glupteba | 6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6

General

Target

6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Size

4.1MB
MD5

efb29dec18e208c1bc2a97d0ab1b8c9b
SHA1

d45cf3ab36cb56383287b3f1de5d80464cbbfdec
SHA256

6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6
SHA512

01227649cde0501e88eca71156f18d44c02918365476127a2b6bd752d596b2ea303c344a7922e5d0c2aef9756be0297fe8823f82663aebfae7a612aacae8b0a9
SSDEEP

98304:qkqCk810HajeBhok089IZwzx3irAwQJoxf5Z:uw1neBhrj9I2GQJG

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/3076-121-0x0000000002D40000-0x00000000035B7000-memory.dmp	family_glupteba
behavioral1/memory/3076-122-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4700-128-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2372-135-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2372-136-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2372-137-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2372-138-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2372-139-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2372-140-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2372-141-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2372-142-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2372-143-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2372-144-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2372-145-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2372-146-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2372-147-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2372-148-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba

Windows security bypass 2 TTPs 7 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe = "0"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe

Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

2096 netsh.exe
Executes dropped EXE 2 IoCs

Processes:

csrss.exeinjector.exe

pid process

2372 csrss.exe
4740 injector.exe

pid	process
2096	netsh.exe

pid	process
2372	csrss.exe
4740	injector.exe

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe = "0"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.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\""	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.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
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:

6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe

description ioc process

File opened (read-only) \??\VBoxMiniRdrDN 6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe

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

description	ioc	process
File opened (read-only)	\??\VBoxMiniRdrDN	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe

Drops file in Windows directory 2 IoCs

Processes:

6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe

description	ioc	process
File created	C:\Windows\rss\csrss.exe	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
File opened for modification	C:\Windows\rss	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.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
3120 schtasks.exe

pid	process
1992	schtasks.exe
3120	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exenetsh.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2842 = "Saratov Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2142 = "Transbaikal Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1721 = "Libya Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1821 = "Russia TZ 1 Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2791 = "Novosibirsk Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2772 = "Omsk Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1971 = "Belarus Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-892 = "Morocco Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2792 = "Novosibirsk Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2181 = "Astrakhan Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2371 = "Easter Island Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-342 = "Egypt Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-41 = "E. South America Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1892 = "Russia TZ 3 Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.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"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2391 = "Aleutian Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.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"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-982 = "Kamchatka Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.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"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.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"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.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"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.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"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-931 = "Coordinated Universal Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-291 = "Central European Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-182 = "Mountain Standard Time (Mexico)"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1662 = "Bahia Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-562 = "SE Asia Standard Time"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Key created	\REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Control\NetTrace\Session	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"	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exeinjector.execsrss.exe

pid	process
3076	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
3076	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
4700	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
4700	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
4700	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
4700	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
4700	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
4700	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
4700	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
4700	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
4700	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
4700	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.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
2372	csrss.exe
2372	csrss.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
4740	injector.exe
2372	csrss.exe
2372	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:

6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	3076	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Token: SeImpersonatePrivilege	3076	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
Token: SeSystemEnvironmentPrivilege	2372	csrss.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.execmd.execsrss.exe

description	pid	process	target process
PID 4700 wrote to memory of 8	4700	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe	cmd.exe
PID 4700 wrote to memory of 8	4700	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe	cmd.exe
PID 8 wrote to memory of 2096	8	cmd.exe	netsh.exe
PID 8 wrote to memory of 2096	8	cmd.exe	netsh.exe
PID 4700 wrote to memory of 2372	4700	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe	csrss.exe
PID 4700 wrote to memory of 2372	4700	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe	csrss.exe
PID 4700 wrote to memory of 2372	4700	6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe	csrss.exe
PID 2372 wrote to memory of 4740	2372	csrss.exe	injector.exe
PID 2372 wrote to memory of 4740	2372	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\6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
"C:\Users\Admin\AppData\Local\Temp\6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3076

C:\Users\Admin\AppData\Local\Temp\6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.exe
"C:\Users\Admin\AppData\Local\Temp\6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6.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:8

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:2096

C:\Windows\rss\csrss.exe
C:\Windows\rss\csrss.exe
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2372

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:2732

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:3120

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

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
efb29dec18e208c1bc2a97d0ab1b8c9b

SHA1
d45cf3ab36cb56383287b3f1de5d80464cbbfdec

SHA256
6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6

SHA512
01227649cde0501e88eca71156f18d44c02918365476127a2b6bd752d596b2ea303c344a7922e5d0c2aef9756be0297fe8823f82663aebfae7a612aacae8b0a9

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

MD5
efb29dec18e208c1bc2a97d0ab1b8c9b

SHA1
d45cf3ab36cb56383287b3f1de5d80464cbbfdec

SHA256
6b3c6ae2bc0fe80656f8d36afbb04bf8b84e425542218b486a5241f4202ea7d6

SHA512
01227649cde0501e88eca71156f18d44c02918365476127a2b6bd752d596b2ea303c344a7922e5d0c2aef9756be0297fe8823f82663aebfae7a612aacae8b0a9

Download Submit
memory/2372-138-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2372-141-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2372-148-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2372-135-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2372-136-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2372-137-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2372-147-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2372-139-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2372-140-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2372-146-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2372-142-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2372-143-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2372-144-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2372-145-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/3076-121-0x0000000002D40000-0x00000000035B7000-memory.dmp

Filesize
8.5MB

Download
memory/3076-122-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4700-128-0x0000000000400000-0x0000000000C91000-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