ramnit | ebad4de28ec83fe16db7c8b7e37788cd83d010fa44ac169edf60c23d934e42c6

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,c:\\program files (x86)\\microsoft\\watermark.exe"	svchost.exe

Modifies firewall policy service 2 TTPs 3 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"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	rundll32mgr.exe

Ramnit
Ramnit is a versatile family that holds viruses, worms, and Trojans.
trojan spyware stealer worm banker ramnit
Sality
Sality is backdoor written in C++, first discovered in 2003.
backdoor sality

UAC bypass 3 TTPs 1 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"	rundll32mgr.exe

Windows security bypass 2 TTPs 6 IoCs

Disabling Security Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1"	rundll32mgr.exe

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Policies\system\DisableRegistryTools = "1"	rundll32mgr.exe

Disables Task Manager via registry modification
evasion

Executes dropped EXE 2 IoCs

pid	Process
768	rundll32mgr.exe
1772	WaterMark.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/768-61-0x0000000002780000-0x000000000380E000-memory.dmp	upx
behavioral1/memory/768-64-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/768-65-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/768-69-0x0000000000400000-0x0000000000432000-memory.dmp	upx
behavioral1/memory/768-70-0x0000000002780000-0x000000000380E000-memory.dmp	upx
behavioral1/memory/768-75-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1772-91-0x0000000000400000-0x0000000000432000-memory.dmp	upx
behavioral1/memory/1772-92-0x0000000000400000-0x0000000000432000-memory.dmp	upx
behavioral1/memory/1772-156-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1752	rundll32.exe
1752	rundll32.exe
768	rundll32mgr.exe
768	rundll32mgr.exe

Windows security modification 2 TTPs 7 IoCs

Disabling Security Tools

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\Svc	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1"	rundll32mgr.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"	rundll32mgr.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe
File created	C:\Windows\SysWOW64\dmlconf.dat	svchost.exe
File opened for modification	C:\Windows\SysWOW64\dmlconf.dat	svchost.exe

Drops file in Program Files directory 10 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\7-Zip\7-zip.dll	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7z.dll	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7zFM.exe	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7zG.exe	svchost.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px426E.tmp	rundll32mgr.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	svchost.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe
File opened for modification	C:\Program Files\7-Zip\7-zip32.dll	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7z.exe	svchost.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SYSTEM.INI	rundll32mgr.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
768	rundll32mgr.exe
1772	WaterMark.exe
1772	WaterMark.exe
1772	WaterMark.exe
1772	WaterMark.exe
1772	WaterMark.exe
1772	WaterMark.exe
1772	WaterMark.exe
1772	WaterMark.exe
1684	svchost.exe
1684	svchost.exe
1684	svchost.exe
1684	svchost.exe
1684	svchost.exe
1684	svchost.exe
1684	svchost.exe
1684	svchost.exe
1684	svchost.exe
1684	svchost.exe
1684	svchost.exe
1684	svchost.exe
1684	svchost.exe
1684	svchost.exe
1684	svchost.exe
1684	svchost.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	768	rundll32mgr.exe
Token: SeDebugPrivilege	1772	WaterMark.exe
Token: SeDebugPrivilege	1684	svchost.exe
Token: SeDebugPrivilege	1772	WaterMark.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
768	rundll32mgr.exe
1772	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 916 wrote to memory of 1752	916	rundll32.exe	28
PID 916 wrote to memory of 1752	916	rundll32.exe	28
PID 916 wrote to memory of 1752	916	rundll32.exe	28
PID 916 wrote to memory of 1752	916	rundll32.exe	28
PID 916 wrote to memory of 1752	916	rundll32.exe	28
PID 916 wrote to memory of 1752	916	rundll32.exe	28
PID 916 wrote to memory of 1752	916	rundll32.exe	28
PID 1752 wrote to memory of 768	1752	rundll32.exe	29
PID 1752 wrote to memory of 768	1752	rundll32.exe	29
PID 1752 wrote to memory of 768	1752	rundll32.exe	29
PID 1752 wrote to memory of 768	1752	rundll32.exe	29
PID 768 wrote to memory of 1128	768	rundll32mgr.exe	17
PID 768 wrote to memory of 1188	768	rundll32mgr.exe	9
PID 768 wrote to memory of 1216	768	rundll32mgr.exe	16
PID 768 wrote to memory of 916	768	rundll32mgr.exe	20
PID 768 wrote to memory of 1752	768	rundll32mgr.exe	28
PID 768 wrote to memory of 1752	768	rundll32mgr.exe	28
PID 768 wrote to memory of 1772	768	rundll32mgr.exe	30
PID 768 wrote to memory of 1772	768	rundll32mgr.exe	30
PID 768 wrote to memory of 1772	768	rundll32mgr.exe	30
PID 768 wrote to memory of 1772	768	rundll32mgr.exe	30
PID 1772 wrote to memory of 1396	1772	WaterMark.exe	31
PID 1772 wrote to memory of 1396	1772	WaterMark.exe	31
PID 1772 wrote to memory of 1396	1772	WaterMark.exe	31
PID 1772 wrote to memory of 1396	1772	WaterMark.exe	31
PID 1772 wrote to memory of 1396	1772	WaterMark.exe	31
PID 1772 wrote to memory of 1396	1772	WaterMark.exe	31
PID 1772 wrote to memory of 1396	1772	WaterMark.exe	31
PID 1772 wrote to memory of 1396	1772	WaterMark.exe	31
PID 1772 wrote to memory of 1396	1772	WaterMark.exe	31
PID 1772 wrote to memory of 1396	1772	WaterMark.exe	31
PID 1772 wrote to memory of 1684	1772	WaterMark.exe	32
PID 1772 wrote to memory of 1684	1772	WaterMark.exe	32
PID 1772 wrote to memory of 1684	1772	WaterMark.exe	32
PID 1772 wrote to memory of 1684	1772	WaterMark.exe	32
PID 1772 wrote to memory of 1684	1772	WaterMark.exe	32
PID 1772 wrote to memory of 1684	1772	WaterMark.exe	32
PID 1772 wrote to memory of 1684	1772	WaterMark.exe	32
PID 1772 wrote to memory of 1684	1772	WaterMark.exe	32
PID 1772 wrote to memory of 1684	1772	WaterMark.exe	32
PID 1772 wrote to memory of 1684	1772	WaterMark.exe	32
PID 1684 wrote to memory of 260	1684	svchost.exe	7
PID 1684 wrote to memory of 260	1684	svchost.exe	7
PID 1684 wrote to memory of 260	1684	svchost.exe	7
PID 1684 wrote to memory of 260	1684	svchost.exe	7
PID 1684 wrote to memory of 260	1684	svchost.exe	7
PID 1684 wrote to memory of 332	1684	svchost.exe	6
PID 1684 wrote to memory of 332	1684	svchost.exe	6
PID 1684 wrote to memory of 332	1684	svchost.exe	6
PID 1684 wrote to memory of 332	1684	svchost.exe	6
PID 1684 wrote to memory of 332	1684	svchost.exe	6
PID 1684 wrote to memory of 368	1684	svchost.exe	5
PID 1684 wrote to memory of 368	1684	svchost.exe	5
PID 1684 wrote to memory of 368	1684	svchost.exe	5
PID 1684 wrote to memory of 368	1684	svchost.exe	5
PID 1684 wrote to memory of 368	1684	svchost.exe	5
PID 1684 wrote to memory of 384	1684	svchost.exe	4
PID 1684 wrote to memory of 384	1684	svchost.exe	4
PID 1684 wrote to memory of 384	1684	svchost.exe	4
PID 1684 wrote to memory of 384	1684	svchost.exe	4
PID 1684 wrote to memory of 384	1684	svchost.exe	4
PID 1684 wrote to memory of 420	1684	svchost.exe	3
PID 1684 wrote to memory of 420	1684	svchost.exe	3
PID 1684 wrote to memory of 420	1684	svchost.exe	3

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"	rundll32mgr.exe

C:\Windows\system32\lsass.exe
C:\Windows\system32\lsass.exe
1⤵
PID:484

C:\Windows\system32\services.exe
C:\Windows\system32\services.exe
1⤵
PID:468
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1036
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1820
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1128
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1088
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:112
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:296
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:892
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalService
  2⤵
  PID:844
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:816
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
  2⤵
  PID:752
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k RPCSS
  2⤵
  PID:684
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k DcomLaunch
  2⤵
  PID:608

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:420

C:\Windows\system32\csrss.exe
%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
1⤵
PID:384

C:\Windows\system32\wininit.exe
wininit.exe
1⤵
PID:368
- C:\Windows\system32\lsm.exe
  C:\Windows\system32\lsm.exe
  2⤵
  PID:492

C:\Windows\system32\csrss.exe
%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
1⤵
PID:332

C:\Windows\System32\smss.exe
\SystemRoot\System32\smss.exe
1⤵
PID:260

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1188

\\?\C:\Windows\system32\wbem\WMIADAP.EXE
wmiadap.exe /F /T /R
1⤵
PID:1992

C:\Windows\system32\wbem\wmiprvse.exe
C:\Windows\system32\wbem\wmiprvse.exe
1⤵
PID:1960

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1216
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ebad4de28ec83fe16db7c8b7e37788cd83d010fa44ac169edf60c23d934e42c6.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:916
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\ebad4de28ec83fe16db7c8b7e37788cd83d010fa44ac169edf60c23d934e42c6.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of WriteProcessMemory
    PID:1752
  - - C:\Windows\SysWOW64\rundll32mgr.exe
      C:\Windows\SysWOW64\rundll32mgr.exe
      4⤵
      Modifies firewall policy service
      UAC bypass
      Windows security bypass
      Disables RegEdit via registry modification
      Executes dropped EXE
      Loads dropped DLL
      Windows security modification
      Checks whether UAC is enabled
      Drops file in Program Files directory
      Drops file in Windows directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of UnmapMainImage
      Suspicious use of WriteProcessMemory
      System policy modification
      PID:768
    - - C:\Program Files (x86)\Microsoft\WaterMark.exe
        
        "C:\Program Files (x86)\Microsoft\WaterMark.exe"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of UnmapMainImage
        Suspicious use of WriteProcessMemory
        
        PID:1772
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Modifies WinLogon for persistence
        Drops file in System32 directory
        Drops file in Program Files directory
        
        PID:1396
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1684

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Winlogon Helper DLL

T1004

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

Modify Registry