glupteba | 521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d

Analysis

max time kernel
150s
max time network
153s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
17/05/2024, 19:16

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General

Target
521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Size 4.1MB
Sample240517-xytedsec81
SHA256 521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d
MD5 4e689fdae180cd303f99c2f3bcf6b005
SHA1 ec9da5fd18cee72a680b584d9ca0d685679083ae
SHA512 c0494c714923957748db71f4ebfdc63798dafdf32be37d924388c2aa7d6859ee5c627b6eaaa1a4ff715f88575999ea781f61e1db6534b66c8340e5d1264d4f68
SSDEEP 98304:iZ3eWnmCP3Day+MGMrrH7Rp/OOmeNALbhxcJ3GFuqO9B+e2R0FJ4:oufQJ+wrvRp/OL3LVxY3GFuq2BkwJ4
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion execution loader persistence rootkit upx

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/5076-2-0x0000000004C20000-0x000000000550B000-memory.dmp	family_glupteba
behavioral2/memory/5076-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/5076-53-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/5076-54-0x0000000004C20000-0x000000000550B000-memory.dmp	family_glupteba
behavioral2/memory/5076-52-0x0000000000400000-0x0000000002B0D000-memory.dmp	family_glupteba
behavioral2/memory/1560-124-0x0000000000400000-0x0000000002B0D000-memory.dmp	family_glupteba
behavioral2/memory/1716-202-0x0000000000400000-0x0000000002B0D000-memory.dmp	family_glupteba
behavioral2/memory/1716-212-0x0000000000400000-0x0000000002B0D000-memory.dmp	family_glupteba
behavioral2/memory/1716-214-0x0000000000400000-0x0000000002B0D000-memory.dmp	family_glupteba
behavioral2/memory/1716-216-0x0000000000400000-0x0000000002B0D000-memory.dmp	family_glupteba
behavioral2/memory/1716-218-0x0000000000400000-0x0000000002B0D000-memory.dmp	family_glupteba
behavioral2/memory/1716-220-0x0000000000400000-0x0000000002B0D000-memory.dmp	family_glupteba
behavioral2/memory/1716-222-0x0000000000400000-0x0000000002B0D000-memory.dmp	family_glupteba
behavioral2/memory/1716-224-0x0000000000400000-0x0000000002B0D000-memory.dmp	family_glupteba
behavioral2/memory/1716-226-0x0000000000400000-0x0000000002B0D000-memory.dmp	family_glupteba
behavioral2/memory/1716-228-0x0000000000400000-0x0000000002B0D000-memory.dmp	family_glupteba
behavioral2/memory/1716-230-0x0000000000400000-0x0000000002B0D000-memory.dmp	family_glupteba
behavioral2/memory/1716-232-0x0000000000400000-0x0000000002B0D000-memory.dmp	family_glupteba
behavioral2/memory/1716-234-0x0000000000400000-0x0000000002B0D000-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
3988	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
1716	csrss.exe
2396	injector.exe
3148	windefender.exe
2836	windefender.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002aa07-205.dat	upx
behavioral2/memory/3148-206-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2836-209-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/3148-211-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2836-213-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2836-217-0x0000000000400000-0x00000000008DF000-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-1-5-21-1672260578-815027929-964132517-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1672260578-815027929-964132517-1000\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 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

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	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\rss	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
File created	C:\Windows\rss\csrss.exe	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe

Launches sc.exe 1 IoCs

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

pid	Process
952	sc.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3576	powershell.exe
4888	powershell.exe
4808	powershell.exe
3700	powershell.exe
3308	powershell.exe
500	powershell.exe
492	powershell.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2268	5076	WerFault.exe	78

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
440	schtasks.exe
3576	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\@tzres.dll,-41 = "E. South America Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time"	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	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\@tzres.dll,-81 = "Atlantic Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time"	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	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\2a\52C64B7E\@tzres.dll,-2431 = "Cuba Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-981 = "Kamchatka Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	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\2a\52C64B7E\@tzres.dll,-1842 = "Russia TZ 4 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1841 = "Russia TZ 4 Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-911 = "Mauritius Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time"	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1662 = "Bahia Standard Time"	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2891 = "Sudan Daylight Time"	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.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\@tzres.dll,-1661 = "Bahia Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-571 = "China Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1471 = "Magadan Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time"	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time"	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1861 = "Russia TZ 6 Daylight Time"	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2892 = "Sudan Standard Time"	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-351 = "FLE Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1862 = "Russia TZ 6 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-832 = "SA Eastern Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time"	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2872 = "Magallanes Standard Time"	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-562 = "SE Asia Standard Time"	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-932 = "Coordinated Universal Time"	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-402 = "Arabic Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-32 = "Mid-Atlantic Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-892 = "Morocco Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2392 = "Aleutian Standard Time"	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time"	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2141 = "Transbaikal Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time"	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	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\@tzres.dll,-162 = "Central Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2532 = "Chatham Islands Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-272 = "Greenwich Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2061 = "North Korea Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time"	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.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

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
492	powershell.exe
492	powershell.exe
5076	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
5076	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
3576	powershell.exe
3576	powershell.exe
1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
4888	powershell.exe
4888	powershell.exe
4808	powershell.exe
4808	powershell.exe
3700	powershell.exe
3700	powershell.exe
3308	powershell.exe
3308	powershell.exe
500	powershell.exe
500	powershell.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
1716	csrss.exe
1716	csrss.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
1716	csrss.exe
1716	csrss.exe
2396	injector.exe
2396	injector.exe
1716	csrss.exe
1716	csrss.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe
2396	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	492	powershell.exe
Token: SeDebugPrivilege	5076	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Token: SeImpersonatePrivilege	5076	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
Token: SeDebugPrivilege	3576	powershell.exe
Token: SeDebugPrivilege	4888	powershell.exe
Token: SeDebugPrivilege	4808	powershell.exe
Token: SeDebugPrivilege	3700	powershell.exe
Token: SeDebugPrivilege	3308	powershell.exe
Token: SeDebugPrivilege	500	powershell.exe
Token: SeSystemEnvironmentPrivilege	1716	csrss.exe
Token: SeSecurityPrivilege	952	sc.exe
Token: SeSecurityPrivilege	952	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 5076 wrote to memory of 492	5076	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe	81
PID 5076 wrote to memory of 492	5076	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe	81
PID 5076 wrote to memory of 492	5076	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe	81
PID 1560 wrote to memory of 3576	1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe	90
PID 1560 wrote to memory of 3576	1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe	90
PID 1560 wrote to memory of 3576	1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe	90
PID 1560 wrote to memory of 3356	1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe	92
PID 1560 wrote to memory of 3356	1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe	92
PID 3356 wrote to memory of 3988	3356	cmd.exe	94
PID 3356 wrote to memory of 3988	3356	cmd.exe	94
PID 1560 wrote to memory of 4888	1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe	95
PID 1560 wrote to memory of 4888	1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe	95
PID 1560 wrote to memory of 4888	1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe	95
PID 1560 wrote to memory of 4808	1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe	97
PID 1560 wrote to memory of 4808	1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe	97
PID 1560 wrote to memory of 4808	1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe	97
PID 1560 wrote to memory of 1716	1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe	99
PID 1560 wrote to memory of 1716	1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe	99
PID 1560 wrote to memory of 1716	1560	521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe	99
PID 1716 wrote to memory of 3700	1716	csrss.exe	100
PID 1716 wrote to memory of 3700	1716	csrss.exe	100
PID 1716 wrote to memory of 3700	1716	csrss.exe	100
PID 1716 wrote to memory of 3308	1716	csrss.exe	106
PID 1716 wrote to memory of 3308	1716	csrss.exe	106
PID 1716 wrote to memory of 3308	1716	csrss.exe	106
PID 1716 wrote to memory of 500	1716	csrss.exe	108
PID 1716 wrote to memory of 500	1716	csrss.exe	108
PID 1716 wrote to memory of 500	1716	csrss.exe	108
PID 1716 wrote to memory of 2396	1716	csrss.exe	110
PID 1716 wrote to memory of 2396	1716	csrss.exe	110
PID 3148 wrote to memory of 576	3148	windefender.exe	116
PID 3148 wrote to memory of 576	3148	windefender.exe	116
PID 3148 wrote to memory of 576	3148	windefender.exe	116
PID 576 wrote to memory of 952	576	cmd.exe	117
PID 576 wrote to memory of 952	576	cmd.exe	117
PID 576 wrote to memory of 952	576	cmd.exe	117

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\521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
"C:\Users\Admin\AppData\Local\Temp\521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5076
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:492
- C:\Users\Admin\AppData\Local\Temp\521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.exe
  "C:\Users\Admin\AppData\Local\Temp\521fd61ce2a49737ec6e7d7e3dfaa9641e9272a601a7d7cb785991d8d74fa28d.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:1560
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Command and Scripting Interpreter: PowerShell
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3576
- - 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:3356
  - - 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:3988
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Command and Scripting Interpreter: PowerShell
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4888
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Command and Scripting Interpreter: PowerShell
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4808
- - 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:1716
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Command and Scripting Interpreter: PowerShell
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3700
  - - 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:440
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:3428
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Command and Scripting Interpreter: PowerShell
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3308
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Command and Scripting Interpreter: PowerShell
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:500
  - - 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:2396
  - - 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:3576
  - - 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:576
      - 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:952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 776
  2⤵
  - Program crash
  PID:2268

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 5076 -ip 5076
1⤵
PID:4024

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2836

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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_qjwbh2jk.t1x.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qjwbh2jk.t1x.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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