glupteba | 011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c

General

Target

011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Size

4.1MB
MD5

1c1c5b836f7d622670effdaa717762c4
SHA1

a41265b35dfb48a5f341f92dc67203bebe644874
SHA256

011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c
SHA512

58b759a22abc2ae4b3a9eccda40f91c581a9811947f5ad04cdfa18b7088561dbeba98b53af3805686fb9734314f5cadceb81584204b2cebaca5805959229bf62
SSDEEP

98304:WwBHi5FsLxkWyDJ6to4G4vUv6ywdiLJHCt4xilFJ8A1vh:7C4GDcGf1vJwIAqKPdh

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/3680-118-0x0000000002DF0000-0x0000000003667000-memory.dmp	family_glupteba
behavioral1/memory/3680-120-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4072-124-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4308-132-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4308-133-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4308-134-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4308-135-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4308-136-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4308-137-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4308-138-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4308-139-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4308-140-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4308-141-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4308-142-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4308-143-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4308-144-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4308-145-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba

Windows security bypass 2 TTPs 7 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe = "0"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe

Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4812 netsh.exe
Executes dropped EXE 2 IoCs

Processes:

csrss.exeinjector.exe

pid process

4308 csrss.exe
3040 injector.exe

pid	process
4812	netsh.exe

pid	process
4308	csrss.exe
3040	injector.exe

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe = "0"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.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\""	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.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:

011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe

description ioc process

File opened (read-only) \??\VBoxMiniRdrDN 011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe

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

description	ioc	process
File opened (read-only)	\??\VBoxMiniRdrDN	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe

Drops file in Windows directory 2 IoCs

Processes:

011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe

description	ioc	process
File created	C:\Windows\rss\csrss.exe	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
File opened for modification	C:\Windows\rss	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.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

4660 schtasks.exe
3740 schtasks.exe

pid	process
4660	schtasks.exe
3740	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.execsrss.exenetsh.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1802 = "Line Islands Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2792 = "Novosibirsk Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-631 = "Tokyo Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-332 = "E. Europe Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	csrss.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,-2492 = "Aus Central W. Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-384 = "Namibia Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1861 = "Russia TZ 6 Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-742 = "New Zealand Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.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,-142 = "Canada Central Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1911 = "Russia TZ 10 Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-752 = "Tonga Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Key created	\REGISTRY\USER\.DEFAULT\SYSTEM	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-691 = "Tasmania Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-451 = "Caucasus Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-892 = "Morocco Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-11 = "Azores Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-412 = "E. Africa Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-871 = "Pakistan Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Key created	\REGISTRY\USER\.DEFAULT\System\CurrentControlSet	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-221 = "Alaskan Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-601 = "Taipei Daylight Time"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.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"	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exeinjector.execsrss.exe

pid	process
3680	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
3680	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
4072	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
4072	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
4072	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
4072	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
4072	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
4072	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
4072	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
4072	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
4072	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
4072	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
4308	csrss.exe
4308	csrss.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
4308	csrss.exe
4308	csrss.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe
3040	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	3680	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Token: SeImpersonatePrivilege	3680	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
Token: SeSystemEnvironmentPrivilege	4308	csrss.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.execmd.execsrss.exe

description	pid	process	target process
PID 4072 wrote to memory of 2088	4072	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe	cmd.exe
PID 4072 wrote to memory of 2088	4072	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe	cmd.exe
PID 2088 wrote to memory of 4812	2088	cmd.exe	netsh.exe
PID 2088 wrote to memory of 4812	2088	cmd.exe	netsh.exe
PID 4072 wrote to memory of 4308	4072	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe	csrss.exe
PID 4072 wrote to memory of 4308	4072	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe	csrss.exe
PID 4072 wrote to memory of 4308	4072	011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe	csrss.exe
PID 4308 wrote to memory of 3040	4308	csrss.exe	injector.exe
PID 4308 wrote to memory of 3040	4308	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\011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
"C:\Users\Admin\AppData\Local\Temp\011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3680

C:\Users\Admin\AppData\Local\Temp\011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.exe
"C:\Users\Admin\AppData\Local\Temp\011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c.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:4072

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:2088

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:4812

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:4308

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:4660

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:1248

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:3040

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:3740

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
1c1c5b836f7d622670effdaa717762c4

SHA1
a41265b35dfb48a5f341f92dc67203bebe644874

SHA256
011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c

SHA512
58b759a22abc2ae4b3a9eccda40f91c581a9811947f5ad04cdfa18b7088561dbeba98b53af3805686fb9734314f5cadceb81584204b2cebaca5805959229bf62

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

MD5
1c1c5b836f7d622670effdaa717762c4

SHA1
a41265b35dfb48a5f341f92dc67203bebe644874

SHA256
011b3f96a7f3e7e7c839f3bc86f4a30b6b40b76d9450b0a241cac43099c9ae7c

SHA512
58b759a22abc2ae4b3a9eccda40f91c581a9811947f5ad04cdfa18b7088561dbeba98b53af3805686fb9734314f5cadceb81584204b2cebaca5805959229bf62

Download Submit
memory/3680-118-0x0000000002DF0000-0x0000000003667000-memory.dmp

Filesize
8.5MB

Download
memory/3680-120-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4072-124-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4308-135-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4308-139-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4308-134-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4308-132-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4308-136-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4308-137-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4308-138-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4308-133-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4308-140-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4308-141-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4308-142-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4308-143-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4308-144-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4308-145-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads