Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
28-02-2024 00:53
Behavioral task
behavioral1
Sample
aa96389495cc5f553c6cb99cc65aa2dd.xls
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
aa96389495cc5f553c6cb99cc65aa2dd.xls
Resource
win10v2004-20240226-en
General
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Target
aa96389495cc5f553c6cb99cc65aa2dd.xls
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Size
36KB
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MD5
aa96389495cc5f553c6cb99cc65aa2dd
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SHA1
009279eb3e8b912318adaba6731c2c37355b4257
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SHA256
70a89f7a6edc643b75d777dea2bfffb248d83d4103f7c79ba1ed71614cb6e284
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SHA512
665dfc657b1f5a78b96ebedba5d453776ec718ed50a0b49bbebc955edf60d1a6a690574c7ce87a9567fbcda271b86f51ca8b6433676cb2411b303dc95c386682
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SSDEEP
768:/PqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJ2Yt1uYDme3/gN2qvzVE:3ok3hbdlylKsgqopeJBWhZFGkE+cL2NS
Malware Config
Signatures
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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 1288 1296 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 opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE 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 -
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-1-5-21-399997616-3400990511-967324271-1000_Classes\Local Settings explorer.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1296 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
EXCEL.EXEpid process 1296 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
EXCEL.EXEpid process 1296 EXCEL.EXE 1296 EXCEL.EXE 1296 EXCEL.EXE 1296 EXCEL.EXE 1296 EXCEL.EXE 1296 EXCEL.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
EXCEL.EXEexplorer.exedescription pid process target process PID 1296 wrote to memory of 1288 1296 EXCEL.EXE explorer.exe PID 1296 wrote to memory of 1288 1296 EXCEL.EXE explorer.exe PID 4624 wrote to memory of 4468 4624 explorer.exe WScript.exe PID 4624 wrote to memory of 4468 4624 explorer.exe WScript.exe
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\aa96389495cc5f553c6cb99cc65aa2dd.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:1296 -
C:\Windows\explorer.exeexplorer.exe C:\Users\Public\Documents\lgHjGk.vbs2⤵
- Process spawned unexpected child process
PID:1288
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C:\Windows\explorer.exeC:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4624 -
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\lgHjGk.vbs"2⤵PID:4468
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
563B
MD53ed513e92c2d89128c5638c999e366d2
SHA107828789668cc68d56b209f76e5588636e49ce4b
SHA25668d568ea2965ff8888a17da09cb0eed76bb4f591a415eeb91f433c72c5fe011e
SHA5123a42bb7a84f524555fbcf49643f8a47d5544f1155b61c0a946f6987ff6fd16b04f506ea96c36aa09922c2002e5348934ee631b335dd9ab2c1e2e32ea4a1d586e