darkcomet | 53dcf9dd2e82a43ee91e012e59ae8c8f97765b6eee29102c78850b6969d463b9

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\explorer.EXE	explorer.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 456 set thread context of 744	456	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.exe	84
PID 744 set thread context of 2208	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE	88

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/744-3-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/744-5-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/744-8-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/744-9-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/744-10-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/744-12-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/744-11-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/744-16-0x0000000000400000-0x00000000004C5000-memory.dmp	upx

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_1330404a01ed0be4dbb098c6ce929465.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.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	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeSecurityPrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeTakeOwnershipPrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeLoadDriverPrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeSystemProfilePrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeSystemtimePrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeProfSingleProcessPrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeIncBasePriorityPrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeCreatePagefilePrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeBackupPrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeRestorePrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeShutdownPrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeDebugPrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeSystemEnvironmentPrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeChangeNotifyPrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeRemoteShutdownPrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeUndockPrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeManageVolumePrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeImpersonatePrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: SeCreateGlobalPrivilege	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: 33	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: 34	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: 35	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
Token: 36	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
456	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.exe
2208	explorer.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 456 wrote to memory of 744	456	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.exe	84
PID 456 wrote to memory of 744	456	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.exe	84
PID 456 wrote to memory of 744	456	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.exe	84
PID 456 wrote to memory of 744	456	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.exe	84
PID 456 wrote to memory of 744	456	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.exe	84
PID 456 wrote to memory of 744	456	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.exe	84
PID 456 wrote to memory of 744	456	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.exe	84
PID 456 wrote to memory of 744	456	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.exe	84
PID 744 wrote to memory of 2208	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE	88
PID 744 wrote to memory of 2208	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE	88
PID 744 wrote to memory of 2208	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE	88
PID 744 wrote to memory of 2208	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE	88
PID 744 wrote to memory of 2208	744	JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE	88

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:456
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
  JaffaCakes118_1330404a01ed0be4dbb098c6ce929465.EXE
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:744
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2208

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

3

System Information Discovery

3

System Location Discovery

T1614

System Language Discovery