glupteba | 4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1

Analysis

max time kernel
149s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
24/04/2024, 19:53

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General

Target
4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Size 4.2MB
Sample240424-ymc4psgd85
SHA256 4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1
MD5 4308101586c2195b901bf3b6daaee013
SHA1 83cce72e94adaa47047e21949c14032eaeafe3cc
SHA512 2d14795eb0ad36b8fffc8e082707d86fcbc88bc6f226ac34e63a3fd3d4a88c9cf1af77a5854f4a876565e00b662b91c3683cdbc5e631967de3d524d46afd5907
SSDEEP 98304:YEXL5P92Zen5pxefjCuc273pX2Uwa1rTf0MlNHsj4kvnL:ntP92Zen/gjy21wcHZkT
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 17 IoCs

resource	yara_rule
behavioral2/memory/1112-2-0x0000000006670000-0x0000000006F5B000-memory.dmp	family_glupteba
behavioral2/memory/1112-50-0x0000000000400000-0x0000000004418000-memory.dmp	family_glupteba
behavioral2/memory/1112-53-0x0000000006670000-0x0000000006F5B000-memory.dmp	family_glupteba
behavioral2/memory/2784-179-0x0000000000400000-0x0000000004418000-memory.dmp	family_glupteba
behavioral2/memory/2924-242-0x0000000000400000-0x0000000004418000-memory.dmp	family_glupteba
behavioral2/memory/2924-252-0x0000000000400000-0x0000000004418000-memory.dmp	family_glupteba
behavioral2/memory/2924-254-0x0000000000400000-0x0000000004418000-memory.dmp	family_glupteba
behavioral2/memory/2924-258-0x0000000000400000-0x0000000004418000-memory.dmp	family_glupteba
behavioral2/memory/2924-260-0x0000000000400000-0x0000000004418000-memory.dmp	family_glupteba
behavioral2/memory/2924-263-0x0000000000400000-0x0000000004418000-memory.dmp	family_glupteba
behavioral2/memory/2924-266-0x0000000000400000-0x0000000004418000-memory.dmp	family_glupteba
behavioral2/memory/2924-269-0x0000000000400000-0x0000000004418000-memory.dmp	family_glupteba
behavioral2/memory/2924-272-0x0000000000400000-0x0000000004418000-memory.dmp	family_glupteba
behavioral2/memory/2924-275-0x0000000000400000-0x0000000004418000-memory.dmp	family_glupteba
behavioral2/memory/2924-278-0x0000000000400000-0x0000000004418000-memory.dmp	family_glupteba
behavioral2/memory/2924-281-0x0000000000400000-0x0000000004418000-memory.dmp	family_glupteba
behavioral2/memory/2924-285-0x0000000000400000-0x0000000004418000-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
4316	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
2924	csrss.exe
3048	injector.exe
3880	windefender.exe
2264	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002aa0a-246.dat	upx
behavioral2/memory/3880-251-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2264-255-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2264-261-0x0000000000400000-0x00000000008DF000-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-1-5-21-801765966-3955847401-2235691403-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-801765966-3955847401-2235691403-1000\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 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

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	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
File created	C:\Windows\rss\csrss.exe	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
File created	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\windefender.exe	csrss.exe

Launches sc.exe 1 IoCs

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

pid	Process
4316	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
4696	schtasks.exe
3964	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\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\26\52C64B7E\@tzres.dll,-252 = "Dateline Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-891 = "Morocco Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-652 = "AUS Central Standard Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-331 = "E. Europe Daylight Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.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\26\52C64B7E\@tzres.dll,-121 = "SA Pacific Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2631 = "Norfolk Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1891 = "Russia TZ 3 Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2752 = "Tomsk Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.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\26\52C64B7E\@tzres.dll,-141 = "Canada Central Daylight Time"	windefender.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\26\52C64B7E\@tzres.dll,-442 = "Arabian Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-982 = "Kamchatka Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-912 = "Mauritius Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2512 = "Lord Howe Standard Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-214 = "Pacific Daylight Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1892 = "Russia TZ 3 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-3051 = "Qyzylorda Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1722 = "Libya Standard Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.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\26\52C64B7E\@tzres.dll,-2532 = "Chatham Islands Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1911 = "Russia TZ 10 Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-31 = "Mid-Atlantic Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-3141 = "South Sudan Daylight Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-301 = "Romance Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-562 = "SE Asia Standard Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2942 = "Sao Tome Standard Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.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\SmartCardRoot\CTLs	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\TrustedPeople\Certificates	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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-671 = "AUS Eastern Daylight Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	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\26\52C64B7E\@tzres.dll,-142 = "Canada Central Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-281 = "Central Europe Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2142 = "Transbaikal Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time"	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
364	powershell.exe
364	powershell.exe
1112	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
1112	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
1528	powershell.exe
1528	powershell.exe
2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
4084	powershell.exe
4084	powershell.exe
3448	powershell.exe
3448	powershell.exe
3156	powershell.exe
3156	powershell.exe
2408	powershell.exe
2408	powershell.exe
3120	powershell.exe
3120	powershell.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
2924	csrss.exe
2924	csrss.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
2924	csrss.exe
2924	csrss.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
2924	csrss.exe
2924	csrss.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe
3048	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	364	powershell.exe
Token: SeDebugPrivilege	1112	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Token: SeImpersonatePrivilege	1112	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
Token: SeDebugPrivilege	1528	powershell.exe
Token: SeDebugPrivilege	4084	powershell.exe
Token: SeDebugPrivilege	3448	powershell.exe
Token: SeDebugPrivilege	3156	powershell.exe
Token: SeDebugPrivilege	2408	powershell.exe
Token: SeDebugPrivilege	3120	powershell.exe
Token: SeSystemEnvironmentPrivilege	2924	csrss.exe
Token: SeSecurityPrivilege	4316	sc.exe
Token: SeSecurityPrivilege	4316	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1112 wrote to memory of 364	1112	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe	78
PID 1112 wrote to memory of 364	1112	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe	78
PID 1112 wrote to memory of 364	1112	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe	78
PID 2784 wrote to memory of 1528	2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe	83
PID 2784 wrote to memory of 1528	2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe	83
PID 2784 wrote to memory of 1528	2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe	83
PID 2784 wrote to memory of 3452	2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe	85
PID 2784 wrote to memory of 3452	2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe	85
PID 3452 wrote to memory of 4316	3452	cmd.exe	87
PID 3452 wrote to memory of 4316	3452	cmd.exe	87
PID 2784 wrote to memory of 4084	2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe	88
PID 2784 wrote to memory of 4084	2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe	88
PID 2784 wrote to memory of 4084	2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe	88
PID 2784 wrote to memory of 3448	2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe	90
PID 2784 wrote to memory of 3448	2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe	90
PID 2784 wrote to memory of 3448	2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe	90
PID 2784 wrote to memory of 2924	2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe	92
PID 2784 wrote to memory of 2924	2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe	92
PID 2784 wrote to memory of 2924	2784	4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe	92
PID 2924 wrote to memory of 3156	2924	csrss.exe	93
PID 2924 wrote to memory of 3156	2924	csrss.exe	93
PID 2924 wrote to memory of 3156	2924	csrss.exe	93
PID 2924 wrote to memory of 2408	2924	csrss.exe	99
PID 2924 wrote to memory of 2408	2924	csrss.exe	99
PID 2924 wrote to memory of 2408	2924	csrss.exe	99
PID 2924 wrote to memory of 3120	2924	csrss.exe	101
PID 2924 wrote to memory of 3120	2924	csrss.exe	101
PID 2924 wrote to memory of 3120	2924	csrss.exe	101
PID 2924 wrote to memory of 3048	2924	csrss.exe	103
PID 2924 wrote to memory of 3048	2924	csrss.exe	103
PID 3880 wrote to memory of 1016	3880	windefender.exe	109
PID 3880 wrote to memory of 1016	3880	windefender.exe	109
PID 3880 wrote to memory of 1016	3880	windefender.exe	109
PID 1016 wrote to memory of 4316	1016	cmd.exe	110
PID 1016 wrote to memory of 4316	1016	cmd.exe	110
PID 1016 wrote to memory of 4316	1016	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\4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
"C:\Users\Admin\AppData\Local\Temp\4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1112
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:364
- C:\Users\Admin\AppData\Local\Temp\4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.exe
  "C:\Users\Admin\AppData\Local\Temp\4936a99eedce8022426ea66afa89986622314566e6b877b9bf77de27bd4359a1.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:2784
- - 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:1528
- - 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:3452
  - - 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:4316
- - 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:4084
- - 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:3448
- - 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:2924
  - - 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:3156
  - - 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:4696
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:3788
  - - 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:2408
  - - 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:3120
  - - 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:3048
  - - 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:3964
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:3880
    - - 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:1016
      - 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:4316

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2264

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_xad11xbd.53s.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xad11xbd.53s.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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