darkcomet | 0e9fb7a333bdd047f8e3e3cee9eb02296bdaf8be408071c964e4cde448005080

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

Processes:

winkey.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	winkey.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	winkey.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "1"	winkey.exe

Modifies security service 2 TTPs 1 IoCs
evasion

Modify Registry
T1112

Windows Service
T1543.003

Processes:

winkey.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" winkey.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	winkey.exe

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

winkey.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	winkey.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	winkey.exe

Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.

Query Registry
T1012

System Information Discovery
T1082

Processes:

winkey.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate winkey.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winkey.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

907691fa850d5ed367c2c27fb5039e6c_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	907691fa850d5ed367c2c27fb5039e6c_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

Processes:

winkey.exewinkey.exe

pid process

3004 winkey.exe
1252 winkey.exe

pid	process
3004	winkey.exe
1252	winkey.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

winkey.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	winkey.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	winkey.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

Processes:

reg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winkey = "C:\\Users\\Admin\\AppData\\Roaming\\winkey.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

winkey.exe

description pid process target process

PID 3004 set thread context of 1252 3004 winkey.exe winkey.exe

description	pid	process	target process
PID 3004 set thread context of 1252	3004	winkey.exe	winkey.exe

UPX packed file 31 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2056-0-0x0000000000400000-0x0000000000788000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\winkey.txt	upx
behavioral2/memory/2056-29-0x0000000000400000-0x0000000000788000-memory.dmp	upx
behavioral2/memory/1252-31-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-34-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-35-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/3004-36-0x0000000000400000-0x0000000000788000-memory.dmp	upx
behavioral2/memory/1252-38-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-40-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-43-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-42-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-41-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-39-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-37-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-44-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-45-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-46-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-47-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-48-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-49-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-50-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-51-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-52-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-53-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-54-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-55-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-56-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-57-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-58-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-59-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1252-60-0x0000000000400000-0x00000000004B6000-memory.dmp	upx

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 5 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:

winkey.exewinkey.exe907691fa850d5ed367c2c27fb5039e6c_JaffaCakes118.execmd.exereg.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winkey.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winkey.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	907691fa850d5ed367c2c27fb5039e6c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Checks processor information in registry 2 TTPs 4 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

winkey.exe

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

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

winkey.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier winkey.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winkey.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

Processes:

winkey.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1252	winkey.exe
Token: SeSecurityPrivilege	1252	winkey.exe
Token: SeTakeOwnershipPrivilege	1252	winkey.exe
Token: SeLoadDriverPrivilege	1252	winkey.exe
Token: SeSystemProfilePrivilege	1252	winkey.exe
Token: SeSystemtimePrivilege	1252	winkey.exe
Token: SeProfSingleProcessPrivilege	1252	winkey.exe
Token: SeIncBasePriorityPrivilege	1252	winkey.exe
Token: SeCreatePagefilePrivilege	1252	winkey.exe
Token: SeBackupPrivilege	1252	winkey.exe
Token: SeRestorePrivilege	1252	winkey.exe
Token: SeShutdownPrivilege	1252	winkey.exe
Token: SeDebugPrivilege	1252	winkey.exe
Token: SeSystemEnvironmentPrivilege	1252	winkey.exe
Token: SeChangeNotifyPrivilege	1252	winkey.exe
Token: SeRemoteShutdownPrivilege	1252	winkey.exe
Token: SeUndockPrivilege	1252	winkey.exe
Token: SeManageVolumePrivilege	1252	winkey.exe
Token: SeImpersonatePrivilege	1252	winkey.exe
Token: SeCreateGlobalPrivilege	1252	winkey.exe
Token: 33	1252	winkey.exe
Token: 34	1252	winkey.exe
Token: 35	1252	winkey.exe
Token: 36	1252	winkey.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

907691fa850d5ed367c2c27fb5039e6c_JaffaCakes118.exewinkey.exewinkey.exe

pid process

2056 907691fa850d5ed367c2c27fb5039e6c_JaffaCakes118.exe
3004 winkey.exe
1252 winkey.exe

pid	process
2056	907691fa850d5ed367c2c27fb5039e6c_JaffaCakes118.exe
3004	winkey.exe
1252	winkey.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

907691fa850d5ed367c2c27fb5039e6c_JaffaCakes118.execmd.exewinkey.exe

description	pid	process	target process
PID 2056 wrote to memory of 2720	2056	907691fa850d5ed367c2c27fb5039e6c_JaffaCakes118.exe	cmd.exe
PID 2056 wrote to memory of 2720	2056	907691fa850d5ed367c2c27fb5039e6c_JaffaCakes118.exe	cmd.exe
PID 2056 wrote to memory of 2720	2056	907691fa850d5ed367c2c27fb5039e6c_JaffaCakes118.exe	cmd.exe
PID 2720 wrote to memory of 3172	2720	cmd.exe	reg.exe
PID 2720 wrote to memory of 3172	2720	cmd.exe	reg.exe
PID 2720 wrote to memory of 3172	2720	cmd.exe	reg.exe
PID 2056 wrote to memory of 3004	2056	907691fa850d5ed367c2c27fb5039e6c_JaffaCakes118.exe	winkey.exe
PID 2056 wrote to memory of 3004	2056	907691fa850d5ed367c2c27fb5039e6c_JaffaCakes118.exe	winkey.exe
PID 2056 wrote to memory of 3004	2056	907691fa850d5ed367c2c27fb5039e6c_JaffaCakes118.exe	winkey.exe
PID 3004 wrote to memory of 1252	3004	winkey.exe	winkey.exe
PID 3004 wrote to memory of 1252	3004	winkey.exe	winkey.exe
PID 3004 wrote to memory of 1252	3004	winkey.exe	winkey.exe
PID 3004 wrote to memory of 1252	3004	winkey.exe	winkey.exe
PID 3004 wrote to memory of 1252	3004	winkey.exe	winkey.exe
PID 3004 wrote to memory of 1252	3004	winkey.exe	winkey.exe
PID 3004 wrote to memory of 1252	3004	winkey.exe	winkey.exe
PID 3004 wrote to memory of 1252	3004	winkey.exe	winkey.exe

C:\Users\Admin\AppData\Local\Temp\907691fa850d5ed367c2c27fb5039e6c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\907691fa850d5ed367c2c27fb5039e6c_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2056
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\ZTore.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2720
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "winkey" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\winkey.exe" /f
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:3172
- C:\Users\Admin\AppData\Roaming\winkey.exe
  "C:\Users\Admin\AppData\Roaming\winkey.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3004
- - C:\Users\Admin\AppData\Roaming\winkey.exe
    C:\Users\Admin\AppData\Roaming\winkey.exe
    3⤵
    - Modifies firewall policy service
    - Modifies security service
    - Windows security bypass
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Windows security modification
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1252

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

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

3

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry

4

T1012

System Information Discovery

5

T1082

System Location Discovery

T1614

System Language Discovery