dcrat | 6eec31844ba4b0c2c008ef00c521cb33e110b6754dd14ef4e60b05e633ab66c9

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\ba13f242-3a65-11ef-94cb-d685e2345d05\\WmiPrvSE.exe\""	msContainerweb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\ba13f242-3a65-11ef-94cb-d685e2345d05\\WmiPrvSE.exe\", \"C:\\Program Files (x86)\\Windows Media Player\\OSPPSVC.exe\""	msContainerweb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\ba13f242-3a65-11ef-94cb-d685e2345d05\\WmiPrvSE.exe\", \"C:\\Program Files (x86)\\Windows Media Player\\OSPPSVC.exe\", \"C:\\driverinto\\wininit.exe\""	msContainerweb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\ba13f242-3a65-11ef-94cb-d685e2345d05\\WmiPrvSE.exe\", \"C:\\Program Files (x86)\\Windows Media Player\\OSPPSVC.exe\", \"C:\\driverinto\\wininit.exe\", \"C:\\Recovery\\ba13f242-3a65-11ef-94cb-d685e2345d05\\sppsvc.exe\""	msContainerweb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\ba13f242-3a65-11ef-94cb-d685e2345d05\\WmiPrvSE.exe\", \"C:\\Program Files (x86)\\Windows Media Player\\OSPPSVC.exe\", \"C:\\driverinto\\wininit.exe\", \"C:\\Recovery\\ba13f242-3a65-11ef-94cb-d685e2345d05\\sppsvc.exe\", \"C:\\Program Files\\MSBuild\\explorer.exe\""	msContainerweb.exe

Process spawned unexpected child process 15 IoCs

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

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2764	2752	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2640	2752	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2628	2752	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2840	2752	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2776	2752	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2624	2752	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2772	2752	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2076	2752	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1956	2752	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2372	2752	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2540	2752	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2304	2752	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2492	2752	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1844	2752	schtasks.exe	33
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1632	2752	schtasks.exe	33

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/files/0x0006000000018bd4-9.dat	dcrat
behavioral1/memory/2216-13-0x0000000000E20000-0x0000000001072000-memory.dmp	dcrat
behavioral1/memory/1420-39-0x0000000000100000-0x0000000000352000-memory.dmp	dcrat

Disables Task Manager via registry modification
evasion

Executes dropped EXE 2 IoCs

pid	Process
2216	msContainerweb.exe
1420	WmiPrvSE.exe

Loads dropped DLL 2 IoCs

pid	Process
564	cmd.exe
564	cmd.exe

Adds Run key to start application 2 TTPs 10 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WmiPrvSE = "\"C:\\Recovery\\ba13f242-3a65-11ef-94cb-d685e2345d05\\WmiPrvSE.exe\""	msContainerweb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\OSPPSVC = "\"C:\\Program Files (x86)\\Windows Media Player\\OSPPSVC.exe\""	msContainerweb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\sppsvc = "\"C:\\Recovery\\ba13f242-3a65-11ef-94cb-d685e2345d05\\sppsvc.exe\""	msContainerweb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\WmiPrvSE = "\"C:\\Recovery\\ba13f242-3a65-11ef-94cb-d685e2345d05\\WmiPrvSE.exe\""	msContainerweb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OSPPSVC = "\"C:\\Program Files (x86)\\Windows Media Player\\OSPPSVC.exe\""	msContainerweb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\wininit = "\"C:\\driverinto\\wininit.exe\""	msContainerweb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wininit = "\"C:\\driverinto\\wininit.exe\""	msContainerweb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sppsvc = "\"C:\\Recovery\\ba13f242-3a65-11ef-94cb-d685e2345d05\\sppsvc.exe\""	msContainerweb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\explorer = "\"C:\\Program Files\\MSBuild\\explorer.exe\""	msContainerweb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\explorer = "\"C:\\Program Files\\MSBuild\\explorer.exe\""	msContainerweb.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Windows Media Player\1610b97d3ab4a7	msContainerweb.exe
File created	C:\Program Files\MSBuild\explorer.exe	msContainerweb.exe
File created	C:\Program Files\MSBuild\7a0fd90576e088	msContainerweb.exe
File created	C:\Program Files (x86)\Windows Media Player\OSPPSVC.exe	msContainerweb.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8d7e7c63b0739df784f5db7c063be7b3ef2d1f6b6b71d76e0ed1e5b6592512a6.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

pid	Process
2692	reg.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 15 IoCs

