4728 EXCEL.EXE 4728 EXCEL.EXE 4728 EXCEL.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
EXCEL.EXEexplorer.exedescription pid process target process PID 4728 wrote to memory of 2656 4728 EXCEL.EXE explorer.exe PID 4728 wrote to memory of 2656 4728 EXCEL.EXE explorer.exe PID 1108 wrote to memory of 1348 1108 explorer.exe WScript.exe PID 1108 wrote to memory of 1348 1108 explorer.exe WScript.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\a79c44d70d375a1114be86656363f59bfd2e3f675f090ef124a47e4e87e042d4.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:4728 -
C:\Windows\explorer.exeexplorer.exe C:\Users\Public\Documents\YrkHXr.vbs2⤵
- Process spawned unexpected child process
PID:2656
-
C:\Windows\explorer.exeC:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1108 -
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\YrkHXr.vbs"2⤵PID:1348
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
580B
MD5e44f54f266828b01033e537ef1ea23d3
SHA198695dacefc757ef56d39f0eda3200f7a3708c52
SHA2568b66942c59fa01cea50ed02e8fc9fed096fa8c981ef8e16dc4a5a216271ebd60
SHA51265e7e53b287df0ca76f38514f1739d020ed9c91583708e821ec806094c3d5ce8f36fc4e4eba6b4fffc7aab625c430e06121d3035371ccc2a4cddfbf2076f72be