darkcomet | 348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5

System Information Discovery

Processes:

348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid	Process
2812	svchost.exe

Loads dropped DLL 1 IoCs

Processes:

348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe

pid	Process
2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Windows\\system32\\svchost.exe"	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe

Drops file in System32 directory 3 IoCs

Processes:

348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe

description	ioc	Process
File created	C:\Windows\SysWOW64\svchost.exe	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
File opened for modification	C:\Windows\SysWOW64\svchost.exe	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
File opened for modification	C:\Windows\SysWOW64\	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 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:

348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.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:

348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

System Information Discovery

Processes:

348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

Processes:

348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeSecurityPrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeTakeOwnershipPrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeLoadDriverPrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeSystemProfilePrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeSystemtimePrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeProfSingleProcessPrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeIncBasePriorityPrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeCreatePagefilePrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeBackupPrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeRestorePrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeShutdownPrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeDebugPrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeSystemEnvironmentPrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeChangeNotifyPrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeRemoteShutdownPrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeUndockPrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeManageVolumePrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeImpersonatePrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: SeCreateGlobalPrivilege	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: 33	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: 34	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
Token: 35	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe

description	pid	Process	procid_target
PID 2752 wrote to memory of 2812	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe	30
PID 2752 wrote to memory of 2812	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe	30
PID 2752 wrote to memory of 2812	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe	30
PID 2752 wrote to memory of 2812	2752	348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe	30

C:\Users\Admin\AppData\Local\Temp\348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe
"C:\Users\Admin\AppData\Local\Temp\348273c4ea7ac482ccbf23efd05386631ea2b2fb0569b6bb72b5a8b43af1bab5N.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- 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:2752
- C:\Windows\SysWOW64\svchost.exe
  "C:\Windows\system32\svchost.exe"
  2⤵
  - Executes dropped EXE
  PID:2812

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

4

System Location Discovery

T1614

System Language Discovery