dcrat | 295688858c999f14377a10366d1b74037d6c7e92aa36554bf5b7ce478a6e6205

Processes:

Perfmonitorfontinto.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\PerfLogs\\Admin\\OSPPSVC.exe\", \"C:\\MSOCache\\All Users\\{90140000-001A-0409-0000-0000000FF1CE}-C\\services.exe\", \"C:\\Windows\\System32\\api-ms-win-core-fibers-l1-1-0\\wininit.exe\", \"C:\\Windows\\System32\\mfcm100\\winlogon.exe\", \"C:\\Windows\\de-DE\\dwm.exe\", \"C:\\Users\\All Users\\services.exe\", \"C:\\Windows\\System32\\IPSECSVC\\smss.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\PerfLogs\\Admin\\OSPPSVC.exe\", \"C:\\MSOCache\\All Users\\{90140000-001A-0409-0000-0000000FF1CE}-C\\services.exe\", \"C:\\Windows\\System32\\api-ms-win-core-fibers-l1-1-0\\wininit.exe\", \"C:\\Windows\\System32\\mfcm100\\winlogon.exe\", \"C:\\Windows\\de-DE\\dwm.exe\", \"C:\\Users\\All Users\\services.exe\", \"C:\\Windows\\System32\\IPSECSVC\\smss.exe\", \"C:\\Program Files\\DVD Maker\\de-DE\\WmiPrvSE.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\PerfLogs\\Admin\\OSPPSVC.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\PerfLogs\\Admin\\OSPPSVC.exe\", \"C:\\MSOCache\\All Users\\{90140000-001A-0409-0000-0000000FF1CE}-C\\services.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\PerfLogs\\Admin\\OSPPSVC.exe\", \"C:\\MSOCache\\All Users\\{90140000-001A-0409-0000-0000000FF1CE}-C\\services.exe\", \"C:\\Windows\\System32\\api-ms-win-core-fibers-l1-1-0\\wininit.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\PerfLogs\\Admin\\OSPPSVC.exe\", \"C:\\MSOCache\\All Users\\{90140000-001A-0409-0000-0000000FF1CE}-C\\services.exe\", \"C:\\Windows\\System32\\api-ms-win-core-fibers-l1-1-0\\wininit.exe\", \"C:\\Windows\\System32\\mfcm100\\winlogon.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\PerfLogs\\Admin\\OSPPSVC.exe\", \"C:\\MSOCache\\All Users\\{90140000-001A-0409-0000-0000000FF1CE}-C\\services.exe\", \"C:\\Windows\\System32\\api-ms-win-core-fibers-l1-1-0\\wininit.exe\", \"C:\\Windows\\System32\\mfcm100\\winlogon.exe\", \"C:\\Windows\\de-DE\\dwm.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\PerfLogs\\Admin\\OSPPSVC.exe\", \"C:\\MSOCache\\All Users\\{90140000-001A-0409-0000-0000000FF1CE}-C\\services.exe\", \"C:\\Windows\\System32\\api-ms-win-core-fibers-l1-1-0\\wininit.exe\", \"C:\\Windows\\System32\\mfcm100\\winlogon.exe\", \"C:\\Windows\\de-DE\\dwm.exe\", \"C:\\Users\\All Users\\services.exe\""	Perfmonitorfontinto.exe

Process spawned unexpected child process 8 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

schtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exe

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2888	2840	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2644	2840	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2660	2840	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2656	2840	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2104	2840	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1048	2840	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	760	2840	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	844	2840	schtasks.exe	35

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

Processes:

resource	yara_rule
behavioral1/files/0x0007000000016d58-9.dat	dcrat
behavioral1/memory/2748-13-0x0000000000320000-0x000000000052E000-memory.dmp	dcrat
behavioral1/memory/1664-36-0x0000000000E90000-0x000000000109E000-memory.dmp	dcrat

Disables Task Manager via registry modification
evasion

Executes dropped EXE 2 IoCs

Processes:

