ramnit | 12af93d29007b28f8e5cd5db210de0b91e0e84ca318893a79d0efc11f813fb9d

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,C:\\Users\\Admin\\AppData\\Local\\jdhbbxgx\\rjyqlbmo.exe"	svchost.exe

Modifies firewall policy service 2 TTPs 6 IoCs

evasion

Modify Registry

Modify Existing Service

T1031

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	jowlnaou.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	jowlnaou.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	jowlnaou.exe

Modifies security service 2 TTPs 8 IoCs

evasion

Modify Registry

Modify Existing Service

T1031

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WinDefend\Start = "4"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wuauserv\Start = "4"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\MpsSvc\Start = "4"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4"	jowlnaou.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WinDefend\Start = "4"	jowlnaou.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wuauserv\Start = "4"	jowlnaou.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\MpsSvc\Start = "4"	jowlnaou.exe

Ramnit
Ramnit is a versatile family that holds viruses, worms, and Trojans.
trojan spyware stealer worm banker ramnit

UAC bypass 3 TTPs 2 IoCs

Bypass User Account Control

T1088

Disabling Security Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	jowlnaou.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchost.exe

Windows security bypass 2 TTPs 12 IoCs

Disabling Security Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	jowlnaou.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	jowlnaou.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	jowlnaou.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	jowlnaou.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	jowlnaou.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1"	jowlnaou.exe

Executes dropped EXE 6 IoCs

pid	Process
888	rvtql1X1e
1520	rvtql1X1e
1968	jowlnaou.exe
1632	jowlnaou.exe
1696	jowlnaou.exe
1456	jowlnaou.exe

UPX packed file 10 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1520-67-0x0000000000400000-0x0000000000436000-memory.dmp	upx
behavioral1/memory/1520-69-0x0000000000400000-0x0000000000436000-memory.dmp	upx
behavioral1/memory/1520-70-0x0000000000400000-0x0000000000436000-memory.dmp	upx
behavioral1/memory/1520-75-0x0000000000400000-0x0000000000436000-memory.dmp	upx
behavioral1/memory/1520-76-0x0000000000400000-0x0000000000436000-memory.dmp	upx
behavioral1/memory/888-77-0x0000000000240000-0x0000000000270000-memory.dmp	upx
behavioral1/memory/1520-78-0x0000000000400000-0x0000000000436000-memory.dmp	upx
behavioral1/memory/1520-100-0x0000000000400000-0x0000000000436000-memory.dmp	upx
behavioral1/memory/1632-125-0x0000000000400000-0x0000000000436000-memory.dmp	upx
behavioral1/memory/1456-148-0x0000000000400000-0x0000000000436000-memory.dmp	upx

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rjyqlbmo.exe	svchost.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rjyqlbmo.exe	svchost.exe

Loads dropped DLL 9 IoCs

pid	Process
1712	rundll32.exe
1712	rundll32.exe
888	rvtql1X1e
1520	rvtql1X1e
1520	rvtql1X1e
1968	jowlnaou.exe
1760	cmd.exe
1760	cmd.exe
1696	jowlnaou.exe

Windows security modification 2 TTPs 6 IoCs

Disabling Security Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	jowlnaou.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	jowlnaou.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1"	jowlnaou.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	jowlnaou.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	jowlnaou.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	jowlnaou.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\RjyQlbmo = "C:\\Users\\Admin\\AppData\\Local\\jdhbbxgx\\rjyqlbmo.exe"	svchost.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	jowlnaou.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 888 set thread context of 1520	888	rvtql1X1e	30
PID 1968 set thread context of 1632	1968	jowlnaou.exe	34
PID 1696 set thread context of 1456	1696	jowlnaou.exe	38

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 42 IoCs

pid	Process
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1456	jowlnaou.exe
1456	jowlnaou.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
460	Process not Found

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeSecurityPrivilege	1520	rvtql1X1e
Token: SeDebugPrivilege	1520	rvtql1X1e
Token: SeSecurityPrivilege	1556	svchost.exe
Token: SeSecurityPrivilege	1812	svchost.exe
Token: SeDebugPrivilege	1812	svchost.exe
Token: SeDebugPrivilege	1812	svchost.exe
Token: SeRestorePrivilege	1812	svchost.exe
Token: SeBackupPrivilege	1812	svchost.exe
Token: SeDebugPrivilege	1812	svchost.exe
Token: SeSecurityPrivilege	1632	jowlnaou.exe
Token: SeSecurityPrivilege	1456	jowlnaou.exe
Token: SeLoadDriverPrivilege	1456	jowlnaou.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
888	rvtql1X1e
1968	jowlnaou.exe
1696	jowlnaou.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1940 wrote to memory of 1712	1940	rundll32.exe	28
PID 1940 wrote to memory of 1712	1940	rundll32.exe	28
PID 1940 wrote to memory of 1712	1940	rundll32.exe	28
PID 1940 wrote to memory of 1712	1940	rundll32.exe	28
PID 1940 wrote to memory of 1712	1940	rundll32.exe	28
PID 1940 wrote to memory of 1712	1940	rundll32.exe	28
PID 1940 wrote to memory of 1712	1940	rundll32.exe	28
PID 1712 wrote to memory of 888	1712	rundll32.exe	29
PID 1712 wrote to memory of 888	1712	rundll32.exe	29
PID 1712 wrote to memory of 888	1712	rundll32.exe	29
PID 1712 wrote to memory of 888	1712	rundll32.exe	29
PID 888 wrote to memory of 1520	888	rvtql1X1e	30
PID 888 wrote to memory of 1520	888	rvtql1X1e	30
PID 888 wrote to memory of 1520	888	rvtql1X1e	30
PID 888 wrote to memory of 1520	888	rvtql1X1e	30
PID 888 wrote to memory of 1520	888	rvtql1X1e	30
PID 888 wrote to memory of 1520	888	rvtql1X1e	30
PID 888 wrote to memory of 1520	888	rvtql1X1e	30
PID 1520 wrote to memory of 1556	1520	rvtql1X1e	31
PID 1520 wrote to memory of 1556	1520	rvtql1X1e	31
PID 1520 wrote to memory of 1556	1520	rvtql1X1e	31
PID 1520 wrote to memory of 1556	1520	rvtql1X1e	31
PID 1520 wrote to memory of 1556	1520	rvtql1X1e	31
PID 1520 wrote to memory of 1556	1520	rvtql1X1e	31
PID 1520 wrote to memory of 1556	1520	rvtql1X1e	31
PID 1520 wrote to memory of 1556	1520	rvtql1X1e	31
PID 1520 wrote to memory of 1556	1520	rvtql1X1e	31
PID 1520 wrote to memory of 1556	1520	rvtql1X1e	31
PID 1520 wrote to memory of 1556	1520	rvtql1X1e	31
PID 1520 wrote to memory of 1812	1520	rvtql1X1e	32
PID 1520 wrote to memory of 1812	1520	rvtql1X1e	32
PID 1520 wrote to memory of 1812	1520	rvtql1X1e	32
PID 1520 wrote to memory of 1812	1520	rvtql1X1e	32
PID 1520 wrote to memory of 1812	1520	rvtql1X1e	32
PID 1520 wrote to memory of 1812	1520	rvtql1X1e	32
PID 1520 wrote to memory of 1812	1520	rvtql1X1e	32
PID 1520 wrote to memory of 1812	1520	rvtql1X1e	32
PID 1520 wrote to memory of 1812	1520	rvtql1X1e	32
PID 1520 wrote to memory of 1812	1520	rvtql1X1e	32
PID 1520 wrote to memory of 1812	1520	rvtql1X1e	32
PID 1520 wrote to memory of 1968	1520	rvtql1X1e	33
PID 1520 wrote to memory of 1968	1520	rvtql1X1e	33
PID 1520 wrote to memory of 1968	1520	rvtql1X1e	33
PID 1520 wrote to memory of 1968	1520	rvtql1X1e	33
PID 1968 wrote to memory of 1632	1968	jowlnaou.exe	34
PID 1968 wrote to memory of 1632	1968	jowlnaou.exe	34
PID 1968 wrote to memory of 1632	1968	jowlnaou.exe	34
PID 1968 wrote to memory of 1632	1968	jowlnaou.exe	34
PID 1968 wrote to memory of 1632	1968	jowlnaou.exe	34
PID 1968 wrote to memory of 1632	1968	jowlnaou.exe	34
PID 1968 wrote to memory of 1632	1968	jowlnaou.exe	34
PID 1632 wrote to memory of 1760	1632	jowlnaou.exe	35
PID 1632 wrote to memory of 1760	1632	jowlnaou.exe	35
PID 1632 wrote to memory of 1760	1632	jowlnaou.exe	35
PID 1632 wrote to memory of 1760	1632	jowlnaou.exe	35
PID 1760 wrote to memory of 1696	1760	cmd.exe	37
PID 1760 wrote to memory of 1696	1760	cmd.exe	37
PID 1760 wrote to memory of 1696	1760	cmd.exe	37
PID 1760 wrote to memory of 1696	1760	cmd.exe	37
PID 1696 wrote to memory of 1456	1696	jowlnaou.exe	38
PID 1696 wrote to memory of 1456	1696	jowlnaou.exe	38
PID 1696 wrote to memory of 1456	1696	jowlnaou.exe	38
PID 1696 wrote to memory of 1456	1696	jowlnaou.exe	38
PID 1696 wrote to memory of 1456	1696	jowlnaou.exe	38

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	jowlnaou.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\12af93d29007b28f8e5cd5db210de0b91e0e84ca318893a79d0efc11f813fb9d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1940
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\12af93d29007b28f8e5cd5db210de0b91e0e84ca318893a79d0efc11f813fb9d.dll,#1
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1712
- - C:\Users\Admin\AppData\Local\Temp\rvtql1X1e
    "rvtql1X1e"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:888
  - - C:\Users\Admin\AppData\Local\Temp\rvtql1X1e
      "rvtql1X1e"
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1520
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        5⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:1556
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        5⤵
        Modifies WinLogon for persistence
        Modifies firewall policy service
        Modifies security service
        UAC bypass
        Windows security bypass
        Drops startup file
        Adds Run key to start application
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1812
    - - C:\Users\Admin\AppData\Local\Temp\jowlnaou.exe
        
        "C:\Users\Admin\AppData\Local\Temp\jowlnaou.exe" elevate
        5⤵
        Executes dropped EXE
        Loads dropped DLL
        Suspicious use of SetThreadContext
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:1968
      - C:\Users\Admin\AppData\Local\Temp\jowlnaou.exe
        
        "C:\Users\Admin\AppData\Local\Temp\jowlnaou.exe" elevate
        6⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1632
        
        C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\jowlnaou.exe"" admin
        7⤵
        Loads dropped DLL
        Suspicious use of WriteProcessMemory
        
        PID:1760
        
        C:\Users\Admin\AppData\Local\Temp\jowlnaou.exe
        
        "C:\Users\Admin\AppData\Local\Temp\jowlnaou.exe" admin
        8⤵
        Executes dropped EXE
        Loads dropped DLL
        Suspicious use of SetThreadContext
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:1696
        
        C:\Users\Admin\AppData\Local\Temp\jowlnaou.exe
        
        "C:\Users\Admin\AppData\Local\Temp\jowlnaou.exe" admin
        9⤵
        Modifies firewall policy service
        Modifies security service
        UAC bypass
        Windows security bypass
        Executes dropped EXE
        Windows security modification
        Checks whether UAC is enabled
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        System policy modification
        
        PID:1456

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

Modify Registry