darkcomet | 61469ca57f2adc1298c401654f480d1a74216bf198fcc4083c4ecb4c915719a5

Processes:

BUILD.EXE

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Roaming\\Google\\chromemsdcsc.exe"	BUILD.EXE

Modifies firewall policy service 2 TTPs 6 IoCs

evasion

Modify Registry

Windows Service

Processes:

iexplore.exechromemsdcsc.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	iexplore.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	iexplore.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	chromemsdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	chromemsdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	chromemsdcsc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	iexplore.exe

Modifies security service 2 TTPs 2 IoCs

evasion

Modify Registry

Windows Service

Processes:

chromemsdcsc.exeiexplore.exe

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

Windows security bypass 2 TTPs 4 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

chromemsdcsc.exeiexplore.exe

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

Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

4652 attrib.exe
2084 attrib.exe

pid	process
4652	attrib.exe
2084	attrib.exe

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exeBUILD.EXE

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	BUILD.EXE

Executes dropped EXE 3 IoCs

Processes:

BUILD.EXEFC1.6.EXEchromemsdcsc.exe

pid process

3572 BUILD.EXE
4520 FC1.6.EXE
4232 chromemsdcsc.exe

pid	process
3572	BUILD.EXE
4520	FC1.6.EXE
4232	chromemsdcsc.exe

UPX packed file 8 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3980-1-0x0000000000220000-0x0000000000A32000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\BUILD.EXE	upx
behavioral2/memory/3572-14-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3980-25-0x0000000000220000-0x0000000000A32000-memory.dmp	upx
behavioral2/memory/4232-87-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1168-88-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4232-90-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3572-92-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

VMProtect packed file 2 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\FC1.6.EXE	vmprotect
behavioral2/memory/4520-27-0x0000000000400000-0x0000000000BDA000-memory.dmp	vmprotect

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

chromemsdcsc.exe

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

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

Processes:

BUILD.EXEchromemsdcsc.exeiexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\Google\\chromemsdcsc.exe"	BUILD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\Google\\chromemsdcsc.exe"	chromemsdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\Google\\chromemsdcsc.exe"	iexplore.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

FC1.6.EXE

pid process

4520 FC1.6.EXE
Suspicious use of SetThreadContext 1 IoCs

Processes:

chromemsdcsc.exe

description pid process target process

PID 4232 set thread context of 1168 4232 chromemsdcsc.exe iexplore.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Modifies registry class 1 IoCs

Processes:

BUILD.EXE

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ BUILD.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

FC1.6.EXE

pid process

4520 FC1.6.EXE
4520 FC1.6.EXE
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

iexplore.exe

pid process

1168 iexplore.exe

pid	process
4520	FC1.6.EXE

description	pid	process	target process
PID 4232 set thread context of 1168	4232	chromemsdcsc.exe	iexplore.exe

