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Analysis
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max time kernel
121s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
08/10/2024, 20:21
Static task
static1
Behavioral task
behavioral1
Sample
2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe
Resource
win7-20240708-en
General
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Target
2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe
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Size
528KB
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MD5
8b14bd4c2104dbe913e9f0f54fcb45f7
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SHA1
adaf7f4d02c66327ed1e8a5516e5180cc0680004
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SHA256
4914b446f8aec422a8ea5c5608992ae45a6be2f5c312d88b1022865303fd15d8
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SHA512
89af129061d94c53cb7145e326e1d7640232c140d351449ec506a4deb626afe76fcb731868af02fad4184bd2396772681099a61863b46eda0c5c1a596cbd849c
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SSDEEP
12288:+oyIJsMPrPPp6bYboEdNnbBqdS11yMSzY:+gVPrPPs+oE7NqdYJSzY
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 3 TTPs 3 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\Svc 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe -
resource yara_rule behavioral1/memory/2292-1-0x0000000001D50000-0x0000000002E0A000-memory.dmp upx behavioral1/memory/2292-5-0x0000000001D50000-0x0000000002E0A000-memory.dmp upx behavioral1/memory/2292-7-0x0000000001D50000-0x0000000002E0A000-memory.dmp upx behavioral1/memory/2292-4-0x0000000001D50000-0x0000000002E0A000-memory.dmp upx behavioral1/memory/2292-8-0x0000000001D50000-0x0000000002E0A000-memory.dmp upx behavioral1/memory/2292-6-0x0000000001D50000-0x0000000002E0A000-memory.dmp upx behavioral1/memory/2292-3-0x0000000001D50000-0x0000000002E0A000-memory.dmp upx behavioral1/memory/2292-9-0x0000000001D50000-0x0000000002E0A000-memory.dmp upx behavioral1/memory/2292-25-0x0000000001D50000-0x0000000002E0A000-memory.dmp upx behavioral1/memory/2292-10-0x0000000001D50000-0x0000000002E0A000-memory.dmp upx behavioral1/memory/2292-34-0x0000000001D50000-0x0000000002E0A000-memory.dmp upx -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\f768363 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe File opened for modification C:\Windows\SYSTEM.INI 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe -
System Location Discovery: System Language Discovery 1 TTPs 1 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 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe -
Suspicious use of AdjustPrivilegeToken 20 IoCs
description pid Process Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe Token: SeDebugPrivilege 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
pid Process 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2292 wrote to memory of 1108 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe 19 PID 2292 wrote to memory of 1164 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe 20 PID 2292 wrote to memory of 1204 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe 21 PID 2292 wrote to memory of 820 2292 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe 23 -
System policy modification 1 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe
Processes
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C:\Windows\system32\taskhost.exe"taskhost.exe"1⤵PID:1108
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C:\Windows\system32\Dwm.exe"C:\Windows\system32\Dwm.exe"1⤵PID:1164
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:1204
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C:\Users\Admin\AppData\Local\Temp\2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-08_8b14bd4c2104dbe913e9f0f54fcb45f7_bkransomware.exe"2⤵
- Modifies firewall policy service
- UAC bypass
- Windows security bypass
- Windows security modification
- Checks whether UAC is enabled
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2292
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C:\Windows\system32\DllHost.exeC:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}1⤵PID:820
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Create or Modify System Process
1Windows Service
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
4Disable or Modify System Firewall
1Disable or Modify Tools
3Modify Registry
5