glupteba | 21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c

Analysis

max time kernel
150s
max time network
135s
platform
windows10-1703_x64
resource
win10-20220901-en
resource tags

arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
submitted
06-02-2023 20:21

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General

Target

21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Size

4.1MB
MD5

bac1740b0f0edd7549a191a8b2431d65
SHA1

9815b2bd8cda950eaba3bd4bdf2799469024fb71
SHA256

21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c
SHA512

6a5e1dfbdaddc40cd4a1f34b396a9d89ee40633090ffe42b5d6fbd36bb308ecb859fa345f59c837ef462aeada210b60cca50ef11d942fa9770a3a170fdb61fff
SSDEEP

98304:ZV+nVpLjrIM0MIU/VaZwWIJpHM/mXD3zuf5GwYlhjh:HUVlIM0TxOrHtTMYlh9

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:

21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe = "0"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe

Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4684 netsh.exe
Executes dropped EXE 2 IoCs

Processes:

csrss.exeinjector.exe

pid process

4704 csrss.exe
912 injector.exe

pid	process
4684	netsh.exe

pid	process
4704	csrss.exe
912	injector.exe

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe = "0"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

csrss.exe21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	csrss.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.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

Drops file in Windows directory 2 IoCs

Processes:

21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe

description	ioc	process
File opened for modification	C:\Windows\rss	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
File created	C:\Windows\rss\csrss.exe	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.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

2392 schtasks.exe
2668 schtasks.exe

pid	process
2392	schtasks.exe
2668	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.execsrss.exenetsh.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.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,-672 = "AUS Eastern Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-342 = "Egypt Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2791 = "Novosibirsk Daylight Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-742 = "New Zealand Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1662 = "Bahia Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2491 = "Aus Central W. Daylight Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-562 = "SE Asia Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-251 = "Dateline Daylight Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.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"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Key created	\REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Control\NetTrace\Session	netsh.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-732 = "Fiji Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1502 = "Turkey Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-331 = "E. Europe Daylight Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-112 = "Eastern Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-449 = "Azerbaijan Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-752 = "Tonga Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.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,-42 = "E. South America Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2531 = "Chatham Islands Daylight Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.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"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.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,-2182 = "Astrakhan Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1802 = "Line Islands Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-932 = "Coordinated Universal Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1861 = "Russia TZ 6 Daylight Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-982 = "Kamchatka Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2142 = "Transbaikal Standard Time"	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exeinjector.execsrss.exe

pid	process
4468	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
4468	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
4520	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
4520	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
4520	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
4520	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
4520	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
4520	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
4520	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
4520	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
4520	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
4520	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
4704	csrss.exe
4704	csrss.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
4704	csrss.exe
4704	csrss.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe
912	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	4468	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Token: SeImpersonatePrivilege	4468	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
Token: SeSystemEnvironmentPrivilege	4704	csrss.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.execmd.execsrss.exe

description	pid	process	target process
PID 4520 wrote to memory of 4040	4520	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe	cmd.exe
PID 4520 wrote to memory of 4040	4520	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe	cmd.exe
PID 4040 wrote to memory of 4684	4040	cmd.exe	netsh.exe
PID 4040 wrote to memory of 4684	4040	cmd.exe	netsh.exe
PID 4520 wrote to memory of 4704	4520	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe	csrss.exe
PID 4520 wrote to memory of 4704	4520	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe	csrss.exe
PID 4520 wrote to memory of 4704	4520	21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe	csrss.exe
PID 4704 wrote to memory of 912	4704	csrss.exe	injector.exe
PID 4704 wrote to memory of 912	4704	csrss.exe	injector.exe

C:\Users\Admin\AppData\Local\Temp\21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
"C:\Users\Admin\AppData\Local\Temp\21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4468

C:\Users\Admin\AppData\Local\Temp\21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.exe
"C:\Users\Admin\AppData\Local\Temp\21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c.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:4520

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:4040

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:4684

C:\Windows\rss\csrss.exe
C:\Windows\rss\csrss.exe
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4704

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:2392

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:2516

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:912

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:2668

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

Web Service

T1102

Impact

Replay Monitor

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Downloads

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

MD5
d98e33b66343e7c96158444127a117f6

SHA1
bb716c5509a2bf345c6c1152f6e3e1452d39d50d

SHA256
5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

SHA512
705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

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

MD5
d98e33b66343e7c96158444127a117f6

SHA1
bb716c5509a2bf345c6c1152f6e3e1452d39d50d

SHA256
5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

SHA512
705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

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

MD5
bac1740b0f0edd7549a191a8b2431d65

SHA1
9815b2bd8cda950eaba3bd4bdf2799469024fb71

SHA256
21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c

SHA512
6a5e1dfbdaddc40cd4a1f34b396a9d89ee40633090ffe42b5d6fbd36bb308ecb859fa345f59c837ef462aeada210b60cca50ef11d942fa9770a3a170fdb61fff

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

MD5
bac1740b0f0edd7549a191a8b2431d65

SHA1
9815b2bd8cda950eaba3bd4bdf2799469024fb71

SHA256
21d09ee23886e0bba75ce085f96cd58ed48a2c0a46ce199e2967a70d932b721c

SHA512
6a5e1dfbdaddc40cd4a1f34b396a9d89ee40633090ffe42b5d6fbd36bb308ecb859fa345f59c837ef462aeada210b60cca50ef11d942fa9770a3a170fdb61fff

Download Submit
memory/912-377-0x0000000000000000-mapping.dmp

Download
memory/4040-298-0x0000000000000000-mapping.dmp

Download
memory/4468-157-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-246-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4468-124-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-125-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-126-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-128-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-127-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-129-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-130-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-131-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-132-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-133-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-134-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-135-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-136-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-137-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-138-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-139-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-140-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-141-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-142-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-143-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-145-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-146-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-147-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-163-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-150-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-151-0x0000000002EE0000-0x0000000003757000-memory.dmp

Filesize
8.5MB

Download
memory/4468-152-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-148-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-154-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4468-153-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-155-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-156-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-122-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-158-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-159-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-160-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-120-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-123-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-149-0x0000000002AE0000-0x0000000002ED1000-memory.dmp

Filesize
3.9MB

Download
memory/4468-164-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-165-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-166-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-167-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-168-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-170-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-171-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-169-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-172-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-173-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-175-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-176-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-177-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-174-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-178-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-179-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-180-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-181-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-182-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-183-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-184-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-185-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-187-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-186-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-162-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-161-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4468-121-0x0000000077BB0000-0x0000000077D3E000-memory.dmp

Filesize
1.6MB

Download
memory/4520-306-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4520-277-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4520-271-0x0000000002AF0000-0x0000000002EE2000-memory.dmp

Filesize
3.9MB

Download
memory/4684-299-0x0000000000000000-mapping.dmp

Download
memory/4704-301-0x0000000000000000-mapping.dmp

Download
memory/4704-340-0x0000000003000000-0x00000000033EA000-memory.dmp

Filesize
3.9MB

Download
memory/4704-344-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4704-383-0x0000000003000000-0x00000000033EA000-memory.dmp

Filesize
3.9MB

Download
memory/4704-384-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download