dcrat | e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a

Analysis

max time kernel
121s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27-11-2024 18:55

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General

Target

e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Size

1.8MB
MD5

382eaedc34bfc15b7e749fb8a0cff600
SHA1

d8729997725a187120ee95e1d6068586a13ab678
SHA256

e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a
SHA512

f2be10566728f10a1396abf3115a01d98a5b06d18b94e84ecb6fbb012f1ad3ad588be84f09ceafa55bc9fd65a7e6763c68ca67596141c750ae54a2bebfc5c16b
SSDEEP

24576:nfNh6iTrBgSq+kdkpupwocpF4jGdWWfWanontd7ksYKtAwqgKchGGqGLk6kIv/D5:f3/kGAwaCYO4ngs7wg8UkcX

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 6 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files\\Internet Explorer\\de-DE\\dwm.exe\", \"C:\\Windows\\BitLockerDiscoveryVolumeContents\\csrss.exe\", \"C:\\Users\\All Users\\Package Cache\\OSPPSVC.exe\", \"C:\\Program Files\\MSBuild\\Microsoft\\Windows Workflow Foundation\\csrss.exe\", \"C:\\MSOCache\\All Users\\dwm.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files\\Internet Explorer\\de-DE\\dwm.exe\", \"C:\\Windows\\BitLockerDiscoveryVolumeContents\\csrss.exe\", \"C:\\Users\\All Users\\Package Cache\\OSPPSVC.exe\", \"C:\\Program Files\\MSBuild\\Microsoft\\Windows Workflow Foundation\\csrss.exe\", \"C:\\MSOCache\\All Users\\dwm.exe\", \"C:\\Users\\Admin\\AppData\\Local\\Temp\\e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files\\Internet Explorer\\de-DE\\dwm.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files\\Internet Explorer\\de-DE\\dwm.exe\", \"C:\\Windows\\BitLockerDiscoveryVolumeContents\\csrss.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files\\Internet Explorer\\de-DE\\dwm.exe\", \"C:\\Windows\\BitLockerDiscoveryVolumeContents\\csrss.exe\", \"C:\\Users\\All Users\\Package Cache\\OSPPSVC.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files\\Internet Explorer\\de-DE\\dwm.exe\", \"C:\\Windows\\BitLockerDiscoveryVolumeContents\\csrss.exe\", \"C:\\Users\\All Users\\Package Cache\\OSPPSVC.exe\", \"C:\\Program Files\\MSBuild\\Microsoft\\Windows Workflow Foundation\\csrss.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe

Process spawned unexpected child process 18 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.exe

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2932	2788	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2076	2788	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1628	2788	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2560	2788	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2044	2788	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2176	2788	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1104	2788	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2008	2788	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2428	2788	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1432	2788	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1876	2788	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2004	2788	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2052	2788	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2772	2788	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1724	2788	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1596	2788	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1648	2788	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2408	2788	schtasks.exe	31

Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs

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

execution

PowerShell

T1059.001

Processes:

powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

pid	Process
2116	powershell.exe
2220	powershell.exe
2036	powershell.exe
956	powershell.exe
664	powershell.exe
2188	powershell.exe

Executes dropped EXE 1 IoCs

Processes:

OSPPSVC.exe

pid	Process
1276	OSPPSVC.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 12 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dwm = "\"C:\\MSOCache\\All Users\\dwm.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\BitLockerDiscoveryVolumeContents\\csrss.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\BitLockerDiscoveryVolumeContents\\csrss.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OSPPSVC = "\"C:\\Users\\All Users\\Package Cache\\OSPPSVC.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Program Files\\MSBuild\\Microsoft\\Windows Workflow Foundation\\csrss.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\dwm = "\"C:\\MSOCache\\All Users\\dwm.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\dwm = "\"C:\\Program Files\\Internet Explorer\\de-DE\\dwm.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dwm = "\"C:\\Program Files\\Internet Explorer\\de-DE\\dwm.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\OSPPSVC = "\"C:\\Users\\All Users\\Package Cache\\OSPPSVC.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Program Files\\MSBuild\\Microsoft\\Windows Workflow Foundation\\csrss.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe\""	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe

Drops file in System32 directory 2 IoCs

Processes:

csc.exe

description	ioc	Process
File created	\??\c:\Windows\System32\1woi1z.exe	csc.exe
File created	\??\c:\Windows\System32\CSCDB76FEA264834E55AC6DC5F5583F45B7.TMP	csc.exe

Drops file in Program Files directory 4 IoCs

Processes:

e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe

description	ioc	Process
File created	C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\csrss.exe	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
File created	C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\886983d96e3d3e	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
File created	C:\Program Files\Internet Explorer\de-DE\dwm.exe	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
File created	C:\Program Files\Internet Explorer\de-DE\6cb0b6c459d5d3	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe

Drops file in Windows directory 2 IoCs

Processes:

e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe

description	ioc	Process
File created	C:\Windows\BitLockerDiscoveryVolumeContents\csrss.exe	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
File created	C:\Windows\BitLockerDiscoveryVolumeContents\886983d96e3d3e	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.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

Scheduled Task/Job: Scheduled Task 1 TTPs 18 IoCs

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

persistence execution

Scheduled Task

T1053.005

Processes:

pid	Process
2076	schtasks.exe
2560	schtasks.exe
2176	schtasks.exe
2004	schtasks.exe
1648	schtasks.exe
2932	schtasks.exe
1596	schtasks.exe
1628	schtasks.exe
2044	schtasks.exe
1104	schtasks.exe
2008	schtasks.exe
1432	schtasks.exe
2052	schtasks.exe
2772	schtasks.exe
1724	schtasks.exe
2428	schtasks.exe
1876	schtasks.exe
2408	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe

pid	Process
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeOSPPSVC.exe

description	pid	Process
Token: SeDebugPrivilege	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
Token: SeDebugPrivilege	2188	powershell.exe
Token: SeDebugPrivilege	2116	powershell.exe
Token: SeDebugPrivilege	664	powershell.exe
Token: SeDebugPrivilege	2036	powershell.exe
Token: SeDebugPrivilege	2220	powershell.exe
Token: SeDebugPrivilege	956	powershell.exe
Token: SeDebugPrivilege	1276	OSPPSVC.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.execsc.execmd.exe

description	pid	Process	procid_target
PID 2328 wrote to memory of 2556	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	35
PID 2328 wrote to memory of 2556	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	35
PID 2328 wrote to memory of 2556	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	35
PID 2556 wrote to memory of 2840	2556	csc.exe	37
PID 2556 wrote to memory of 2840	2556	csc.exe	37
PID 2556 wrote to memory of 2840	2556	csc.exe	37
PID 2328 wrote to memory of 2220	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	53
PID 2328 wrote to memory of 2220	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	53
PID 2328 wrote to memory of 2220	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	53
PID 2328 wrote to memory of 2036	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	54
PID 2328 wrote to memory of 2036	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	54
PID 2328 wrote to memory of 2036	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	54
PID 2328 wrote to memory of 2188	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	56
PID 2328 wrote to memory of 2188	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	56
PID 2328 wrote to memory of 2188	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	56
PID 2328 wrote to memory of 664	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	57
PID 2328 wrote to memory of 664	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	57
PID 2328 wrote to memory of 664	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	57
PID 2328 wrote to memory of 956	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	58
PID 2328 wrote to memory of 956	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	58
PID 2328 wrote to memory of 956	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	58
PID 2328 wrote to memory of 2116	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	59
PID 2328 wrote to memory of 2116	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	59
PID 2328 wrote to memory of 2116	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	59
PID 2328 wrote to memory of 2768	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	65
PID 2328 wrote to memory of 2768	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	65
PID 2328 wrote to memory of 2768	2328	e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe	65
PID 2768 wrote to memory of 1308	2768	cmd.exe	67
PID 2768 wrote to memory of 1308	2768	cmd.exe	67
PID 2768 wrote to memory of 1308	2768	cmd.exe	67
PID 2768 wrote to memory of 2300	2768	cmd.exe	68
PID 2768 wrote to memory of 2300	2768	cmd.exe	68
PID 2768 wrote to memory of 2300	2768	cmd.exe	68
PID 2768 wrote to memory of 1276	2768	cmd.exe	69
PID 2768 wrote to memory of 1276	2768	cmd.exe	69
PID 2768 wrote to memory of 1276	2768	cmd.exe	69

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\e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe
"C:\Users\Admin\AppData\Local\Temp\e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2328
- 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\csuvrf5u\csuvrf5u.cmdline"
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:2556
- - 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\RESF5E3.tmp" "c:\Windows\System32\CSCDB76FEA264834E55AC6DC5F5583F45B7.TMP"
    3⤵
    PID:2840
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Internet Explorer\de-DE\dwm.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of AdjustPrivilegeToken
  PID:2220
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\BitLockerDiscoveryVolumeContents\csrss.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of AdjustPrivilegeToken
  PID:2036
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\All Users\Package Cache\OSPPSVC.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of AdjustPrivilegeToken
  PID:2188
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\csrss.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of AdjustPrivilegeToken
  PID:664
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\MSOCache\All Users\dwm.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of AdjustPrivilegeToken
  PID:956
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of AdjustPrivilegeToken
  PID:2116
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\jkhc8K8rYY.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2768
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:1308
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:2300
- - C:\Users\All Users\Package Cache\OSPPSVC.exe
    "C:\Users\All Users\Package Cache\OSPPSVC.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1276

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 14 /tr "'C:\Program Files\Internet Explorer\de-DE\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2932

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files\Internet Explorer\de-DE\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2076

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 6 /tr "'C:\Program Files\Internet Explorer\de-DE\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1628

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2560

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2044

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2176

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 10 /tr "'C:\Users\All Users\Package Cache\OSPPSVC.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1104

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Users\All Users\Package Cache\OSPPSVC.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2008

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 5 /tr "'C:\Users\All Users\Package Cache\OSPPSVC.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2428

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1432

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1876

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2004

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2052

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\MSOCache\All Users\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2772

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1724

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847ae" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\AppData\Local\Temp\e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1596

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1648

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847ae" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\AppData\Local\Temp\e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2408

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

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\Internet Explorer\de-DE\dwm.exe

Filesize
1.8MB

MD5
382eaedc34bfc15b7e749fb8a0cff600

SHA1
d8729997725a187120ee95e1d6068586a13ab678

SHA256
e864306092df6d14c7214c505630f0df5faaa0f622331eec1dc9d3841de2847a

SHA512
f2be10566728f10a1396abf3115a01d98a5b06d18b94e84ecb6fbb012f1ad3ad588be84f09ceafa55bc9fd65a7e6763c68ca67596141c750ae54a2bebfc5c16b

Download Submit
C:\Users\Admin\AppData\Local\Temp\RESF5E3.tmp

Filesize
1KB

MD5
c71567639f61002d2b68f41ea622b6e0

SHA1
7a2b45fb900066996d06aebbe4b3d7ada9c564c6

SHA256
9cab6a671efbb1d13d1e2ff5bfd442931c93c730847751eade434a84c46620b0

SHA512
267b5d5c4e4cf1ea1d3e7dce28ae2e1189bc413230620f503cd2afbf73875e49c95542bbcd34a2594017cd1a4296d28b35b148b5bb5a997de85802cebcdcf41c

Download Submit
C:\Users\Admin\AppData\Local\Temp\jkhc8K8rYY.bat

Filesize
220B

MD5
a21952921f23f107d0522e27db32c8a0

SHA1
f97d1e762901305dc0ace7634cb91ef84d7d02de

SHA256
8f86b22ae55621bab48624966ec2b4aa45280f885245733afad23d15cb12f55f

SHA512
1df5351ff93608379002d7bb3a06cd70697f2148342acfeb3385e30e1ea0a617208b750683def0ed3dfa24e2bc55bfae169c6d6eb8d33845933519061165beca

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
5730743f0af8a62f882e93338bcb0b36

SHA1
325b5f18ad0d9174c311e6a561aafd5110c017b7

SHA256
f65294b68800e6df6153b99d75c34ec29455a9dc089f78c8d9b2bbb721e98f50

SHA512
fb393752af768a2ee08d41a548aea9528e59d6ed74cf9bb01890b979493766d7be00b3e763f3b693c0b30cbc3ae451401a2af890883c55d71c0db73fccce2111

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\csuvrf5u\csuvrf5u.0.cs

Filesize
380B

MD5
227523b46063e8b0237d17a3a08b4ea6

SHA1
72c6510bb4c12380650b34fc65f327c0136bddc0

SHA256
feb4a9804bd7febf8c42211a3fdbd944d6bfdd01f8fabda6060967b0e67da769

SHA512
b33b13911eb2bf12bfefc05e4f26ed232476fde8ea575f263fec129685a5c203fa0c039d1ca2b2133a2234dbaeff12db8fa427357ed45a896876de1a551e6f05

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\csuvrf5u\csuvrf5u.cmdline

Filesize
235B

MD5
3d93a721f40b265ddb362e9d17582325

SHA1
45673f917424809aac95f5f75a159e6e337c255c

SHA256
7b5156ada8912dbda0e7986fe6eb857ddae2147ae1adcda0cd5381937e32fcb9

SHA512
529a69b47f46f199f772116f7a9e6b37514c61705546fbf240cedc71d62f53ac73e806e188f59dbd12a9a6ac70cffc12ae9173106b7b81db1ed80da48ca32e3f

Download Submit
\??\c:\Windows\System32\CSCDB76FEA264834E55AC6DC5F5583F45B7.TMP

Filesize
1KB

MD5
dcd286f3a69cfd0292a8edbc946f8553

SHA1
4d347ac1e8c1d75fc139878f5646d3a0b083ef17

SHA256
29e03364271673f4b388131b7773d016df859bb0b1c5e6c3ad6914a632600596

SHA512
4b9546033bd4957263854fbb0a87aa1d57ce3afbce7bf03b12b05b78f97c5a27c52c1d73e34b6a5ba2c395e26ec9c474a32609441b99cf78ea707113fca96f77

Download Submit
memory/664-59-0x000000001B700000-0x000000001B9E2000-memory.dmp

Filesize
2.9MB

Download
memory/1276-80-0x0000000000350000-0x000000000052A000-memory.dmp

Filesize
1.9MB

Download
memory/2116-61-0x0000000001D20000-0x0000000001D28000-memory.dmp

Filesize
32KB

Download
memory/2328-9-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

Filesize
9.9MB

Download
memory/2328-8-0x0000000000630000-0x000000000064C000-memory.dmp

Filesize
112KB

Download
memory/2328-14-0x00000000001A0000-0x00000000001AC000-memory.dmp

Filesize
48KB

Download
memory/2328-17-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

Filesize
9.9MB

Download
memory/2328-15-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

Filesize
9.9MB

Download
memory/2328-12-0x0000000000650000-0x0000000000668000-memory.dmp

Filesize
96KB

Download
memory/2328-10-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

Filesize
9.9MB

Download
memory/2328-16-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

Filesize
9.9MB

Download
memory/2328-0-0x000007FEF53C3000-0x000007FEF53C4000-memory.dmp

Filesize
4KB

Download
memory/2328-6-0x0000000000180000-0x000000000018E000-memory.dmp

Filesize
56KB

Download
memory/2328-4-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

Filesize
9.9MB

Download
memory/2328-76-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

Filesize
9.9MB

Download
memory/2328-3-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

Filesize
9.9MB

Download
memory/2328-2-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

Filesize
9.9MB

Download
memory/2328-1-0x0000000000800000-0x00000000009DA000-memory.dmp

Filesize
1.9MB

Download