darkcomet | cb01297ffc07f7264bf275ebb1fd44a6314381787fa965b4aeb7c6b796aa0342

System Information Discovery

persistence privilege_escalation

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

Executes dropped EXE 1 IoCs

pid	Process
2932	winlogon.exe

Loads dropped DLL 1 IoCs

pid	Process
2436	vbc.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\System32 = "\"C:\\Users\\Admin\\AppData\\Roaming\\goodtest.exe\""	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\winlogon = "C:\\Windows\\system32\\winlogon.exe"	vbc.exe

Drops file in System32 directory 3 IoCs

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1600 set thread context of 2436	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	32

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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_4989fcdd0fbffd07c5c1586c5340a30e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.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

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

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2436	vbc.exe
Token: SeSecurityPrivilege	2436	vbc.exe
Token: SeTakeOwnershipPrivilege	2436	vbc.exe
Token: SeLoadDriverPrivilege	2436	vbc.exe
Token: SeSystemProfilePrivilege	2436	vbc.exe
Token: SeSystemtimePrivilege	2436	vbc.exe
Token: SeProfSingleProcessPrivilege	2436	vbc.exe
Token: SeIncBasePriorityPrivilege	2436	vbc.exe
Token: SeCreatePagefilePrivilege	2436	vbc.exe
Token: SeBackupPrivilege	2436	vbc.exe
Token: SeRestorePrivilege	2436	vbc.exe
Token: SeShutdownPrivilege	2436	vbc.exe
Token: SeDebugPrivilege	2436	vbc.exe
Token: SeSystemEnvironmentPrivilege	2436	vbc.exe
Token: SeChangeNotifyPrivilege	2436	vbc.exe
Token: SeRemoteShutdownPrivilege	2436	vbc.exe
Token: SeUndockPrivilege	2436	vbc.exe
Token: SeManageVolumePrivilege	2436	vbc.exe
Token: SeImpersonatePrivilege	2436	vbc.exe
Token: SeCreateGlobalPrivilege	2436	vbc.exe
Token: 33	2436	vbc.exe
Token: 34	2436	vbc.exe
Token: 35	2436	vbc.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1600 wrote to memory of 2596	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	30
PID 1600 wrote to memory of 2596	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	30
PID 1600 wrote to memory of 2596	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	30
PID 1600 wrote to memory of 2596	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	30
PID 1600 wrote to memory of 2436	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	32
PID 1600 wrote to memory of 2436	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	32
PID 1600 wrote to memory of 2436	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	32
PID 1600 wrote to memory of 2436	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	32
PID 1600 wrote to memory of 2436	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	32
PID 1600 wrote to memory of 2436	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	32
PID 1600 wrote to memory of 2436	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	32
PID 1600 wrote to memory of 2436	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	32
PID 1600 wrote to memory of 2436	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	32
PID 1600 wrote to memory of 2436	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	32
PID 1600 wrote to memory of 2436	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	32
PID 1600 wrote to memory of 2436	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	32
PID 1600 wrote to memory of 2436	1600	JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe	32
PID 2436 wrote to memory of 2932	2436	vbc.exe	33
PID 2436 wrote to memory of 2932	2436	vbc.exe	33
PID 2436 wrote to memory of 2932	2436	vbc.exe	33
PID 2436 wrote to memory of 2932	2436	vbc.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4989fcdd0fbffd07c5c1586c5340a30e.exe"
1⤵
- Disables RegEdit via registry modification
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1600
- C:\Windows\SysWOW64\netsh.exe
  "netsh.exe" firewall set opmode disable
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2596
- 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
  - 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:2436
- - C:\Windows\SysWOW64\winlogon.exe
    "C:\Windows\system32\winlogon.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2932

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

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

3

System Information Discovery

3

System Location Discovery

T1614

System Language Discovery