dcrat | 2c359780ff1c635fd866c9f81e53ea9a95c0af2c9b303aec259675882dd13253

Analysis

max time kernel
121s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-01-2025 16:51

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General

Target

51ee1c43b8c4c83a1ee89f486a002e8a.exe
Size

1.9MB
MD5

51ee1c43b8c4c83a1ee89f486a002e8a
SHA1

ac3559b85e9f8328fc661c4f7dc17d464aa461fa
SHA256

2c359780ff1c635fd866c9f81e53ea9a95c0af2c9b303aec259675882dd13253
SHA512

3191012d5078beb815ff733c3981545858a30e5051ffbbb7b4bb1dff5bab82004809a0d407af0d8312b241c05738591d7a83ce2e01e0c9b2e8f9d325ca9649d6
SSDEEP

49152:SIsY+oZb+wZGTt6IDmYYg+tfxXi1Mq39V:SIg6IDatJXbM9V

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

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Mozilla Maintenance Service\\logs\\WmiPrvSE.exe\", \"C:\\Program Files (x86)\\Windows Mail\\smss.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Mozilla Maintenance Service\\logs\\WmiPrvSE.exe\", \"C:\\Program Files (x86)\\Windows Mail\\smss.exe\", \"C:\\Program Files (x86)\\Internet Explorer\\en-US\\lsass.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Mozilla Maintenance Service\\logs\\WmiPrvSE.exe\", \"C:\\Program Files (x86)\\Windows Mail\\smss.exe\", \"C:\\Program Files (x86)\\Internet Explorer\\en-US\\lsass.exe\", \"C:\\Users\\Default User\\csrss.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Mozilla Maintenance Service\\logs\\WmiPrvSE.exe\", \"C:\\Program Files (x86)\\Windows Mail\\smss.exe\", \"C:\\Program Files (x86)\\Internet Explorer\\en-US\\lsass.exe\", \"C:\\Users\\Default User\\csrss.exe\", \"C:\\Users\\Public\\Favorites\\winlogon.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Mozilla Maintenance Service\\logs\\WmiPrvSE.exe\", \"C:\\Program Files (x86)\\Windows Mail\\smss.exe\", \"C:\\Program Files (x86)\\Internet Explorer\\en-US\\lsass.exe\", \"C:\\Users\\Default User\\csrss.exe\", \"C:\\Users\\Public\\Favorites\\winlogon.exe\", \"C:\\Users\\Admin\\AppData\\Local\\Temp\\51ee1c43b8c4c83a1ee89f486a002e8a.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\Mozilla Maintenance Service\\logs\\WmiPrvSE.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe

Process spawned unexpected child process 18 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	1656	2624	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	588	2624	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2216	2624	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1680	2624	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2580	2624	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2064	2624	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2704	2624	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2140	2624	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2516	2624	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	776	2624	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2972	2624	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2856	2624	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2548	2624	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2976	2624	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1940	2624	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	976	2624	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3020	2624	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2280	2624	schtasks.exe	30

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

pid	Process
2436	powershell.exe
1688	powershell.exe
1424	powershell.exe
2144	powershell.exe
1596	powershell.exe
2132	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
2740	lsass.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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\WmiPrvSE = "\"C:\\Program Files (x86)\\Mozilla Maintenance Service\\logs\\WmiPrvSE.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WmiPrvSE = "\"C:\\Program Files (x86)\\Mozilla Maintenance Service\\logs\\WmiPrvSE.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\smss = "\"C:\\Program Files (x86)\\Windows Mail\\smss.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Users\\Default User\\csrss.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "\"C:\\Users\\Public\\Favorites\\winlogon.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\51ee1c43b8c4c83a1ee89f486a002e8a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\51ee1c43b8c4c83a1ee89f486a002e8a.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smss = "\"C:\\Program Files (x86)\\Windows Mail\\smss.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\lsass = "\"C:\\Program Files (x86)\\Internet Explorer\\en-US\\lsass.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\lsass = "\"C:\\Program Files (x86)\\Internet Explorer\\en-US\\lsass.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Users\\Default User\\csrss.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\winlogon = "\"C:\\Users\\Public\\Favorites\\winlogon.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\51ee1c43b8c4c83a1ee89f486a002e8a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\51ee1c43b8c4c83a1ee89f486a002e8a.exe\""	51ee1c43b8c4c83a1ee89f486a002e8a.exe

Looks up external IP address via web service 4 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ipinfo.io
5	ipinfo.io
12	ipinfo.io
13	ipinfo.io

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	\??\c:\Windows\System32\3kmwe8.exe	csc.exe
File created	\??\c:\Windows\System32\CSC56C0968DF43F42A2B7751CC2EC385A6.TMP	csc.exe

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Internet Explorer\en-US\lsass.exe	51ee1c43b8c4c83a1ee89f486a002e8a.exe
File created	C:\Program Files (x86)\Internet Explorer\en-US\6203df4a6bafc7	51ee1c43b8c4c83a1ee89f486a002e8a.exe
File created	C:\Program Files (x86)\Windows Mail\smss.exe	51ee1c43b8c4c83a1ee89f486a002e8a.exe
File created	C:\Program Files (x86)\Windows Mail\69ddcba757bf72	51ee1c43b8c4c83a1ee89f486a002e8a.exe
File created	C:\Program Files (x86)\Mozilla Maintenance Service\logs\WmiPrvSE.exe	51ee1c43b8c4c83a1ee89f486a002e8a.exe
File created	C:\Program Files (x86)\Mozilla Maintenance Service\logs\24dbde2999530e	51ee1c43b8c4c83a1ee89f486a002e8a.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Speech\Common\de-DE\csrss.exe	51ee1c43b8c4c83a1ee89f486a002e8a.exe

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
2576	PING.EXE

Modifies system certificate store 2 TTPs 2 IoCs

defense_evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 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	51ee1c43b8c4c83a1ee89f486a002e8a.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2576	PING.EXE

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

pid	Process
2548	schtasks.exe
976	schtasks.exe
1656	schtasks.exe
2216	schtasks.exe
2580	schtasks.exe
2140	schtasks.exe
588	schtasks.exe
2856	schtasks.exe
2976	schtasks.exe
2972	schtasks.exe
1940	schtasks.exe
3020	schtasks.exe
2280	schtasks.exe
1680	schtasks.exe
2704	schtasks.exe
2516	schtasks.exe
776	schtasks.exe
2064	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe
Token: SeDebugPrivilege	2436	powershell.exe
Token: SeDebugPrivilege	2144	powershell.exe
Token: SeDebugPrivilege	2132	powershell.exe
Token: SeDebugPrivilege	1424	powershell.exe
Token: SeDebugPrivilege	1596	powershell.exe
Token: SeDebugPrivilege	1688	powershell.exe
Token: SeDebugPrivilege	2740	lsass.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 792	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	34
PID 2756 wrote to memory of 792	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	34
PID 2756 wrote to memory of 792	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	34
PID 792 wrote to memory of 1436	792	csc.exe	36
PID 792 wrote to memory of 1436	792	csc.exe	36
PID 792 wrote to memory of 1436	792	csc.exe	36
PID 2756 wrote to memory of 2436	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	52
PID 2756 wrote to memory of 2436	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	52
PID 2756 wrote to memory of 2436	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	52
PID 2756 wrote to memory of 2132	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	53
PID 2756 wrote to memory of 2132	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	53
PID 2756 wrote to memory of 2132	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	53
PID 2756 wrote to memory of 1688	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	54
PID 2756 wrote to memory of 1688	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	54
PID 2756 wrote to memory of 1688	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	54
PID 2756 wrote to memory of 1596	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	56
PID 2756 wrote to memory of 1596	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	56
PID 2756 wrote to memory of 1596	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	56
PID 2756 wrote to memory of 2144	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	57
PID 2756 wrote to memory of 2144	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	57
PID 2756 wrote to memory of 2144	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	57
PID 2756 wrote to memory of 1424	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	59
PID 2756 wrote to memory of 1424	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	59
PID 2756 wrote to memory of 1424	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	59
PID 2756 wrote to memory of 2244	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	64
PID 2756 wrote to memory of 2244	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	64
PID 2756 wrote to memory of 2244	2756	51ee1c43b8c4c83a1ee89f486a002e8a.exe	64
PID 2244 wrote to memory of 2996	2244	cmd.exe	66
PID 2244 wrote to memory of 2996	2244	cmd.exe	66
PID 2244 wrote to memory of 2996	2244	cmd.exe	66
PID 2244 wrote to memory of 2576	2244	cmd.exe	67
PID 2244 wrote to memory of 2576	2244	cmd.exe	67
PID 2244 wrote to memory of 2576	2244	cmd.exe	67
PID 2244 wrote to memory of 2740	2244	cmd.exe	68
PID 2244 wrote to memory of 2740	2244	cmd.exe	68
PID 2244 wrote to memory of 2740	2244	cmd.exe	68

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\51ee1c43b8c4c83a1ee89f486a002e8a.exe
"C:\Users\Admin\AppData\Local\Temp\51ee1c43b8c4c83a1ee89f486a002e8a.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2756
- 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\rmhl5yjz\rmhl5yjz.cmdline"
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:792
- - 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\RES782C.tmp" "c:\Windows\System32\CSC56C0968DF43F42A2B7751CC2EC385A6.TMP"
    3⤵
    PID:1436
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Mozilla Maintenance Service\logs\WmiPrvSE.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of AdjustPrivilegeToken
  PID:2436
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Windows Mail\smss.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of AdjustPrivilegeToken
  PID:2132
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Internet Explorer\en-US\lsass.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of AdjustPrivilegeToken
  PID:1688
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Default User\csrss.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of AdjustPrivilegeToken
  PID:1596
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Public\Favorites\winlogon.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of AdjustPrivilegeToken
  PID:2144
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\51ee1c43b8c4c83a1ee89f486a002e8a.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of AdjustPrivilegeToken
  PID:1424
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\rWLcZICN77.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2244
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2996
- - C:\Windows\system32\PING.EXE
    ping -n 10 localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2576
- - C:\Program Files (x86)\Internet Explorer\en-US\lsass.exe
    "C:\Program Files (x86)\Internet Explorer\en-US\lsass.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2740

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\WmiPrvSE.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2216

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1656

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:588

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows Mail\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1680

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Mail\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2580

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows Mail\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2064

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Internet Explorer\en-US\lsass.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2704

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Program Files (x86)\Internet Explorer\en-US\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2140

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Internet Explorer\en-US\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2516

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Users\Default User\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:776

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\Default User\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2856

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 12 /tr "'C:\Users\Default User\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2972

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 14 /tr "'C:\Users\Public\Favorites\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2548

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Users\Public\Favorites\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2976

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 7 /tr "'C:\Users\Public\Favorites\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:976

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "51ee1c43b8c4c83a1ee89f486a002e8a5" /sc MINUTE /mo 11 /tr "'C:\Users\Admin\AppData\Local\Temp\51ee1c43b8c4c83a1ee89f486a002e8a.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1940

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "51ee1c43b8c4c83a1ee89f486a002e8a" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\51ee1c43b8c4c83a1ee89f486a002e8a.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2280

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "51ee1c43b8c4c83a1ee89f486a002e8a5" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\AppData\Local\Temp\51ee1c43b8c4c83a1ee89f486a002e8a.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3020

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

Subvert Trust Controls

T1553

Install Root Certificate

T1553.004

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

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 (x86)\Mozilla Maintenance Service\logs\WmiPrvSE.exe

Filesize
1.9MB

MD5
51ee1c43b8c4c83a1ee89f486a002e8a

SHA1
ac3559b85e9f8328fc661c4f7dc17d464aa461fa

SHA256
2c359780ff1c635fd866c9f81e53ea9a95c0af2c9b303aec259675882dd13253

SHA512
3191012d5078beb815ff733c3981545858a30e5051ffbbb7b4bb1dff5bab82004809a0d407af0d8312b241c05738591d7a83ce2e01e0c9b2e8f9d325ca9649d6

Download Submit
C:\Users\Admin\AppData\Local\Temp\RES782C.tmp

Filesize
1KB

MD5
2d15bc063a5d67867a7c9363c0238287

SHA1
4d7bc377b481e83484bd359f09c450699ec01e1e

SHA256
ba71d3c80ec36a6137dc9c4545015ae6b4981eb74c6b9a60606ac6b8e831598b

SHA512
52db8c6a433c3880f73f245260f5a1e983294b4512f4d9ff97c5ea722a23ba37fe1c5ed576ee511fd741b07ec80581ff064b1d0fc27e8d14bdff2ff63f9760b7

Download Submit
C:\Users\Admin\AppData\Local\Temp\rWLcZICN77.bat

Filesize
184B

MD5
e97f52a79a8d26bcda436c99c6e5fb22

SHA1
a57b6cdf8bd4fee08fcbdbf98a589e0b1bde7de6

SHA256
10f7cf0c20e26eb25602864402e8b9d932d0d0bd68b4711e9fa56b6d9d58c059

SHA512
10c1359d65431e02612997302f18393f203898b34d486caa7ea718a8a38477f2e16060bcb207bbb9f85f9d66a0f09f9c43f06e2e254b8bce4618191b946ecb7f

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

Filesize
7KB

MD5
855bb37e60ace97039c94c6257e0c30a

SHA1
5f183f885762db20af44ace9659dd319e0457298

SHA256
79c193e2f450c3adb25f17c7b0b56d50ffd0267b7f7b308a4ff7e0f1f938ce06

SHA512
5a0108f09262097c4caa61b928bd946f03b5110847fd335fa22eedf9a5c3b9c7077fd122601814551125fb6b056dec9275798529cc431ff31e18f5c6c8f92dda

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\rmhl5yjz\rmhl5yjz.0.cs

Filesize
400B

MD5
5aa92967ecf6e2f924c88b17c396364b

SHA1
3552f0e90dad798ca589103c5ee59ecb95466acf

SHA256
2b304bf9c0c35974c536eb0ec964f5c39b9a46df1913a1415f3afabf87fbb6ba

SHA512
d3e3cad33cdd442cbbc7907e30809dc33684179332dda90c71af75cde23c8567b46b1ff71c8476e2948623ee846f3cd51d518dc7263fe42d786512d269da9623

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\rmhl5yjz\rmhl5yjz.cmdline

Filesize
235B

MD5
a4ef5efbcae4c61e9c79d53ad02547eb

SHA1
ce38e6ae372f37ab909bb44e54caa89e2355f8cd

SHA256
36b8d47cbf0209a854c2b96c6ade8c149fa1e83855ea7fed3e95791143d49fea

SHA512
daf4685ab1b3593ba80200dfdb09ee22ceee413029706259289c781a3708abec9c45e1814b0802b83a1ba196352f20cbda939d1fbab87c1c4bae2f5645a1766d

Download Submit
\??\c:\Windows\System32\CSC56C0968DF43F42A2B7751CC2EC385A6.TMP

Filesize
1KB

MD5
8c85ef91c6071d33745325a8fa351c3e

SHA1
e3311ceef28823eec99699cc35be27c94eca52d2

SHA256
8db3e3a5515da1933036688a9b1918cfc3339fc687008c5325461271904b2d41

SHA512
2bb89b07fe46b1c406ed6a560e88cb2b8402b1d61bb71e10887bad661751f64f1e5317fd6c1b301ea4766785b915da31b64e0475cfe36c1f950b32915b5dab7d

Download Submit
memory/1424-79-0x000000001B5A0000-0x000000001B882000-memory.dmp

Filesize
2.9MB

Download
memory/2144-85-0x00000000026F0000-0x00000000026F8000-memory.dmp

Filesize
32KB

Download
memory/2740-89-0x0000000000CD0000-0x0000000000EB8000-memory.dmp

Filesize
1.9MB

Download
memory/2756-23-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-8-0x00000000003C0000-0x00000000003DC000-memory.dmp

Filesize
112KB

Download
memory/2756-22-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-21-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-20-0x0000000000330000-0x000000000033C000-memory.dmp

Filesize
48KB

Download
memory/2756-18-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-0-0x000007FEF6403000-0x000007FEF6404000-memory.dmp

Filesize
4KB

Download
memory/2756-14-0x0000000000310000-0x000000000031E000-memory.dmp

Filesize
56KB

Download
memory/2756-16-0x0000000000320000-0x0000000000328000-memory.dmp

Filesize
32KB

Download
memory/2756-11-0x00000000004F0000-0x0000000000508000-memory.dmp

Filesize
96KB

Download
memory/2756-12-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-17-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-9-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-47-0x000007FEF6403000-0x000007FEF6404000-memory.dmp

Filesize
4KB

Download
memory/2756-48-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-49-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-6-0x0000000000200000-0x000000000020E000-memory.dmp

Filesize
56KB

Download
memory/2756-4-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-3-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-2-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-63-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-1-0x0000000000900000-0x0000000000AE8000-memory.dmp

Filesize
1.9MB

Download