glupteba | a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad

Analysis

max time kernel
150s
max time network
142s
platform
windows10-1703_x64
resource
win10-20220812-en
resource tags

arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
submitted
03-02-2023 00:51

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General

Target

a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Size

4.0MB
MD5

ca49b8da21d25386180738d26a7d12e1
SHA1

af00c5c02a8857442c93d9786c89b0847fc83f62
SHA256

a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad
SHA512

a11bf9a58c45c4f8a52c3c7a3da555a5a0b217e878193c4fbda977515bd007f43b5fde341779189979df8c0696a8d5a83dabc7a32dcea9986b8d5c8d6fa96b84
SSDEEP

98304:5AEP08IlO5HIyHblLw4/BP/sCf9zhVR3d5BVBo9QdBKJUYF86xED:5c8EO5HIy79V/dFWJi

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:

a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe = "0"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe

Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

3724 netsh.exe
Executes dropped EXE 2 IoCs

Processes:

csrss.exeinjector.exe

pid process

3888 csrss.exe
2152 injector.exe

pid	process
3724	netsh.exe

pid	process
3888	csrss.exe
2152	injector.exe

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe = "0"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000\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:

a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe

description	ioc	process
File opened for modification	C:\Windows\rss	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
File created	C:\Windows\rss\csrss.exe	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.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

1704 schtasks.exe
1636 schtasks.exe

pid	process
1704	schtasks.exe
1636	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exenetsh.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1822 = "Russia TZ 1 Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2341 = "Haiti Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-831 = "SA Eastern Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-562 = "SE Asia Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.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,-462 = "Afghanistan Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1971 = "Belarus Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-384 = "Namibia Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.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,-222 = "Alaskan Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-251 = "Dateline Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.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,-681 = "E. Australia Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	csrss.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"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-181 = "Mountain Daylight Time (Mexico)"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-391 = "Arab Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-842 = "Argentina Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.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"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2392 = "Aleutian Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.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"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2161 = "Altai Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2181 = "Astrakhan Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.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"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-242 = "Samoa Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1022 = "Bangladesh Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2792 = "Novosibirsk Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1892 = "Russia TZ 3 Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-332 = "E. Europe Standard Time"	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exea25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exeinjector.execsrss.exe

pid	process
2204	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
2204	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
4860	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
4860	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
4860	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
4860	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
4860	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
4860	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
4860	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
4860	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
4860	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
4860	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
3888	csrss.exe
3888	csrss.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
3888	csrss.exe
3888	csrss.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe
2152	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	2204	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Token: SeImpersonatePrivilege	2204	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
Token: SeSystemEnvironmentPrivilege	3888	csrss.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.execmd.execsrss.exe

description	pid	process	target process
PID 4860 wrote to memory of 4168	4860	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe	cmd.exe
PID 4860 wrote to memory of 4168	4860	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe	cmd.exe
PID 4168 wrote to memory of 3724	4168	cmd.exe	netsh.exe
PID 4168 wrote to memory of 3724	4168	cmd.exe	netsh.exe
PID 4860 wrote to memory of 3888	4860	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe	csrss.exe
PID 4860 wrote to memory of 3888	4860	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe	csrss.exe
PID 4860 wrote to memory of 3888	4860	a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe	csrss.exe
PID 3888 wrote to memory of 2152	3888	csrss.exe	injector.exe
PID 3888 wrote to memory of 2152	3888	csrss.exe	injector.exe

C:\Users\Admin\AppData\Local\Temp\a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
"C:\Users\Admin\AppData\Local\Temp\a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2204

C:\Users\Admin\AppData\Local\Temp\a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.exe
"C:\Users\Admin\AppData\Local\Temp\a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad.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:4860

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:4168

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:3724

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:3888

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:1704

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:1400

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:2152

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:1636

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
4.0MB

MD5
ca49b8da21d25386180738d26a7d12e1

SHA1
af00c5c02a8857442c93d9786c89b0847fc83f62

SHA256
a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad

SHA512
a11bf9a58c45c4f8a52c3c7a3da555a5a0b217e878193c4fbda977515bd007f43b5fde341779189979df8c0696a8d5a83dabc7a32dcea9986b8d5c8d6fa96b84

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

MD5
ca49b8da21d25386180738d26a7d12e1

SHA1
af00c5c02a8857442c93d9786c89b0847fc83f62

SHA256
a25b9b66ef7916b32260ec964ef317f302de24b498290cef3399e1c38da792ad

SHA512
a11bf9a58c45c4f8a52c3c7a3da555a5a0b217e878193c4fbda977515bd007f43b5fde341779189979df8c0696a8d5a83dabc7a32dcea9986b8d5c8d6fa96b84

Download Submit
memory/2152-377-0x0000000000000000-mapping.dmp

Download
memory/2204-159-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-158-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-125-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-126-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-127-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-129-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-128-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-130-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-131-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-132-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-134-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-135-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-137-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-136-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-133-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-138-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-139-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-140-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-141-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-142-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-143-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-145-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-146-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-147-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-148-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-149-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-150-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-151-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-152-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-162-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-154-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-155-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-156-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-157-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-164-0x0000000002FF0000-0x0000000003867000-memory.dmp

Filesize
8.5MB

Download
memory/2204-123-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-160-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-161-0x0000000002BF0000-0x0000000002FE7000-memory.dmp

Filesize
4.0MB

Download
memory/2204-153-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-120-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-124-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-165-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2204-166-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-167-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-168-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-169-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-170-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-171-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-173-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-174-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-175-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-176-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-177-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-172-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-178-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-179-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-180-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-181-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-182-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-183-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-185-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-187-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-186-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-184-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-252-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2204-121-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-163-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/2204-122-0x0000000077540000-0x00000000776CE000-memory.dmp

Filesize
1.6MB

Download
memory/3724-299-0x0000000000000000-mapping.dmp

Download
memory/3888-364-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/3888-362-0x0000000002F00000-0x00000000032EA000-memory.dmp

Filesize
3.9MB

Download
memory/3888-301-0x0000000000000000-mapping.dmp

Download
memory/3888-383-0x0000000002F00000-0x00000000032EA000-memory.dmp

Filesize
3.9MB

Download
memory/3888-384-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4168-298-0x0000000000000000-mapping.dmp

Download
memory/4860-279-0x0000000002970000-0x0000000002D64000-memory.dmp

Filesize
4.0MB

Download
memory/4860-282-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4860-308-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download