glupteba | 3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2024, 22:54

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General

Target
3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Size 4.2MB
Sample240419-2v13aahf87
SHA256 3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef
MD5 39247995bc06c1327c3254514c532460
SHA1 183fc0c2e1af69bc35cd244aa188fd507e18e6fd
SHA512 3d80046716695cbfcd5fd5ba1fcde5ee841374f1a376950b8a2646d078ea5fb505edda54b77c062aa2f789033597468d9facfa963ca5ec741f49222a8b994a1b
SSDEEP 98304:3/40EOOAEftLoGWLNDgTXMgGOTrFzBqlMJaGItfGS:PdVQtLoTZDg5GO9Bqlca
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit upx

Malware Config

Signatures

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

Glupteba payload 21 IoCs

resource	yara_rule
behavioral1/memory/3912-2-0x0000000004050000-0x000000000493B000-memory.dmp	family_glupteba
behavioral1/memory/3912-3-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/3912-53-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/3912-55-0x0000000004050000-0x000000000493B000-memory.dmp	family_glupteba
behavioral1/memory/1220-57-0x0000000003F70000-0x000000000485B000-memory.dmp	family_glupteba
behavioral1/memory/1220-58-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/1220-119-0x0000000003B60000-0x0000000003F62000-memory.dmp	family_glupteba
behavioral1/memory/1220-156-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/3944-259-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/3944-268-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/3944-270-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/3944-272-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/3944-274-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/3944-276-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/3944-278-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/3944-280-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/3944-282-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/3944-284-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/3944-286-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/3944-288-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/3944-290-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba

Blocklisted process makes network request 1 IoCs

flow	pid	Process
33	416	powershell.exe

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2104	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
3944	csrss.exe
4368	injector.exe
2644	windefender.exe
3672	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000800000002343f-262.dat	upx
behavioral1/memory/2644-267-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral1/memory/3672-269-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral1/memory/3672-273-0x0000000000400000-0x00000000008DF000-memory.dmp	upx

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-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\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	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
File created	C:\Windows\rss\csrss.exe	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.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
1544	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
1052	schtasks.exe
3924	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2162 = "Altai Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-831 = "SA Eastern Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2512 = "Lord Howe Standard Time"	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time"	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2182 = "Astrakhan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-451 = "Caucasus Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-72 = "Newfoundland Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time"	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time"	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time"	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1912 = "Russia TZ 10 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time"	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time"	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-512 = "Central Asia Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-111 = "Eastern Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-92 = "Pacific SA Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time"	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time"	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time"	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	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\26\52C64B7E\@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-435 = "Georgian Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time"	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-492 = "India Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\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\26\52C64B7E\@tzres.dll,-252 = "Dateline Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-632 = "Tokyo Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	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
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-362 = "GTB Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-371 = "Jerusalem Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-211 = "Pacific Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time"	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-142 = "Canada Central Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time"	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2942 = "Sao Tome Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-381 = "South Africa Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-602 = "Taipei Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time"	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1801 = "Line Islands Daylight Time"	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time"	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.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\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time"	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1880	powershell.exe
1880	powershell.exe
3912	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
3912	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
2988	powershell.exe
2988	powershell.exe
2988	powershell.exe
1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
5092	powershell.exe
5092	powershell.exe
5092	powershell.exe
4508	powershell.exe
4508	powershell.exe
4508	powershell.exe
416	powershell.exe
416	powershell.exe
416	powershell.exe
1400	powershell.exe
1400	powershell.exe
1400	powershell.exe
1512	powershell.exe
1512	powershell.exe
1512	powershell.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe
3944	csrss.exe
3944	csrss.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe
3944	csrss.exe
3944	csrss.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe
3944	csrss.exe
3944	csrss.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe
4368	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	1880	powershell.exe
Token: SeDebugPrivilege	3912	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Token: SeImpersonatePrivilege	3912	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
Token: SeDebugPrivilege	2988	powershell.exe
Token: SeDebugPrivilege	5092	powershell.exe
Token: SeDebugPrivilege	4508	powershell.exe
Token: SeDebugPrivilege	416	powershell.exe
Token: SeDebugPrivilege	1400	powershell.exe
Token: SeDebugPrivilege	1512	powershell.exe
Token: SeSystemEnvironmentPrivilege	3944	csrss.exe
Token: SeSecurityPrivilege	1544	sc.exe
Token: SeSecurityPrivilege	1544	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 3912 wrote to memory of 1880	3912	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe	89
PID 3912 wrote to memory of 1880	3912	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe	89
PID 3912 wrote to memory of 1880	3912	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe	89
PID 1220 wrote to memory of 2988	1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe	97
PID 1220 wrote to memory of 2988	1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe	97
PID 1220 wrote to memory of 2988	1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe	97
PID 1220 wrote to memory of 3724	1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe	100
PID 1220 wrote to memory of 3724	1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe	100
PID 3724 wrote to memory of 2104	3724	cmd.exe	102
PID 3724 wrote to memory of 2104	3724	cmd.exe	102
PID 1220 wrote to memory of 5092	1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe	103
PID 1220 wrote to memory of 5092	1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe	103
PID 1220 wrote to memory of 5092	1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe	103
PID 1220 wrote to memory of 4508	1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe	106
PID 1220 wrote to memory of 4508	1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe	106
PID 1220 wrote to memory of 4508	1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe	106
PID 1220 wrote to memory of 3944	1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe	108
PID 1220 wrote to memory of 3944	1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe	108
PID 1220 wrote to memory of 3944	1220	3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe	108
PID 3944 wrote to memory of 416	3944	csrss.exe	109
PID 3944 wrote to memory of 416	3944	csrss.exe	109
PID 3944 wrote to memory of 416	3944	csrss.exe	109
PID 3944 wrote to memory of 1400	3944	csrss.exe	116
PID 3944 wrote to memory of 1400	3944	csrss.exe	116
PID 3944 wrote to memory of 1400	3944	csrss.exe	116
PID 3944 wrote to memory of 1512	3944	csrss.exe	118
PID 3944 wrote to memory of 1512	3944	csrss.exe	118
PID 3944 wrote to memory of 1512	3944	csrss.exe	118
PID 3944 wrote to memory of 4368	3944	csrss.exe	120
PID 3944 wrote to memory of 4368	3944	csrss.exe	120
PID 2644 wrote to memory of 4864	2644	windefender.exe	127
PID 2644 wrote to memory of 4864	2644	windefender.exe	127
PID 2644 wrote to memory of 4864	2644	windefender.exe	127
PID 4864 wrote to memory of 1544	4864	cmd.exe	128
PID 4864 wrote to memory of 1544	4864	cmd.exe	128
PID 4864 wrote to memory of 1544	4864	cmd.exe	128

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\3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
"C:\Users\Admin\AppData\Local\Temp\3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3912
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1880
- C:\Users\Admin\AppData\Local\Temp\3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe
  "C:\Users\Admin\AppData\Local\Temp\3303a7d33b2d7506236d09589201b6c9d82b8d7b209970df48a88381bdd84fef.exe"
  2⤵
  - 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:1220
- - 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:2988
- - 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:3724
  - - 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
      PID:2104
- - 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:5092
- - 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:4508
- - 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:3944
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Blocklisted process makes network request
      Drops file in System32 directory
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:416
  - - 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:1052
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:4632
  - - 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:1400
  - - 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:1512
  - - 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:4368
  - - 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:3924
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:2644
    - - 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:4864
      - 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:1544

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3672

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

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_hvea5yka.oae.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hvea5yka.oae.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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 6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69
MD5 3d086a433708053f9bf9523e1d87a4e8
SHA1 b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28
SHA512 931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd
MD5 SHA1 SHA512

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