glupteba | 41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea

Analysis

max time kernel
150s
max time network
114s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
26/04/2024, 10:27

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General

Target
41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Size 4.2MB
Sample240426-mg7wcaee2s
SHA256 41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea
MD5 bebb49791d46ea1df13b2614fa535ede
SHA1 b4a40b04ddf189e7db9a6367488e3bf49c979532
SHA512 c96c6195df9298ebf607212cb4189dedc1b6940679511a4bef9d5fdb5015133ee7e335248e93862301293909b8cf103d67583d43d3fcc8aa31fe7b673d3f9c1b
SSDEEP 98304:U6zvtQMeZsUGIR23f1Eux2obklXG3eVEjYIcqQcAIgt+uXW47hQYXqeTa:Uj8IR23fmux21lXG3eYYIcTKsXWmQYXU
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit

Malware Config

Signatures

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

Glupteba payload 19 IoCs

resource	yara_rule
behavioral2/memory/3456-2-0x0000000006520000-0x0000000006E0B000-memory.dmp	family_glupteba
behavioral2/memory/3456-3-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/3456-71-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/2452-122-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/3456-145-0x0000000006520000-0x0000000006E0B000-memory.dmp	family_glupteba
behavioral2/memory/2452-146-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/3460-147-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/3460-196-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/3460-204-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/3460-207-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/3460-210-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/3460-213-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/3460-216-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/3460-219-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/3460-222-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/3460-225-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/3460-228-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/3460-231-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/3460-234-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2964	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
3460	csrss.exe
392	injector.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-1-5-21-891789021-684472942-1795878712-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-891789021-684472942-1795878712-1000\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 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
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

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	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
File created	C:\Windows\rss\csrss.exe	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.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
2408	schtasks.exe
3416	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-562 = "SE Asia Standard Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1872 = "Russia TZ 7 Standard Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-442 = "Arabian Standard Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3141 = "South Sudan Daylight Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-271 = "Greenwich Daylight Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-171 = "Central Daylight Time (Mexico)"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-831 = "SA Eastern Daylight Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-162 = "Central Standard Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.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\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time"	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2920	powershell.exe
2920	powershell.exe
3456	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
3456	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
3420	powershell.exe
3420	powershell.exe
2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
2416	powershell.exe
2416	powershell.exe
3496	powershell.exe
3496	powershell.exe
3352	powershell.exe
3352	powershell.exe
2384	powershell.exe
2384	powershell.exe
2756	powershell.exe
2756	powershell.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
3460	csrss.exe
3460	csrss.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
3460	csrss.exe
3460	csrss.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe
392	injector.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	2920	powershell.exe
Token: SeDebugPrivilege	3456	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Token: SeImpersonatePrivilege	3456	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
Token: SeDebugPrivilege	3420	powershell.exe
Token: SeDebugPrivilege	2416	powershell.exe
Token: SeDebugPrivilege	3496	powershell.exe
Token: SeDebugPrivilege	3352	powershell.exe
Token: SeDebugPrivilege	2384	powershell.exe
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeSystemEnvironmentPrivilege	3460	csrss.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3456 wrote to memory of 2920	3456	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe	82
PID 3456 wrote to memory of 2920	3456	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe	82
PID 3456 wrote to memory of 2920	3456	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe	82
PID 2452 wrote to memory of 3420	2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe	87
PID 2452 wrote to memory of 3420	2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe	87
PID 2452 wrote to memory of 3420	2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe	87
PID 2452 wrote to memory of 5080	2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe	89
PID 2452 wrote to memory of 5080	2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe	89
PID 5080 wrote to memory of 2964	5080	cmd.exe	91
PID 5080 wrote to memory of 2964	5080	cmd.exe	91
PID 2452 wrote to memory of 2416	2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe	92
PID 2452 wrote to memory of 2416	2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe	92
PID 2452 wrote to memory of 2416	2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe	92
PID 2452 wrote to memory of 3496	2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe	94
PID 2452 wrote to memory of 3496	2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe	94
PID 2452 wrote to memory of 3496	2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe	94
PID 2452 wrote to memory of 3460	2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe	96
PID 2452 wrote to memory of 3460	2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe	96
PID 2452 wrote to memory of 3460	2452	41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe	96
PID 3460 wrote to memory of 3352	3460	csrss.exe	97
PID 3460 wrote to memory of 3352	3460	csrss.exe	97
PID 3460 wrote to memory of 3352	3460	csrss.exe	97
PID 3460 wrote to memory of 2384	3460	csrss.exe	103
PID 3460 wrote to memory of 2384	3460	csrss.exe	103
PID 3460 wrote to memory of 2384	3460	csrss.exe	103
PID 3460 wrote to memory of 2756	3460	csrss.exe	105
PID 3460 wrote to memory of 2756	3460	csrss.exe	105
PID 3460 wrote to memory of 2756	3460	csrss.exe	105
PID 3460 wrote to memory of 392	3460	csrss.exe	107
PID 3460 wrote to memory of 392	3460	csrss.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\41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
"C:\Users\Admin\AppData\Local\Temp\41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3456
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2920
- C:\Users\Admin\AppData\Local\Temp\41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.exe
  "C:\Users\Admin\AppData\Local\Temp\41c704494f9638a1d731fc46fe5b32fe4a60da9cb52e8e307aaaf2ee5d21a4ea.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:2452
- - 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:3420
- - 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:5080
  - - 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:2964
- - 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:2416
- - 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:3496
- - C:\Windows\rss\csrss.exe
    C:\Windows\rss\csrss.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Manipulates WinMonFS driver.
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3460
  - - 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:3352
  - - 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:2408
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:1564
  - - 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:2384
  - - 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:2756
  - - 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:392
  - - 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:3416

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_etqpzwlf.qbf.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_etqpzwlf.qbf.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 9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
MD5 d0c46cad6c0778401e21910bd6b56b70
SHA1 7be418951ea96326aca445b8dfe449b2bfa0dca6
SHA512 057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949
MD5 SHA1 SHA512

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