glupteba | ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7

Analysis

max time kernel
299s
max time network
300s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
25/04/2024, 22:28

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General

Target
ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Size 4.1MB
Sample240425-2dr32sga45
SHA256 ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7
MD5 b4c933d39d547be6d05de14f75987d0e
SHA1 270444dc7aff359a0bde504cdf7b9ca3bfb2b8c9
SHA512 d76dc9477202a97a4214e54eef6cea0f31557aa9bd6bb5df271fec3823f3cc2b533119e3bd1c5c19f8f77cbaebf28b9bf857e03feefda1ee534df31c7b8a450e
SSDEEP 98304:9oa4fp94xsJrGehkJ1DdBF0TJiDxdyor/vCKqVsx:9fupiUGtp01Obgy
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit trojan upx

Malware Config

Signatures

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

Glupteba payload 32 IoCs

resource	yara_rule
behavioral2/memory/3748-2-0x0000000006430000-0x0000000006D1B000-memory.dmp	family_glupteba
behavioral2/memory/3748-298-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/3748-301-0x0000000006430000-0x0000000006D1B000-memory.dmp	family_glupteba
behavioral2/memory/516-1042-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1784-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1793-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1799-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1801-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1803-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1805-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1807-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1809-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1811-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1813-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1815-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1817-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1819-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1821-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1823-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1825-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1827-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1829-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1831-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1833-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1835-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1837-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1839-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1841-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1843-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1845-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1847-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba
behavioral2/memory/4412-1849-0x0000000000400000-0x0000000004415000-memory.dmp	family_glupteba

Windows security bypass 2 TTPs 7 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe = "0"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1560	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
4412	csrss.exe
1392	injector.exe
4384	windefender.exe
4708	windefender.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000800000001ac18-1792.dat	upx
behavioral2/memory/4384-1798-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4708-1800-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4708-1804-0x0000000000400000-0x00000000008DF000-memory.dmp	upx

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe = "0"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3699363923-1875576828-3287151903-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3699363923-1875576828-3287151903-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	csrss.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Manipulates WinMonFS driver. 1 IoCs

Roottkits write to WinMonFS to hide directories/files from being detected.

rootkit evasion

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

Drops file in System32 directory 7 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe

Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\VBoxMiniRdrDN	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
File created	C:\Windows\rss\csrss.exe	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
File created	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\windefender.exe	csrss.exe

Launches sc.exe 1 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
3924	sc.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/Job

T1053

pid	Process
3076	schtasks.exe
2944	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Key created	\REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Control\NetTrace\Session	netsh.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-251 = "Dateline Daylight Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1841 = "Russia TZ 4 Daylight Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-2371 = "Easter Island Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2512 = "Lord Howe Standard Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-342 = "Egypt Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-672 = "AUS Eastern Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-2772 = "Omsk Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-352 = "FLE Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-742 = "New Zealand Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-832 = "SA Eastern Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-591 = "Malay Peninsula Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-2432 = "Cuba Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-232 = "Hawaiian Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-1912 = "Russia TZ 10 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-791 = "SA Western Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-492 = "India Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-121 = "SA Pacific Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-81 = "Atlantic Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-592 = "Malay Peninsula Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-982 = "Kamchatka Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-1471 = "Magadan Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-531 = "Sri Lanka Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time"	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4828	powershell.exe
4828	powershell.exe
4828	powershell.exe
3748	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
3748	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
4752	powershell.exe
4752	powershell.exe
4752	powershell.exe
516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
5016	powershell.exe
5016	powershell.exe
5016	powershell.exe
4988	powershell.exe
4988	powershell.exe
4988	powershell.exe
4720	powershell.exe
4720	powershell.exe
4720	powershell.exe
2284	powershell.exe
2284	powershell.exe
2284	powershell.exe
664	powershell.exe
664	powershell.exe
664	powershell.exe
1392	injector.exe
1392	injector.exe
1392	injector.exe
1392	injector.exe
1392	injector.exe
1392	injector.exe
4412	csrss.exe
4412	csrss.exe
1392	injector.exe
1392	injector.exe
1392	injector.exe
1392	injector.exe
1392	injector.exe
1392	injector.exe
4412	csrss.exe
4412	csrss.exe
1392	injector.exe
1392	injector.exe
1392	injector.exe
1392	injector.exe
4412	csrss.exe
4412	csrss.exe
1392	injector.exe
1392	injector.exe
1392	injector.exe
1392	injector.exe
1392	injector.exe
1392	injector.exe
1392	injector.exe
1392	injector.exe
1392	injector.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

description	pid	Process
Token: SeDebugPrivilege	4828	powershell.exe
Token: SeDebugPrivilege	3748	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Token: SeImpersonatePrivilege	3748	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
Token: SeDebugPrivilege	4752	powershell.exe
Token: SeDebugPrivilege	5016	powershell.exe
Token: SeDebugPrivilege	4988	powershell.exe
Token: SeDebugPrivilege	4720	powershell.exe
Token: SeDebugPrivilege	2284	powershell.exe
Token: SeDebugPrivilege	664	powershell.exe
Token: SeSystemEnvironmentPrivilege	4412	csrss.exe
Token: SeSecurityPrivilege	3924	sc.exe
Token: SeSecurityPrivilege	3924	sc.exe
Token: SeDebugPrivilege	4840	powershell.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 3748 wrote to memory of 4828	3748	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe	76
PID 3748 wrote to memory of 4828	3748	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe	76
PID 3748 wrote to memory of 4828	3748	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe	76
PID 516 wrote to memory of 4752	516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe	81
PID 516 wrote to memory of 4752	516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe	81
PID 516 wrote to memory of 4752	516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe	81
PID 516 wrote to memory of 4216	516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe	83
PID 516 wrote to memory of 4216	516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe	83
PID 4216 wrote to memory of 1560	4216	cmd.exe	85
PID 4216 wrote to memory of 1560	4216	cmd.exe	85
PID 516 wrote to memory of 5016	516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe	86
PID 516 wrote to memory of 5016	516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe	86
PID 516 wrote to memory of 5016	516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe	86
PID 516 wrote to memory of 4988	516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe	88
PID 516 wrote to memory of 4988	516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe	88
PID 516 wrote to memory of 4988	516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe	88
PID 516 wrote to memory of 4412	516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe	90
PID 516 wrote to memory of 4412	516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe	90
PID 516 wrote to memory of 4412	516	ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe	90
PID 4412 wrote to memory of 4720	4412	csrss.exe	91
PID 4412 wrote to memory of 4720	4412	csrss.exe	91
PID 4412 wrote to memory of 4720	4412	csrss.exe	91
PID 4412 wrote to memory of 2284	4412	csrss.exe	98
PID 4412 wrote to memory of 2284	4412	csrss.exe	98
PID 4412 wrote to memory of 2284	4412	csrss.exe	98
PID 4412 wrote to memory of 664	4412	csrss.exe	100
PID 4412 wrote to memory of 664	4412	csrss.exe	100
PID 4412 wrote to memory of 664	4412	csrss.exe	100
PID 4412 wrote to memory of 1392	4412	csrss.exe	102
PID 4412 wrote to memory of 1392	4412	csrss.exe	102
PID 4384 wrote to memory of 4816	4384	windefender.exe	109
PID 4384 wrote to memory of 4816	4384	windefender.exe	109
PID 4384 wrote to memory of 4816	4384	windefender.exe	109
PID 4816 wrote to memory of 3924	4816	cmd.exe	110
PID 4816 wrote to memory of 3924	4816	cmd.exe	110
PID 4816 wrote to memory of 3924	4816	cmd.exe	110
PID 4412 wrote to memory of 4840	4412	csrss.exe	113
PID 4412 wrote to memory of 4840	4412	csrss.exe	113
PID 4412 wrote to memory of 4840	4412	csrss.exe	113

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
"C:\Users\Admin\AppData\Local\Temp\ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3748
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4828
- C:\Users\Admin\AppData\Local\Temp\ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe
  "C:\Users\Admin\AppData\Local\Temp\ea22d21bbb3421876fe5fdda36dfb37333950c1bd61401bd9e80ca9aa189cdf7.exe"
  2⤵
  - Windows security bypass
  - Windows security modification
  - Adds Run key to start application
  - Checks for VirtualBox DLLs, possible anti-VM trick
  - Drops file in Windows directory
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:516
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4752
- - 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:4216
  - - 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:1560
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5016
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4988
- - C:\Windows\rss\csrss.exe
    C:\Windows\rss\csrss.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Manipulates WinMonFS driver.
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4412
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4720
  - - 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:3076
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:2028
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2284
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:664
  - - 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:1392
  - - 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:2944
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:4384
    - - C:\Windows\SysWOW64\cmd.exe
        
        cmd.exe /C sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4816
      - C:\Windows\SysWOW64\sc.exe
        
        sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
        6⤵
        Launches sc.exe
        Suspicious use of AdjustPrivilegeToken
        
        PID:3924
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Modifies data under HKEY_USERS
      Suspicious use of AdjustPrivilegeToken
      PID:4840

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4708

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

__PSScriptPolicyTest_fzpmsk1a.4ep.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fzpmsk1a.4ep.ps1
Size 1B
SHA256 6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b
MD5 c4ca4238a0b923820dcc509a6f75849b
SHA1 356a192b7913b04c54574d18c28d46e6395428ab
SHA512 4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a
MD5 SHA1 SHA512

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injector.exe

Path C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
Size 281KB
SHA256 5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
MD5 d98e33b66343e7c96158444127a117f6
SHA1 bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA512 705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
SSDEEP 3072:qbHszDaOJ8u2HHFIWr6e29kOnK7qFQ8wMii5I7kGvNjzMuszHshoY46bEydJ+dK9:SA3IlIA6e29vngqS8wMmuooh8z+8F
MD5 SHA1 SHA512 SSDEEP

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powershell.exe.log

Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Size 2KB
SHA256 1bcd97396c83babfe6c5068ba590d7a3f8b70e72955a9d1e4070648e404cbf05
MD5 1c19c16e21c97ed42d5beabc93391fc5
SHA1 8ad83f8e0b3acf8dfbbf87931e41f0d664c4df68
SHA512 7d18776d8f649b3d29c182ff03efc6cea8b527542ee55304980f24577aae8b64e37044407776e220984346c3998ace5f8853afa58c8b38407482a728e9495e0c
MD5 SHA1 SHA512

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