Analysis
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max time kernel
120s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
28-04-2024 05:56
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe
Resource
win7-20240221-en
General
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Target
2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe
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Size
529KB
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MD5
4c21e96689435a0e7fce101fa07a12b4
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SHA1
aa7dee5e9382179ff6d87f9573931706c7c3456e
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SHA256
38bcc36a3062e9499e3d90b8fececdec2911c231103038450d131c009c2052c3
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SHA512
9ca802fbaa6d50936d910b99d9c213652ad34f04d3f7f291d2c47a16244b26e329981c830e1ee77e0ed5ada87c78d53b0e76cc4276ada5eb0c3df0ee0621b01e
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SSDEEP
6144:4YrIOXsqmWzJrdc6GJRQURGUA9PRWLiFSbE56FORFPwcF77aM4FIkq:U2lWRPRhA9PRWg9ocNaMWq
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
http://www.klkjwre9fqwieluoi.info/
http://kukutrustnet777888.info/
Signatures
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Modifies firewall policy service 2 TTPs 3 IoCs
Processes:
2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe -
Processes:
2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe -
Processes:
2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe -
Detects executables packed with Sality Polymorphic Code Generator or Simple Poly Engine or Sality 7 IoCs
Processes:
resource yara_rule behavioral1/memory/2660-1-0x0000000001E90000-0x0000000002F1E000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2660-3-0x0000000001E90000-0x0000000002F1E000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2660-4-0x0000000001E90000-0x0000000002F1E000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2660-5-0x0000000001E90000-0x0000000002F1E000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2660-14-0x0000000001E90000-0x0000000002F1E000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2660-7-0x0000000001E90000-0x0000000002F1E000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2660-6-0x0000000001E90000-0x0000000002F1E000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine -
UPX dump on OEP (original entry point) 8 IoCs
Processes:
resource yara_rule behavioral1/memory/2660-1-0x0000000001E90000-0x0000000002F1E000-memory.dmp UPX behavioral1/memory/2660-13-0x0000000000400000-0x000000000048A000-memory.dmp UPX behavioral1/memory/2660-3-0x0000000001E90000-0x0000000002F1E000-memory.dmp UPX behavioral1/memory/2660-4-0x0000000001E90000-0x0000000002F1E000-memory.dmp UPX behavioral1/memory/2660-5-0x0000000001E90000-0x0000000002F1E000-memory.dmp UPX behavioral1/memory/2660-14-0x0000000001E90000-0x0000000002F1E000-memory.dmp UPX behavioral1/memory/2660-7-0x0000000001E90000-0x0000000002F1E000-memory.dmp UPX behavioral1/memory/2660-6-0x0000000001E90000-0x0000000002F1E000-memory.dmp UPX -
Processes:
resource yara_rule behavioral1/memory/2660-1-0x0000000001E90000-0x0000000002F1E000-memory.dmp upx behavioral1/memory/2660-3-0x0000000001E90000-0x0000000002F1E000-memory.dmp upx behavioral1/memory/2660-4-0x0000000001E90000-0x0000000002F1E000-memory.dmp upx behavioral1/memory/2660-5-0x0000000001E90000-0x0000000002F1E000-memory.dmp upx behavioral1/memory/2660-14-0x0000000001E90000-0x0000000002F1E000-memory.dmp upx behavioral1/memory/2660-7-0x0000000001E90000-0x0000000002F1E000-memory.dmp upx behavioral1/memory/2660-6-0x0000000001E90000-0x0000000002F1E000-memory.dmp upx -
Processes:
2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\Svc 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe -
Processes:
2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe -
Drops file in Windows directory 1 IoCs
Processes:
2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exedescription ioc process File opened for modification C:\Windows\SYSTEM.INI 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exepid process 2660 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exepid process 2660 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe 2660 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe 2660 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe -
System policy modification 1 TTPs 1 IoCs
Processes:
2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-28_4c21e96689435a0e7fce101fa07a12b4_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
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Downloads
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memory/2660-0-0x0000000000400000-0x000000000048A000-memory.dmpFilesize
552KB
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memory/2660-1-0x0000000001E90000-0x0000000002F1E000-memory.dmpFilesize
16.6MB
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memory/2660-13-0x0000000000400000-0x000000000048A000-memory.dmpFilesize
552KB
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memory/2660-3-0x0000000001E90000-0x0000000002F1E000-memory.dmpFilesize
16.6MB
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memory/2660-4-0x0000000001E90000-0x0000000002F1E000-memory.dmpFilesize
16.6MB
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memory/2660-5-0x0000000001E90000-0x0000000002F1E000-memory.dmpFilesize
16.6MB
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memory/2660-14-0x0000000001E90000-0x0000000002F1E000-memory.dmpFilesize
16.6MB
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memory/2660-7-0x0000000001E90000-0x0000000002F1E000-memory.dmpFilesize
16.6MB
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memory/2660-6-0x0000000001E90000-0x0000000002F1E000-memory.dmpFilesize
16.6MB