glupteba | d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59

General

Target

d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Size

4.1MB
MD5

57c64afea473e0c649b4254f61ae3fa2
SHA1

4d1199138a03369ca0fdcff2d69a4cacf486b803
SHA256

d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59
SHA512

9b7db6f67f5709310b657c1f75b5442c6a3597b4d681dc8f8bd01180fd19e3c316571411ee734db556c2dfeacdded72890931e67dd7b3a4eeb557d10a4f5cde2
SSDEEP

98304:rvpOWouYO4mCfghlxU0b33zKayfkyhq08W/:rvAzuYO4JyHaFq+/

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit trojan upx

Malware Config

Signatures

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

Glupteba payload 16 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2312-122-0x0000000003020000-0x0000000003897000-memory.dmp	family_glupteba
behavioral1/memory/2312-123-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1492-125-0x0000000002FB0000-0x0000000003827000-memory.dmp	family_glupteba
behavioral1/memory/1492-129-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1296-137-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1296-138-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1296-139-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1296-140-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1296-141-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1296-142-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1296-143-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1296-144-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1296-145-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1296-146-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1296-147-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1296-154-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba

Windows security bypass 2 TTPs 7 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe = "0"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe

Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

3580 netsh.exe
Executes dropped EXE 3 IoCs

Processes:

csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exe

pid process

1296 csrss.exe
4720 injector.exe
4428 f801950a962ddba14caaa44bf084b55c.exe

pid	process
3580	netsh.exe

pid	process
1296	csrss.exe
4720	injector.exe
4428	f801950a962ddba14caaa44bf084b55c.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe	upx
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe	upx
behavioral1/memory/4428-153-0x0000000000400000-0x0000000000C25000-memory.dmp	upx
behavioral1/memory/4428-155-0x0000000000400000-0x0000000000C25000-memory.dmp	upx

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe = "0"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1311743041-1167936498-546579926-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1311743041-1167936498-546579926-1000\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:

d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe

description ioc process

File opened (read-only) \??\VBoxMiniRdrDN d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe

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

description	ioc	process
File opened (read-only)	\??\VBoxMiniRdrDN	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe

Drops file in Windows directory 2 IoCs

Processes:

d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe

description	ioc	process
File opened for modification	C:\Windows\rss	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
File created	C:\Windows\rss\csrss.exe	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.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

4072 schtasks.exe
2704 schtasks.exe

pid	process
4072	schtasks.exe
2704	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-732 = "Fiji Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-352 = "FLE Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-441 = "Arabian Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-332 = "E. Europe Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-81 = "Atlantic Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-842 = "Argentina Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-451 = "Caucasus Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-631 = "Tokyo Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2752 = "Tomsk Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1842 = "Russia TZ 4 Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-571 = "China Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2512 = "Lord Howe Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1662 = "Bahia Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.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,-2611 = "Bougainville Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-71 = "Newfoundland Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	csrss.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,-251 = "Dateline Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1831 = "Russia TZ 2 Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-632 = "Tokyo Standard Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1841 = "Russia TZ 4 Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-181 = "Mountain Daylight Time (Mexico)"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.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"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-831 = "SA Eastern Daylight Time"	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	csrss.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exed8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exeinjector.execsrss.exe

pid	process
2312	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
2312	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
1492	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
1492	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
1492	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
1492	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
1492	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
1492	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
1492	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
1492	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
1492	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
1492	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
1296	csrss.exe
1296	csrss.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
1296	csrss.exe
1296	csrss.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe
4720	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	2312	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Token: SeImpersonatePrivilege	2312	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
Token: SeSystemEnvironmentPrivilege	1296	csrss.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.execmd.execsrss.exe

description	pid	process	target process
PID 1492 wrote to memory of 1840	1492	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe	cmd.exe
PID 1492 wrote to memory of 1840	1492	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe	cmd.exe
PID 1840 wrote to memory of 3580	1840	cmd.exe	netsh.exe
PID 1840 wrote to memory of 3580	1840	cmd.exe	netsh.exe
PID 1492 wrote to memory of 1296	1492	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe	csrss.exe
PID 1492 wrote to memory of 1296	1492	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe	csrss.exe
PID 1492 wrote to memory of 1296	1492	d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe	csrss.exe
PID 1296 wrote to memory of 4720	1296	csrss.exe	injector.exe
PID 1296 wrote to memory of 4720	1296	csrss.exe	injector.exe
PID 1296 wrote to memory of 4428	1296	csrss.exe	f801950a962ddba14caaa44bf084b55c.exe
PID 1296 wrote to memory of 4428	1296	csrss.exe	f801950a962ddba14caaa44bf084b55c.exe
PID 1296 wrote to memory of 4428	1296	csrss.exe	f801950a962ddba14caaa44bf084b55c.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\d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
"C:\Users\Admin\AppData\Local\Temp\d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2312

C:\Users\Admin\AppData\Local\Temp\d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.exe
"C:\Users\Admin\AppData\Local\Temp\d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59.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:1492

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:1840

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
PID:3580

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:1296

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:4072

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:1196

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:4720

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:2704

C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
4⤵
- Executes dropped EXE
PID:4428

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\f801950a962ddba14caaa44bf084b55c.exe
Filesize
3.2MB

MD5
f801950a962ddba14caaa44bf084b55c

SHA1
7cadc9076121297428442785536ba0df2d4ae996

SHA256
c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f

SHA512
4183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5

Download Submit
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
Filesize
3.2MB

MD5
f801950a962ddba14caaa44bf084b55c

SHA1
7cadc9076121297428442785536ba0df2d4ae996

SHA256
c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f

SHA512
4183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5

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:\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
57c64afea473e0c649b4254f61ae3fa2

SHA1
4d1199138a03369ca0fdcff2d69a4cacf486b803

SHA256
d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59

SHA512
9b7db6f67f5709310b657c1f75b5442c6a3597b4d681dc8f8bd01180fd19e3c316571411ee734db556c2dfeacdded72890931e67dd7b3a4eeb557d10a4f5cde2

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

MD5
57c64afea473e0c649b4254f61ae3fa2

SHA1
4d1199138a03369ca0fdcff2d69a4cacf486b803

SHA256
d8824532282c54f0d08a6ea8e53963cf9d530759d510b3522646711c91370f59

SHA512
9b7db6f67f5709310b657c1f75b5442c6a3597b4d681dc8f8bd01180fd19e3c316571411ee734db556c2dfeacdded72890931e67dd7b3a4eeb557d10a4f5cde2

Download Submit
memory/1296-141-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1296-144-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1296-137-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1296-138-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1296-139-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1296-140-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1296-154-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1296-142-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1296-143-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1296-147-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1296-145-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1296-146-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1492-129-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1492-125-0x0000000002FB0000-0x0000000003827000-memory.dmp

Filesize
8.5MB

Download
memory/2312-123-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/2312-122-0x0000000003020000-0x0000000003897000-memory.dmp

Filesize
8.5MB

Download
memory/4428-153-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/4428-155-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads