dcrat | 95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27

Analysis

max time kernel
119s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25/01/2025, 07:38

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General

Target

95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Size

2.2MB
MD5

ba5102fee3b188bb6ac65068ec18d95d
SHA1

59a111a9ab515d690995496967de195eb23b097c
SHA256

95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27
SHA512

2dfe580f3e278431fef83d2c33c19e8af33ba958a7d6abc4cce571b202a64a06d7c54fda635b9b649d6bb6090ef0370063cf35cd5e6688dc435db6e6fe07cc37
SSDEEP

49152:ssSHlG56vO0T3/Nh/ptuw/C3TqGaDxr1NcWTMUvifC:sLlK6d3/Nh/bV/Oq3Dxp2RUGC

Score

10^/10

dcrat defense_evasion infostealer persistence rat trojan

Malware Config

Signatures

DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat
Dcrat family
dcrat

Modifies WinLogon for persistence 2 TTPs 4 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Admin\\Links\\services.exe\""	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Admin\\Links\\services.exe\", \"C:\\Program Files (x86)\\MSBuild\\Microsoft\\spoolsv.exe\""	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Admin\\Links\\services.exe\", \"C:\\Program Files (x86)\\MSBuild\\Microsoft\\spoolsv.exe\", \"C:\\MSOCache\\All Users\\{90140000-0115-0409-0000-0000000FF1CE}-C\\1033\\dllhost.exe\""	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Admin\\Links\\services.exe\", \"C:\\Program Files (x86)\\MSBuild\\Microsoft\\spoolsv.exe\", \"C:\\MSOCache\\All Users\\{90140000-0115-0409-0000-0000000FF1CE}-C\\1033\\dllhost.exe\", \"C:\\Program Files (x86)\\Windows Mail\\sppsvc.exe\""	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe

Process spawned unexpected child process 12 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	2712	2720	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3008	2720	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2956	2720	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2760	2720	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2796	2720	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2628	2720	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2252	2720	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2456	2720	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1788	2720	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1308	2720	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	748	2720	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1480	2720	schtasks.exe	30

UAC bypass 3 TTPs 12 IoCs

defense_evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	dllhost.exe

DCRat payload 6 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/2524-1-0x0000000000BA0000-0x0000000000DCE000-memory.dmp	dcrat
behavioral1/files/0x0005000000019515-41.dat	dcrat
behavioral1/files/0x0005000000019aea-51.dat	dcrat
behavioral1/memory/1760-97-0x0000000000D10000-0x0000000000F3E000-memory.dmp	dcrat
behavioral1/files/0x000600000001933e-96.dat	dcrat
behavioral1/memory/1636-110-0x00000000013C0000-0x00000000015EE000-memory.dmp	dcrat

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe

Executes dropped EXE 3 IoCs

pid	Process
1760	dllhost.exe
1636	dllhost.exe
2764	dllhost.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sppsvc = "\"C:\\Program Files (x86)\\Windows Mail\\sppsvc.exe\""	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\services = "\"C:\\Users\\Admin\\Links\\services.exe\""	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\services = "\"C:\\Users\\Admin\\Links\\services.exe\""	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\spoolsv = "\"C:\\Program Files (x86)\\MSBuild\\Microsoft\\spoolsv.exe\""	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\spoolsv = "\"C:\\Program Files (x86)\\MSBuild\\Microsoft\\spoolsv.exe\""	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\dllhost = "\"C:\\MSOCache\\All Users\\{90140000-0115-0409-0000-0000000FF1CE}-C\\1033\\dllhost.exe\""	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dllhost = "\"C:\\MSOCache\\All Users\\{90140000-0115-0409-0000-0000000FF1CE}-C\\1033\\dllhost.exe\""	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\sppsvc = "\"C:\\Program Files (x86)\\Windows Mail\\sppsvc.exe\""	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe

Checks whether UAC is enabled 1 TTPs 8 IoCs

defense_evasion trojan

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	dllhost.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	dllhost.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	dllhost.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	dllhost.exe

Drops file in Program Files directory 10 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\MSBuild\Microsoft\spoolsv.exe	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
File created	C:\Program Files (x86)\Windows Mail\sppsvc.exe	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
File created	C:\Program Files (x86)\Windows Mail\0a1fd5f707cd16	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
File opened for modification	C:\Program Files (x86)\MSBuild\Microsoft\RCXA9BB.tmp	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
File opened for modification	C:\Program Files (x86)\MSBuild\Microsoft\RCXA9BC.tmp	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
File opened for modification	C:\Program Files (x86)\Windows Mail\RCXADC5.tmp	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
File opened for modification	C:\Program Files (x86)\Windows Mail\sppsvc.exe	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
File created	C:\Program Files (x86)\MSBuild\Microsoft\f3b6ecef712a24	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
File opened for modification	C:\Program Files (x86)\MSBuild\Microsoft\spoolsv.exe	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
File opened for modification	C:\Program Files (x86)\Windows Mail\RCXADC6.tmp	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe

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

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 12 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1308	schtasks.exe
748	schtasks.exe
3008	schtasks.exe
2760	schtasks.exe
2796	schtasks.exe
2252	schtasks.exe
2456	schtasks.exe
1788	schtasks.exe
1480	schtasks.exe
2712	schtasks.exe
2956	schtasks.exe
2628	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe
1760	dllhost.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Token: SeDebugPrivilege	1760	dllhost.exe
Token: SeDebugPrivilege	1636	dllhost.exe
Token: SeDebugPrivilege	2764	dllhost.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 1760	2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe	43
PID 2524 wrote to memory of 1760	2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe	43
PID 2524 wrote to memory of 1760	2524	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe	43
PID 1760 wrote to memory of 852	1760	dllhost.exe	44
PID 1760 wrote to memory of 852	1760	dllhost.exe	44
PID 1760 wrote to memory of 852	1760	dllhost.exe	44
PID 1760 wrote to memory of 1600	1760	dllhost.exe	45
PID 1760 wrote to memory of 1600	1760	dllhost.exe	45
PID 1760 wrote to memory of 1600	1760	dllhost.exe	45
PID 852 wrote to memory of 1636	852	WScript.exe	47
PID 852 wrote to memory of 1636	852	WScript.exe	47
PID 852 wrote to memory of 1636	852	WScript.exe	47
PID 1636 wrote to memory of 2148	1636	dllhost.exe	48
PID 1636 wrote to memory of 2148	1636	dllhost.exe	48
PID 1636 wrote to memory of 2148	1636	dllhost.exe	48
PID 1636 wrote to memory of 1232	1636	dllhost.exe	49
PID 1636 wrote to memory of 1232	1636	dllhost.exe	49
PID 1636 wrote to memory of 1232	1636	dllhost.exe	49
PID 2148 wrote to memory of 2764	2148	WScript.exe	50
PID 2148 wrote to memory of 2764	2148	WScript.exe	50
PID 2148 wrote to memory of 2764	2148	WScript.exe	50
PID 2764 wrote to memory of 396	2764	dllhost.exe	51
PID 2764 wrote to memory of 396	2764	dllhost.exe	51
PID 2764 wrote to memory of 396	2764	dllhost.exe	51
PID 2764 wrote to memory of 1912	2764	dllhost.exe	52
PID 2764 wrote to memory of 1912	2764	dllhost.exe	52
PID 2764 wrote to memory of 1912	2764	dllhost.exe	52

System policy modification 1 TTPs 12 IoCs

defense_evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	dllhost.exe

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\95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe
"C:\Users\Admin\AppData\Local\Temp\95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27.exe"
1⤵
- Modifies WinLogon for persistence
- UAC bypass
- Drops file in Drivers directory
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2524
- C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\1033\dllhost.exe
  "C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\1033\dllhost.exe"
  2⤵
  - UAC bypass
  - Executes dropped EXE
  - Checks whether UAC is enabled
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:1760
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\96d7e339-db79-4242-8a9c-d6ff99ae768f.vbs"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:852
  - - C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\1033\dllhost.exe
      "C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\1033\dllhost.exe"
      4⤵
      UAC bypass
      Executes dropped EXE
      Checks whether UAC is enabled
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      System policy modification
      PID:1636
    - - C:\Windows\System32\WScript.exe
        
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\d0cb5a5e-669b-4fb3-bb75-964c0a5d27e1.vbs"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2148
      - C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\1033\dllhost.exe
        
        "C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\1033\dllhost.exe"
        6⤵
        UAC bypass
        Executes dropped EXE
        Checks whether UAC is enabled
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        System policy modification
        
        PID:2764
        
        C:\Windows\System32\WScript.exe
        
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\6af6a12b-8dc4-4aa0-bc16-1ca2af8cc323.vbs"
        7⤵
        
        PID:396
        
        C:\Windows\System32\WScript.exe
        
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\4c972005-0c64-443a-948b-d0f144bf9669.vbs"
        7⤵
        
        PID:1912
    - - C:\Windows\System32\WScript.exe
        
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\b98979d5-5fcc-4239-8e7d-b7aef2b141f2.vbs"
        5⤵
        
        PID:1232
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\b096876e-c2e5-4959-acc0-315111aa6353.vbs"
    3⤵
    PID:1600

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\Links\services.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2712

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Users\Admin\Links\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3008

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 9 /tr "'C:\Users\Admin\Links\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2956

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\spoolsv.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2760

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Program Files (x86)\MSBuild\Microsoft\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2796

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2628

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\1033\dllhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2252

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\1033\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2456

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 9 /tr "'C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\1033\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1788

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Windows Mail\sppsvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1308

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Mail\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:748

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Windows Mail\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1480

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\1033\dllhost.exe

Filesize
2.2MB

MD5
ba5102fee3b188bb6ac65068ec18d95d

SHA1
59a111a9ab515d690995496967de195eb23b097c

SHA256
95c8a2a9b99890e2398ab49937de11179c816b92ca6ab2ba269f1f8598675e27

SHA512
2dfe580f3e278431fef83d2c33c19e8af33ba958a7d6abc4cce571b202a64a06d7c54fda635b9b649d6bb6090ef0370063cf35cd5e6688dc435db6e6fe07cc37

Download Submit
C:\Users\Admin\AppData\Local\Temp\6af6a12b-8dc4-4aa0-bc16-1ca2af8cc323.vbs

Filesize
755B

MD5
4223e0ac08b68078f58587096de24b8d

SHA1
23fca6f341e893ff1384a7dbd4943bf38c61921b

SHA256
9d80a08bdec2874dc3dad4fca43e3b418f7f1c3edbd23feb49fcd7d3321fe303

SHA512
2874c0d5632da6c6b438bb65842c77bc4c0158e29cb571d50792246bb0d488463161c9c9b3903ab922b28fd509cdc7c0c3b3fa68e545e46f84d269ee954285fa

Download Submit
C:\Users\Admin\AppData\Local\Temp\96d7e339-db79-4242-8a9c-d6ff99ae768f.vbs

Filesize
755B

MD5
29c52809eb6d5810de1f4694cd3f746f

SHA1
04e8bde7910610c245e4d3381148e38f52b64dde

SHA256
a7c44910c872d8fc719a7ea53978cf9f7e8492989142f984016c457b7609d7fb

SHA512
dc7790b2b0fbf1fe533a9a18c4414d927c4ea24800d81162cc0d4ba96de9d16a3a03ebb344ea102d2a7e5e1e04b9d31aa56526b489672eee9107e1355450f67a

Download Submit
C:\Users\Admin\AppData\Local\Temp\RCXA526.tmp

Filesize
2.2MB

MD5
889f050ef7bc85238ef3ba17c1ca8530

SHA1
5168769f30a3efbf81ec2174c84d4290882b4c08

SHA256
774341277a7503097d574a8d34ec19abae11986e3d14925de81bdd680eac050d

SHA512
4a7c67efba35f6e12d2953466e8e7b3a05254ae1fc0cfd43cb16d9cb50bc4e69bdfb44d25d8555b36d7a6096a8a3c8c160de1cd03ee022c5a57681c59c7bf0ef

Download Submit
C:\Users\Admin\AppData\Local\Temp\b096876e-c2e5-4959-acc0-315111aa6353.vbs

Filesize
531B

MD5
bc0cbbb9b724f7f3a01c44d0ad079204

SHA1
3ab89427193fb2c1d975e0404fb999c856290fe7

SHA256
39e978a5320c638e5877b02385699f1631b8a51f3774ad0d7a1bc18149c2c5d4

SHA512
8abc5654caaf7d0677fd84a0881c53776b5bbc8671dc8f760182f3b937686a4a46640b361d22b74a3f0705b6fdaaaaee2349d5bcc768d20e274fb9caffeb17a7

Download Submit
C:\Users\Admin\AppData\Local\Temp\d0cb5a5e-669b-4fb3-bb75-964c0a5d27e1.vbs

Filesize
755B

MD5
03b2b1a59ee621058e52df236e76daeb

SHA1
950046edd82f1cb6889d5630d393dc9a405596f4

SHA256
c0200d7c03a97955b3c83157ccf989707155774ce88a116bc1a392bd67372de9

SHA512
1721857e57e55f83b5f4cd9a728940f58f1fc157e2dc4e50905e3553a41a304c3c368587592bceea5ea78181ac791b98ea26fc9eb479451cfd8934aa82820600

Download Submit
C:\Users\Admin\Links\services.exe

Filesize
2.2MB

MD5
77f7c6f803bcdc2331b9675e06b988be

SHA1
427bc645050f531b26b742d1385fe1c77b8d94ef

SHA256
140be28e3178be7bd1bf7ed36f7aab70c27628cce8a7b47817ad289447b93c08

SHA512
b50c5c27847c9592597b2589df5af37659c6e7f6ec414e73c48b730c4d9b7b3721d0ff7e0117e30f33bcf0fad6d0960b7ebdc7c139dbb254d925529df5bd5e88

Download Submit
memory/1636-110-0x00000000013C0000-0x00000000015EE000-memory.dmp

Filesize
2.2MB

Download
memory/1760-99-0x0000000000D00000-0x0000000000D12000-memory.dmp

Filesize
72KB

Download
memory/1760-97-0x0000000000D10000-0x0000000000F3E000-memory.dmp

Filesize
2.2MB

Download
memory/2524-10-0x0000000000B90000-0x0000000000B98000-memory.dmp

Filesize
32KB

Download
memory/2524-26-0x000000001AA30000-0x000000001AA3C000-memory.dmp

Filesize
48KB

Download
memory/2524-12-0x00000000024B0000-0x00000000024BA000-memory.dmp

Filesize
40KB

Download
memory/2524-13-0x00000000024C0000-0x00000000024CC000-memory.dmp

Filesize
48KB

Download
memory/2524-14-0x00000000024E0000-0x00000000024E8000-memory.dmp

Filesize
32KB

Download
memory/2524-15-0x00000000024F0000-0x00000000024FC000-memory.dmp

Filesize
48KB

Download
memory/2524-16-0x0000000002500000-0x0000000002508000-memory.dmp

Filesize
32KB

Download
memory/2524-18-0x0000000002510000-0x0000000002522000-memory.dmp

Filesize
72KB

Download
memory/2524-19-0x0000000002540000-0x000000000254C000-memory.dmp

Filesize
48KB

Download
memory/2524-20-0x0000000002550000-0x000000000255C000-memory.dmp

Filesize
48KB

Download
memory/2524-21-0x0000000002560000-0x000000000256C000-memory.dmp

Filesize
48KB

Download
memory/2524-22-0x000000001A9F0000-0x000000001A9FA000-memory.dmp

Filesize
40KB

Download
memory/2524-23-0x000000001AA00000-0x000000001AA0E000-memory.dmp

Filesize
56KB

Download
memory/2524-24-0x000000001AA10000-0x000000001AA18000-memory.dmp

Filesize
32KB

Download
memory/2524-25-0x000000001AA20000-0x000000001AA2E000-memory.dmp

Filesize
56KB

Download
memory/2524-11-0x00000000024D0000-0x00000000024E0000-memory.dmp

Filesize
64KB

Download
memory/2524-27-0x000000001AA40000-0x000000001AA48000-memory.dmp

Filesize
32KB

Download
memory/2524-28-0x000000001AA50000-0x000000001AA5C000-memory.dmp

Filesize
48KB

Download
memory/2524-29-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

Filesize
9.9MB

Download
memory/2524-0-0x000007FEF6003000-0x000007FEF6004000-memory.dmp

Filesize
4KB

Download
memory/2524-9-0x0000000000A00000-0x0000000000A0C000-memory.dmp

Filesize
48KB

Download
memory/2524-8-0x00000000009E0000-0x00000000009F6000-memory.dmp

Filesize
88KB

Download
memory/2524-7-0x00000000009D0000-0x00000000009E0000-memory.dmp

Filesize
64KB

Download
memory/2524-98-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

Filesize
9.9MB

Download
memory/2524-6-0x0000000000500000-0x0000000000508000-memory.dmp

Filesize
32KB

Download
memory/2524-5-0x00000000009B0000-0x00000000009CC000-memory.dmp

Filesize
112KB

Download
memory/2524-4-0x00000000004F0000-0x00000000004FE000-memory.dmp

Filesize
56KB

Download
memory/2524-3-0x0000000000360000-0x000000000036E000-memory.dmp

Filesize
56KB

Download
memory/2524-2-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

Filesize
9.9MB

Download
memory/2524-1-0x0000000000BA0000-0x0000000000DCE000-memory.dmp

Filesize
2.2MB

Download