dcrat | b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-11-2024 03:26

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General

Target

b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
Size

2.7MB
MD5

93b41bde029ee047568eaf23be8cf599
SHA1

50ce44062008f18a3127522e5fa94d373c97ca8f
SHA256

b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84
SHA512

8744ac0e952e5e1d9f40dc89a9131353c475d8eeb309d34e68209e985e16fff80e1df3a16282ad48e95e3f27380e6b47e89d2e6df1ac5b652ab8a4b5b85eecf3
SSDEEP

49152:ZVIR0tEKCS4NSvq428wJW2KU3wvEGXFdRp8uM4BQdIFo11IQu:TIR0tWTS5wJW2viXHR65XOi11ID

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 30 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	4440	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5060	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2876	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3444	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4908	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2408	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4028	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2736	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3412	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3416	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	628	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3372	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	916	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2940	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4808	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3288	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	376	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2828	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	368	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2432	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	100	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1636	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	464	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3552	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1216	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1692	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4524	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4460	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1288	1268	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3408	1268	schtasks.exe	85

UAC bypass 3 TTPs 6 IoCs

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"	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	smss.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	smss.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	smss.exe

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral2/memory/436-1-0x0000000000C80000-0x0000000000F44000-memory.dmp	dcrat
behavioral2/files/0x0007000000023cae-30.dat	dcrat
behavioral2/files/0x0038000000023b5b-113.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe

Executes dropped EXE 1 IoCs

pid	Process
3200	smss.exe

Checks whether UAC is enabled 1 TTPs 4 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	smss.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	smss.exe

Drops file in Program Files directory 20 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Windows NT\TableTextService\en-US\9e8d7a4ca61bd9	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File created	C:\Program Files (x86)\Microsoft\sppsvc.exe	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Program Files\Mozilla Firefox\defaults\pref\RCXB2E9.tmp	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Program Files\Common Files\System\RCXBC29.tmp	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Program Files (x86)\Microsoft\RCXC4FA.tmp	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Program Files (x86)\Microsoft\RCXC4FB.tmp	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File created	C:\Program Files (x86)\Windows NT\TableTextService\en-US\RuntimeBroker.exe	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File created	C:\Program Files (x86)\Microsoft\0a1fd5f707cd16	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Program Files (x86)\Windows NT\TableTextService\en-US\RCXB50E.tmp	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Program Files\Common Files\System\dllhost.exe	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Program Files (x86)\Microsoft\sppsvc.exe	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File created	C:\Program Files\Mozilla Firefox\defaults\pref\121e5b5079f7c0	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File created	C:\Program Files\Common Files\System\5940a34987c991	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Program Files\Mozilla Firefox\defaults\pref\RCXB2F9.tmp	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Program Files\Mozilla Firefox\defaults\pref\sysmon.exe	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Program Files\Common Files\System\RCXBB9B.tmp	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File created	C:\Program Files\Mozilla Firefox\defaults\pref\sysmon.exe	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File created	C:\Program Files\Common Files\System\dllhost.exe	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Program Files (x86)\Windows NT\TableTextService\en-US\RCXB51E.tmp	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Program Files (x86)\Windows NT\TableTextService\en-US\RuntimeBroker.exe	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe

Drops file in Windows directory 15 IoCs

description	ioc	Process
File opened for modification	C:\Windows\TAPI\smss.exe	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File created	C:\Windows\Speech\Engines\ee2ad38f3d4382	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Windows\TAPI\RCXB967.tmp	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Windows\Help\en-US\RCXC044.tmp	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Windows\Help\en-US\backgroundTaskHost.exe	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Windows\Speech\Engines\RCXC258.tmp	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Windows\Speech\Engines\RCXC269.tmp	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File created	C:\Windows\TAPI\smss.exe	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File created	C:\Windows\TAPI\69ddcba757bf72	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File created	C:\Windows\Help\en-US\eddb19405b7ce1	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Windows\Help\en-US\RCXC043.tmp	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File created	C:\Windows\Help\en-US\backgroundTaskHost.exe	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File created	C:\Windows\Speech\Engines\Registry.exe	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Windows\TAPI\RCXB978.tmp	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
File opened for modification	C:\Windows\Speech\Engines\Registry.exe	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 30 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2408	schtasks.exe
628	schtasks.exe
916	schtasks.exe
4524	schtasks.exe
3408	schtasks.exe
4440	schtasks.exe
5060	schtasks.exe
4028	schtasks.exe
1692	schtasks.exe
2876	schtasks.exe
3444	schtasks.exe
4908	schtasks.exe
3416	schtasks.exe
368	schtasks.exe
2736	schtasks.exe
4808	schtasks.exe
376	schtasks.exe
2940	schtasks.exe
3288	schtasks.exe
3372	schtasks.exe
2828	schtasks.exe
3552	schtasks.exe
1216	schtasks.exe
2432	schtasks.exe
1636	schtasks.exe
464	schtasks.exe
4460	schtasks.exe
3412	schtasks.exe
100	schtasks.exe
1288	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
3200	smss.exe
3200	smss.exe
3200	smss.exe
3200	smss.exe
3200	smss.exe
3200	smss.exe
3200	smss.exe
3200	smss.exe
3200	smss.exe
3200	smss.exe
3200	smss.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
Token: SeDebugPrivilege	3200	smss.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 436 wrote to memory of 3016	436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe	124
PID 436 wrote to memory of 3016	436	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe	124
PID 3016 wrote to memory of 2036	3016	cmd.exe	126
PID 3016 wrote to memory of 2036	3016	cmd.exe	126
PID 3016 wrote to memory of 3200	3016	cmd.exe	132
PID 3016 wrote to memory of 3200	3016	cmd.exe	132

System policy modification 1 TTPs 6 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	smss.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	smss.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	smss.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\b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.exe
"C:\Users\Admin\AppData\Local\Temp\b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84.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:436
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\2HVdYORdue.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3016
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:2036
- - C:\Windows\TAPI\smss.exe
    "C:\Windows\TAPI\smss.exe"
    3⤵
    - UAC bypass
    - Executes dropped EXE
    - Checks whether UAC is enabled
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - System policy modification
    PID:3200

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4440

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5060

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2876

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 10 /tr "'C:\Program Files\Mozilla Firefox\defaults\pref\sysmon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3444

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Program Files\Mozilla Firefox\defaults\pref\sysmon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4908

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 14 /tr "'C:\Program Files\Mozilla Firefox\defaults\pref\sysmon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2408

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Windows NT\TableTextService\en-US\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4028

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\TableTextService\en-US\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2736

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Windows NT\TableTextService\en-US\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3412

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3416

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:628

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3372

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 14 /tr "'C:\Windows\TAPI\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:916

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Windows\TAPI\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2940

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 14 /tr "'C:\Windows\TAPI\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4808

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 14 /tr "'C:\Program Files\Common Files\System\dllhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3288

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files\Common Files\System\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:376

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 12 /tr "'C:\Program Files\Common Files\System\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2828

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 14 /tr "'C:\Users\Admin\Documents\My Videos\TextInputHost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:368

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TextInputHost" /sc ONLOGON /tr "'C:\Users\Admin\Documents\My Videos\TextInputHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2432

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 14 /tr "'C:\Users\Admin\Documents\My Videos\TextInputHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:100

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 12 /tr "'C:\Windows\Help\en-US\backgroundTaskHost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1636

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Windows\Help\en-US\backgroundTaskHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:464

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 7 /tr "'C:\Windows\Help\en-US\backgroundTaskHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3552

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 12 /tr "'C:\Windows\Speech\Engines\Registry.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1216

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\Windows\Speech\Engines\Registry.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1692

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 8 /tr "'C:\Windows\Speech\Engines\Registry.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4524

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Microsoft\sppsvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4460

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1288

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Microsoft\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3408

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\Common Files\System\dllhost.exe

Filesize
2.7MB

MD5
1d5284e7be9719a57af56e2c7023ed7a

SHA1
d695d25fce3d6ddc1a889f6d8c925f03e261296d

SHA256
d20ed1c89a7e3eb899acfceacb181d5c23be64aebb3a2704d1b933ba507bf4b0

SHA512
e7c4dc71423bfc48040199d5fd913eb4a86dc3a9cc4a8921294e68b6cfa4b9d9ca397508c90f25d6595722b3162601fbbffaf024d05ff9ad469ecda259d7db9e

Download Submit
C:\Users\Admin\AppData\Local\Temp\2HVdYORdue.bat

Filesize
189B

MD5
2931b4655b9fe531af681c7e7336842e

SHA1
e015eff0bc48bce2fc99ffcd6aec58e9d3c62ff7

SHA256
1fea705d22be06e14b0b83c6db68f5e4bb177b2652147e91cbc0441830e7cb1e

SHA512
b24c4b8967a713bdb4940ecdac2c944e6950298c4e09fb978b669ef69627f82fe60aee03affcabc44c665a458c5af9ba9c8a77b26345764cfc39484b3028bc4e

Download Submit
C:\Windows\TAPI\smss.exe

Filesize
2.7MB

MD5
93b41bde029ee047568eaf23be8cf599

SHA1
50ce44062008f18a3127522e5fa94d373c97ca8f

SHA256
b0c1b143e23bdbcaeb5916b4ecb941fe5072023136e157394df8d1e1c306bf84

SHA512
8744ac0e952e5e1d9f40dc89a9131353c475d8eeb309d34e68209e985e16fff80e1df3a16282ad48e95e3f27380e6b47e89d2e6df1ac5b652ab8a4b5b85eecf3

Download Submit
memory/436-14-0x000000001C800000-0x000000001CD28000-memory.dmp

Filesize
5.2MB

Download
memory/436-16-0x000000001C550000-0x000000001C558000-memory.dmp

Filesize
32KB

Download
memory/436-5-0x000000001C210000-0x000000001C260000-memory.dmp

Filesize
320KB

Download
memory/436-7-0x00000000030A0000-0x00000000030B0000-memory.dmp

Filesize
64KB

Download
memory/436-6-0x0000000001820000-0x0000000001828000-memory.dmp

Filesize
32KB

Download
memory/436-8-0x00000000031C0000-0x00000000031D6000-memory.dmp

Filesize
88KB

Download
memory/436-9-0x00000000031E0000-0x00000000031E8000-memory.dmp

Filesize
32KB

Download
memory/436-10-0x0000000003210000-0x000000000321A000-memory.dmp

Filesize
40KB

Download
memory/436-11-0x000000001C260000-0x000000001C2B6000-memory.dmp

Filesize
344KB

Download
memory/436-12-0x00000000031F0000-0x00000000031F8000-memory.dmp

Filesize
32KB

Download
memory/436-13-0x0000000003200000-0x0000000003212000-memory.dmp

Filesize
72KB

Download
memory/436-0-0x00007FFB89CE3000-0x00007FFB89CE5000-memory.dmp

Filesize
8KB

Download
memory/436-15-0x000000001C2D0000-0x000000001C2DC000-memory.dmp

Filesize
48KB

Download
memory/436-4-0x0000000003080000-0x000000000309C000-memory.dmp

Filesize
112KB

Download
memory/436-17-0x000000001C3E0000-0x000000001C3EE000-memory.dmp

Filesize
56KB

Download
memory/436-18-0x000000001C3F0000-0x000000001C3FE000-memory.dmp

Filesize
56KB

Download
memory/436-19-0x000000001C400000-0x000000001C40C000-memory.dmp

Filesize
48KB

Download
memory/436-20-0x000000001C510000-0x000000001C51A000-memory.dmp

Filesize
40KB

Download
memory/436-21-0x000000001C520000-0x000000001C52C000-memory.dmp

Filesize
48KB

Download
memory/436-3-0x0000000001810000-0x000000000181E000-memory.dmp

Filesize
56KB

Download
memory/436-2-0x00007FFB89CE0000-0x00007FFB8A7A1000-memory.dmp

Filesize
10.8MB

Download
memory/436-164-0x00007FFB89CE3000-0x00007FFB89CE5000-memory.dmp

Filesize
8KB

Download
memory/436-1-0x0000000000C80000-0x0000000000F44000-memory.dmp

Filesize
2.8MB

Download
memory/436-172-0x00007FFB89CE0000-0x00007FFB8A7A1000-memory.dmp

Filesize
10.8MB

Download
memory/3200-176-0x000000001D5F0000-0x000000001D602000-memory.dmp

Filesize
72KB

Download