glupteba | a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee

Analysis

max time kernel
150s
max time network
155s
platform
windows11-21h2_x64
resource
win11-20240319-en
resource tags

arch:x64arch:x86image:win11-20240319-enlocale:en-usos:windows11-21h2-x64system
submitted
27/03/2024, 16:48

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General

Target
a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Size 4.1MB
Sample240327-va3xtagc96
SHA256 a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee
MD5 b0e6833b5b1a140bd74b8de788f8b631
SHA1 17d5330eb426fe9fb9bdeccd1d7bd5208acdb773
SHA512 4158bd48eca3d4e16896b3f5302321da0ab73db4ad4e23e93c0e0702e61edcc2fa361f68e49b09b32b8820d62024326b8993191908c2c5029b1e4bb07774bdba
SSDEEP 98304:A2w6smPz2ESXip8Qe6pOnhP/maq5821Ptw/6vAnaohZ6W:b5qE/8QbGhHmhZ6DtZ3
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 22 IoCs

resource	yara_rule
behavioral2/memory/872-2-0x00000000030D0000-0x00000000039BB000-memory.dmp	family_glupteba
behavioral2/memory/872-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/872-45-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/872-53-0x00000000030D0000-0x00000000039BB000-memory.dmp	family_glupteba
behavioral2/memory/908-55-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/872-56-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/908-88-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/908-99-0x0000000002A80000-0x0000000002E7E000-memory.dmp	family_glupteba
behavioral2/memory/908-112-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/908-145-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4436-148-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4436-204-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4436-240-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4436-250-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4436-252-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4436-256-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4436-258-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4436-261-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4436-264-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4436-267-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4436-270-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4436-274-0x0000000000400000-0x0000000000D1C000-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
3740	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
4436	csrss.exe
648	injector.exe
1232	windefender.exe
1768	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002a797-244.dat	upx
behavioral2/memory/1232-249-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/1768-253-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/1768-259-0x0000000000400000-0x00000000008DF000-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-1-5-21-1233663403-1277323514-675434005-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1233663403-1277323514-675434005-1000\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 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

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	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\rss\csrss.exe	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
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	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe

Launches sc.exe 1 IoCs

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

pid	Process
248	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
2732	schtasks.exe
5056	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-1471 = "Magadan Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-931 = "Coordinated Universal Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-672 = "AUS Eastern Standard Time"	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-105 = "Central Brazilian Standard Time"	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time"	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1892 = "Russia TZ 3 Standard Time"	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.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\22\52C64B7E\@tzres.dll,-142 = "Canada Central Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-561 = "SE Asia Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time"	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time"	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-435 = "Georgian Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-1801 = "Line Islands Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-562 = "SE Asia Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	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\22\52C64B7E\@tzres.dll,-402 = "Arabic Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-42 = "E. South America Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-112 = "Eastern Standard Time"	windefender.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\22\52C64B7E\@tzres.dll,-271 = "Greenwich Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-791 = "SA Western Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\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\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2941 = "Sao Tome Daylight Time"	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	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\22\52C64B7E\@tzres.dll,-1662 = "Bahia Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-512 = "Central Asia Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time"	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-81 = "Atlantic Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-282 = "Central Europe Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time"	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time"	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time"	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time"	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	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\22\52C64B7E\@tzres.dll,-2611 = "Bougainville Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time"	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time"	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time"	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-105 = "Central Brazilian Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-892 = "Morocco Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-182 = "Mountain Standard Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-1412 = "Syria Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1912 = "Russia TZ 10 Standard Time"	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.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\22\52C64B7E\@tzres.dll,-2512 = "Lord Howe Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-72 = "Newfoundland Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-3052 = "Qyzylorda Standard Time"	windefender.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3816	powershell.exe
3816	powershell.exe
872	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
872	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
2896	powershell.exe
2896	powershell.exe
908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
3880	powershell.exe
3880	powershell.exe
1524	powershell.exe
1524	powershell.exe
3604	powershell.exe
3604	powershell.exe
4672	powershell.exe
4672	powershell.exe
1656	powershell.exe
1656	powershell.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
4436	csrss.exe
4436	csrss.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
4436	csrss.exe
4436	csrss.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
4436	csrss.exe
4436	csrss.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe
648	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	3816	powershell.exe
Token: SeDebugPrivilege	872	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Token: SeImpersonatePrivilege	872	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
Token: SeDebugPrivilege	2896	powershell.exe
Token: SeDebugPrivilege	3880	powershell.exe
Token: SeDebugPrivilege	1524	powershell.exe
Token: SeDebugPrivilege	3604	powershell.exe
Token: SeDebugPrivilege	4672	powershell.exe
Token: SeDebugPrivilege	1656	powershell.exe
Token: SeSystemEnvironmentPrivilege	4436	csrss.exe
Token: SeSecurityPrivilege	248	sc.exe
Token: SeSecurityPrivilege	248	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 872 wrote to memory of 3816	872	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe	78
PID 872 wrote to memory of 3816	872	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe	78
PID 872 wrote to memory of 3816	872	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe	78
PID 908 wrote to memory of 2896	908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe	83
PID 908 wrote to memory of 2896	908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe	83
PID 908 wrote to memory of 2896	908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe	83
PID 908 wrote to memory of 1268	908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe	85
PID 908 wrote to memory of 1268	908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe	85
PID 1268 wrote to memory of 3740	1268	cmd.exe	87
PID 1268 wrote to memory of 3740	1268	cmd.exe	87
PID 908 wrote to memory of 3880	908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe	88
PID 908 wrote to memory of 3880	908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe	88
PID 908 wrote to memory of 3880	908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe	88
PID 908 wrote to memory of 1524	908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe	90
PID 908 wrote to memory of 1524	908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe	90
PID 908 wrote to memory of 1524	908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe	90
PID 908 wrote to memory of 4436	908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe	92
PID 908 wrote to memory of 4436	908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe	92
PID 908 wrote to memory of 4436	908	a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe	92
PID 4436 wrote to memory of 3604	4436	csrss.exe	93
PID 4436 wrote to memory of 3604	4436	csrss.exe	93
PID 4436 wrote to memory of 3604	4436	csrss.exe	93
PID 4436 wrote to memory of 4672	4436	csrss.exe	99
PID 4436 wrote to memory of 4672	4436	csrss.exe	99
PID 4436 wrote to memory of 4672	4436	csrss.exe	99
PID 4436 wrote to memory of 1656	4436	csrss.exe	101
PID 4436 wrote to memory of 1656	4436	csrss.exe	101
PID 4436 wrote to memory of 1656	4436	csrss.exe	101
PID 4436 wrote to memory of 648	4436	csrss.exe	103
PID 4436 wrote to memory of 648	4436	csrss.exe	103
PID 1232 wrote to memory of 384	1232	windefender.exe	109
PID 1232 wrote to memory of 384	1232	windefender.exe	109
PID 1232 wrote to memory of 384	1232	windefender.exe	109
PID 384 wrote to memory of 248	384	cmd.exe	110
PID 384 wrote to memory of 248	384	cmd.exe	110
PID 384 wrote to memory of 248	384	cmd.exe	110

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\a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
"C:\Users\Admin\AppData\Local\Temp\a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:872
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3816
- C:\Users\Admin\AppData\Local\Temp\a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.exe
  "C:\Users\Admin\AppData\Local\Temp\a6d6db330de2463e562342bcc2527e50cc8425adb7bdc1e9a6df70bc17fc0aee.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:908
- - 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:2896
- - 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:1268
  - - 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:3740
- - 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:3880
- - 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:1524
- - 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:4436
  - - 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:3604
  - - 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:2732
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:1192
  - - 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:4672
  - - 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:1656
  - - 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:648
  - - 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:5056
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:1232
    - - 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:384
      - 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:248

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1768

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_havkzp2k.l5o.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_havkzp2k.l5o.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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