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

persistence execution

Scheduled Task

pid	Process
1632	schtasks.exe
2764	schtasks.exe
2628	schtasks.exe
2776	schtasks.exe
1844	schtasks.exe
2624	schtasks.exe
2076	schtasks.exe
2372	schtasks.exe
2540	schtasks.exe
2304	schtasks.exe
2492	schtasks.exe
2640	schtasks.exe
2840	schtasks.exe
2772	schtasks.exe
1956	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2216	msContainerweb.exe
1420	WmiPrvSE.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2216	msContainerweb.exe
Token: SeDebugPrivilege	1420	WmiPrvSE.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2056 wrote to memory of 840	2056	8d7e7c63b0739df784f5db7c063be7b3ef2d1f6b6b71d76e0ed1e5b6592512a6.exe	29
PID 2056 wrote to memory of 840	2056	8d7e7c63b0739df784f5db7c063be7b3ef2d1f6b6b71d76e0ed1e5b6592512a6.exe	29
PID 2056 wrote to memory of 840	2056	8d7e7c63b0739df784f5db7c063be7b3ef2d1f6b6b71d76e0ed1e5b6592512a6.exe	29
PID 2056 wrote to memory of 840	2056	8d7e7c63b0739df784f5db7c063be7b3ef2d1f6b6b71d76e0ed1e5b6592512a6.exe	29
PID 840 wrote to memory of 564	840	WScript.exe	30
PID 840 wrote to memory of 564	840	WScript.exe	30
PID 840 wrote to memory of 564	840	WScript.exe	30
PID 840 wrote to memory of 564	840	WScript.exe	30
PID 564 wrote to memory of 2216	564	cmd.exe	32
PID 564 wrote to memory of 2216	564	cmd.exe	32
PID 564 wrote to memory of 2216	564	cmd.exe	32
PID 564 wrote to memory of 2216	564	cmd.exe	32
PID 2216 wrote to memory of 1636	2216	msContainerweb.exe	49
PID 2216 wrote to memory of 1636	2216	msContainerweb.exe	49
PID 2216 wrote to memory of 1636	2216	msContainerweb.exe	49
PID 1636 wrote to memory of 1300	1636	cmd.exe	52
PID 1636 wrote to memory of 1300	1636	cmd.exe	52
PID 1636 wrote to memory of 1300	1636	cmd.exe	52
PID 564 wrote to memory of 2692	564	cmd.exe	51
PID 564 wrote to memory of 2692	564	cmd.exe	51
PID 564 wrote to memory of 2692	564	cmd.exe	51
PID 564 wrote to memory of 2692	564	cmd.exe	51
PID 1636 wrote to memory of 1420	1636	cmd.exe	53
PID 1636 wrote to memory of 1420	1636	cmd.exe	53
PID 1636 wrote to memory of 1420	1636	cmd.exe	53

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\8d7e7c63b0739df784f5db7c063be7b3ef2d1f6b6b71d76e0ed1e5b6592512a6.exe
"C:\Users\Admin\AppData\Local\Temp\8d7e7c63b0739df784f5db7c063be7b3ef2d1f6b6b71d76e0ed1e5b6592512a6.exe"
1⤵
- DcRat
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2056
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\driverinto\beEm9RTMhbsv.vbe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:840
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\driverinto\oinlY8qQ6a4Ke7jZpeewRPwKJYS.bat" "
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:564
  - - C:\driverinto\msContainerweb.exe
      "C:\driverinto\msContainerweb.exe"
      4⤵
      Modifies WinLogon for persistence
      Executes dropped EXE
      Adds Run key to start application
      Drops file in Program Files directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2216
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\9B8oJjIX7T.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1636
      - C:\Windows\system32\w32tm.exe
        
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        6⤵
        
        PID:1300
      - C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\WmiPrvSE.exe
        
        "C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\WmiPrvSE.exe"
        6⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1420
  - - 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:2692

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 11 /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\WmiPrvSE.exe'" /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2764

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2640

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 11 /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2628

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows Media Player\OSPPSVC.exe'" /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2840

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Media Player\OSPPSVC.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2776

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows Media Player\OSPPSVC.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2624

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 12 /tr "'C:\driverinto\wininit.exe'" /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2772

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\driverinto\wininit.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2076

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 13 /tr "'C:\driverinto\wininit.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1956

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 7 /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\sppsvc.exe'" /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2372

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\sppsvc.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2540

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 12 /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\sppsvc.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2304

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 13 /tr "'C:\Program Files\MSBuild\explorer.exe'" /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2492

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files\MSBuild\explorer.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1844

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 14 /tr "'C:\Program Files\MSBuild\explorer.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1632

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