xtremerat | 4c083492999f81f02babbfca027d2b484f7bb4e432c2cf17824f42004c5bb50a

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"	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe

Windows security bypass 2 TTPs 1 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe

XtremeRAT
The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.
persistence spyware rat xtremerat
Xtremerat family
xtremerat

Windows security modification 2 TTPs 1 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.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"	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4456 set thread context of 4212	4456	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe	85

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4212-5-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4212-7-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4212-8-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4992-9-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4992-11-0x0000000010000000-0x000000001004D000-memory.dmp	upx

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
396	4992	WerFault.exe	86
4764	4992	WerFault.exe	86

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeBackupPrivilege	4456	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4456	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4456 wrote to memory of 4212	4456	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe	85
PID 4456 wrote to memory of 4212	4456	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe	85
PID 4456 wrote to memory of 4212	4456	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe	85
PID 4456 wrote to memory of 4212	4456	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe	85
PID 4456 wrote to memory of 4212	4456	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe	85
PID 4456 wrote to memory of 4212	4456	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe	85
PID 4456 wrote to memory of 4212	4456	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe	85
PID 4456 wrote to memory of 4212	4456	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe	85
PID 4212 wrote to memory of 4992	4212	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe	86
PID 4212 wrote to memory of 4992	4212	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe	86
PID 4212 wrote to memory of 4992	4212	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe	86
PID 4212 wrote to memory of 4992	4212	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe	86
PID 4212 wrote to memory of 1416	4212	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe	87
PID 4212 wrote to memory of 1416	4212	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe	87
PID 4212 wrote to memory of 1416	4212	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe	87

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"	JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe"
1⤵
- UAC bypass
- Windows security bypass
- Windows security modification
- Checks whether UAC is enabled
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4456
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_616eab44f50aa866fd0ef9a5b118ff44.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4212
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4992
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 480
      4⤵
      Program crash
      PID:396
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 488
      4⤵
      Program crash
      PID:4764
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:1416

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4992 -ip 4992
1⤵
PID:2140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4992 -ip 4992
1⤵
PID:3384

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

3

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

System Location Discovery

T1614

System Language Discovery