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 3 IoCs

evasion

Modify Registry

Windows Service

T1543.003

Processes:

chromemsdcsc.exe

description	ioc	process
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

Modifies security service 2 TTPs 1 IoCs
evasion

Modify Registry
T1112

Windows Service
T1543.003

Processes:

chromemsdcsc.exe

description ioc process

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

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

Windows security bypass 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

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

2708 attrib.exe
2720 attrib.exe
Executes dropped EXE 3 IoCs

Processes:

BUILD.EXEFC1.6.EXEchromemsdcsc.exe

pid process

1632 BUILD.EXE
2984 FC1.6.EXE
2312 chromemsdcsc.exe

pid	process
2708	attrib.exe
2720	attrib.exe

pid	process
1632	BUILD.EXE
2984	FC1.6.EXE
2312	chromemsdcsc.exe

Loads dropped DLL 5 IoCs

Processes:

67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exeBUILD.EXE

pid	process
1728	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe
1728	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe
1728	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe
1632	BUILD.EXE
1632	BUILD.EXE

UPX packed file 12 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1728-0-0x0000000000140000-0x0000000000952000-memory.dmp	upx
\Users\Admin\AppData\Roaming\BUILD.EXE	upx
behavioral1/memory/1728-20-0x0000000000140000-0x0000000000952000-memory.dmp	upx
behavioral1/memory/1632-14-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2312-42-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1632-83-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2312-84-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2312-85-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2312-86-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2312-89-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2312-92-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2312-94-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

VMProtect packed file 2 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

Processes:

resource	yara_rule
\Users\Admin\AppData\Roaming\FC1.6.EXE	vmprotect
behavioral1/memory/2984-31-0x0000000000400000-0x0000000000BDA000-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 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

Processes:

BUILD.EXEchromemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\Google\\chromemsdcsc.exe"	BUILD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\Google\\chromemsdcsc.exe"	chromemsdcsc.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

FC1.6.EXE

pid process

2984 FC1.6.EXE
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

FC1.6.EXE

pid process

2984 FC1.6.EXE
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

chromemsdcsc.exe

pid process

2312 chromemsdcsc.exe

pid	process
2984	FC1.6.EXE

pid	process
2984	FC1.6.EXE

pid	process
2312	chromemsdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

BUILD.EXEchromemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1632	BUILD.EXE
Token: SeSecurityPrivilege	1632	BUILD.EXE
Token: SeTakeOwnershipPrivilege	1632	BUILD.EXE
Token: SeLoadDriverPrivilege	1632	BUILD.EXE
Token: SeSystemProfilePrivilege	1632	BUILD.EXE
Token: SeSystemtimePrivilege	1632	BUILD.EXE
Token: SeProfSingleProcessPrivilege	1632	BUILD.EXE
Token: SeIncBasePriorityPrivilege	1632	BUILD.EXE
Token: SeCreatePagefilePrivilege	1632	BUILD.EXE
Token: SeBackupPrivilege	1632	BUILD.EXE
Token: SeRestorePrivilege	1632	BUILD.EXE
Token: SeShutdownPrivilege	1632	BUILD.EXE
Token: SeDebugPrivilege	1632	BUILD.EXE
Token: SeSystemEnvironmentPrivilege	1632	BUILD.EXE
Token: SeChangeNotifyPrivilege	1632	BUILD.EXE
Token: SeRemoteShutdownPrivilege	1632	BUILD.EXE
Token: SeUndockPrivilege	1632	BUILD.EXE
Token: SeManageVolumePrivilege	1632	BUILD.EXE
Token: SeImpersonatePrivilege	1632	BUILD.EXE
Token: SeCreateGlobalPrivilege	1632	BUILD.EXE
Token: 33	1632	BUILD.EXE
Token: 34	1632	BUILD.EXE
Token: 35	1632	BUILD.EXE
Token: SeIncreaseQuotaPrivilege	2312	chromemsdcsc.exe
Token: SeSecurityPrivilege	2312	chromemsdcsc.exe
Token: SeTakeOwnershipPrivilege	2312	chromemsdcsc.exe
Token: SeLoadDriverPrivilege	2312	chromemsdcsc.exe
Token: SeSystemProfilePrivilege	2312	chromemsdcsc.exe
Token: SeSystemtimePrivilege	2312	chromemsdcsc.exe
Token: SeProfSingleProcessPrivilege	2312	chromemsdcsc.exe
Token: SeIncBasePriorityPrivilege	2312	chromemsdcsc.exe
Token: SeCreatePagefilePrivilege	2312	chromemsdcsc.exe
Token: SeBackupPrivilege	2312	chromemsdcsc.exe
Token: SeRestorePrivilege	2312	chromemsdcsc.exe
Token: SeShutdownPrivilege	2312	chromemsdcsc.exe
Token: SeDebugPrivilege	2312	chromemsdcsc.exe
Token: SeSystemEnvironmentPrivilege	2312	chromemsdcsc.exe
Token: SeChangeNotifyPrivilege	2312	chromemsdcsc.exe
Token: SeRemoteShutdownPrivilege	2312	chromemsdcsc.exe
Token: SeUndockPrivilege	2312	chromemsdcsc.exe
Token: SeManageVolumePrivilege	2312	chromemsdcsc.exe
Token: SeImpersonatePrivilege	2312	chromemsdcsc.exe
Token: SeCreateGlobalPrivilege	2312	chromemsdcsc.exe
Token: 33	2312	chromemsdcsc.exe
Token: 34	2312	chromemsdcsc.exe
Token: 35	2312	chromemsdcsc.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

FC1.6.EXEchromemsdcsc.exe

pid process

2984 FC1.6.EXE
2984 FC1.6.EXE
2312 chromemsdcsc.exe

pid	process
2984	FC1.6.EXE
2984	FC1.6.EXE
2312	chromemsdcsc.exe

Suspicious use of WriteProcessMemory 59 IoCs

Processes:

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

description	pid	process	target process
PID 1728 wrote to memory of 1632	1728	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe	BUILD.EXE
PID 1728 wrote to memory of 1632	1728	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe	BUILD.EXE
PID 1728 wrote to memory of 1632	1728	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe	BUILD.EXE
PID 1728 wrote to memory of 1632	1728	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe	BUILD.EXE
PID 1728 wrote to memory of 2984	1728	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe	FC1.6.EXE
PID 1728 wrote to memory of 2984	1728	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe	FC1.6.EXE
PID 1728 wrote to memory of 2984	1728	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe	FC1.6.EXE
PID 1728 wrote to memory of 2984	1728	67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe	FC1.6.EXE
PID 1632 wrote to memory of 2528	1632	BUILD.EXE	cmd.exe
PID 1632 wrote to memory of 2528	1632	BUILD.EXE	cmd.exe
PID 1632 wrote to memory of 2528	1632	BUILD.EXE	cmd.exe
PID 1632 wrote to memory of 2528	1632	BUILD.EXE	cmd.exe
PID 1632 wrote to memory of 1964	1632	BUILD.EXE	cmd.exe
PID 1632 wrote to memory of 1964	1632	BUILD.EXE	cmd.exe
PID 1632 wrote to memory of 1964	1632	BUILD.EXE	cmd.exe
PID 1632 wrote to memory of 1964	1632	BUILD.EXE	cmd.exe
PID 2528 wrote to memory of 2720	2528	cmd.exe	attrib.exe
PID 2528 wrote to memory of 2720	2528	cmd.exe	attrib.exe
PID 2528 wrote to memory of 2720	2528	cmd.exe	attrib.exe
PID 2528 wrote to memory of 2720	2528	cmd.exe	attrib.exe
PID 1964 wrote to memory of 2708	1964	cmd.exe	attrib.exe
PID 1964 wrote to memory of 2708	1964	cmd.exe	attrib.exe
PID 1964 wrote to memory of 2708	1964	cmd.exe	attrib.exe
PID 1964 wrote to memory of 2708	1964	cmd.exe	attrib.exe
PID 1632 wrote to memory of 2312	1632	BUILD.EXE	chromemsdcsc.exe
PID 1632 wrote to memory of 2312	1632	BUILD.EXE	chromemsdcsc.exe
PID 1632 wrote to memory of 2312	1632	BUILD.EXE	chromemsdcsc.exe
PID 1632 wrote to memory of 2312	1632	BUILD.EXE	chromemsdcsc.exe
PID 2312 wrote to memory of 2424	2312	chromemsdcsc.exe	iexplore.exe
PID 2312 wrote to memory of 2424	2312	chromemsdcsc.exe	iexplore.exe
PID 2312 wrote to memory of 2424	2312	chromemsdcsc.exe	iexplore.exe
PID 2312 wrote to memory of 2424	2312	chromemsdcsc.exe	iexplore.exe
PID 2312 wrote to memory of 2460	2312	chromemsdcsc.exe	explorer.exe
PID 2312 wrote to memory of 2460	2312	chromemsdcsc.exe	explorer.exe
PID 2312 wrote to memory of 2460	2312	chromemsdcsc.exe	explorer.exe
PID 2312 wrote to memory of 2460	2312	chromemsdcsc.exe	explorer.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.exe	notepad.exe
PID 2312 wrote to memory of 2468	2312	chromemsdcsc.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

2720 attrib.exe
2708 attrib.exe

pid	process
2720	attrib.exe
2708	attrib.exe

C:\Users\Admin\AppData\Local\Temp\67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\67e0fbdcc5b4c67ea6020f2a9a3cd66b_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1728

C:\Users\Admin\AppData\Roaming\BUILD.EXE
"C:\Users\Admin\AppData\Roaming\BUILD.EXE"
2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1632

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:2528

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:2720

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:1964

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Roaming" +s +h
4⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2708

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 behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2312

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
4⤵
PID:2424

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
4⤵
PID:2460

C:\Windows\SysWOW64\notepad.exe
notepad
4⤵
PID:2468

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:2984

Network

MITRE ATT&CK Matrix ATT&CK v13

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

T1543.003

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

T1543.003

Defense Evasion

Modify Registry

7

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Discovery

System Information Discovery