Analysis
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max time kernel
122s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
01/09/2024, 16:22
Static task
static1
Behavioral task
behavioral1
Sample
2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe
Resource
win10v2004-20240802-en
General
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Target
2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe
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Size
3.2MB
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MD5
0a19f7a830e0b3fa0eebc29e45880106
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SHA1
440e0b6203845743eb0d44919ede5e39bb1f43ff
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SHA256
d5e4d596cf768369eca7762dfc7f9cec691847ec226162cde98d59a5de19bb3e
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SHA512
6a9fc65dbc2316343b9905d51b7f1321732f0616a43b140f2ebb7ebbe9a886b944f708bf2e2bba23756503bb72f858f0652f8f324e5545090fed85471f143f64
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SSDEEP
3072:ygci+rDtAjIEbNdsPueRmwKiL1M4BYnWqAwzQlQeQltF19g19Qh:yGatRmviIQl0lX19g7O
Malware Config
Signatures
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows\CurrentVersion\Run\Serverx = "C:\\Windows\\system32\\Serverx.exe" 2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\Serverx.exe 2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe File created C:\Windows\SysWOW64\Serverx.exe 2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe -
System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1296 wrote to memory of 1980 1296 2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe 30 PID 1296 wrote to memory of 1980 1296 2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe 30 PID 1296 wrote to memory of 1980 1296 2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe 30 PID 1296 wrote to memory of 1980 1296 2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe 30 PID 1296 wrote to memory of 1204 1296 2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe 21 PID 1296 wrote to memory of 1204 1296 2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe 21
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:1204
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C:\Users\Admin\AppData\Local\Temp\2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe"2⤵
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1296 -
C:\Users\Admin\AppData\Local\Temp\2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-01_0a19f7a830e0b3fa0eebc29e45880106_bkransomware_virut.exe"3⤵
- System Location Discovery: System Language Discovery
PID:1980
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