xtremerat | abad4bb559ea302eb60cbcc9049a7734ea11f488f4939a3f1c5698c437672459

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe

Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{W88XUBT7-D1G6-OL4R-X87V-785S28C6O86D}	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{W88XUBT7-D1G6-OL4R-X87V-785S28C6O86D}\StubPath = "C:\\Windows\\WinUpdate\\WinUpdate.exe restart"	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3342763580-2723508992-2885672917-1000\Software\Wine	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\WinUpdate\\WinUpdate.exe"	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3342763580-2723508992-2885672917-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\WinUpdate\\WinUpdate.exe"	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5420 set thread context of 6084	5420	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe	88

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/6084-2-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/6084-5-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/6084-6-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/6084-7-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/5764-8-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/6084-11-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/5764-12-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/6084-13-0x0000000010000000-0x000000001004D000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\WinUpdate\WinUpdate.exe	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe
File created	C:\Windows\WinUpdate\WinUpdate.exe	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe
File opened for modification	C:\Windows\WinUpdate\	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe

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
3660	5764	WerFault.exe	89
3328	5764	WerFault.exe	89

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	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5420	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe
6084	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 5420 wrote to memory of 6084	5420	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe	88
PID 5420 wrote to memory of 6084	5420	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe	88
PID 5420 wrote to memory of 6084	5420	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe	88
PID 5420 wrote to memory of 6084	5420	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe	88
PID 5420 wrote to memory of 6084	5420	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe	88
PID 5420 wrote to memory of 6084	5420	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe	88
PID 5420 wrote to memory of 6084	5420	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe	88
PID 5420 wrote to memory of 6084	5420	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe	88
PID 6084 wrote to memory of 5764	6084	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe	89
PID 6084 wrote to memory of 5764	6084	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe	89
PID 6084 wrote to memory of 5764	6084	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe	89
PID 6084 wrote to memory of 5764	6084	JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe	89

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Identifies Wine through registry keys
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5420
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7e298ba89ebc4a47409a7b55d754bd50.exe"
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:6084
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5764
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5764 -s 480
      4⤵
      Program crash
      PID:3660
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5764 -s 488
      4⤵
      Program crash
      PID:3328

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 5764 -ip 5764
1⤵
PID:2872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 5764 -ip 5764
1⤵
PID:3976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion