glupteba | 3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4

Analysis

max time kernel
300s
max time network
302s
platform
windows10-1703_x64
resource
win10-20240221-en
resource tags

arch:x64arch:x86image:win10-20240221-enlocale:en-usos:windows10-1703-x64system
submitted
07/03/2024, 04:51

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General

Target
3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Size 4.1MB
Sample240307-fgsyvsed79
SHA256 3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4
MD5 d17340d0eba6711bd4b7ed23dbf14092
SHA1 c02cdc3dd96b0cbbd8af4de61d3d5bedc179261a
SHA512 55a3ebb5ee05774c2717c4eb5b9eced85836d313809af499eba089a9b321232958ad013be362bfc80c0820d8c79d46e900d3d53e405ee6cf6bbdd7593225065d
SSDEEP 98304:cXiKh1C4B55B6e+JvuzJueJrhbVWTmXefdMdq2:cSeC4X5UJ2zJueNnMqdL
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 37 IoCs

resource	yara_rule
behavioral2/memory/5052-2-0x0000000002F00000-0x00000000037EB000-memory.dmp	family_glupteba
behavioral2/memory/5052-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/5052-27-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/5052-229-0x0000000002F00000-0x00000000037EB000-memory.dmp	family_glupteba
behavioral2/memory/5052-302-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/5084-305-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/5084-538-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/5084-582-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/5084-827-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/5084-1052-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1056-0x0000000003500000-0x0000000003DEB000-memory.dmp	family_glupteba
behavioral2/memory/4472-1057-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1260-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1800-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1809-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1815-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1817-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1819-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1821-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1823-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1825-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1827-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1829-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1831-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1833-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1835-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1837-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1839-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1841-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1843-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1845-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1847-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1849-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1851-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1853-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1855-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4472-1857-0x0000000000400000-0x0000000000D1C000-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\Processes\csrss.exe = "0"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe = "0"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4920	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
4472	csrss.exe
5044	injector.exe
3148	windefender.exe
3660	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000700000001abf7-1808.dat	upx
behavioral2/memory/3148-1814-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/3660-1816-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/3660-1820-0x0000000000400000-0x00000000008DF000-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\rss = "0"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe = "0"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.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-1-5-21-1531961169-1615826105-2188682873-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1531961169-1615826105-2188682873-1000\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 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
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	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\rss	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
File created	C:\Windows\rss\csrss.exe	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
File created	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
5032	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
4148	schtasks.exe
5080	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,-351 = "FLE Daylight Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-271 = "Greenwich Daylight Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Key created	\REGISTRY\USER\.DEFAULT\System\CurrentControlSet	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-282 = "Central Europe Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-1821 = "Russia TZ 1 Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-2412 = "Marquesas Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.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,-501 = "Nepal Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-362 = "GTB Standard Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-1021 = "Bangladesh Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-892 = "Morocco Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.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\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-562 = "SE Asia Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-1471 = "Magadan Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-1891 = "Russia TZ 3 Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2391 = "Aleutian Daylight Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-41 = "E. South America Daylight Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-691 = "Tasmania Daylight Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-82 = "Atlantic Standard Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-262 = "GMT Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-981 = "Kamchatka Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-911 = "Mauritius Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@tzres.dll,-691 = "Tasmania Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time"	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2088	powershell.exe
2088	powershell.exe
2088	powershell.exe
5052	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
5052	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
1696	powershell.exe
1696	powershell.exe
1696	powershell.exe
5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
3084	powershell.exe
3084	powershell.exe
3084	powershell.exe
3228	powershell.exe
3228	powershell.exe
3228	powershell.exe
600	powershell.exe
600	powershell.exe
600	powershell.exe
2416	powershell.exe
2416	powershell.exe
2416	powershell.exe
3428	powershell.exe
3428	powershell.exe
3428	powershell.exe
5044	injector.exe
5044	injector.exe
5044	injector.exe
5044	injector.exe
5044	injector.exe
5044	injector.exe
4472	csrss.exe
4472	csrss.exe
5044	injector.exe
5044	injector.exe
5044	injector.exe
5044	injector.exe
5044	injector.exe
5044	injector.exe
4472	csrss.exe
4472	csrss.exe
5044	injector.exe
5044	injector.exe
4472	csrss.exe
4472	csrss.exe
5044	injector.exe
5044	injector.exe
5044	injector.exe
5044	injector.exe
5044	injector.exe
5044	injector.exe
5044	injector.exe
5044	injector.exe
5044	injector.exe
5044	injector.exe
5044	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2088	powershell.exe
Token: SeDebugPrivilege	5052	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Token: SeImpersonatePrivilege	5052	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
Token: SeDebugPrivilege	1696	powershell.exe
Token: SeDebugPrivilege	3084	powershell.exe
Token: SeDebugPrivilege	3228	powershell.exe
Token: SeDebugPrivilege	600	powershell.exe
Token: SeDebugPrivilege	2416	powershell.exe
Token: SeDebugPrivilege	3428	powershell.exe
Token: SeSystemEnvironmentPrivilege	4472	csrss.exe
Token: SeSecurityPrivilege	5032	sc.exe
Token: SeSecurityPrivilege	5032	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 5052 wrote to memory of 2088	5052	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe	73
PID 5052 wrote to memory of 2088	5052	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe	73
PID 5052 wrote to memory of 2088	5052	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe	73
PID 5084 wrote to memory of 1696	5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe	78
PID 5084 wrote to memory of 1696	5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe	78
PID 5084 wrote to memory of 1696	5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe	78
PID 5084 wrote to memory of 2156	5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe	80
PID 5084 wrote to memory of 2156	5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe	80
PID 2156 wrote to memory of 4920	2156	cmd.exe	82
PID 2156 wrote to memory of 4920	2156	cmd.exe	82
PID 5084 wrote to memory of 3084	5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe	83
PID 5084 wrote to memory of 3084	5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe	83
PID 5084 wrote to memory of 3084	5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe	83
PID 5084 wrote to memory of 3228	5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe	85
PID 5084 wrote to memory of 3228	5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe	85
PID 5084 wrote to memory of 3228	5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe	85
PID 5084 wrote to memory of 4472	5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe	87
PID 5084 wrote to memory of 4472	5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe	87
PID 5084 wrote to memory of 4472	5084	3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe	87
PID 4472 wrote to memory of 600	4472	csrss.exe	88
PID 4472 wrote to memory of 600	4472	csrss.exe	88
PID 4472 wrote to memory of 600	4472	csrss.exe	88
PID 4472 wrote to memory of 2416	4472	csrss.exe	95
PID 4472 wrote to memory of 2416	4472	csrss.exe	95
PID 4472 wrote to memory of 2416	4472	csrss.exe	95
PID 4472 wrote to memory of 3428	4472	csrss.exe	97
PID 4472 wrote to memory of 3428	4472	csrss.exe	97
PID 4472 wrote to memory of 3428	4472	csrss.exe	97
PID 4472 wrote to memory of 5044	4472	csrss.exe	99
PID 4472 wrote to memory of 5044	4472	csrss.exe	99
PID 3148 wrote to memory of 5040	3148	windefender.exe	106
PID 3148 wrote to memory of 5040	3148	windefender.exe	106
PID 3148 wrote to memory of 5040	3148	windefender.exe	106
PID 5040 wrote to memory of 5032	5040	cmd.exe	107
PID 5040 wrote to memory of 5032	5040	cmd.exe	107
PID 5040 wrote to memory of 5032	5040	cmd.exe	107

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\3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
"C:\Users\Admin\AppData\Local\Temp\3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5052
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2088
- C:\Users\Admin\AppData\Local\Temp\3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.exe
  "C:\Users\Admin\AppData\Local\Temp\3a1bbf20b9491ae073f3fa1599b688c4087dbf0a640e9d07a47e545dc7d9c7e4.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:5084
- - 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:1696
- - 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:2156
  - - 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:4920
- - 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:3084
- - 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:3228
- - 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:4472
  - - 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:600
  - - 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:4148
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:2268
  - - 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:2416
  - - 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:3428
  - - 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:5044
  - - 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:5080
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:3148
    - - 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:5040
      - 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:5032

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3660

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_rraj4zet.d1k.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rraj4zet.d1k.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 413da361d77055dae7007f82b58b366c8783aa72e0b8fbe41519b940c253b38d
MD5 db01a2c1c7e70b2b038edf8ad5ad9826
SHA1 540217c647a73bad8d8a79e3a0f3998b5abd199b
SHA512 c76ff57fcee5cdf9fdf3116d4e1dc0cf106867bf19ab474b763e242acf5dca9a7509cb837c35e130c3e056636b4e8a4e135512a978bcd3dd641e20f5bf76c3d6
MD5 SHA1 SHA512

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