darkcomet | 7add2e68bc0d0fb4696375741a13de6236c8b60b27413535e9898b3108b436c1

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	vbc.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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	vbc.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1320 set thread context of 5000	1320	96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe	83
PID 5000 set thread context of 4820	5000	vbc.exe	84

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.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

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	5000	vbc.exe
Token: SeSecurityPrivilege	5000	vbc.exe
Token: SeTakeOwnershipPrivilege	5000	vbc.exe
Token: SeLoadDriverPrivilege	5000	vbc.exe
Token: SeSystemProfilePrivilege	5000	vbc.exe
Token: SeSystemtimePrivilege	5000	vbc.exe
Token: SeProfSingleProcessPrivilege	5000	vbc.exe
Token: SeIncBasePriorityPrivilege	5000	vbc.exe
Token: SeCreatePagefilePrivilege	5000	vbc.exe
Token: SeBackupPrivilege	5000	vbc.exe
Token: SeRestorePrivilege	5000	vbc.exe
Token: SeShutdownPrivilege	5000	vbc.exe
Token: SeDebugPrivilege	5000	vbc.exe
Token: SeSystemEnvironmentPrivilege	5000	vbc.exe
Token: SeChangeNotifyPrivilege	5000	vbc.exe
Token: SeRemoteShutdownPrivilege	5000	vbc.exe
Token: SeUndockPrivilege	5000	vbc.exe
Token: SeManageVolumePrivilege	5000	vbc.exe
Token: SeImpersonatePrivilege	5000	vbc.exe
Token: SeCreateGlobalPrivilege	5000	vbc.exe
Token: 33	5000	vbc.exe
Token: 34	5000	vbc.exe
Token: 35	5000	vbc.exe
Token: 36	5000	vbc.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1320 wrote to memory of 5000	1320	96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe	83
PID 1320 wrote to memory of 5000	1320	96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe	83
PID 1320 wrote to memory of 5000	1320	96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe	83
PID 1320 wrote to memory of 5000	1320	96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe	83
PID 1320 wrote to memory of 5000	1320	96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe	83
PID 1320 wrote to memory of 5000	1320	96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe	83
PID 1320 wrote to memory of 5000	1320	96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe	83
PID 1320 wrote to memory of 5000	1320	96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe	83
PID 1320 wrote to memory of 5000	1320	96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe	83
PID 1320 wrote to memory of 5000	1320	96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe	83
PID 1320 wrote to memory of 5000	1320	96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe	83
PID 1320 wrote to memory of 5000	1320	96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe	83
PID 1320 wrote to memory of 5000	1320	96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe	83
PID 1320 wrote to memory of 5000	1320	96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe	83
PID 5000 wrote to memory of 4820	5000	vbc.exe	84
PID 5000 wrote to memory of 4820	5000	vbc.exe	84
PID 5000 wrote to memory of 4820	5000	vbc.exe	84
PID 5000 wrote to memory of 4820	5000	vbc.exe	84
PID 5000 wrote to memory of 4820	5000	vbc.exe	84

C:\Users\Admin\AppData\Local\Temp\96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\96f1323c3ee5ef6206ecf31dbb0db048_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1320
- 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
  - Suspicious use of SetThreadContext
  - 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:5000
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    PID:4820

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

System Information Discovery

3

System Location Discovery

T1614

System Language Discovery