ramnit | 08e9067aa07ac4de151ec8ce01734ccd3956d69da45bc6c34cc0b4c6483b0d9c

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

T1562.001

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

T1562.001

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

Executes dropped EXE 2 IoCs

pid	Process
1396	rundll32mgr.exe
2816	WaterMark.exe

Loads dropped DLL 4 IoCs

pid	Process
2300	rundll32.exe
2300	rundll32.exe
1396	rundll32mgr.exe
1396	rundll32mgr.exe

Windows security modification 2 TTPs 7 IoCs

Disable or Modify Tools

T1562.001

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 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1396-17-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1396-13-0x0000000002960000-0x00000000039EE000-memory.dmp	upx
behavioral1/memory/1396-19-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1396-18-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1396-29-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1396-16-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1396-15-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1396-14-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\pxC9E4.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	rundll32mgr.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WaterMark.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1396	rundll32mgr.exe
2816	WaterMark.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2160 wrote to memory of 2300	2160	rundll32.exe	30
PID 2160 wrote to memory of 2300	2160	rundll32.exe	30
PID 2160 wrote to memory of 2300	2160	rundll32.exe	30
PID 2160 wrote to memory of 2300	2160	rundll32.exe	30
PID 2160 wrote to memory of 2300	2160	rundll32.exe	30
PID 2160 wrote to memory of 2300	2160	rundll32.exe	30
PID 2160 wrote to memory of 2300	2160	rundll32.exe	30
PID 2300 wrote to memory of 1396	2300	rundll32.exe	31
PID 2300 wrote to memory of 1396	2300	rundll32.exe	31
PID 2300 wrote to memory of 1396	2300	rundll32.exe	31
PID 2300 wrote to memory of 1396	2300	rundll32.exe	31
PID 1396 wrote to memory of 2816	1396	rundll32mgr.exe	33
PID 1396 wrote to memory of 2816	1396	rundll32mgr.exe	33
PID 1396 wrote to memory of 2816	1396	rundll32mgr.exe	33
PID 1396 wrote to memory of 2816	1396	rundll32mgr.exe	33

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\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\08e9067aa07ac4de151ec8ce01734ccd3956d69da45bc6c34cc0b4c6483b0d9c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2160
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\08e9067aa07ac4de151ec8ce01734ccd3956d69da45bc6c34cc0b4c6483b0d9c.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2300
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Modifies firewall policy service
    - UAC bypass
    - Windows security bypass
    - Executes dropped EXE
    - Loads dropped DLL
    - Windows security modification
    - Checks whether UAC is enabled
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of UnmapMainImage
    - Suspicious use of WriteProcessMemory
    - System policy modification
    PID:1396
  - - C:\Program Files (x86)\Microsoft\WaterMark.exe
      "C:\Program Files (x86)\Microsoft\WaterMark.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of UnmapMainImage
      PID:2816

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

4

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery