dcrat | c1fb621cbb84ba538603cae73960db7969ec4bde877e5692241c82ea25bdf644

Analysis

max time kernel
140s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22/05/2024, 09:45

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
a452777147dc02f5d8ccacfc0502ac7c.exe
Size 828KB
Sample240522-lrkywsba9t
SHA256 c1fb621cbb84ba538603cae73960db7969ec4bde877e5692241c82ea25bdf644
MD5 a452777147dc02f5d8ccacfc0502ac7c
SHA1 da8810335c641f55872b90a6ea7f178a0875721c
SHA512 5015d12dac1a4a6825dcd01adf04b9ea307b3654e851bf07e41087f4ebb1b744b67c397eb0af282b3452cae5849266c7e00c2e41537795d7c78e5c043012d760
SSDEEP 12288:jJx18sm9InH/pOz0KkYXPFSdj+ZygwBEMjdvcGtJN1adr:jBDmqnH/G0KkYXKcedvceN1ar
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

dcrat infostealer persistence rat

Malware Config

Signatures

DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat

Modifies WinLogon for persistence 2 TTPs 12 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\\Windows Mail\\RuntimeBroker.exe\", \"C:\\Program Files\\Windows Media Player\\fr-FR\\fontdrvhost.exe\", \"C:\\Users\\Admin\\upfc.exe\", \"C:\\Users\\Default\\Videos\\OfficeClickToRun.exe\", \"C:\\Program Files\\MsEdgeCrashpad\\reports\\taskhostw.exe\", \"C:\\Program Files\\Microsoft Office\\root\\Office16\\csrss.exe\", \"C:\\Windows\\schemas\\TextInputHost.exe\", \"C:\\Program Files\\Uninstall Information\\msedge.exe\", \"C:\\Users\\Default User\\a452777147dc02f5d8ccacfc0502ac7c.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files\\Windows Mail\\RuntimeBroker.exe\", \"C:\\Program Files\\Windows Media Player\\fr-FR\\fontdrvhost.exe\", \"C:\\Users\\Admin\\upfc.exe\", \"C:\\Users\\Default\\Videos\\OfficeClickToRun.exe\", \"C:\\Program Files\\MsEdgeCrashpad\\reports\\taskhostw.exe\", \"C:\\Program Files\\Microsoft Office\\root\\Office16\\csrss.exe\", \"C:\\Windows\\schemas\\TextInputHost.exe\", \"C:\\Program Files\\Uninstall Information\\msedge.exe\", \"C:\\Users\\Default User\\a452777147dc02f5d8ccacfc0502ac7c.exe\", \"C:\\Recovery\\WindowsRE\\fontdrvhost.exe\", \"C:\\Program Files (x86)\\Common Files\\Services\\sysmon.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files\\Windows Mail\\RuntimeBroker.exe\", \"C:\\Program Files\\Windows Media Player\\fr-FR\\fontdrvhost.exe\", \"C:\\Users\\Admin\\upfc.exe\", \"C:\\Users\\Default\\Videos\\OfficeClickToRun.exe\", \"C:\\Program Files\\MsEdgeCrashpad\\reports\\taskhostw.exe\", \"C:\\Program Files\\Microsoft Office\\root\\Office16\\csrss.exe\", \"C:\\Windows\\schemas\\TextInputHost.exe\", \"C:\\Program Files\\Uninstall Information\\msedge.exe\", \"C:\\Users\\Default User\\a452777147dc02f5d8ccacfc0502ac7c.exe\", \"C:\\Recovery\\WindowsRE\\fontdrvhost.exe\", \"C:\\Program Files (x86)\\Common Files\\Services\\sysmon.exe\", \"C:\\Program Files (x86)\\Reference Assemblies\\Microsoft\\dllhost.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files\\Windows Mail\\RuntimeBroker.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files\\Windows Mail\\RuntimeBroker.exe\", \"C:\\Program Files\\Windows Media Player\\fr-FR\\fontdrvhost.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files\\Windows Mail\\RuntimeBroker.exe\", \"C:\\Program Files\\Windows Media Player\\fr-FR\\fontdrvhost.exe\", \"C:\\Users\\Admin\\upfc.exe\", \"C:\\Users\\Default\\Videos\\OfficeClickToRun.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files\\Windows Mail\\RuntimeBroker.exe\", \"C:\\Program Files\\Windows Media Player\\fr-FR\\fontdrvhost.exe\", \"C:\\Users\\Admin\\upfc.exe\", \"C:\\Users\\Default\\Videos\\OfficeClickToRun.exe\", \"C:\\Program Files\\MsEdgeCrashpad\\reports\\taskhostw.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files\\Windows Mail\\RuntimeBroker.exe\", \"C:\\Program Files\\Windows Media Player\\fr-FR\\fontdrvhost.exe\", \"C:\\Users\\Admin\\upfc.exe\", \"C:\\Users\\Default\\Videos\\OfficeClickToRun.exe\", \"C:\\Program Files\\MsEdgeCrashpad\\reports\\taskhostw.exe\", \"C:\\Program Files\\Microsoft Office\\root\\Office16\\csrss.exe\", \"C:\\Windows\\schemas\\TextInputHost.exe\", \"C:\\Program Files\\Uninstall Information\\msedge.exe\", \"C:\\Users\\Default User\\a452777147dc02f5d8ccacfc0502ac7c.exe\", \"C:\\Recovery\\WindowsRE\\fontdrvhost.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files\\Windows Mail\\RuntimeBroker.exe\", \"C:\\Program Files\\Windows Media Player\\fr-FR\\fontdrvhost.exe\", \"C:\\Users\\Admin\\upfc.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files\\Windows Mail\\RuntimeBroker.exe\", \"C:\\Program Files\\Windows Media Player\\fr-FR\\fontdrvhost.exe\", \"C:\\Users\\Admin\\upfc.exe\", \"C:\\Users\\Default\\Videos\\OfficeClickToRun.exe\", \"C:\\Program Files\\MsEdgeCrashpad\\reports\\taskhostw.exe\", \"C:\\Program Files\\Microsoft Office\\root\\Office16\\csrss.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files\\Windows Mail\\RuntimeBroker.exe\", \"C:\\Program Files\\Windows Media Player\\fr-FR\\fontdrvhost.exe\", \"C:\\Users\\Admin\\upfc.exe\", \"C:\\Users\\Default\\Videos\\OfficeClickToRun.exe\", \"C:\\Program Files\\MsEdgeCrashpad\\reports\\taskhostw.exe\", \"C:\\Program Files\\Microsoft Office\\root\\Office16\\csrss.exe\", \"C:\\Windows\\schemas\\TextInputHost.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files\\Windows Mail\\RuntimeBroker.exe\", \"C:\\Program Files\\Windows Media Player\\fr-FR\\fontdrvhost.exe\", \"C:\\Users\\Admin\\upfc.exe\", \"C:\\Users\\Default\\Videos\\OfficeClickToRun.exe\", \"C:\\Program Files\\MsEdgeCrashpad\\reports\\taskhostw.exe\", \"C:\\Program Files\\Microsoft Office\\root\\Office16\\csrss.exe\", \"C:\\Windows\\schemas\\TextInputHost.exe\", \"C:\\Program Files\\Uninstall Information\\msedge.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe

Process spawned unexpected child process 36 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	5036	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2540	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2084	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	544	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2884	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4712	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1984	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4196	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3984	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1708	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1216	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1352	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1928	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	752	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3696	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3732	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1524	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5088	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1480	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2700	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2212	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3940	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1944	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3528	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	392	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	952	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1836	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1804	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2784	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3184	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4984	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	960	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	984	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1964	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3948	1660	schtasks.exe	92
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1444	1660	schtasks.exe	92

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral2/memory/3080-0-0x0000000000840000-0x0000000000916000-memory.dmp	dcrat
behavioral2/files/0x00070000000235ef-11.dat	dcrat

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	a452777147dc02f5d8ccacfc0502ac7c.exe

Executes dropped EXE 1 IoCs

pid	Process
3504	RuntimeBroker.exe

Adds Run key to start application 2 TTPs 24 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\taskhostw = "\"C:\\Program Files\\MsEdgeCrashpad\\reports\\taskhostw.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\TextInputHost = "\"C:\\Windows\\schemas\\TextInputHost.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\msedge = "\"C:\\Program Files\\Uninstall Information\\msedge.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OfficeClickToRun = "\"C:\\Users\\Default\\Videos\\OfficeClickToRun.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fontdrvhost = "\"C:\\Program Files\\Windows Media Player\\fr-FR\\fontdrvhost.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\upfc = "\"C:\\Users\\Admin\\upfc.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Program Files\\Microsoft Office\\root\\Office16\\csrss.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sysmon = "\"C:\\Program Files (x86)\\Common Files\\Services\\sysmon.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dllhost = "\"C:\\Program Files (x86)\\Reference Assemblies\\Microsoft\\dllhost.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dllhost = "\"C:\\Program Files (x86)\\Reference Assemblies\\Microsoft\\dllhost.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Program Files\\Windows Mail\\RuntimeBroker.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OfficeClickToRun = "\"C:\\Users\\Default\\Videos\\OfficeClickToRun.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\taskhostw = "\"C:\\Program Files\\MsEdgeCrashpad\\reports\\taskhostw.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Program Files\\Microsoft Office\\root\\Office16\\csrss.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\TextInputHost = "\"C:\\Windows\\schemas\\TextInputHost.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a452777147dc02f5d8ccacfc0502ac7c = "\"C:\\Users\\Default User\\a452777147dc02f5d8ccacfc0502ac7c.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a452777147dc02f5d8ccacfc0502ac7c = "\"C:\\Users\\Default User\\a452777147dc02f5d8ccacfc0502ac7c.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fontdrvhost = "\"C:\\Recovery\\WindowsRE\\fontdrvhost.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fontdrvhost = "\"C:\\Program Files\\Windows Media Player\\fr-FR\\fontdrvhost.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sysmon = "\"C:\\Program Files (x86)\\Common Files\\Services\\sysmon.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\upfc = "\"C:\\Users\\Admin\\upfc.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\msedge = "\"C:\\Program Files\\Uninstall Information\\msedge.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fontdrvhost = "\"C:\\Recovery\\WindowsRE\\fontdrvhost.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\Program Files\\Windows Mail\\RuntimeBroker.exe\""	a452777147dc02f5d8ccacfc0502ac7c.exe

Drops file in Program Files directory 15 IoCs

description	ioc	Process
File created	C:\Program Files\Windows Media Player\fr-FR\fontdrvhost.exe	a452777147dc02f5d8ccacfc0502ac7c.exe
File created	C:\Program Files\Uninstall Information\61a52ddc9dd915	a452777147dc02f5d8ccacfc0502ac7c.exe
File created	C:\Program Files (x86)\Common Files\Services\sysmon.exe	a452777147dc02f5d8ccacfc0502ac7c.exe
File opened for modification	C:\Program Files\Windows Mail\RuntimeBroker.exe	a452777147dc02f5d8ccacfc0502ac7c.exe
File created	C:\Program Files\Windows Media Player\fr-FR\5b884080fd4f94	a452777147dc02f5d8ccacfc0502ac7c.exe
File created	C:\Program Files\MsEdgeCrashpad\reports\ea9f0e6c9e2dcd	a452777147dc02f5d8ccacfc0502ac7c.exe
File created	C:\Program Files\Uninstall Information\msedge.exe	a452777147dc02f5d8ccacfc0502ac7c.exe
File created	C:\Program Files (x86)\Reference Assemblies\Microsoft\5940a34987c991	a452777147dc02f5d8ccacfc0502ac7c.exe
File created	C:\Program Files\Windows Mail\9e8d7a4ca61bd9	a452777147dc02f5d8ccacfc0502ac7c.exe
File created	C:\Program Files\Microsoft Office\root\Office16\csrss.exe	a452777147dc02f5d8ccacfc0502ac7c.exe
File created	C:\Program Files\Microsoft Office\root\Office16\886983d96e3d3e	a452777147dc02f5d8ccacfc0502ac7c.exe
File created	C:\Program Files (x86)\Reference Assemblies\Microsoft\dllhost.exe	a452777147dc02f5d8ccacfc0502ac7c.exe
File created	C:\Program Files\Windows Mail\RuntimeBroker.exe	a452777147dc02f5d8ccacfc0502ac7c.exe
File created	C:\Program Files (x86)\Common Files\Services\121e5b5079f7c0	a452777147dc02f5d8ccacfc0502ac7c.exe
File created	C:\Program Files\MsEdgeCrashpad\reports\taskhostw.exe	a452777147dc02f5d8ccacfc0502ac7c.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\schemas\TextInputHost.exe	a452777147dc02f5d8ccacfc0502ac7c.exe
File created	C:\Windows\schemas\22eafd247d37c3	a452777147dc02f5d8ccacfc0502ac7c.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 36 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
3184	schtasks.exe
1352	schtasks.exe
952	schtasks.exe
2212	schtasks.exe
1836	schtasks.exe
2784	schtasks.exe
2084	schtasks.exe
1524	schtasks.exe
752	schtasks.exe
1944	schtasks.exe
1984	schtasks.exe
1708	schtasks.exe
5088	schtasks.exe
1480	schtasks.exe
392	schtasks.exe
3948	schtasks.exe
1444	schtasks.exe
2540	schtasks.exe
2884	schtasks.exe
2700	schtasks.exe
544	schtasks.exe
4196	schtasks.exe
3528	schtasks.exe
5036	schtasks.exe
3984	schtasks.exe
1964	schtasks.exe
1216	schtasks.exe
984	schtasks.exe
3696	schtasks.exe
3732	schtasks.exe
3940	schtasks.exe
1804	schtasks.exe
4984	schtasks.exe
960	schtasks.exe
4712	schtasks.exe
1928	schtasks.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000_Classes\Local Settings	a452777147dc02f5d8ccacfc0502ac7c.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3080	a452777147dc02f5d8ccacfc0502ac7c.exe
3080	a452777147dc02f5d8ccacfc0502ac7c.exe
3080	a452777147dc02f5d8ccacfc0502ac7c.exe
3080	a452777147dc02f5d8ccacfc0502ac7c.exe
3080	a452777147dc02f5d8ccacfc0502ac7c.exe
3080	a452777147dc02f5d8ccacfc0502ac7c.exe
3080	a452777147dc02f5d8ccacfc0502ac7c.exe
3504	RuntimeBroker.exe
3504	RuntimeBroker.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3080	a452777147dc02f5d8ccacfc0502ac7c.exe
Token: SeDebugPrivilege	3504	RuntimeBroker.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3080 wrote to memory of 3028	3080	a452777147dc02f5d8ccacfc0502ac7c.exe	129
PID 3080 wrote to memory of 3028	3080	a452777147dc02f5d8ccacfc0502ac7c.exe	129
PID 3028 wrote to memory of 4292	3028	cmd.exe	131
PID 3028 wrote to memory of 4292	3028	cmd.exe	131
PID 3028 wrote to memory of 3504	3028	cmd.exe	139
PID 3028 wrote to memory of 3504	3028	cmd.exe	139

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\a452777147dc02f5d8ccacfc0502ac7c.exe
"C:\Users\Admin\AppData\Local\Temp\a452777147dc02f5d8ccacfc0502ac7c.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3080
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\3SQ25znRFl.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3028
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:4292
- - C:\Program Files\Windows Mail\RuntimeBroker.exe
    "C:\Program Files\Windows Mail\RuntimeBroker.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3504

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
- Creates scheduled task(s)
PID:2540

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
- Creates scheduled task(s)
PID:5036

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
- Creates scheduled task(s)
PID:2084

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 13 /tr "'C:\Program Files\Windows Media Player\fr-FR\fontdrvhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:544

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Program Files\Windows Media Player\fr-FR\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2884

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 9 /tr "'C:\Program Files\Windows Media Player\fr-FR\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4712

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 8 /tr "'C:\Users\Admin\upfc.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1984

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\Users\Admin\upfc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4196

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\upfc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3984

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 13 /tr "'C:\Users\Default\Videos\OfficeClickToRun.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1352

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Users\Default\Videos\OfficeClickToRun.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1216

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 8 /tr "'C:\Users\Default\Videos\OfficeClickToRun.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1708

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 9 /tr "'C:\Program Files\MsEdgeCrashpad\reports\taskhostw.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1928

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Program Files\MsEdgeCrashpad\reports\taskhostw.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:752

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 7 /tr "'C:\Program Files\MsEdgeCrashpad\reports\taskhostw.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3696

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Program Files\Microsoft Office\root\Office16\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3732

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Microsoft Office\root\Office16\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1524

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 10 /tr "'C:\Program Files\Microsoft Office\root\Office16\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:5088

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 13 /tr "'C:\Windows\schemas\TextInputHost.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1480

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TextInputHost" /sc ONLOGON /tr "'C:\Windows\schemas\TextInputHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2700

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 6 /tr "'C:\Windows\schemas\TextInputHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2212

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 7 /tr "'C:\Program Files\Uninstall Information\msedge.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3940

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "msedge" /sc ONLOGON /tr "'C:\Program Files\Uninstall Information\msedge.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1944

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 10 /tr "'C:\Program Files\Uninstall Information\msedge.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3528

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "a452777147dc02f5d8ccacfc0502ac7ca" /sc MINUTE /mo 13 /tr "'C:\Users\Default User\a452777147dc02f5d8ccacfc0502ac7c.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:392

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "a452777147dc02f5d8ccacfc0502ac7c" /sc ONLOGON /tr "'C:\Users\Default User\a452777147dc02f5d8ccacfc0502ac7c.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:952

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "a452777147dc02f5d8ccacfc0502ac7ca" /sc MINUTE /mo 13 /tr "'C:\Users\Default User\a452777147dc02f5d8ccacfc0502ac7c.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1836

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1804

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2784

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3184

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Common Files\Services\sysmon.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:4984

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Program Files (x86)\Common Files\Services\sysmon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:960

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Common Files\Services\sysmon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:984

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\dllhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1964

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3948

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1444

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4200,i,10373433614523925616,13586256558317053467,262144 --variations-seed-version --mojo-platform-channel-handle=4028 /prefetch:8
1⤵
PID:1928

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

taskhostw.exe

Path C:\Program Files\MsEdgeCrashpad\reports\taskhostw.exe
Size 828KB
SHA256 c1fb621cbb84ba538603cae73960db7969ec4bde877e5692241c82ea25bdf644
MD5 a452777147dc02f5d8ccacfc0502ac7c
SHA1 da8810335c641f55872b90a6ea7f178a0875721c
SHA512 5015d12dac1a4a6825dcd01adf04b9ea307b3654e851bf07e41087f4ebb1b744b67c397eb0af282b3452cae5849266c7e00c2e41537795d7c78e5c043012d760
SSDEEP 12288:jJx18sm9InH/pOz0KkYXPFSdj+ZygwBEMjdvcGtJN1adr:jBDmqnH/G0KkYXKcedvceN1ar
MD5 SHA1 SHA512 SSDEEP

Submit Download

3SQ25znRFl.bat

Path C:\Users\Admin\AppData\Local\Temp\3SQ25znRFl.bat
Size 212B
SHA256 94635ff2cf2102275105db85aec2a582f849fb8f7db72142f2192b8f9357544a
MD5 8d021e01f20b8d13545d380b81124dee
SHA1 3c70382002f6ddddaf7262a37de8d8be6c9514cf
SHA512 cd5ee0ffa1b089c1812b6c2d74ac68037d717e6c813bad6d080a00cb011b8873e23ab1e3379e52287db46a4ed4879e77ea38ee223bf16bd152ebd1e7aaf82e7b
MD5 SHA1 SHA512

Submit Download

memory/3080-0-0x0000000000840000-0x0000000000916000-memory.dmp

Download

memory/3080-1-0x00007FF939B93000-0x00007FF939B95000-memory.dmp

Download

memory/3080-4-0x00007FF939B90000-0x00007FF93A651000-memory.dmp

Download

memory/3080-32-0x00007FF939B90000-0x00007FF93A651000-memory.dmp

Download