Perfmonitorfontinto.exeservices.exe

pid	Process
2748	Perfmonitorfontinto.exe
1664	services.exe

Loads dropped DLL 2 IoCs

Processes:

cmd.exe

pid	Process
2368	cmd.exe
2368	cmd.exe

Adds Run key to start application 2 TTPs 16 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

Processes:

Perfmonitorfontinto.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dwm = "\"C:\\Windows\\de-DE\\dwm.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\services = "\"C:\\Users\\All Users\\services.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\services = "\"C:\\Users\\All Users\\services.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\services = "\"C:\\MSOCache\\All Users\\{90140000-001A-0409-0000-0000000FF1CE}-C\\services.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wininit = "\"C:\\Windows\\System32\\api-ms-win-core-fibers-l1-1-0\\wininit.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "\"C:\\Windows\\System32\\mfcm100\\winlogon.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\smss = "\"C:\\Windows\\System32\\IPSECSVC\\smss.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smss = "\"C:\\Windows\\System32\\IPSECSVC\\smss.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WmiPrvSE = "\"C:\\Program Files\\DVD Maker\\de-DE\\WmiPrvSE.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OSPPSVC = "\"C:\\PerfLogs\\Admin\\OSPPSVC.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\wininit = "\"C:\\Windows\\System32\\api-ms-win-core-fibers-l1-1-0\\wininit.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\WmiPrvSE = "\"C:\\Program Files\\DVD Maker\\de-DE\\WmiPrvSE.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\winlogon = "\"C:\\Windows\\System32\\mfcm100\\winlogon.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\dwm = "\"C:\\Windows\\de-DE\\dwm.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\OSPPSVC = "\"C:\\PerfLogs\\Admin\\OSPPSVC.exe\""	Perfmonitorfontinto.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\services = "\"C:\\MSOCache\\All Users\\{90140000-001A-0409-0000-0000000FF1CE}-C\\services.exe\""	Perfmonitorfontinto.exe

Drops file in System32 directory 6 IoCs

Processes:

Perfmonitorfontinto.exe

description	ioc	Process
File created	C:\Windows\System32\IPSECSVC\smss.exe	Perfmonitorfontinto.exe
File created	C:\Windows\System32\IPSECSVC\69ddcba757bf72f7d36c464c71f42baab150b2b9	Perfmonitorfontinto.exe
File created	C:\Windows\System32\api-ms-win-core-fibers-l1-1-0\wininit.exe	Perfmonitorfontinto.exe
File created	C:\Windows\System32\api-ms-win-core-fibers-l1-1-0\560854153607923c4c5f107085a7db67be01f252	Perfmonitorfontinto.exe
File created	C:\Windows\System32\mfcm100\winlogon.exe	Perfmonitorfontinto.exe
File created	C:\Windows\System32\mfcm100\cc11b995f2a76da408ea6a601e682e64743153ad	Perfmonitorfontinto.exe

Drops file in Program Files directory 2 IoCs

Processes:

Perfmonitorfontinto.exe

description	ioc	Process
File created	C:\Program Files\DVD Maker\de-DE\WmiPrvSE.exe	Perfmonitorfontinto.exe
File created	C:\Program Files\DVD Maker\de-DE\24dbde2999530ef5fd907494bc374d663924116c	Perfmonitorfontinto.exe

Drops file in Windows directory 2 IoCs

Processes:

Perfmonitorfontinto.exe

description	ioc	Process
File created	C:\Windows\de-DE\dwm.exe	Perfmonitorfontinto.exe
File created	C:\Windows\de-DE\6cb0b6c459d5d3455a3da700e713f2e2529862ff	Perfmonitorfontinto.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 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

Processes:

295688858c999f14377a10366d1b74037d6c7e92aa36554bf5b7ce478a6e6205.exeWScript.execmd.exereg.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	295688858c999f14377a10366d1b74037d6c7e92aa36554bf5b7ce478a6e6205.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

Processes:

reg.exe

pid	Process
1808	reg.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 8 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

Processes:

schtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exe

pid	Process
760	schtasks.exe
844	schtasks.exe
2888	schtasks.exe
2644	schtasks.exe
2660	schtasks.exe
2656	schtasks.exe
2104	schtasks.exe
1048	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

