darkcomet | baa8bd77550b16d4f317816b34f11ef434dda02f214f976fdab96fe41692fac1

System Information Discovery

Processes:

winlogon.exe

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

Executes dropped EXE 1 IoCs

Processes:

winlogon.exe

pid	Process
2564	winlogon.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System32 = "\"C:\\Users\\Admin\\AppData\\Roaming\\logon.exe\""	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe

description	pid	Process	procid_target
PID 1308 set thread context of 2564	1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe	86

System Location Discovery: System Language Discovery 1 TTPs 2 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

Processes:

723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exewinlogon.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlogon.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

Processes:

winlogon.exe

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

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

System Information Discovery

Processes:

winlogon.exe

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

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe

pid	Process
1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe
1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe
1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

winlogon.exe

pid	Process
2564	winlogon.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

Processes:

723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exewinlogon.exe

description	pid	Process
Token: SeDebugPrivilege	1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2564	winlogon.exe
Token: SeSecurityPrivilege	2564	winlogon.exe
Token: SeTakeOwnershipPrivilege	2564	winlogon.exe
Token: SeLoadDriverPrivilege	2564	winlogon.exe
Token: SeSystemProfilePrivilege	2564	winlogon.exe
Token: SeSystemtimePrivilege	2564	winlogon.exe
Token: SeProfSingleProcessPrivilege	2564	winlogon.exe
Token: SeIncBasePriorityPrivilege	2564	winlogon.exe
Token: SeCreatePagefilePrivilege	2564	winlogon.exe
Token: SeBackupPrivilege	2564	winlogon.exe
Token: SeRestorePrivilege	2564	winlogon.exe
Token: SeShutdownPrivilege	2564	winlogon.exe
Token: SeDebugPrivilege	2564	winlogon.exe
Token: SeSystemEnvironmentPrivilege	2564	winlogon.exe
Token: SeChangeNotifyPrivilege	2564	winlogon.exe
Token: SeRemoteShutdownPrivilege	2564	winlogon.exe
Token: SeUndockPrivilege	2564	winlogon.exe
Token: SeManageVolumePrivilege	2564	winlogon.exe
Token: SeImpersonatePrivilege	2564	winlogon.exe
Token: SeCreateGlobalPrivilege	2564	winlogon.exe
Token: 33	2564	winlogon.exe
Token: 34	2564	winlogon.exe
Token: 35	2564	winlogon.exe
Token: 36	2564	winlogon.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

winlogon.exe

pid	Process
2564	winlogon.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe

description	pid	Process	procid_target
PID 1308 wrote to memory of 2564	1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe	86
PID 1308 wrote to memory of 2564	1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe	86
PID 1308 wrote to memory of 2564	1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe	86
PID 1308 wrote to memory of 2564	1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe	86
PID 1308 wrote to memory of 2564	1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe	86
PID 1308 wrote to memory of 2564	1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe	86
PID 1308 wrote to memory of 2564	1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe	86
PID 1308 wrote to memory of 2564	1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe	86
PID 1308 wrote to memory of 2564	1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe	86
PID 1308 wrote to memory of 2564	1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe	86
PID 1308 wrote to memory of 2564	1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe	86
PID 1308 wrote to memory of 2564	1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe	86
PID 1308 wrote to memory of 2564	1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe	86
PID 1308 wrote to memory of 2564	1308	723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe	86

C:\Users\Admin\AppData\Local\Temp\723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\723dfeb45dd1904dd38c5859d7d4e1de_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1308
- C:\winlogon.exe
  C:\winlogon.exe
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2564

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

3

System Information Discovery

3

System Location Discovery

T1614

System Language Discovery