glupteba | 7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e

Analysis

max time kernel
151s
max time network
148s
platform
windows10-1703_x64
resource
win10-20220812-en
resource tags

arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
submitted
29-01-2023 12:30

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General

Target

7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Size

4.1MB
MD5

fb06d4a26de8fd44405693220f53cb2f
SHA1

4334600bb085457c52eb1e431e8cedc32c4a57d2
SHA256

7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e
SHA512

f526d73f84bf179cca581b5cba1cd8cdd28d7ddbda1b1d450519445a466514f779e87b5b1f1c519cb50c71d987f8c390c5a3500baeabdc92ed19c71408304e39
SSDEEP

98304:WZWqEuz9lwfPwwwhFXBUzcboLtY5KGBLd7CfaXbD:eWQhlw3whFazcboe5Kkd7Cf8H

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:

7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe = "0"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe

Executes dropped EXE 2 IoCs

Processes:

csrss.exeinjector.exe

pid process

4996 csrss.exe
4696 injector.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

5088 netsh.exe

pid	process
4996	csrss.exe
4696	injector.exe

pid	process
5088	netsh.exe

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe = "0"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.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\""	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.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
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Drops file in Windows directory 2 IoCs

Processes:

7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe

description	ioc	process
File opened for modification	C:\Windows\rss	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
File created	C:\Windows\rss\csrss.exe	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.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

1408 schtasks.exe
2812 schtasks.exe

pid	process
1408	schtasks.exe
2812	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.execsrss.exenetsh.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2161 = "Altai Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-571 = "China Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	csrss.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-332 = "E. Europe Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1721 = "Libya Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-632 = "Tokyo Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.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,-671 = "AUS Eastern Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-122 = "SA Pacific Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-391 = "Arab Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.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"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-291 = "Central European Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-81 = "Atlantic Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2531 = "Chatham Islands Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2772 = "Omsk Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-842 = "Argentina Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-601 = "Taipei Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-202 = "US Mountain Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-82 = "Atlantic Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-105 = "Central Brazilian Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2432 = "Cuba Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-271 = "Greenwich Daylight Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Key created	\REGISTRY\USER\.DEFAULT\System\CurrentControlSet	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1932 = "Russia TZ 11 Standard Time"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.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"	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exeinjector.execsrss.exe

pid	process
3528	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
3528	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
4848	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
4848	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
4848	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
4848	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
4848	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
4848	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
4848	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
4848	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
4848	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
4848	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4996	csrss.exe
4996	csrss.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4996	csrss.exe
4996	csrss.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe
4696	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	3528	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Token: SeImpersonatePrivilege	3528	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
Token: SeSystemEnvironmentPrivilege	4996	csrss.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.execmd.execsrss.exe

description	pid	process	target process
PID 4848 wrote to memory of 3036	4848	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe	cmd.exe
PID 4848 wrote to memory of 3036	4848	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe	cmd.exe
PID 3036 wrote to memory of 5088	3036	cmd.exe	netsh.exe
PID 3036 wrote to memory of 5088	3036	cmd.exe	netsh.exe
PID 4848 wrote to memory of 4996	4848	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe	csrss.exe
PID 4848 wrote to memory of 4996	4848	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe	csrss.exe
PID 4848 wrote to memory of 4996	4848	7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe	csrss.exe
PID 4996 wrote to memory of 4696	4996	csrss.exe	injector.exe
PID 4996 wrote to memory of 4696	4996	csrss.exe	injector.exe

C:\Users\Admin\AppData\Local\Temp\7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
"C:\Users\Admin\AppData\Local\Temp\7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3528

C:\Users\Admin\AppData\Local\Temp\7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.exe
"C:\Users\Admin\AppData\Local\Temp\7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e.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:4848

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:3036

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:5088

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:4996

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:1408

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:1356

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:4696

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:2812

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
fb06d4a26de8fd44405693220f53cb2f

SHA1
4334600bb085457c52eb1e431e8cedc32c4a57d2

SHA256
7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e

SHA512
f526d73f84bf179cca581b5cba1cd8cdd28d7ddbda1b1d450519445a466514f779e87b5b1f1c519cb50c71d987f8c390c5a3500baeabdc92ed19c71408304e39

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

MD5
fb06d4a26de8fd44405693220f53cb2f

SHA1
4334600bb085457c52eb1e431e8cedc32c4a57d2

SHA256
7fda6fba8fd18654494dca914832632537cf867e9682d4cf5d67d9d6f162476e

SHA512
f526d73f84bf179cca581b5cba1cd8cdd28d7ddbda1b1d450519445a466514f779e87b5b1f1c519cb50c71d987f8c390c5a3500baeabdc92ed19c71408304e39

Download Submit
memory/3036-297-0x0000000000000000-mapping.dmp

Download
memory/3528-158-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-154-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-122-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-123-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-124-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-125-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-126-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-127-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-128-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-129-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-130-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-159-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-132-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-134-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-135-0x0000000002AF0000-0x0000000002EDF000-memory.dmp

Filesize
3.9MB

Download
memory/3528-136-0x0000000002EE0000-0x0000000003757000-memory.dmp

Filesize
8.5MB

Download
memory/3528-137-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-138-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-139-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-140-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-142-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-141-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-143-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-144-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-145-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/3528-146-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-147-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-148-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-149-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-150-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-151-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-152-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-153-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-161-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-155-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-156-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-157-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-120-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-131-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-118-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-121-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-162-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-163-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-164-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-165-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-166-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-167-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-168-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-169-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-170-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-171-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-172-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-173-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-174-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-175-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-176-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-177-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-178-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-179-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-180-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-181-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-182-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-183-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-184-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-185-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-242-0x0000000002EE0000-0x0000000003757000-memory.dmp

Filesize
8.5MB

Download
memory/3528-245-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/3528-160-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/3528-119-0x0000000077550000-0x00000000776DE000-memory.dmp

Filesize
1.6MB

Download
memory/4696-376-0x0000000000000000-mapping.dmp

Download
memory/4848-296-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4848-304-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4848-295-0x0000000002910000-0x0000000002CFC000-memory.dmp

Filesize
3.9MB

Download
memory/4996-300-0x0000000000000000-mapping.dmp

Download
memory/4996-362-0x0000000002E00000-0x00000000031EA000-memory.dmp

Filesize
3.9MB

Download
memory/4996-363-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4996-382-0x0000000002E00000-0x00000000031EA000-memory.dmp

Filesize
3.9MB

Download
memory/4996-383-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/5088-298-0x0000000000000000-mapping.dmp

Download