ramnit | 67a5d168b2acd6ba367de73f4ced4e7f8597802655eff49518bdd0af0c493788

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
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
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	rundll32mgr.exe

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

UAC bypass 3 TTPs 1 IoCs

Bypass User Account Control

T1548.002

Disable or Modify 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

Disable or Modify Tools

Modify Registry

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

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Policies\system\DisableRegistryTools = "1"	rundll32mgr.exe

Disables Task Manager via registry modification
evasion

Executes dropped EXE 1 IoCs

pid	Process
2376	rundll32mgr.exe

Loads dropped DLL 3 IoCs

pid	Process
2524	rundll32.exe
2524	rundll32.exe
2376	rundll32mgr.exe

Windows security modification 2 TTPs 7 IoCs

Disable or Modify 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 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

UPX packed file 13 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2376-16-0x0000000001DC0000-0x0000000002E4E000-memory.dmp	upx
behavioral1/memory/2376-20-0x0000000001DC0000-0x0000000002E4E000-memory.dmp	upx
behavioral1/memory/2376-23-0x0000000001DC0000-0x0000000002E4E000-memory.dmp	upx
behavioral1/memory/2376-21-0x0000000001DC0000-0x0000000002E4E000-memory.dmp	upx
behavioral1/memory/2376-19-0x0000000001DC0000-0x0000000002E4E000-memory.dmp	upx
behavioral1/memory/2376-17-0x0000000001DC0000-0x0000000002E4E000-memory.dmp	upx
behavioral1/memory/2376-22-0x0000000001DC0000-0x0000000002E4E000-memory.dmp	upx
behavioral1/memory/2376-18-0x0000000001DC0000-0x0000000002E4E000-memory.dmp	upx
behavioral1/memory/2376-24-0x0000000000400000-0x000000000043E000-memory.dmp	upx
behavioral1/memory/2376-15-0x0000000001DC0000-0x0000000002E4E000-memory.dmp	upx
behavioral1/memory/2376-51-0x0000000001DC0000-0x0000000002E4E000-memory.dmp	upx
behavioral1/memory/2376-29-0x0000000001DC0000-0x0000000002E4E000-memory.dmp	upx
behavioral1/memory/2376-27-0x0000000001DC0000-0x0000000002E4E000-memory.dmp	upx

Drops file in Windows directory 1 IoCs

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

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32mgr.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2376	rundll32mgr.exe

Suspicious use of AdjustPrivilegeToken 22 IoCs

description	pid	Process
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe
Token: SeDebugPrivilege	2376	rundll32mgr.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 840 wrote to memory of 2524	840	rundll32.exe	30
PID 840 wrote to memory of 2524	840	rundll32.exe	30
PID 840 wrote to memory of 2524	840	rundll32.exe	30
PID 840 wrote to memory of 2524	840	rundll32.exe	30
PID 840 wrote to memory of 2524	840	rundll32.exe	30
PID 840 wrote to memory of 2524	840	rundll32.exe	30
PID 840 wrote to memory of 2524	840	rundll32.exe	30
PID 2524 wrote to memory of 2376	2524	rundll32.exe	31
PID 2524 wrote to memory of 2376	2524	rundll32.exe	31
PID 2524 wrote to memory of 2376	2524	rundll32.exe	31
PID 2524 wrote to memory of 2376	2524	rundll32.exe	31
PID 2376 wrote to memory of 1084	2376	rundll32mgr.exe	18
PID 2376 wrote to memory of 1156	2376	rundll32mgr.exe	20
PID 2376 wrote to memory of 1192	2376	rundll32mgr.exe	21
PID 2376 wrote to memory of 844	2376	rundll32mgr.exe	23
PID 2376 wrote to memory of 840	2376	rundll32mgr.exe	29
PID 2376 wrote to memory of 2524	2376	rundll32mgr.exe	30
PID 2376 wrote to memory of 2524	2376	rundll32mgr.exe	30

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\taskhost.exe
"taskhost.exe"
1⤵
PID:1084

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1156

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1192
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_60efb02e0618fb6c315d455daa7a92a3.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:840
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_60efb02e0618fb6c315d455daa7a92a3.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2524
  - - 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 Windows directory
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      System policy modification
      PID:2376

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
1⤵
PID:844

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

Modify Registry