dcrat | 8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
29-10-2024 04:11

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General

Target

6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
Size

2.8MB
MD5

6258c0d7c31a5ba4b2b0cb9c97606acd
SHA1

123138131fc33eeeedc82e795f201981232a55b1
SHA256

8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4
SHA512

9e8248a258475bf8676b041073da7985a3b0a6e57cf7293415e3dd1e6e8fd6bd0056ba4d60b33f6d4c0cfec4b3f33c43e88881c6a0f6fc52f3654ff12022875e
SSDEEP

49152:rPloaBLYs0dLLXmgmQPDWSJNCQdi2GjyIlAd28nZbmsl+S2sJaOP:rPl7ZoLbFmsPNHi2GjLAdVlqO

Score

10^/10

dcrat evasion infostealer 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

Process spawned unexpected child process 45 IoCs

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

Processes:

schtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.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	4428	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1816	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3236	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1612	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1904	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4312	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2272	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3940	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	232	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2624	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2024	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4372	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4692	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1416	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1480	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4980	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3252	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4636	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	8	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1328	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4104	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3684	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2584	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1532	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3660	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3536	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3688	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1760	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2420	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	956	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1556	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3856	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1040	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2900	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2868	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2536	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2660	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3136	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3644	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1616	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3464	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3428	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3208	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2432	2136	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1940	2136	schtasks.exe	87

UAC bypass 3 TTPs 6 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

6258C0D7C31A5BA4B2B0CB9C97606ACD.exeRuntimeBroker.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	RuntimeBroker.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	RuntimeBroker.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	RuntimeBroker.exe

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

Processes:

resource	yara_rule
behavioral2/memory/2288-1-0x0000000000180000-0x0000000000452000-memory.dmp	dcrat
behavioral2/files/0x0008000000023c18-31.dat	dcrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

6258C0D7C31A5BA4B2B0CB9C97606ACD.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe

Executes dropped EXE 1 IoCs

Processes:

RuntimeBroker.exe

pid	Process
2620	RuntimeBroker.exe

Checks whether UAC is enabled 1 TTPs 4 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

RuntimeBroker.exe6258C0D7C31A5BA4B2B0CB9C97606ACD.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	RuntimeBroker.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	RuntimeBroker.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe

Drops file in Program Files directory 21 IoCs

Processes:

6258C0D7C31A5BA4B2B0CB9C97606ACD.exe

description	ioc	Process
File created	C:\Program Files (x86)\Windows NT\Accessories\38384e6a620884	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File created	C:\Program Files (x86)\Google\Temp\ea1d8f6d871115	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File created	C:\Program Files\Windows Multimedia Platform\dwm.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File created	C:\Program Files\Windows Multimedia Platform\6cb0b6c459d5d3	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File opened for modification	C:\Program Files\Google\backgroundTaskHost.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File opened for modification	C:\Program Files (x86)\Windows NT\Accessories\SearchApp.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File opened for modification	C:\Program Files (x86)\Google\Temp\upfc.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File created	C:\Program Files\7-Zip\Lang\RuntimeBroker.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File created	C:\Program Files\7-Zip\Lang\9e8d7a4ca61bd9	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File created	C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\RuntimeBroker.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File created	C:\Program Files (x86)\Windows NT\Accessories\SearchApp.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File created	C:\Program Files (x86)\Google\Temp\upfc.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File created	C:\Program Files\Internet Explorer\es-ES\System.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File opened for modification	C:\Program Files\7-Zip\Lang\RuntimeBroker.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File created	C:\Program Files\Google\eddb19405b7ce1	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File created	C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\9e8d7a4ca61bd9	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File created	C:\Program Files\Internet Explorer\es-ES\27d1bcfc3c54e0	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File opened for modification	C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\RuntimeBroker.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File opened for modification	C:\Program Files\Internet Explorer\es-ES\System.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File opened for modification	C:\Program Files\Windows Multimedia Platform\dwm.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File created	C:\Program Files\Google\backgroundTaskHost.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe

Drops file in Windows directory 6 IoCs

Processes:

6258C0D7C31A5BA4B2B0CB9C97606ACD.exe

description	ioc	Process
File created	C:\Windows\Cursors\9e8d7a4ca61bd9	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File opened for modification	C:\Windows\Cursors\RuntimeBroker.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File created	C:\Windows\INF\Windows Workflow Foundation 3.0.0.0\0409\SppExtComObj.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File opened for modification	C:\Windows\INF\Windows Workflow Foundation 3.0.0.0\0409\SppExtComObj.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File created	C:\Windows\INF\Windows Workflow Foundation 3.0.0.0\0409\e1ef82546f0b02	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
File created	C:\Windows\Cursors\RuntimeBroker.exe	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

6258C0D7C31A5BA4B2B0CB9C97606ACD.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\Local Settings	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 45 IoCs

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

persistence execution

Scheduled Task

T1053.005

Processes:

pid	Process
4428	schtasks.exe
1904	schtasks.exe
232	schtasks.exe
4372	schtasks.exe
4104	schtasks.exe
2584	schtasks.exe
2868	schtasks.exe
3136	schtasks.exe
2624	schtasks.exe
1416	schtasks.exe
3688	schtasks.exe
3236	schtasks.exe
8	schtasks.exe
3684	schtasks.exe
1532	schtasks.exe
2420	schtasks.exe
3252	schtasks.exe
3536	schtasks.exe
2900	schtasks.exe
1616	schtasks.exe
2432	schtasks.exe
1612	schtasks.exe
1480	schtasks.exe
4980	schtasks.exe
4636	schtasks.exe
3856	schtasks.exe
1040	schtasks.exe
2536	schtasks.exe
3644	schtasks.exe
1940	schtasks.exe
2272	schtasks.exe
2024	schtasks.exe
4692	schtasks.exe
956	schtasks.exe
1556	schtasks.exe
2660	schtasks.exe
3464	schtasks.exe
3428	schtasks.exe
1816	schtasks.exe
3940	schtasks.exe
1760	schtasks.exe
4312	schtasks.exe
1328	schtasks.exe
3660	schtasks.exe
3208	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

6258C0D7C31A5BA4B2B0CB9C97606ACD.exe

pid	Process
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RuntimeBroker.exe

pid	Process
2620	RuntimeBroker.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

6258C0D7C31A5BA4B2B0CB9C97606ACD.exeRuntimeBroker.exe

description	pid	Process
Token: SeDebugPrivilege	2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
Token: SeDebugPrivilege	2620	RuntimeBroker.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

6258C0D7C31A5BA4B2B0CB9C97606ACD.execmd.exe

description	pid	Process	procid_target
PID 2288 wrote to memory of 3020	2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe	137
PID 2288 wrote to memory of 3020	2288	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe	137
PID 3020 wrote to memory of 3656	3020	cmd.exe	140
PID 3020 wrote to memory of 3656	3020	cmd.exe	140
PID 3020 wrote to memory of 2620	3020	cmd.exe	142
PID 3020 wrote to memory of 2620	3020	cmd.exe	142

System policy modification 1 TTPs 6 IoCs

evasion

Modify Registry

T1112

Processes:

6258C0D7C31A5BA4B2B0CB9C97606ACD.exeRuntimeBroker.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	RuntimeBroker.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	RuntimeBroker.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	RuntimeBroker.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\6258C0D7C31A5BA4B2B0CB9C97606ACD.exe
"C:\Users\Admin\AppData\Local\Temp\6258C0D7C31A5BA4B2B0CB9C97606ACD.exe"
1⤵
- UAC bypass
- Checks computer location settings
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2288
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\NuLx4BY34C.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3020
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:3656
- - C:\Users\Default User\RuntimeBroker.exe
    "C:\Users\Default User\RuntimeBroker.exe"
    3⤵
    - UAC bypass
    - Executes dropped EXE
    - Checks whether UAC is enabled
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - System policy modification
    PID:2620

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 14 /tr "'C:\Windows\INF\Windows Workflow Foundation 3.0.0.0\0409\SppExtComObj.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4428

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Windows\INF\Windows Workflow Foundation 3.0.0.0\0409\SppExtComObj.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1816

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 7 /tr "'C:\Windows\INF\Windows Workflow Foundation 3.0.0.0\0409\SppExtComObj.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3236

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 7 /tr "'C:\Program Files\Google\backgroundTaskHost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1612

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Program Files\Google\backgroundTaskHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1904

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 10 /tr "'C:\Program Files\Google\backgroundTaskHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4312

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\Program Files\7-Zip\Lang\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2272

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\7-Zip\Lang\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3940

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 9 /tr "'C:\Program Files\7-Zip\Lang\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:232

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2624

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2024

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1416

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4372

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4692

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

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4980

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3252

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4636

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Windows NT\Accessories\SearchApp.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:8

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\Accessories\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1328

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows NT\Accessories\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4104

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Google\Temp\upfc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3684

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\Program Files (x86)\Google\Temp\upfc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2584

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Google\Temp\upfc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1532

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Windows\Cursors\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3660

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\Cursors\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3536

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 14 /tr "'C:\Windows\Cursors\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3688

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 12 /tr "'C:\Program Files\Internet Explorer\es-ES\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1760

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Program Files\Internet Explorer\es-ES\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2420

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 9 /tr "'C:\Program Files\Internet Explorer\es-ES\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:956

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\services.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1556

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3856

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1040

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 10 /tr "'C:\Users\All Users\Start Menu\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2900

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Users\All Users\Start Menu\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2868

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 6 /tr "'C:\Users\All Users\Start Menu\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2536

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 12 /tr "'C:\Program Files\Windows Multimedia Platform\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2660

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files\Windows Multimedia Platform\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3136

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Multimedia Platform\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3644

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 12 /tr "'C:\Users\Default User\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1616

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\Default User\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3464

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 13 /tr "'C:\Users\Default User\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3428

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2432

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3208

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

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:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\RuntimeBroker.exe

Filesize
2.8MB

MD5
6258c0d7c31a5ba4b2b0cb9c97606acd

SHA1
123138131fc33eeeedc82e795f201981232a55b1

SHA256
8d5514730f330a6f4ae9b1807f0c77ed15975d469c7c92c10c690ed681210ed4

SHA512
9e8248a258475bf8676b041073da7985a3b0a6e57cf7293415e3dd1e6e8fd6bd0056ba4d60b33f6d4c0cfec4b3f33c43e88881c6a0f6fc52f3654ff12022875e

Download Submit
C:\Users\Admin\AppData\Local\Temp\NuLx4BY34C.bat

Filesize
204B

MD5
1e9e32af5ee5ad7d7b2bce4d6ff171a9

SHA1
f86a91953b74eec7580030a86d84a8d43f9ae1cc

SHA256
29561ad04bcc41ab5a2c7601a07af658dfa9d9e5e2265f8af7a7d145648e71ca

SHA512
3c82e369a92d633877321383e4d138951d35ed87f2610d928cee08efdf4106b970a5bcf89d2e5428bb62066280ac3cf5455c5c8148ec522a32ee935fe70c68d6

Download Submit
memory/2288-14-0x000000001B100000-0x000000001B112000-memory.dmp

Filesize
72KB

Download
memory/2288-4-0x0000000002580000-0x000000000259C000-memory.dmp

Filesize
112KB

Download
memory/2288-15-0x000000001BE60000-0x000000001C388000-memory.dmp

Filesize
5.2MB

Download
memory/2288-17-0x000000001B2A0000-0x000000001B2AC000-memory.dmp

Filesize
48KB

Download
memory/2288-7-0x00000000025B0000-0x00000000025C0000-memory.dmp

Filesize
64KB

Download
memory/2288-6-0x00000000025A0000-0x00000000025A8000-memory.dmp

Filesize
32KB

Download
memory/2288-10-0x000000001B0F0000-0x000000001B102000-memory.dmp

Filesize
72KB

Download
memory/2288-9-0x000000001B0C0000-0x000000001B0C8000-memory.dmp

Filesize
32KB

Download
memory/2288-8-0x000000001B0A0000-0x000000001B0B6000-memory.dmp

Filesize
88KB

Download
memory/2288-11-0x000000001B0D0000-0x000000001B0DA000-memory.dmp

Filesize
40KB

Download
memory/2288-12-0x000000001B8E0000-0x000000001B936000-memory.dmp

Filesize
344KB

Download
memory/2288-13-0x000000001B0E0000-0x000000001B0E8000-memory.dmp

Filesize
32KB

Download
memory/2288-1-0x0000000000180000-0x0000000000452000-memory.dmp

Filesize
2.8MB

Download
memory/2288-3-0x00000000024D0000-0x00000000024DE000-memory.dmp

Filesize
56KB

Download
memory/2288-5-0x000000001B240000-0x000000001B290000-memory.dmp

Filesize
320KB

Download
memory/2288-18-0x000000001BB80000-0x000000001BB8C000-memory.dmp

Filesize
48KB

Download
memory/2288-20-0x000000001B2C0000-0x000000001B2CC000-memory.dmp

Filesize
48KB

Download
memory/2288-19-0x000000001B2B0000-0x000000001B2BE000-memory.dmp

Filesize
56KB

Download
memory/2288-16-0x000000001B290000-0x000000001B298000-memory.dmp

Filesize
32KB

Download
memory/2288-21-0x000000001BA30000-0x000000001BA3A000-memory.dmp

Filesize
40KB

Download
memory/2288-22-0x000000001BB40000-0x000000001BB4C000-memory.dmp

Filesize
48KB

Download
memory/2288-2-0x00007FFEF6560000-0x00007FFEF7021000-memory.dmp

Filesize
10.8MB

Download
memory/2288-65-0x00007FFEF6563000-0x00007FFEF6565000-memory.dmp

Filesize
8KB

Download
memory/2288-68-0x00007FFEF6560000-0x00007FFEF7021000-memory.dmp

Filesize
10.8MB

Download
memory/2288-75-0x00007FFEF6560000-0x00007FFEF7021000-memory.dmp

Filesize
10.8MB

Download
memory/2288-0-0x00007FFEF6563000-0x00007FFEF6565000-memory.dmp

Filesize
8KB

Download