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

pid	process
4520	FC1.6.EXE
4520	FC1.6.EXE

pid	process
1168	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

BUILD.EXEchromemsdcsc.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	3572	BUILD.EXE
Token: SeSecurityPrivilege	3572	BUILD.EXE
Token: SeTakeOwnershipPrivilege	3572	BUILD.EXE
Token: SeLoadDriverPrivilege	3572	BUILD.EXE
Token: SeSystemProfilePrivilege	3572	BUILD.EXE
Token: SeSystemtimePrivilege	3572	BUILD.EXE
Token: SeProfSingleProcessPrivilege	3572	BUILD.EXE
Token: SeIncBasePriorityPrivilege	3572	BUILD.EXE
Token: SeCreatePagefilePrivilege	3572	BUILD.EXE
Token: SeBackupPrivilege	3572	BUILD.EXE
Token: SeRestorePrivilege	3572	BUILD.EXE
Token: SeShutdownPrivilege	3572	BUILD.EXE
Token: SeDebugPrivilege	3572	BUILD.EXE
Token: SeSystemEnvironmentPrivilege	3572	BUILD.EXE
Token: SeChangeNotifyPrivilege	3572	BUILD.EXE
Token: SeRemoteShutdownPrivilege	3572	BUILD.EXE
Token: SeUndockPrivilege	3572	BUILD.EXE
Token: SeManageVolumePrivilege	3572	BUILD.EXE
Token: SeImpersonatePrivilege	3572	BUILD.EXE
Token: SeCreateGlobalPrivilege	3572	BUILD.EXE
Token: 33	3572	BUILD.EXE
Token: 34	3572	BUILD.EXE
Token: 35	3572	BUILD.EXE
Token: 36	3572	BUILD.EXE
Token: SeIncreaseQuotaPrivilege	4232	chromemsdcsc.exe
Token: SeSecurityPrivilege	4232	chromemsdcsc.exe
Token: SeTakeOwnershipPrivilege	4232	chromemsdcsc.exe
Token: SeLoadDriverPrivilege	4232	chromemsdcsc.exe
Token: SeSystemProfilePrivilege	4232	chromemsdcsc.exe
Token: SeSystemtimePrivilege	4232	chromemsdcsc.exe
Token: SeProfSingleProcessPrivilege	4232	chromemsdcsc.exe
Token: SeIncBasePriorityPrivilege	4232	chromemsdcsc.exe
Token: SeCreatePagefilePrivilege	4232	chromemsdcsc.exe
Token: SeBackupPrivilege	4232	chromemsdcsc.exe
Token: SeRestorePrivilege	4232	chromemsdcsc.exe
Token: SeShutdownPrivilege	4232	chromemsdcsc.exe
Token: SeDebugPrivilege	4232	chromemsdcsc.exe
Token: SeSystemEnvironmentPrivilege	4232	chromemsdcsc.exe
Token: SeChangeNotifyPrivilege	4232	chromemsdcsc.exe
Token: SeRemoteShutdownPrivilege	4232	chromemsdcsc.exe
Token: SeUndockPrivilege	4232	chromemsdcsc.exe
Token: SeManageVolumePrivilege	4232	chromemsdcsc.exe
Token: SeImpersonatePrivilege	4232	chromemsdcsc.exe
Token: SeCreateGlobalPrivilege	4232	chromemsdcsc.exe
Token: 33	4232	chromemsdcsc.exe
Token: 34	4232	chromemsdcsc.exe
Token: 35	4232	chromemsdcsc.exe
Token: 36	4232	chromemsdcsc.exe
Token: SeIncreaseQuotaPrivilege	1168	iexplore.exe
Token: SeSecurityPrivilege	1168	iexplore.exe
Token: SeTakeOwnershipPrivilege	1168	iexplore.exe
Token: SeLoadDriverPrivilege	1168	iexplore.exe
Token: SeSystemProfilePrivilege	1168	iexplore.exe
Token: SeSystemtimePrivilege	1168	iexplore.exe
Token: SeProfSingleProcessPrivilege	1168	iexplore.exe
Token: SeIncBasePriorityPrivilege	1168	iexplore.exe
Token: SeCreatePagefilePrivilege	1168	iexplore.exe
Token: SeBackupPrivilege	1168	iexplore.exe
Token: SeRestorePrivilege	1168	iexplore.exe
Token: SeShutdownPrivilege	1168	iexplore.exe
Token: SeDebugPrivilege	1168	iexplore.exe
Token: SeSystemEnvironmentPrivilege	1168	iexplore.exe
Token: SeChangeNotifyPrivilege	1168	iexplore.exe
Token: SeRemoteShutdownPrivilege	1168	iexplore.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

FC1.6.EXEiexplore.exe

pid process

4520 FC1.6.EXE
4520 FC1.6.EXE
1168 iexplore.exe

pid	process
4520	FC1.6.EXE
4520	FC1.6.EXE
1168	iexplore.exe

Suspicious use of WriteProcessMemory 48 IoCs

Processes:

67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exeBUILD.EXEcmd.execmd.exechromemsdcsc.exeiexplore.exe

description	pid	process	target process
PID 3980 wrote to memory of 3572	3980	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe	BUILD.EXE
PID 3980 wrote to memory of 3572	3980	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe	BUILD.EXE
PID 3980 wrote to memory of 3572	3980	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe	BUILD.EXE
PID 3980 wrote to memory of 4520	3980	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe	FC1.6.EXE
PID 3980 wrote to memory of 4520	3980	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe	FC1.6.EXE
PID 3980 wrote to memory of 4520	3980	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe	FC1.6.EXE
PID 3572 wrote to memory of 1144	3572	BUILD.EXE	cmd.exe
PID 3572 wrote to memory of 1144	3572	BUILD.EXE	cmd.exe
PID 3572 wrote to memory of 1144	3572	BUILD.EXE	cmd.exe
PID 3572 wrote to memory of 1204	3572	BUILD.EXE	cmd.exe
PID 3572 wrote to memory of 1204	3572	BUILD.EXE	cmd.exe
PID 3572 wrote to memory of 1204	3572	BUILD.EXE	cmd.exe
PID 1144 wrote to memory of 4652	1144	cmd.exe	attrib.exe
PID 1144 wrote to memory of 4652	1144	cmd.exe	attrib.exe
PID 1144 wrote to memory of 4652	1144	cmd.exe	attrib.exe
PID 1204 wrote to memory of 2084	1204	cmd.exe	attrib.exe
PID 1204 wrote to memory of 2084	1204	cmd.exe	attrib.exe
PID 1204 wrote to memory of 2084	1204	cmd.exe	attrib.exe
PID 3572 wrote to memory of 4232	3572	BUILD.EXE	chromemsdcsc.exe
PID 3572 wrote to memory of 4232	3572	BUILD.EXE	chromemsdcsc.exe
PID 3572 wrote to memory of 4232	3572	BUILD.EXE	chromemsdcsc.exe
PID 4232 wrote to memory of 1168	4232	chromemsdcsc.exe	iexplore.exe
PID 4232 wrote to memory of 1168	4232	chromemsdcsc.exe	iexplore.exe
PID 4232 wrote to memory of 1168	4232	chromemsdcsc.exe	iexplore.exe
PID 4232 wrote to memory of 1168	4232	chromemsdcsc.exe	iexplore.exe
PID 4232 wrote to memory of 1168	4232	chromemsdcsc.exe	iexplore.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe
PID 1168 wrote to memory of 3608	1168	iexplore.exe	notepad.exe

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

Processes:

chromemsdcsc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	chromemsdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	chromemsdcsc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	chromemsdcsc.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

4652 attrib.exe
2084 attrib.exe

pid	process
4652	attrib.exe
2084	attrib.exe

C:\Users\Admin\AppData\Local\Temp\67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3980
- C:\Users\Admin\AppData\Roaming\BUILD.EXE
  "C:\Users\Admin\AppData\Roaming\BUILD.EXE"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3572
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Roaming\BUILD.EXE" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1144
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Roaming\BUILD.EXE" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:4652
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Roaming" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1204
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Roaming" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:2084
- - C:\Users\Admin\AppData\Roaming\Google\chromemsdcsc.exe
    "C:\Users\Admin\AppData\Roaming\Google\chromemsdcsc.exe"
    3⤵
    - Modifies firewall policy service
    - Modifies security service
    - Windows security bypass
    - Executes dropped EXE
    - Windows security modification
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    - System policy modification
    PID:4232
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
      4⤵
      Modifies firewall policy service
      Modifies security service
      Windows security bypass
      Adds Run key to start application
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1168
    - - C:\Windows\SysWOW64\notepad.exe
        
        notepad
        5⤵
        
        PID:3608
- C:\Users\Admin\AppData\Roaming\FC1.6.EXE
  "C:\Users\Admin\AppData\Roaming\FC1.6.EXE"
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:4520

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

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry

T1012

System Information Discovery