Analysis
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max time kernel
119s -
max time network
124s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
19-05-2024 13:43
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe
Resource
win7-20240221-en
General
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Target
2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe
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Size
525KB
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MD5
a6e1e52c6ba49a3fc97508c84e51a435
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SHA1
4142dfa81ca4c99b6f634cd30247b646c2ceeb6e
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SHA256
069bd683d48e239fea7f0cb0d3d5c1d42c253debdceb5da029fba31b9036ff69
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SHA512
d7f4f018c63ae68b0901cbd43ec9d0bb7b03a7c2396d59926b83ded8b233734fb44476c09c21bf3f17b6cd076e434b0e96f3a3a5adfbaf3503163acae62508fe
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SSDEEP
6144:iYrIOXsqmWzJrdc6GJRQUXGUA9PRWLiFSbE56FORF5Y1RR8bf8HN:y2lWRPXhA9PRWg9pCKUHN
Malware Config
Extracted
sality
http://89.119.67.154/testo5/
http://kukutrustnet777.info/home.gif
http://kukutrustnet888.info/home.gif
http://kukutrustnet987.info/home.gif
Signatures
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Modifies firewall policy service 2 TTPs 3 IoCs
Processes:
2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe -
Processes:
2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe -
Processes:
2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe -
Detects executables packed with Sality Polymorphic Code Generator or Simple Poly Engine or Sality 12 IoCs
Processes:
resource yara_rule behavioral1/memory/2888-9-0x0000000001E40000-0x0000000002EFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2888-1-0x0000000001E40000-0x0000000002EFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2888-4-0x0000000001E40000-0x0000000002EFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2888-13-0x0000000001E40000-0x0000000002EFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2888-6-0x0000000001E40000-0x0000000002EFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2888-12-0x0000000001E40000-0x0000000002EFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2888-5-0x0000000001E40000-0x0000000002EFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2888-10-0x0000000001E40000-0x0000000002EFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2888-3-0x0000000001E40000-0x0000000002EFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2888-7-0x0000000001E40000-0x0000000002EFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2888-8-0x0000000001E40000-0x0000000002EFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2888-11-0x0000000001E40000-0x0000000002EFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine -
UPX dump on OEP (original entry point) 13 IoCs
Processes:
resource yara_rule behavioral1/memory/2888-9-0x0000000001E40000-0x0000000002EFA000-memory.dmp UPX behavioral1/memory/2888-1-0x0000000001E40000-0x0000000002EFA000-memory.dmp UPX behavioral1/memory/2888-4-0x0000000001E40000-0x0000000002EFA000-memory.dmp UPX behavioral1/memory/2888-13-0x0000000001E40000-0x0000000002EFA000-memory.dmp UPX behavioral1/memory/2888-22-0x0000000000400000-0x0000000000489000-memory.dmp UPX behavioral1/memory/2888-6-0x0000000001E40000-0x0000000002EFA000-memory.dmp UPX behavioral1/memory/2888-12-0x0000000001E40000-0x0000000002EFA000-memory.dmp UPX behavioral1/memory/2888-5-0x0000000001E40000-0x0000000002EFA000-memory.dmp UPX behavioral1/memory/2888-10-0x0000000001E40000-0x0000000002EFA000-memory.dmp UPX behavioral1/memory/2888-3-0x0000000001E40000-0x0000000002EFA000-memory.dmp UPX behavioral1/memory/2888-7-0x0000000001E40000-0x0000000002EFA000-memory.dmp UPX behavioral1/memory/2888-8-0x0000000001E40000-0x0000000002EFA000-memory.dmp UPX behavioral1/memory/2888-11-0x0000000001E40000-0x0000000002EFA000-memory.dmp UPX -
Processes:
resource yara_rule behavioral1/memory/2888-9-0x0000000001E40000-0x0000000002EFA000-memory.dmp upx behavioral1/memory/2888-1-0x0000000001E40000-0x0000000002EFA000-memory.dmp upx behavioral1/memory/2888-4-0x0000000001E40000-0x0000000002EFA000-memory.dmp upx behavioral1/memory/2888-13-0x0000000001E40000-0x0000000002EFA000-memory.dmp upx behavioral1/memory/2888-6-0x0000000001E40000-0x0000000002EFA000-memory.dmp upx behavioral1/memory/2888-12-0x0000000001E40000-0x0000000002EFA000-memory.dmp upx behavioral1/memory/2888-5-0x0000000001E40000-0x0000000002EFA000-memory.dmp upx behavioral1/memory/2888-10-0x0000000001E40000-0x0000000002EFA000-memory.dmp upx behavioral1/memory/2888-3-0x0000000001E40000-0x0000000002EFA000-memory.dmp upx behavioral1/memory/2888-7-0x0000000001E40000-0x0000000002EFA000-memory.dmp upx behavioral1/memory/2888-8-0x0000000001E40000-0x0000000002EFA000-memory.dmp upx behavioral1/memory/2888-11-0x0000000001E40000-0x0000000002EFA000-memory.dmp upx -
Processes:
2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\Svc 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe -
Processes:
2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe -
Drops file in Windows directory 2 IoCs
Processes:
2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exedescription ioc process File created C:\Windows\f7695e9 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe File opened for modification C:\Windows\SYSTEM.INI 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exepid process 2888 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exepid process 2888 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe 2888 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe 2888 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe -
System policy modification 1 TTPs 1 IoCs
Processes:
2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-19_a6e1e52c6ba49a3fc97508c84e51a435_bkransomware.exe"1⤵
- Modifies firewall policy service
- UAC bypass
- Windows security bypass
- Windows security modification
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- System policy modification
Network
MITRE ATT&CK Matrix ATT&CK v13
Privilege Escalation
Create or Modify System Process
1Windows Service
1Abuse Elevation Control Mechanism
1Bypass User Account Control
1Replay Monitor
Loading Replay Monitor...
Downloads
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memory/2888-0-0x0000000000400000-0x0000000000489000-memory.dmpFilesize
548KB
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memory/2888-9-0x0000000001E40000-0x0000000002EFA000-memory.dmpFilesize
16.7MB
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memory/2888-1-0x0000000001E40000-0x0000000002EFA000-memory.dmpFilesize
16.7MB
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memory/2888-4-0x0000000001E40000-0x0000000002EFA000-memory.dmpFilesize
16.7MB
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memory/2888-13-0x0000000001E40000-0x0000000002EFA000-memory.dmpFilesize
16.7MB
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memory/2888-22-0x0000000000400000-0x0000000000489000-memory.dmpFilesize
548KB
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memory/2888-6-0x0000000001E40000-0x0000000002EFA000-memory.dmpFilesize
16.7MB
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memory/2888-12-0x0000000001E40000-0x0000000002EFA000-memory.dmpFilesize
16.7MB
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memory/2888-5-0x0000000001E40000-0x0000000002EFA000-memory.dmpFilesize
16.7MB
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memory/2888-10-0x0000000001E40000-0x0000000002EFA000-memory.dmpFilesize
16.7MB
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memory/2888-3-0x0000000001E40000-0x0000000002EFA000-memory.dmpFilesize
16.7MB
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memory/2888-7-0x0000000001E40000-0x0000000002EFA000-memory.dmpFilesize
16.7MB
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memory/2888-8-0x0000000001E40000-0x0000000002EFA000-memory.dmpFilesize
16.7MB
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memory/2888-11-0x0000000001E40000-0x0000000002EFA000-memory.dmpFilesize
16.7MB