Analysis
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max time kernel
122s -
max time network
124s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
18-05-2024 21:07
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe
Resource
win7-20240508-en
General
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Target
2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe
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Size
516KB
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MD5
633093bdaa92743e25b6dc1d5df47d45
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SHA1
373731986ec7fa0934df1a45062e9d44177f440d
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SHA256
0dc12fbb0282f1fc64239d64c0b37af0e0f953083130bd909d2b9b57575d5e6e
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SHA512
23e59cdf9991935d78e5d5bdc58e3a9d41032384c836a1eae63070aedf1e03edd68e91722bd059bbe9940c36d48c462880d0825a108f38fac9579fb081350377
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SSDEEP
6144:GoyZmTAsfJFakxaLjcMkc0Cax1PDGp6bYA0w601+dNT9/0626ASkVOAFplmO6bB:GoyIJsMPrPSp6bYboEdNYmOa
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:
2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe -
Processes:
2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe -
Processes:
2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe -
Detects executables packed with Sality Polymorphic Code Generator or Simple Poly Engine or Sality 11 IoCs
Processes:
resource yara_rule behavioral1/memory/1616-2-0x0000000001F40000-0x0000000002FFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/1616-6-0x0000000001F40000-0x0000000002FFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/1616-13-0x0000000001F40000-0x0000000002FFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/1616-4-0x0000000001F40000-0x0000000002FFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/1616-5-0x0000000001F40000-0x0000000002FFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/1616-7-0x0000000001F40000-0x0000000002FFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/1616-9-0x0000000001F40000-0x0000000002FFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/1616-11-0x0000000001F40000-0x0000000002FFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/1616-12-0x0000000001F40000-0x0000000002FFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/1616-10-0x0000000001F40000-0x0000000002FFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/1616-8-0x0000000001F40000-0x0000000002FFA000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine -
UPX dump on OEP (original entry point) 12 IoCs
Processes:
resource yara_rule behavioral1/memory/1616-2-0x0000000001F40000-0x0000000002FFA000-memory.dmp UPX behavioral1/memory/1616-6-0x0000000001F40000-0x0000000002FFA000-memory.dmp UPX behavioral1/memory/1616-13-0x0000000001F40000-0x0000000002FFA000-memory.dmp UPX behavioral1/memory/1616-4-0x0000000001F40000-0x0000000002FFA000-memory.dmp UPX behavioral1/memory/1616-5-0x0000000001F40000-0x0000000002FFA000-memory.dmp UPX behavioral1/memory/1616-7-0x0000000001F40000-0x0000000002FFA000-memory.dmp UPX behavioral1/memory/1616-9-0x0000000001F40000-0x0000000002FFA000-memory.dmp UPX behavioral1/memory/1616-11-0x0000000001F40000-0x0000000002FFA000-memory.dmp UPX behavioral1/memory/1616-22-0x0000000000400000-0x0000000000486000-memory.dmp UPX behavioral1/memory/1616-12-0x0000000001F40000-0x0000000002FFA000-memory.dmp UPX behavioral1/memory/1616-10-0x0000000001F40000-0x0000000002FFA000-memory.dmp UPX behavioral1/memory/1616-8-0x0000000001F40000-0x0000000002FFA000-memory.dmp UPX -
Processes:
resource yara_rule behavioral1/memory/1616-2-0x0000000001F40000-0x0000000002FFA000-memory.dmp upx behavioral1/memory/1616-6-0x0000000001F40000-0x0000000002FFA000-memory.dmp upx behavioral1/memory/1616-13-0x0000000001F40000-0x0000000002FFA000-memory.dmp upx behavioral1/memory/1616-4-0x0000000001F40000-0x0000000002FFA000-memory.dmp upx behavioral1/memory/1616-5-0x0000000001F40000-0x0000000002FFA000-memory.dmp upx behavioral1/memory/1616-7-0x0000000001F40000-0x0000000002FFA000-memory.dmp upx behavioral1/memory/1616-9-0x0000000001F40000-0x0000000002FFA000-memory.dmp upx behavioral1/memory/1616-11-0x0000000001F40000-0x0000000002FFA000-memory.dmp upx behavioral1/memory/1616-12-0x0000000001F40000-0x0000000002FFA000-memory.dmp upx behavioral1/memory/1616-10-0x0000000001F40000-0x0000000002FFA000-memory.dmp upx behavioral1/memory/1616-8-0x0000000001F40000-0x0000000002FFA000-memory.dmp upx -
Processes:
2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\Svc 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe -
Processes:
2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe -
Drops file in Windows directory 2 IoCs
Processes:
2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exedescription ioc process File created C:\Windows\f760c02 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe File opened for modification C:\Windows\SYSTEM.INI 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exepid process 1616 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exepid process 1616 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe 1616 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe 1616 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe -
System policy modification 1 TTPs 1 IoCs
Processes:
2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-18_633093bdaa92743e25b6dc1d5df47d45_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
PID:1616
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Create or Modify System Process
1Windows Service
1