Perfmonitorfontinto.exeservices.exe

pid	Process
2748	Perfmonitorfontinto.exe
2748	Perfmonitorfontinto.exe
2748	Perfmonitorfontinto.exe
1664	services.exe
1664	services.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Perfmonitorfontinto.exeservices.exe

description	pid	Process
Token: SeDebugPrivilege	2748	Perfmonitorfontinto.exe
Token: SeDebugPrivilege	1664	services.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

295688858c999f14377a10366d1b74037d6c7e92aa36554bf5b7ce478a6e6205.exeWScript.execmd.exePerfmonitorfontinto.exe

description	pid	Process	procid_target
PID 2936 wrote to memory of 1884	2936	295688858c999f14377a10366d1b74037d6c7e92aa36554bf5b7ce478a6e6205.exe	30
PID 2936 wrote to memory of 1884	2936	295688858c999f14377a10366d1b74037d6c7e92aa36554bf5b7ce478a6e6205.exe	30
PID 2936 wrote to memory of 1884	2936	295688858c999f14377a10366d1b74037d6c7e92aa36554bf5b7ce478a6e6205.exe	30
PID 2936 wrote to memory of 1884	2936	295688858c999f14377a10366d1b74037d6c7e92aa36554bf5b7ce478a6e6205.exe	30
PID 1884 wrote to memory of 2368	1884	WScript.exe	32
PID 1884 wrote to memory of 2368	1884	WScript.exe	32
PID 1884 wrote to memory of 2368	1884	WScript.exe	32
PID 1884 wrote to memory of 2368	1884	WScript.exe	32
PID 2368 wrote to memory of 2748	2368	cmd.exe	34
PID 2368 wrote to memory of 2748	2368	cmd.exe	34
PID 2368 wrote to memory of 2748	2368	cmd.exe	34
PID 2368 wrote to memory of 2748	2368	cmd.exe	34
PID 2748 wrote to memory of 1664	2748	Perfmonitorfontinto.exe	44
PID 2748 wrote to memory of 1664	2748	Perfmonitorfontinto.exe	44
PID 2748 wrote to memory of 1664	2748	Perfmonitorfontinto.exe	44
PID 2368 wrote to memory of 1808	2368	cmd.exe	45
PID 2368 wrote to memory of 1808	2368	cmd.exe	45
PID 2368 wrote to memory of 1808	2368	cmd.exe	45
PID 2368 wrote to memory of 1808	2368	cmd.exe	45

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\295688858c999f14377a10366d1b74037d6c7e92aa36554bf5b7ce478a6e6205.exe
"C:\Users\Admin\AppData\Local\Temp\295688858c999f14377a10366d1b74037d6c7e92aa36554bf5b7ce478a6e6205.exe"
1⤵
- DcRat
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2936
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Perfmonitor\lNQQOstPqxiFMmsYvmB.vbe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1884
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Perfmonitor\O0mpFdbBjdm7srZfGtzhIPYG.bat" "
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2368
  - - C:\Perfmonitor\Perfmonitorfontinto.exe
      "C:\Perfmonitor\Perfmonitorfontinto.exe"
      4⤵
      Modifies WinLogon for persistence
      Executes dropped EXE
      Adds Run key to start application
      Drops file in System32 directory
      Drops file in Program Files directory
      Drops file in Windows directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2748
    - - C:\Users\All Users\services.exe
        
        "C:\Users\All Users\services.exe"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1664
  - - C:\Windows\SysWOW64\reg.exe
      reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
      4⤵
      System Location Discovery: System Language Discovery
      Modifies registry key
      PID:1808

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\PerfLogs\Admin\OSPPSVC.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2888

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\services.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2644

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Windows\System32\api-ms-win-core-fibers-l1-1-0\wininit.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2660

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\System32\mfcm100\winlogon.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2656

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Windows\de-DE\dwm.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2104

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Users\All Users\services.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1048

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Windows\System32\IPSECSVC\smss.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:760

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Program Files\DVD Maker\de-DE\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:844

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Modify Registry

3

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery