dcrat | ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12

Analysis

max time kernel
92s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-12-2024 13:44

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General

Target

ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Size

827KB
MD5

024abbb7e999cf09b8aee01979296d38
SHA1

f883c399426d39fa169078cd92ea3bf360bd0e6b
SHA256

ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12
SHA512

fd6cadc5814b1cd9617600f645ed304445960eb810ffd7c3e919c22bf7f80e1411354ef9a0a5183ef35aaf8e18b6e2c08a0a02e26428b78f12723b4e22a5b389
SSDEEP

12288:Qr5J4kXbiCU0qbEPGGoWfbDNz4ZH1z3gROZ84k4zizkx:3kXbiDEPGGoWbDNDEZ8342zO

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
Dcrat family
dcrat

Modifies WinLogon for persistence 2 TTPs 9 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)\\WindowsPowerShell\\lsass.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\WindowsPowerShell\\lsass.exe\", \"C:\\Windows\\es-ES\\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe\", \"C:\\Users\\Public\\Music\\explorer.exe\", \"C:\\Program Files (x86)\\Windows Mail\\fontdrvhost.exe\", \"C:\\Program Files (x86)\\Windows NT\\Accessories\\StartMenuExperienceHost.exe\", \"C:\\Recovery\\WindowsRE\\sihost.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\WindowsPowerShell\\lsass.exe\", \"C:\\Windows\\es-ES\\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe\", \"C:\\Users\\Public\\Music\\explorer.exe\", \"C:\\Program Files (x86)\\Windows Mail\\fontdrvhost.exe\", \"C:\\Program Files (x86)\\Windows NT\\Accessories\\StartMenuExperienceHost.exe\", \"C:\\Recovery\\WindowsRE\\sihost.exe\", \"C:\\Program Files\\Common Files\\microsoft shared\\VSTO\\fontdrvhost.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\WindowsPowerShell\\lsass.exe\", \"C:\\Windows\\es-ES\\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe\", \"C:\\Users\\Public\\Music\\explorer.exe\", \"C:\\Program Files (x86)\\Windows Mail\\fontdrvhost.exe\", \"C:\\Program Files (x86)\\Windows NT\\Accessories\\StartMenuExperienceHost.exe\", \"C:\\Recovery\\WindowsRE\\sihost.exe\", \"C:\\Program Files\\Common Files\\microsoft shared\\VSTO\\fontdrvhost.exe\", \"C:\\Users\\All Users\\SearchApp.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\WindowsPowerShell\\lsass.exe\", \"C:\\Windows\\es-ES\\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\WindowsPowerShell\\lsass.exe\", \"C:\\Windows\\es-ES\\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe\", \"C:\\Users\\Public\\Music\\explorer.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\WindowsPowerShell\\lsass.exe\", \"C:\\Windows\\es-ES\\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe\", \"C:\\Users\\Public\\Music\\explorer.exe\", \"C:\\Program Files (x86)\\Windows Mail\\fontdrvhost.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\WindowsPowerShell\\lsass.exe\", \"C:\\Windows\\es-ES\\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe\", \"C:\\Users\\Public\\Music\\explorer.exe\", \"C:\\Program Files (x86)\\Windows Mail\\fontdrvhost.exe\", \"C:\\Program Files (x86)\\Windows NT\\Accessories\\StartMenuExperienceHost.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Program Files (x86)\\WindowsPowerShell\\lsass.exe\", \"C:\\Windows\\es-ES\\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe\", \"C:\\Users\\Public\\Music\\explorer.exe\", \"C:\\Program Files (x86)\\Windows Mail\\fontdrvhost.exe\", \"C:\\Program Files (x86)\\Windows NT\\Accessories\\StartMenuExperienceHost.exe\", \"C:\\Recovery\\WindowsRE\\sihost.exe\", \"C:\\Program Files\\Common Files\\microsoft shared\\VSTO\\fontdrvhost.exe\", \"C:\\Users\\All Users\\SearchApp.exe\", \"C:\\Recovery\\WindowsRE\\System.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe

Process spawned unexpected child process 27 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	1632	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2776	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4436	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2704	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3496	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4408	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1860	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3356	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4248	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3588	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4884	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4068	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4192	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1948	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2856	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3844	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2904	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4860	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5064	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1532	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3660	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3900	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2532	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2696	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3272	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1156	212	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	796	212	schtasks.exe	85

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral2/memory/4864-1-0x0000000000980000-0x0000000000A56000-memory.dmp	dcrat
behavioral2/files/0x0007000000023ca6-11.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe

Executes dropped EXE 1 IoCs

pid	Process
1708	explorer.exe

Adds Run key to start application 2 TTPs 18 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SearchApp = "\"C:\\Users\\All Users\\SearchApp.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SearchApp = "\"C:\\Users\\All Users\\SearchApp.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\lsass = "\"C:\\Program Files (x86)\\WindowsPowerShell\\lsass.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12 = "\"C:\\Windows\\es-ES\\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fontdrvhost = "\"C:\\Program Files (x86)\\Windows Mail\\fontdrvhost.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sihost = "\"C:\\Recovery\\WindowsRE\\sihost.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\lsass = "\"C:\\Program Files (x86)\\WindowsPowerShell\\lsass.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\explorer = "\"C:\\Users\\Public\\Music\\explorer.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\explorer = "\"C:\\Users\\Public\\Music\\explorer.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\StartMenuExperienceHost = "\"C:\\Program Files (x86)\\Windows NT\\Accessories\\StartMenuExperienceHost.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12 = "\"C:\\Windows\\es-ES\\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fontdrvhost = "\"C:\\Program Files (x86)\\Windows Mail\\fontdrvhost.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "\"C:\\Recovery\\WindowsRE\\System.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "\"C:\\Recovery\\WindowsRE\\System.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\StartMenuExperienceHost = "\"C:\\Program Files (x86)\\Windows NT\\Accessories\\StartMenuExperienceHost.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sihost = "\"C:\\Recovery\\WindowsRE\\sihost.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fontdrvhost = "\"C:\\Program Files\\Common Files\\microsoft shared\\VSTO\\fontdrvhost.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fontdrvhost = "\"C:\\Program Files\\Common Files\\microsoft shared\\VSTO\\fontdrvhost.exe\""	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\WindowsPowerShell\lsass.exe	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
File created	C:\Program Files (x86)\Windows Mail\5b884080fd4f94	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
File created	C:\Program Files (x86)\Windows NT\Accessories\StartMenuExperienceHost.exe	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
File created	C:\Program Files (x86)\Windows NT\Accessories\55b276f4edf653	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
File created	C:\Program Files\Common Files\microsoft shared\VSTO\fontdrvhost.exe	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
File created	C:\Program Files\Common Files\microsoft shared\VSTO\5b884080fd4f94	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
File created	C:\Program Files (x86)\WindowsPowerShell\lsass.exe	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
File created	C:\Program Files (x86)\Windows Mail\fontdrvhost.exe	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
File created	C:\Program Files (x86)\WindowsPowerShell\6203df4a6bafc7	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\es-ES\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
File created	C:\Windows\es-ES\d3336390654804	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 27 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1532	schtasks.exe
1156	schtasks.exe
3588	schtasks.exe
1860	schtasks.exe
4860	schtasks.exe
796	schtasks.exe
3496	schtasks.exe
3844	schtasks.exe
2532	schtasks.exe
3660	schtasks.exe
4436	schtasks.exe
5064	schtasks.exe
4408	schtasks.exe
4192	schtasks.exe
2904	schtasks.exe
2696	schtasks.exe
3272	schtasks.exe
2776	schtasks.exe
4884	schtasks.exe
4068	schtasks.exe
4248	schtasks.exe
1948	schtasks.exe
2856	schtasks.exe
3900	schtasks.exe
1632	schtasks.exe
2704	schtasks.exe
3356	schtasks.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
1708	explorer.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
Token: SeDebugPrivilege	1708	explorer.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4864 wrote to memory of 4372	4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe	113
PID 4864 wrote to memory of 4372	4864	ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe	113
PID 4372 wrote to memory of 3428	4372	cmd.exe	115
PID 4372 wrote to memory of 3428	4372	cmd.exe	115
PID 4372 wrote to memory of 1708	4372	cmd.exe	117
PID 4372 wrote to memory of 1708	4372	cmd.exe	117

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\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe
"C:\Users\Admin\AppData\Local\Temp\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.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:4864
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\nP0UJaaaqy.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4372
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:3428
- - C:\Users\Public\Music\explorer.exe
    "C:\Users\Public\Music\explorer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1708

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\WindowsPowerShell\lsass.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1632

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Program Files (x86)\WindowsPowerShell\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2776

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\WindowsPowerShell\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4436

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12a" /sc MINUTE /mo 10 /tr "'C:\Windows\es-ES\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2704

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12" /sc ONLOGON /tr "'C:\Windows\es-ES\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3496

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12a" /sc MINUTE /mo 8 /tr "'C:\Windows\es-ES\ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4408

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 9 /tr "'C:\Users\Public\Music\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1860

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Users\Public\Music\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3356

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 13 /tr "'C:\Users\Public\Music\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4248

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows Mail\fontdrvhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3588

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Mail\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4884

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Windows Mail\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4068

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Windows NT\Accessories\StartMenuExperienceHost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4192

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\Accessories\StartMenuExperienceHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1948

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows NT\Accessories\StartMenuExperienceHost.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 "sihosts" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\sihost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3844

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\sihost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2904

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\sihost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4860

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 7 /tr "'C:\Program Files\Common Files\microsoft shared\VSTO\fontdrvhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5064

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Program Files\Common Files\microsoft shared\VSTO\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1532

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 5 /tr "'C:\Program Files\Common Files\microsoft shared\VSTO\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3660

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 10 /tr "'C:\Users\All Users\SearchApp.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3900

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Users\All Users\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2532

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 6 /tr "'C:\Users\All Users\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2696

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3272

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1156

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:796

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Windows NT\Accessories\StartMenuExperienceHost.exe

Filesize
827KB

MD5
024abbb7e999cf09b8aee01979296d38

SHA1
f883c399426d39fa169078cd92ea3bf360bd0e6b

SHA256
ab9a6a7f554c6eaf3b6285fb12351ee81132180581f39b5c19019870a7162b12

SHA512
fd6cadc5814b1cd9617600f645ed304445960eb810ffd7c3e919c22bf7f80e1411354ef9a0a5183ef35aaf8e18b6e2c08a0a02e26428b78f12723b4e22a5b389

Download Submit
C:\Users\Admin\AppData\Local\Temp\nP0UJaaaqy.bat

Filesize
199B

MD5
8369125936402536ac574908eef4f082

SHA1
2ca98c957771389b58ba20b5fd1ce12ef9375e21

SHA256
8a8e3a164ded61112cc17ae7c894f5c4f66923f0a70c2198bc482ff94cb58d7a

SHA512
95d49424371f2817f3e1ad20b18b5d0c9fcaa472f91f17a6f386da4d8d58774086a3ffd74867dced2cbfa1e3eb1b8c2fe46389bd0ba3940bfbac8529161ed824

Download Submit
memory/4864-0-0x00007FFA9AB13000-0x00007FFA9AB15000-memory.dmp

Filesize
8KB

Download
memory/4864-1-0x0000000000980000-0x0000000000A56000-memory.dmp

Filesize
856KB

Download
memory/4864-2-0x00007FFA9AB10000-0x00007FFA9B5D1000-memory.dmp

Filesize
10.8MB

Download
memory/4864-26-0x00007FFA9AB10000-0x00007FFA9B5D1000-memory.dmp

Filesize
10.8MB

Download