darkcomet | c6fda4c45f1df9cbcc6054256dbe73fd89a332fc8ff8552347c46a6dc364da97

System Information Discovery

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

Executes dropped EXE 1 IoCs

pid	Process
3716	winupdate.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Windupdt\\winupdate.exe"	vbc.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Windupdt\winupdate.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\Windupdt\winupdate.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\Windupdt\	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 224 set thread context of 2036	224	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	83

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3016	PING.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	vbc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	vbc.exe
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

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 registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	vbc.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3016	PING.EXE

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2036	vbc.exe
Token: SeSecurityPrivilege	2036	vbc.exe
Token: SeTakeOwnershipPrivilege	2036	vbc.exe
Token: SeLoadDriverPrivilege	2036	vbc.exe
Token: SeSystemProfilePrivilege	2036	vbc.exe
Token: SeSystemtimePrivilege	2036	vbc.exe
Token: SeProfSingleProcessPrivilege	2036	vbc.exe
Token: SeIncBasePriorityPrivilege	2036	vbc.exe
Token: SeCreatePagefilePrivilege	2036	vbc.exe
Token: SeBackupPrivilege	2036	vbc.exe
Token: SeRestorePrivilege	2036	vbc.exe
Token: SeShutdownPrivilege	2036	vbc.exe
Token: SeDebugPrivilege	2036	vbc.exe
Token: SeSystemEnvironmentPrivilege	2036	vbc.exe
Token: SeChangeNotifyPrivilege	2036	vbc.exe
Token: SeRemoteShutdownPrivilege	2036	vbc.exe
Token: SeUndockPrivilege	2036	vbc.exe
Token: SeManageVolumePrivilege	2036	vbc.exe
Token: SeImpersonatePrivilege	2036	vbc.exe
Token: SeCreateGlobalPrivilege	2036	vbc.exe
Token: 33	2036	vbc.exe
Token: 34	2036	vbc.exe
Token: 35	2036	vbc.exe
Token: 36	2036	vbc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 224 wrote to memory of 2036	224	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	83
PID 224 wrote to memory of 2036	224	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	83
PID 224 wrote to memory of 2036	224	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	83
PID 224 wrote to memory of 2036	224	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	83
PID 224 wrote to memory of 2036	224	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	83
PID 224 wrote to memory of 2036	224	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	83
PID 224 wrote to memory of 2036	224	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	83
PID 224 wrote to memory of 2036	224	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	83
PID 224 wrote to memory of 2036	224	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	83
PID 224 wrote to memory of 2036	224	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	83
PID 224 wrote to memory of 2036	224	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	83
PID 224 wrote to memory of 2036	224	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	83
PID 224 wrote to memory of 2036	224	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	83
PID 224 wrote to memory of 2036	224	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	83
PID 2036 wrote to memory of 3716	2036	vbc.exe	84
PID 2036 wrote to memory of 3716	2036	vbc.exe	84
PID 2036 wrote to memory of 3716	2036	vbc.exe	84
PID 2036 wrote to memory of 1516	2036	vbc.exe	86
PID 2036 wrote to memory of 1516	2036	vbc.exe	86
PID 2036 wrote to memory of 1516	2036	vbc.exe	86
PID 1516 wrote to memory of 3016	1516	cmd.exe	88
PID 1516 wrote to memory of 3016	1516	cmd.exe	88
PID 1516 wrote to memory of 3016	1516	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:224
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - 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
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2036
- - C:\Windows\SysWOW64\Windupdt\winupdate.exe
    "C:\Windows\system32\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3716
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\_dcsc_.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1516
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 2
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:3016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

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

Remote System Discovery

T1018

System Information Discovery

3

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery