glupteba | 4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872

Analysis

max time kernel
149s
max time network
122s
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, 10:25

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General

Target
4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Size 4.2MB
Sample240426-mfxc8aed7t
SHA256 4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872
MD5 f28b3bac68363490b3d66765adecfa53
SHA1 bc6063277470ebaf7b3ecb7337c73d89856071b3
SHA512 7f13dc3ff6092d09361344db8167378b0f42bb1589ed636334ab4c67557e1f743576c6546bb575836d1a4c6cc6161e642357e10f2e62ff42981aed5177172b2f
SSDEEP 98304:U6zvtQMeZsUGIR23f1Eux2obklXG3eVEjYIcqQcAIgt+uXW47hQYXqeTW:Uj8IR23fmux21lXG3eYYIcTKsXWmQYXQ
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 17 IoCs

resource	yara_rule
behavioral2/memory/2924-2-0x0000000006520000-0x0000000006E0B000-memory.dmp	family_glupteba
behavioral2/memory/2924-3-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/2924-71-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/1616-119-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/2924-134-0x0000000006520000-0x0000000006E0B000-memory.dmp	family_glupteba
behavioral2/memory/5096-147-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/5096-193-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/5096-202-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/5096-204-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/5096-205-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/5096-207-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/5096-210-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/5096-212-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/5096-213-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/5096-215-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/5096-218-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/5096-220-0x0000000000400000-0x000000000441F000-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
2000	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
5096	csrss.exe
1584	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-1-5-21-734199974-1358367239-436541239-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-734199974-1358367239-436541239-1000\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	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
File created	C:\Windows\rss\csrss.exe	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.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
2928	schtasks.exe
1408	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.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"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.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
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	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,-105 = "Central Brazilian Standard Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-42 = "E. South America Standard Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-181 = "Mountain Daylight Time (Mexico)"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-81 = "Atlantic Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1822 = "Russia TZ 1 Standard Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	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\SmartCardRoot	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1832 = "Russia TZ 2 Standard Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1841 = "Russia TZ 4 Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1931 = "Russia TZ 11 Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-752 = "Tonga Standard Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-451 = "Caucasus Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.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,-571 = "China Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1862 = "Russia TZ 6 Standard Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2572 = "Turks and Caicos Standard Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-291 = "Central European Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time"	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3304	powershell.exe
3304	powershell.exe
2924	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
2924	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
4768	powershell.exe
4768	powershell.exe
1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
4372	powershell.exe
4372	powershell.exe
3320	powershell.exe
3320	powershell.exe
1500	powershell.exe
1500	powershell.exe
4520	powershell.exe
4520	powershell.exe
3580	powershell.exe
3580	powershell.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
5096	csrss.exe
5096	csrss.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
5096	csrss.exe
5096	csrss.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe
1584	injector.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	3304	powershell.exe
Token: SeDebugPrivilege	2924	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Token: SeImpersonatePrivilege	2924	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
Token: SeDebugPrivilege	4768	powershell.exe
Token: SeDebugPrivilege	4372	powershell.exe
Token: SeDebugPrivilege	3320	powershell.exe
Token: SeDebugPrivilege	1500	powershell.exe
Token: SeDebugPrivilege	4520	powershell.exe
Token: SeDebugPrivilege	3580	powershell.exe
Token: SeSystemEnvironmentPrivilege	5096	csrss.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2924 wrote to memory of 3304	2924	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe	81
PID 2924 wrote to memory of 3304	2924	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe	81
PID 2924 wrote to memory of 3304	2924	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe	81
PID 1616 wrote to memory of 4768	1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe	87
PID 1616 wrote to memory of 4768	1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe	87
PID 1616 wrote to memory of 4768	1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe	87
PID 1616 wrote to memory of 2864	1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe	89
PID 1616 wrote to memory of 2864	1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe	89
PID 2864 wrote to memory of 2000	2864	cmd.exe	91
PID 2864 wrote to memory of 2000	2864	cmd.exe	91
PID 1616 wrote to memory of 4372	1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe	92
PID 1616 wrote to memory of 4372	1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe	92
PID 1616 wrote to memory of 4372	1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe	92
PID 1616 wrote to memory of 3320	1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe	94
PID 1616 wrote to memory of 3320	1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe	94
PID 1616 wrote to memory of 3320	1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe	94
PID 1616 wrote to memory of 5096	1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe	96
PID 1616 wrote to memory of 5096	1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe	96
PID 1616 wrote to memory of 5096	1616	4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe	96
PID 5096 wrote to memory of 1500	5096	csrss.exe	97
PID 5096 wrote to memory of 1500	5096	csrss.exe	97
PID 5096 wrote to memory of 1500	5096	csrss.exe	97
PID 5096 wrote to memory of 4520	5096	csrss.exe	102
PID 5096 wrote to memory of 4520	5096	csrss.exe	102
PID 5096 wrote to memory of 4520	5096	csrss.exe	102
PID 5096 wrote to memory of 3580	5096	csrss.exe	105
PID 5096 wrote to memory of 3580	5096	csrss.exe	105
PID 5096 wrote to memory of 3580	5096	csrss.exe	105
PID 5096 wrote to memory of 1584	5096	csrss.exe	107
PID 5096 wrote to memory of 1584	5096	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\4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
"C:\Users\Admin\AppData\Local\Temp\4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2924
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3304
- C:\Users\Admin\AppData\Local\Temp\4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.exe
  "C:\Users\Admin\AppData\Local\Temp\4af37060922a9f1efe26363662d33d3ce137264ac5832ccb0e1e5fe590126872.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:1616
- - 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:4768
- - 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:2864
  - - 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:2000
- - 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:4372
- - 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:3320
- - 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:5096
  - - 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:1500
  - - 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:2928
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:720
  - - 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:4520
  - - 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:3580
  - - 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:1584
  - - 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:1408

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_l0xeterl.qdh.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_l0xeterl.qdh.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 e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9
MD5 ac4917a885cf6050b1a483e4bc4d2ea5
SHA1 b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f
SHA512 092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d
MD5 SHA1 SHA512

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