Analysis
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max time kernel
137s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
01-11-2022 02:39
Static task
static1
Behavioral task
behavioral1
Sample
8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe
Resource
win10v2004-20220812-en
General
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Target
8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe
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Size
4.9MB
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MD5
44bbdef11c9b3468bf1826999eef5bcb
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SHA1
30f13f1903a31c21fb6cff1471e99cc2ef031600
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SHA256
8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0
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SHA512
4c87c6adc6be200964a88d17bb943dddf94994d7ebbbed7ca5191183c234dca77cd73026d6db3fdb373dbf3d8d7333f80f3e189c4016d70e982eafedc9abef4f
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SSDEEP
98304:nHUIss4HTUFA7IGcJ/108bu3I+iZ7q1zPPXNAjtVa/u:nFnUcJ1Vq3I+7NAjtVa/u
Malware Config
Extracted
cobaltstrike
0
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watermark
0
Signatures
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Cobaltstrike
Detected malicious payload which is part of Cobaltstrike.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description 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
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE -
Modifies registry class 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4132 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 4 IoCs
pid Process 2860 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe 2860 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe 2860 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe 2860 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe -
Suspicious use of SendNotifyMessage 4 IoCs
pid Process 2860 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe 2860 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe 2860 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe 2860 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe -
Suspicious use of SetWindowsHookEx 15 IoCs
pid Process 2860 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe 2860 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe 2860 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe 4132 EXCEL.EXE 4132 EXCEL.EXE 4132 EXCEL.EXE 4132 EXCEL.EXE 4132 EXCEL.EXE 4132 EXCEL.EXE 4132 EXCEL.EXE 4132 EXCEL.EXE 4132 EXCEL.EXE 4132 EXCEL.EXE 4132 EXCEL.EXE 4132 EXCEL.EXE -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2860 wrote to memory of 4132 2860 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe 80 PID 2860 wrote to memory of 4132 2860 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe 80 PID 2860 wrote to memory of 4132 2860 8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe 80
Processes
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C:\Users\Admin\AppData\Local\Temp\8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe"C:\Users\Admin\AppData\Local\Temp\8c144f7d80cb70fc428dba1860dc8c19b19491acc7633d57c836ce29873754d0.exe"1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2860 -
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\·ÀÒß³öÐÐͳ¼Æ±í.xlsx"2⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:4132
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
9KB
MD5af91fb9933c08b316fd43195a48b68ed
SHA1f595eb04cb1acb6d9c80a5543b8abf929f6b5251
SHA2567fe39dc7e70d5be92d5f484bdf103babef7ae6b0560b605e08a46436aacd05ca
SHA5120b823194c49a215754be7f9ee7c497f9bb024bccf4142149c3d9fae585982d544b46b2730a9fa5082507fcd84cd5efd722620f1dd9d79621b88c2a7ece883d22