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Analysis
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max time kernel
133s -
max time network
137s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
20/11/2024, 22:08
Behavioral task
behavioral1
Sample
de837c2f5df7313d8d64e0d83bdb87081de96b24a22c38894d70d359db019427.xls
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
de837c2f5df7313d8d64e0d83bdb87081de96b24a22c38894d70d359db019427.xls
Resource
win10v2004-20241007-en
General
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Target
de837c2f5df7313d8d64e0d83bdb87081de96b24a22c38894d70d359db019427.xls
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Size
70KB
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MD5
aea87205bedf34dc9f903db0a710e6d0
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SHA1
5d3e80e6bc99a741c4b90e58523953c66d4b79f4
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SHA256
de837c2f5df7313d8d64e0d83bdb87081de96b24a22c38894d70d359db019427
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SHA512
9bf897743431898137501f379375fb7609f4cdb600cbaf50e5cbfa9375a3ca71dbe329ffbf2b75e234dc86080b21c92fcf0c20a99322b4578993a7135efde88e
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SSDEEP
1536:OhKpb8rGYrMPe3q7Q0XV5xtezE8vG8UM+KJ+hDcnTLiQrRTZws8Eo:uKpb8rGYrMPe3q7Q0XV5xtezE8vG8UM2
Malware Config
Extracted
https://sacvasanth.com/public/lyP2lh1hlJr/
https://webguruindia.com/theme/wTbEyLVvMNB3j/
http://stockmorehouse.com/Casa_Grande/AS4VPkTsOqWDGGO/
Signatures
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Process spawned unexpected child process 3 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3212 2428 regsvr32.exe 81 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1732 2428 regsvr32.exe 81 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1476 2428 regsvr32.exe 81 -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description 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
description 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
pid Process 2428 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 2428 EXCEL.EXE 2428 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 2428 EXCEL.EXE 2428 EXCEL.EXE 2428 EXCEL.EXE 2428 EXCEL.EXE 2428 EXCEL.EXE 2428 EXCEL.EXE 2428 EXCEL.EXE 2428 EXCEL.EXE 2428 EXCEL.EXE 2428 EXCEL.EXE 2428 EXCEL.EXE 2428 EXCEL.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2428 wrote to memory of 3212 2428 EXCEL.EXE 86 PID 2428 wrote to memory of 3212 2428 EXCEL.EXE 86 PID 2428 wrote to memory of 1732 2428 EXCEL.EXE 87 PID 2428 wrote to memory of 1732 2428 EXCEL.EXE 87 PID 2428 wrote to memory of 1476 2428 EXCEL.EXE 88 PID 2428 wrote to memory of 1476 2428 EXCEL.EXE 88
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\de837c2f5df7313d8d64e0d83bdb87081de96b24a22c38894d70d359db019427.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:2428 -
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\cusoa1.ocx2⤵
- Process spawned unexpected child process
PID:3212
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\cusoa2.ocx2⤵
- Process spawned unexpected child process
PID:1732
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\cusoa3.ocx2⤵
- Process spawned unexpected child process
PID:1476
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms
Filesize4KB
MD59a11aa7ab3d74bfd9434f261644595ff
SHA1b100b5f24211dcada3f971a6ae18023f6d0a3c3f
SHA25690956b4ae636c658166937d1ea29a3d6f252774f36269e26867608b867e4b423
SHA512046478c88de4df5655ce0cebc88cd08ce6272474d2d63ef6e53580ce39db90487f8f28e8d3b5240b02b6f55e175a02d4ca743a9a90845234109806aa29e22025