glupteba | bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea

Analysis

max time kernel
149s
max time network
150s
platform
windows10-1703_x64
resource
win10-20220812-en
resource tags

arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
submitted
23-09-2022 04:23

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General

Target

bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Size

4.0MB
MD5

b8e9482e7ee4c38d0263071703758ee2
SHA1

8494cde626ffafc8e833a5d7ea6186e5dece8ce0
SHA256

bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea
SHA512

1bd04e3cad04531fc754bfc9eef0bf28fbf0c6fce142c12285d65f59231eeefacd1d561f210dff95d7af8dee4cebba97d4dec4a4a1cefd340ef5184b1b346492
SSDEEP

98304:QzoM0nZ2QILI5S+zyaiPXCAYqj4AJevCj2J8dae6g3:QzovnZ2QIU8+zy5P/cCyeN3

Score

10^/10

glupteba discovery dropper evasion loader persistence trojan

Malware Config

Signatures

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

Windows security bypass 2 TTPs 7 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe = "0"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe

Executes dropped EXE 2 IoCs

Processes:

csrss.exeinjector.exe

pid process

3472 csrss.exe
3284 injector.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4664 netsh.exe

pid	process
3472	csrss.exe
3284	injector.exe

pid	process
4664	netsh.exe

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe = "0"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\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

Drops file in Windows directory 2 IoCs

Processes:

bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe

description	ioc	process
File opened for modification	C:\Windows\rss	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
File created	C:\Windows\rss\csrss.exe	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.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

2680 schtasks.exe
3312 schtasks.exe

pid	process
2680	schtasks.exe
3312	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exenetsh.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1861 = "Russia TZ 6 Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-691 = "Tasmania Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2511 = "Lord Howe Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.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"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1042 = "Ulaanbaatar Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Key created	\REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Control\NetTrace	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-42 = "E. South America Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1502 = "Turkey Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-671 = "AUS Eastern Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2771 = "Omsk Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Key created	\REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Control	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-602 = "Taipei Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.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"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2392 = "Aleutian Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-251 = "Dateline Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2391 = "Aleutian Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-342 = "Egypt Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2341 = "Haiti Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2181 = "Astrakhan Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.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"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-371 = "Jerusalem Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2792 = "Novosibirsk Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-171 = "Central Daylight Time (Mexico)"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-362 = "GTB Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.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"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.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"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-104 = "Central Brazilian Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-105 = "Central Brazilian Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.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"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-332 = "E. Europe Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1661 = "Bahia Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-384 = "Namibia Daylight Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time"	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exebd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exeinjector.execsrss.exe

pid	process
4324	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
4324	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
3148	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
3148	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
3148	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
3148	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
3148	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
3148	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
3148	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
3148	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
3148	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
3148	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3472	csrss.exe
3472	csrss.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3472	csrss.exe
3472	csrss.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe
3284	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	4324	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Token: SeImpersonatePrivilege	4324	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
Token: SeSystemEnvironmentPrivilege	3472	csrss.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.execmd.execsrss.exe

description	pid	process	target process
PID 3148 wrote to memory of 4972	3148	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe	cmd.exe
PID 3148 wrote to memory of 4972	3148	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe	cmd.exe
PID 4972 wrote to memory of 4664	4972	cmd.exe	netsh.exe
PID 4972 wrote to memory of 4664	4972	cmd.exe	netsh.exe
PID 3148 wrote to memory of 3472	3148	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe	csrss.exe
PID 3148 wrote to memory of 3472	3148	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe	csrss.exe
PID 3148 wrote to memory of 3472	3148	bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe	csrss.exe
PID 3472 wrote to memory of 3284	3472	csrss.exe	injector.exe
PID 3472 wrote to memory of 3284	3472	csrss.exe	injector.exe

C:\Users\Admin\AppData\Local\Temp\bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
"C:\Users\Admin\AppData\Local\Temp\bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4324

C:\Users\Admin\AppData\Local\Temp\bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe
"C:\Users\Admin\AppData\Local\Temp\bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea.exe"
2⤵
- Windows security bypass
- Windows security modification
- Adds Run key to start application
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3148

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:4972

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:4664

C:\Windows\rss\csrss.exe
C:\Windows\rss\csrss.exe
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3472

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:2680

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:1568

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:3284

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:3312

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

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
4.0MB

MD5
b8e9482e7ee4c38d0263071703758ee2

SHA1
8494cde626ffafc8e833a5d7ea6186e5dece8ce0

SHA256
bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea

SHA512
1bd04e3cad04531fc754bfc9eef0bf28fbf0c6fce142c12285d65f59231eeefacd1d561f210dff95d7af8dee4cebba97d4dec4a4a1cefd340ef5184b1b346492

Download Submit
C:\Windows\rss\csrss.exe
Filesize
4.0MB

MD5
b8e9482e7ee4c38d0263071703758ee2

SHA1
8494cde626ffafc8e833a5d7ea6186e5dece8ce0

SHA256
bd6a535cf12b9db6a3d83703a3bda820425211b78a6d38905265e0b9b3c99bea

SHA512
1bd04e3cad04531fc754bfc9eef0bf28fbf0c6fce142c12285d65f59231eeefacd1d561f210dff95d7af8dee4cebba97d4dec4a4a1cefd340ef5184b1b346492

Download Submit
memory/3148-294-0x00000000029A0000-0x0000000002D97000-memory.dmp

Filesize
4.0MB

Download
memory/3148-296-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/3148-304-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/3284-377-0x0000000000000000-mapping.dmp

Download
memory/3472-381-0x0000000003200000-0x00000000035EA000-memory.dmp

Filesize
3.9MB

Download
memory/3472-382-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/3472-362-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/3472-359-0x0000000003200000-0x00000000035EA000-memory.dmp

Filesize
3.9MB

Download
memory/3472-299-0x0000000000000000-mapping.dmp

Download
memory/4324-154-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-162-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-128-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-129-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-130-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-131-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-132-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-134-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-135-0x0000000002AA0000-0x0000000002E97000-memory.dmp

Filesize
4.0MB

Download
memory/4324-136-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-137-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-138-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-139-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-140-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-141-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-142-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-143-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-144-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-145-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-146-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-147-0x0000000002EA0000-0x0000000003716000-memory.dmp

Filesize
8.5MB

Download
memory/4324-148-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-149-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-151-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-150-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4324-152-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-153-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-125-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-155-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-156-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-157-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-158-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-159-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-160-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-161-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-127-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-163-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-164-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-165-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-166-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-167-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-168-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-169-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-170-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-171-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-172-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-173-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-174-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-175-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-176-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-177-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-178-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-179-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-180-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-181-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-182-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-183-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-184-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-126-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-123-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-124-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-122-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-121-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-120-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-119-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-118-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-185-0x00000000776D0000-0x000000007785E000-memory.dmp

Filesize
1.6MB

Download
memory/4324-245-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

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memory/4664-297-0x0000000000000000-mapping.dmp

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memory/4972-295-0x0000000000000000-mapping.dmp

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