dcrat | 433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-01-2025 03:32

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General

Target

433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
Size

1.8MB
MD5

d7e7b597ce0c3a87c408c197af695fc4
SHA1

abf13cbcb77d1fe2270b3b7746087419f366748d
SHA256

433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2
SHA512

7cfbf0bd871b9e04e8cd178e8f82052efb108284a279c8e16ea0087e322dfbf00aca117db9cfccb6b6278134edcbce2b8f3b6c050fa4021f6f65f2ccdaf02c91
SSDEEP

24576:fpu2MG9vXL71sCw7sULd3yRsjBp2gltcEA4pUiD7nApwp6t1:Bu2Mw7Y0RsrB5UiD8pw

Score

10^/10

dcrat discovery execution infostealer persistence rat spyware stealer

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 5 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:\\Recovery\\WindowsRE\\System.exe\", \"C:\\Users\\Public\\Desktop\\explorer.exe\", \"C:\\Program Files (x86)\\Microsoft.NET\\Primary Interop Assemblies\\csrss.exe\", \"C:\\Program Files (x86)\\Windows Multimedia Platform\\SppExtComObj.exe\""	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\WindowsRE\\System.exe\", \"C:\\Users\\Public\\Desktop\\explorer.exe\", \"C:\\Program Files (x86)\\Microsoft.NET\\Primary Interop Assemblies\\csrss.exe\", \"C:\\Program Files (x86)\\Windows Multimedia Platform\\SppExtComObj.exe\", \"C:\\Program Files\\Windows Mail\\RuntimeBroker.exe\""	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\WindowsRE\\System.exe\""	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\WindowsRE\\System.exe\", \"C:\\Users\\Public\\Desktop\\explorer.exe\""	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Recovery\\WindowsRE\\System.exe\", \"C:\\Users\\Public\\Desktop\\explorer.exe\", \"C:\\Program Files (x86)\\Microsoft.NET\\Primary Interop Assemblies\\csrss.exe\""	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe

Process spawned unexpected child process 15 IoCs

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

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4228	1224	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3652	1224	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4648	1224	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4704	1224	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	456	1224	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1744	1224	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3588	1224	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3264	1224	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3404	1224	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3520	1224	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1468	1224	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1364	1224	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2332	1224	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3948	1224	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3764	1224	schtasks.exe	84

DCRat payload 2 IoCs

rat

resource	yara_rule
behavioral2/memory/4588-1-0x0000000000670000-0x0000000000840000-memory.dmp	family_dcrat_v2
behavioral2/files/0x000a000000023b9f-55.dat	family_dcrat_v2

Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2000	powershell.exe
2276	powershell.exe
4836	powershell.exe
832	powershell.exe
3312	powershell.exe

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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe

Executes dropped EXE 1 IoCs

pid	Process
3652	RuntimeBroker.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 10 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "\"C:\\Recovery\\WindowsRE\\System.exe\""	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "\"C:\\Recovery\\WindowsRE\\System.exe\""	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\explorer = "\"C:\\Users\\Public\\Desktop\\explorer.exe\""	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Program Files\\Windows Mail\\RuntimeBroker.exe\""	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\explorer = "\"C:\\Users\\Public\\Desktop\\explorer.exe\""	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Program Files (x86)\\Microsoft.NET\\Primary Interop Assemblies\\csrss.exe\""	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Program Files (x86)\\Microsoft.NET\\Primary Interop Assemblies\\csrss.exe\""	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SppExtComObj = "\"C:\\Program Files (x86)\\Windows Multimedia Platform\\SppExtComObj.exe\""	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SppExtComObj = "\"C:\\Program Files (x86)\\Windows Multimedia Platform\\SppExtComObj.exe\""	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Program Files\\Windows Mail\\RuntimeBroker.exe\""	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	\??\c:\Windows\System32\CSC192333977344A06B4BC19CE53B083AC.TMP	csc.exe
File created	\??\c:\Windows\System32\ewkptm.exe	csc.exe

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\csrss.exe	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
File created	C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\886983d96e3d3e	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
File created	C:\Program Files (x86)\Windows Multimedia Platform\SppExtComObj.exe	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
File created	C:\Program Files (x86)\Windows Multimedia Platform\e1ef82546f0b02	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
File created	C:\Program Files\Windows Mail\RuntimeBroker.exe	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
File created	C:\Program Files\Windows Mail\9e8d7a4ca61bd9	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4256	PING.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000_Classes\Local Settings	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4256	PING.EXE

Scheduled Task/Job: Scheduled Task 1 TTPs 15 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
456	schtasks.exe
1744	schtasks.exe
3520	schtasks.exe
4228	schtasks.exe
3264	schtasks.exe
3404	schtasks.exe
1364	schtasks.exe
2332	schtasks.exe
3948	schtasks.exe
3764	schtasks.exe
3652	schtasks.exe
4704	schtasks.exe
1468	schtasks.exe
4648	schtasks.exe
3588	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3652	RuntimeBroker.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
Token: SeDebugPrivilege	2000	powershell.exe
Token: SeDebugPrivilege	4836	powershell.exe
Token: SeDebugPrivilege	2276	powershell.exe
Token: SeDebugPrivilege	3312	powershell.exe
Token: SeDebugPrivilege	832	powershell.exe
Token: SeDebugPrivilege	3652	RuntimeBroker.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 2972	4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe	88
PID 4588 wrote to memory of 2972	4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe	88
PID 2972 wrote to memory of 3696	2972	csc.exe	90
PID 2972 wrote to memory of 3696	2972	csc.exe	90
PID 4588 wrote to memory of 3312	4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe	103
PID 4588 wrote to memory of 3312	4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe	103
PID 4588 wrote to memory of 832	4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe	104
PID 4588 wrote to memory of 832	4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe	104
PID 4588 wrote to memory of 4836	4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe	105
PID 4588 wrote to memory of 4836	4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe	105
PID 4588 wrote to memory of 2276	4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe	106
PID 4588 wrote to memory of 2276	4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe	106
PID 4588 wrote to memory of 2000	4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe	107
PID 4588 wrote to memory of 2000	4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe	107
PID 4588 wrote to memory of 3144	4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe	113
PID 4588 wrote to memory of 3144	4588	433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe	113
PID 3144 wrote to memory of 2396	3144	cmd.exe	116
PID 3144 wrote to memory of 2396	3144	cmd.exe	116
PID 3144 wrote to memory of 4256	3144	cmd.exe	117
PID 3144 wrote to memory of 4256	3144	cmd.exe	117
PID 3144 wrote to memory of 3652	3144	cmd.exe	124
PID 3144 wrote to memory of 3652	3144	cmd.exe	124

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\433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe
"C:\Users\Admin\AppData\Local\Temp\433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in Program Files directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4588
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\ursq4oyw\ursq4oyw.cmdline"
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:2972
- - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
    C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESC2F2.tmp" "c:\Windows\System32\CSC192333977344A06B4BC19CE53B083AC.TMP"
    3⤵
    PID:3696
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\WindowsRE\System.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of AdjustPrivilegeToken
  PID:3312
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Public\Desktop\explorer.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of AdjustPrivilegeToken
  PID:832
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\csrss.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of AdjustPrivilegeToken
  PID:4836
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Windows Multimedia Platform\SppExtComObj.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of AdjustPrivilegeToken
  PID:2276
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Windows Mail\RuntimeBroker.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of AdjustPrivilegeToken
  PID:2000
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\0xKhr3C7ze.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3144
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2396
- - C:\Windows\system32\PING.EXE
    ping -n 10 localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4256
- - C:\Program Files\Windows Mail\RuntimeBroker.exe
    "C:\Program Files\Windows Mail\RuntimeBroker.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:3652

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4228

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4648

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3652

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 12 /tr "'C:\Users\Public\Desktop\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4704

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Users\Public\Desktop\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:456

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 11 /tr "'C:\Users\Public\Desktop\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1744

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3588

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3264

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3404

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows Multimedia Platform\SppExtComObj.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3520

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Multimedia Platform\SppExtComObj.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1468

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Windows Multimedia Platform\SppExtComObj.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1364

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows Mail\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2332

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\Windows Mail\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3948

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Mail\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

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

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\Windows Mail\RuntimeBroker.exe

Filesize
1.8MB

MD5
d7e7b597ce0c3a87c408c197af695fc4

SHA1
abf13cbcb77d1fe2270b3b7746087419f366748d

SHA256
433c302a290e1ca96522457ffb5f0bcca53641a2c49e00d38db75bbb8db282e2

SHA512
7cfbf0bd871b9e04e8cd178e8f82052efb108284a279c8e16ea0087e322dfbf00aca117db9cfccb6b6278134edcbce2b8f3b6c050fa4021f6f65f2ccdaf02c91

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
cadef9abd087803c630df65264a6c81c

SHA1
babbf3636c347c8727c35f3eef2ee643dbcc4bd2

SHA256
cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

SHA512
7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

Download Submit
C:\Users\Admin\AppData\Local\Temp\0xKhr3C7ze.bat

Filesize
175B

MD5
80224ae77b9a78992c661d025152fddb

SHA1
95d63720c8baee3fa362d0ff6be8e7cee4c75128

SHA256
b8bb958a67f82a4c1a08bdc90384c8c97f79b55f251f2d7fefcdce99f322b35c

SHA512
f7947c28aefb7b5d268874140963714b374a2deac1f01a99dad757269e94b5b0c65dd65f22bc5e638491c003f14cac1d5662330a8d42d953dc44d2b2adf1d54c

Download Submit
C:\Users\Admin\AppData\Local\Temp\49DpWgaTLd

Filesize
116KB

MD5
f70aa3fa04f0536280f872ad17973c3d

SHA1
50a7b889329a92de1b272d0ecf5fce87395d3123

SHA256
8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

SHA512
30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84

Download Submit
C:\Users\Admin\AppData\Local\Temp\RESC2F2.tmp

Filesize
1KB

MD5
8ff95bf41b0d5f6ff663f9981e2846d1

SHA1
85ce0214b37b84c247e668a6b2d8fa4d4b1b9751

SHA256
b84e3a513ef87eb50ed84c1156f7f62be229f83ff22f302c200ec60d2160a5ec

SHA512
4375b45188d712865d76aa4cfd13a5b8049ecb32078415430ab2345ef35975329706f84528caf81f683b10d45cbde60d9955c9a6e0517cb92b9a4b1ecad43def

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pwrpsvnb.ymq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\ecgoKWwoY0

Filesize
114KB

MD5
2ba42ee03f1c6909ca8a6575bd08257a

SHA1
88b18450a4d9cc88e5f27c8d11c0323f475d1ae6

SHA256
a14fb57193e6930fa9e410d9c55dfe98e3ae5e69b22356e621edc73683a581bd

SHA512
a1f32c22f0d78cba95c04c432e2a58ea47fb34942e70bfdceffcc2ac1e91b87a3da2cd9f93793427ee09a623c7da700e1c16977d41a44286317e8fc20502f035

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\ursq4oyw\ursq4oyw.0.cs

Filesize
364B

MD5
5b60203bf5f49ee1f2128575fec475ad

SHA1
015249ab4ff3df4f097d6f47dcb516162f1d8519

SHA256
34f20a2f0dda8b7e6689f19f9c30014d21d508338160dcefd6970ace05baffd4

SHA512
6a25a0df5b2fcdaa3ebeb84dbc970c7226ceed6827fac9367d3553e9ae8881d8727db8cd8dcecf8d9cb9dbec2f9e0dfa013769d6c11acdf2197a7db99b7b6b58

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\ursq4oyw\ursq4oyw.cmdline

Filesize
235B

MD5
53ca323014774e9f59cf5b6d1446b6b3

SHA1
a5f224f7715f4c30a8994badbad9841639152ce8

SHA256
8f8ead8ee917a20bdf06917034a6099d30d818d5109f3b50f43393049fdbaf65

SHA512
b14f5ee7a4e9afd57f14c4bc782af028162d173e7d752473d494c953d44ba7bd9450babe643901814b13fb1815e0dbbe5c55028829b2f762d2d6abcfb36e23d3

Download Submit
\??\c:\Windows\System32\CSC192333977344A06B4BC19CE53B083AC.TMP

Filesize
1KB

MD5
be99f41194f5159cc131a1a4353a0e0a

SHA1
f24e3bf06e777b4de8d072166cff693e43f2295c

SHA256
564d9051e5639603c83562a9ff2c2e478cc7e13d54faf39f761297bac78603bf

SHA512
51d1a50772bb7d689193e6a9b2e363185cf5438103644b2b68cf13e08274c5d99407b99f8cdc856143d28669f5ee4ee316041a8e33df42f55bfd181aa3f3c0f5

Download Submit
memory/2000-79-0x000002E35A7E0000-0x000002E35A802000-memory.dmp

Filesize
136KB

Download
memory/3652-151-0x000000001E270000-0x000000001E419000-memory.dmp

Filesize
1.7MB

Download
memory/3652-192-0x000000001E270000-0x000000001E419000-memory.dmp

Filesize
1.7MB

Download
memory/4588-18-0x00000000028E0000-0x00000000028EC000-memory.dmp

Filesize
48KB

Download
memory/4588-25-0x000000001B3C0000-0x000000001B3CE000-memory.dmp

Filesize
56KB

Download
memory/4588-23-0x000000001B3B0000-0x000000001B3BC000-memory.dmp

Filesize
48KB

Download
memory/4588-30-0x000000001B5D0000-0x000000001B5E2000-memory.dmp

Filesize
72KB

Download
memory/4588-28-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download
memory/4588-31-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download
memory/4588-32-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download
memory/4588-33-0x000000001BB20000-0x000000001C048000-memory.dmp

Filesize
5.2MB

Download
memory/4588-35-0x000000001B3D0000-0x000000001B3DC000-memory.dmp

Filesize
48KB

Download
memory/4588-37-0x000000001B530000-0x000000001B540000-memory.dmp

Filesize
64KB

Download
memory/4588-39-0x000000001B590000-0x000000001B59E000-memory.dmp

Filesize
56KB

Download
memory/4588-41-0x000000001B610000-0x000000001B628000-memory.dmp

Filesize
96KB

Download
memory/4588-46-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download
memory/4588-45-0x000000001B680000-0x000000001B6CE000-memory.dmp

Filesize
312KB

Download
memory/4588-43-0x000000001B5A0000-0x000000001B5AC000-memory.dmp

Filesize
48KB

Download
memory/4588-27-0x000000001B5B0000-0x000000001B5C2000-memory.dmp

Filesize
72KB

Download
memory/4588-21-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download
memory/4588-16-0x00000000028D0000-0x00000000028E0000-memory.dmp

Filesize
64KB

Download
memory/4588-20-0x00000000028F0000-0x00000000028FE000-memory.dmp

Filesize
56KB

Download
memory/4588-0-0x00007FFEEB9B3000-0x00007FFEEB9B5000-memory.dmp

Filesize
8KB

Download
memory/4588-14-0x0000000002A10000-0x0000000002A28000-memory.dmp

Filesize
96KB

Download
memory/4588-12-0x000000001B540000-0x000000001B590000-memory.dmp

Filesize
320KB

Download
memory/4588-107-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download
memory/4588-10-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download
memory/4588-11-0x00000000028B0000-0x00000000028CC000-memory.dmp

Filesize
112KB

Download
memory/4588-9-0x00000000028D0000-0x00000000028EC000-memory.dmp

Filesize
112KB

Download
memory/4588-5-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download
memory/4588-7-0x00000000010F0000-0x00000000010FE000-memory.dmp

Filesize
56KB

Download
memory/4588-4-0x000000001B310000-0x000000001B336000-memory.dmp

Filesize
152KB

Download
memory/4588-2-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download
memory/4588-1-0x0000000000670000-0x0000000000840000-memory.dmp

Filesize
1.8MB

Download