darkcomet | 0985f6dee6b78ecad2d409776ef1fa5a1910355d0c2fd75507361ef42f0e15e0

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	669a8820f42031e50a160933f8562201_JaffaCakes118.exe

Windows security bypass 2 TTPs 1 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	669a8820f42031e50a160933f8562201_JaffaCakes118.exe

Checks BIOS information in registry 2 TTPs 1 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	vbc.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Windows security modification 2 TTPs 1 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	669a8820f42031e50a160933f8562201_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\o25Nno0B5exJh4xlNXYWcKCW6MLeim = "C:\\Windows\\system32\\SoundDriver.exe"	669a8820f42031e50a160933f8562201_JaffaCakes118.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	669a8820f42031e50a160933f8562201_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	669a8820f42031e50a160933f8562201_JaffaCakes118.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\SoundDriver.txt	669a8820f42031e50a160933f8562201_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\SoundDriver.exe	669a8820f42031e50a160933f8562201_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\SoundDriver.exe	669a8820f42031e50a160933f8562201_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4216 set thread context of 3204	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe	86

Checks processor information in registry 2 TTPs 4 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	vbc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	vbc.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	vbc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	vbc.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	vbc.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\Download\CheckExeSignatures = "no"	669a8820f42031e50a160933f8562201_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\Download\RunInvalidSignatures = "1"	669a8820f42031e50a160933f8562201_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe
Token: 33	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3204	vbc.exe
Token: SeSecurityPrivilege	3204	vbc.exe
Token: SeTakeOwnershipPrivilege	3204	vbc.exe
Token: SeLoadDriverPrivilege	3204	vbc.exe
Token: SeSystemProfilePrivilege	3204	vbc.exe
Token: SeSystemtimePrivilege	3204	vbc.exe
Token: SeProfSingleProcessPrivilege	3204	vbc.exe
Token: SeIncBasePriorityPrivilege	3204	vbc.exe
Token: SeCreatePagefilePrivilege	3204	vbc.exe
Token: SeBackupPrivilege	3204	vbc.exe
Token: SeRestorePrivilege	3204	vbc.exe
Token: SeShutdownPrivilege	3204	vbc.exe
Token: SeDebugPrivilege	3204	vbc.exe
Token: SeSystemEnvironmentPrivilege	3204	vbc.exe
Token: SeChangeNotifyPrivilege	3204	vbc.exe
Token: SeRemoteShutdownPrivilege	3204	vbc.exe
Token: SeUndockPrivilege	3204	vbc.exe
Token: SeManageVolumePrivilege	3204	vbc.exe
Token: SeImpersonatePrivilege	3204	vbc.exe
Token: SeCreateGlobalPrivilege	3204	vbc.exe
Token: 33	3204	vbc.exe
Token: 34	3204	vbc.exe
Token: 35	3204	vbc.exe
Token: 36	3204	vbc.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4216 wrote to memory of 3204	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe	86
PID 4216 wrote to memory of 3204	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe	86
PID 4216 wrote to memory of 3204	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe	86
PID 4216 wrote to memory of 3204	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe	86
PID 4216 wrote to memory of 3204	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe	86
PID 4216 wrote to memory of 3204	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe	86
PID 4216 wrote to memory of 3204	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe	86
PID 4216 wrote to memory of 3204	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe	86
PID 4216 wrote to memory of 3204	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe	86
PID 4216 wrote to memory of 3204	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe	86
PID 4216 wrote to memory of 3204	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe	86
PID 4216 wrote to memory of 3204	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe	86
PID 4216 wrote to memory of 3204	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe	86
PID 4216 wrote to memory of 3204	4216	669a8820f42031e50a160933f8562201_JaffaCakes118.exe	86

System policy modification 1 TTPs 5 IoCs

evasion

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Associations\LowRiskFileTypes = ".exe;.dat"	669a8820f42031e50a160933f8562201_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	669a8820f42031e50a160933f8562201_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Attachments	669a8820f42031e50a160933f8562201_JaffaCakes118.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Attachments\SaveZoneInformation = "1"	669a8820f42031e50a160933f8562201_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Associations	669a8820f42031e50a160933f8562201_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\669a8820f42031e50a160933f8562201_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\669a8820f42031e50a160933f8562201_JaffaCakes118.exe"
1⤵
- UAC bypass
- Windows security bypass
- Windows security modification
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4216
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - Checks BIOS information in registry
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:3204

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scripting

T1064

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

3

T1562

Disable or Modify Tools

Modify Registry

Scripting

Credential Access

Discovery

Query Registry

3

System Information Discovery

4