darkcomet | dc9a1a03eec640f6c37d1c81a4f79ee7b9c9ae7bf56efd0fa61bd1ec3cdd5a60

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

Windows Service

T1543.003

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

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.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

pid	Process
1636	attrib.exe
2856	attrib.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

BIOS 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\SystemBiosDate	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	msdcsc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	msdcsc.exe

Executes dropped EXE 1 IoCs

pid	Process
2888	msdcsc.exe

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1520-3-0x0000000000270000-0x0000000000281000-memory.dmp	upx
behavioral1/memory/1520-2-0x0000000000270000-0x0000000000281000-memory.dmp	upx
behavioral1/memory/1520-1-0x0000000000270000-0x0000000000281000-memory.dmp	upx
behavioral1/memory/1520-0-0x0000000000270000-0x0000000000281000-memory.dmp	upx
behavioral1/memory/1520-4-0x00000000357D0000-0x0000000035808000-memory.dmp	upx
behavioral1/memory/1520-37-0x0000000000270000-0x0000000000281000-memory.dmp	upx
behavioral1/memory/2888-44-0x0000000000240000-0x0000000000251000-memory.dmp	upx
behavioral1/memory/2888-43-0x0000000000240000-0x0000000000251000-memory.dmp	upx
behavioral1/memory/2888-42-0x0000000000240000-0x0000000000251000-memory.dmp	upx
behavioral1/memory/2888-41-0x0000000000240000-0x0000000000251000-memory.dmp	upx
behavioral1/memory/2888-45-0x00000000371C0000-0x00000000371F8000-memory.dmp	upx

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 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	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Checks processor information in registry 2 TTPs 14 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	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Key value enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	msdcsc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	msdcsc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\FeatureSet	msdcsc.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	msdcsc.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	msdcsc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	msdcsc.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Key value enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\FeatureSet	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	msdcsc.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	msdcsc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2888	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeSecurityPrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeBackupPrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeRestorePrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeShutdownPrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeDebugPrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeUndockPrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: 33	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: 34	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: 35	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2888	msdcsc.exe
Token: SeSecurityPrivilege	2888	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2888	msdcsc.exe
Token: SeLoadDriverPrivilege	2888	msdcsc.exe
Token: SeSystemProfilePrivilege	2888	msdcsc.exe
Token: SeSystemtimePrivilege	2888	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2888	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2888	msdcsc.exe
Token: SeCreatePagefilePrivilege	2888	msdcsc.exe
Token: SeBackupPrivilege	2888	msdcsc.exe
Token: SeRestorePrivilege	2888	msdcsc.exe
Token: SeShutdownPrivilege	2888	msdcsc.exe
Token: SeDebugPrivilege	2888	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2888	msdcsc.exe
Token: SeChangeNotifyPrivilege	2888	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2888	msdcsc.exe
Token: SeUndockPrivilege	2888	msdcsc.exe
Token: SeManageVolumePrivilege	2888	msdcsc.exe
Token: SeImpersonatePrivilege	2888	msdcsc.exe
Token: SeCreateGlobalPrivilege	2888	msdcsc.exe
Token: 33	2888	msdcsc.exe
Token: 34	2888	msdcsc.exe
Token: 35	2888	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2888	msdcsc.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1520 wrote to memory of 2964	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe	30
PID 1520 wrote to memory of 2964	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe	30
PID 1520 wrote to memory of 2964	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe	30
PID 1520 wrote to memory of 2964	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe	30
PID 1520 wrote to memory of 2144	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe	31
PID 1520 wrote to memory of 2144	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe	31
PID 1520 wrote to memory of 2144	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe	31
PID 1520 wrote to memory of 2144	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe	31
PID 2964 wrote to memory of 2856	2964	cmd.exe	34
PID 2964 wrote to memory of 2856	2964	cmd.exe	34
PID 2964 wrote to memory of 2856	2964	cmd.exe	34
PID 2964 wrote to memory of 2856	2964	cmd.exe	34
PID 2144 wrote to memory of 1636	2144	cmd.exe	35
PID 2144 wrote to memory of 1636	2144	cmd.exe	35
PID 2144 wrote to memory of 1636	2144	cmd.exe	35
PID 2144 wrote to memory of 1636	2144	cmd.exe	35
PID 1520 wrote to memory of 2888	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe	36
PID 1520 wrote to memory of 2888	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe	36
PID 1520 wrote to memory of 2888	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe	36
PID 1520 wrote to memory of 2888	1520	d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe	36
PID 2888 wrote to memory of 1904	2888	msdcsc.exe	37
PID 2888 wrote to memory of 1904	2888	msdcsc.exe	37
PID 2888 wrote to memory of 1904	2888	msdcsc.exe	37
PID 2888 wrote to memory of 1904	2888	msdcsc.exe	37
PID 2888 wrote to memory of 2988	2888	msdcsc.exe	38
PID 2888 wrote to memory of 2988	2888	msdcsc.exe	38
PID 2888 wrote to memory of 2988	2888	msdcsc.exe	38
PID 2888 wrote to memory of 2988	2888	msdcsc.exe	38

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1636	attrib.exe
2856	attrib.exe

C:\Users\Admin\AppData\Local\Temp\d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d3791e026f6c10ac0054f637a95f67fb_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Adds Run key to start application
- 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:1520
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2964
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2856
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2144
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:1636
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Modifies security service
  - Windows security bypass
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Windows security modification
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2888
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    PID:1904
- - C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    3⤵
    PID:2988

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

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery