glupteba | 43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e

General

Target

43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Size

4.1MB
MD5

75359bbdaf5a442553d2dd1286a1d941
SHA1

a52046c9ce321bd2eb4fbb0c52d078983cd4c405
SHA256

43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e
SHA512

7c728d7f940652c62cfffb377892d9716e1ee1e4eb37c34097a1105f5f0ce42a96b1647ec3fb6f9593a4c7f5658457f4ac4bac227cdd00b88ef4418b9e8fd563
SSDEEP

98304:Jv8VP4qda1AwlCuF+X7nTfk2P7Px/Hvgk/7FHeVAkEdgGt0WI3TL+T:dq8fviU4x/YYeuky0Ve

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit trojan

Malware Config

Signatures

Glupteba
Glupteba is a modular loader written in Golang with various components.
loader dropper glupteba

Glupteba payload 17 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3076-121-0x0000000005170000-0x00000000059E7000-memory.dmp	family_glupteba
behavioral1/memory/3076-122-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/4700-127-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2468-135-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2468-136-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2468-137-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2468-138-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2468-139-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2468-140-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2468-141-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2468-142-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2468-143-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2468-144-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2468-145-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2468-146-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2468-147-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba
behavioral1/memory/2468-148-0x0000000000400000-0x0000000002F4E000-memory.dmp	family_glupteba

Windows security bypass 2 TTPs 7 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe = "0"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe

Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

3160 netsh.exe
Executes dropped EXE 2 IoCs

Processes:

csrss.exeinjector.exe

pid process

2468 csrss.exe
4740 injector.exe

pid	process
3160	netsh.exe

pid	process
2468	csrss.exe
4740	injector.exe

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe = "0"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3346939869-2835594282-3775165920-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3346939869-2835594282-3775165920-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	csrss.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Manipulates WinMonFS driver. 1 IoCs
Roottkits write to WinMonFS to hide directories/files from being detected.
rootkit evasion

Processes:

csrss.exe

description ioc process

File opened for modification \??\WinMonFS csrss.exe
Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

System Information Discovery
T1082

Processes:

43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe

description ioc process

File opened (read-only) \??\VBoxMiniRdrDN 43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe

description	ioc	process
File opened for modification	\??\WinMonFS	csrss.exe

description	ioc	process
File opened (read-only)	\??\VBoxMiniRdrDN	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe

Drops file in Windows directory 2 IoCs

Processes:

43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe

description	ioc	process
File opened for modification	C:\Windows\rss	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
File created	C:\Windows\rss\csrss.exe	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe

Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1992 schtasks.exe
3108 schtasks.exe

pid	process
1992	schtasks.exe
3108	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

csrss.exe43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exenetsh.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-181 = "Mountain Daylight Time (Mexico)"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-842 = "Argentina Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1802 = "Line Islands Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-384 = "Namibia Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1931 = "Russia TZ 11 Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2572 = "Turks and Caicos Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Key created	\REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Control	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-221 = "Alaskan Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2001 = "Cabo Verde Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1822 = "Russia TZ 1 Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1912 = "Russia TZ 10 Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-448 = "Azerbaijan Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-452 = "Caucasus Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-362 = "GTB Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1661 = "Bahia Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-571 = "China Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-672 = "AUS Eastern Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1832 = "Russia TZ 2 Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2512 = "Lord Howe Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-342 = "Egypt Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time"	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exeinjector.execsrss.exe

pid	process
3076	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
3076	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
4700	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
4700	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
4700	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
4700	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
4700	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
4700	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
4700	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
4700	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
4700	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
4700	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
2468	csrss.exe
2468	csrss.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
2468	csrss.exe
2468	csrss.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	3076	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Token: SeImpersonatePrivilege	3076	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
Token: SeSystemEnvironmentPrivilege	2468	csrss.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.execmd.execsrss.exe

description	pid	process	target process
PID 4700 wrote to memory of 1656	4700	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe	cmd.exe
PID 4700 wrote to memory of 1656	4700	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe	cmd.exe
PID 1656 wrote to memory of 3160	1656	cmd.exe	netsh.exe
PID 1656 wrote to memory of 3160	1656	cmd.exe	netsh.exe
PID 4700 wrote to memory of 2468	4700	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe	csrss.exe
PID 4700 wrote to memory of 2468	4700	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe	csrss.exe
PID 4700 wrote to memory of 2468	4700	43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe	csrss.exe
PID 2468 wrote to memory of 4740	2468	csrss.exe	injector.exe
PID 2468 wrote to memory of 4740	2468	csrss.exe	injector.exe

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\43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
"C:\Users\Admin\AppData\Local\Temp\43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3076

C:\Users\Admin\AppData\Local\Temp\43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe
"C:\Users\Admin\AppData\Local\Temp\43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e.exe"
2⤵
- Windows security bypass
- Windows security modification
- Adds Run key to start application
- Checks for VirtualBox DLLs, possible anti-VM trick
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4700

C:\Windows\System32\cmd.exe
C:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"
3⤵
- Suspicious use of WriteProcessMemory
PID:1656

C:\Windows\system32\netsh.exe
netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes
4⤵
- Modifies Windows Firewall
- Modifies data under HKEY_USERS
PID:3160

C:\Windows\rss\csrss.exe
C:\Windows\rss\csrss.exe
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2468

C:\Windows\SYSTEM32\schtasks.exe
schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
4⤵
- Creates scheduled task(s)
PID:1992

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:2844

C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll
4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:4740

C:\Windows\SYSTEM32\schtasks.exe
schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
4⤵
- Creates scheduled task(s)
PID:3108

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Disabling Security Tools

2

T1089

Modify Registry

3

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1

T1102

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
Filesize
281KB

MD5
d98e33b66343e7c96158444127a117f6

SHA1
bb716c5509a2bf345c6c1152f6e3e1452d39d50d

SHA256
5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

SHA512
705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

Download Submit
C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
Filesize
281KB

MD5
d98e33b66343e7c96158444127a117f6

SHA1
bb716c5509a2bf345c6c1152f6e3e1452d39d50d

SHA256
5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

SHA512
705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

Download Submit
C:\Windows\rss\csrss.exe
Filesize
4.1MB

MD5
75359bbdaf5a442553d2dd1286a1d941

SHA1
a52046c9ce321bd2eb4fbb0c52d078983cd4c405

SHA256
43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e

SHA512
7c728d7f940652c62cfffb377892d9716e1ee1e4eb37c34097a1105f5f0ce42a96b1647ec3fb6f9593a4c7f5658457f4ac4bac227cdd00b88ef4418b9e8fd563

Download Submit
C:\Windows\rss\csrss.exe
Filesize
4.1MB

MD5
75359bbdaf5a442553d2dd1286a1d941

SHA1
a52046c9ce321bd2eb4fbb0c52d078983cd4c405

SHA256
43d0cbd83b6a0a296cd1e49260339d591a22b60209261fbae1c39b6af51df78e

SHA512
7c728d7f940652c62cfffb377892d9716e1ee1e4eb37c34097a1105f5f0ce42a96b1647ec3fb6f9593a4c7f5658457f4ac4bac227cdd00b88ef4418b9e8fd563

Download Submit
memory/2468-138-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2468-141-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2468-148-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2468-135-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2468-136-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2468-137-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2468-147-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2468-139-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2468-140-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2468-146-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2468-142-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2468-143-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2468-144-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/2468-145-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/3076-121-0x0000000005170000-0x00000000059E7000-memory.dmp

Filesize
8.5MB

Download
memory/3076-122-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download
memory/4700-127-0x0000000000400000-0x0000000002F4E000-memory.dmp

Filesize
43.3MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads