glupteba | 7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3

Analysis

max time kernel
150s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
17/04/2024, 10:45

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General

Target
7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Size 4.2MB
Sample240417-mtwnvaea4v
SHA256 7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3
MD5 afc99db2389f4806c43c33cfdaee5a12
SHA1 c2135f33b3816b72a519f104066f2d8b5b0497a8
SHA512 2e0ea18a52e6af1ffd474a24feb9ba3ed037a002c48788d71ebee44ce4ad39bed950e308dc4fa420ff36d43548b42900f4a0f48a33bee2ee0e8e14b0e45b32b6
SSDEEP 98304:UsHXB6xXDv/tbMH9m0TlqzjODh7DaeFjcgHsXp7oBSiH1DSpFQ:nIVRLYr17GeFAgMZ7KSiHtSk
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 21 IoCs

resource	yara_rule
behavioral2/memory/704-2-0x00000000053A0000-0x0000000005C8B000-memory.dmp	family_glupteba
behavioral2/memory/704-3-0x0000000000400000-0x0000000003118000-memory.dmp	family_glupteba
behavioral2/memory/704-51-0x0000000000400000-0x0000000003118000-memory.dmp	family_glupteba
behavioral2/memory/704-52-0x00000000053A0000-0x0000000005C8B000-memory.dmp	family_glupteba
behavioral2/memory/4932-54-0x0000000004E20000-0x0000000005228000-memory.dmp	family_glupteba
behavioral2/memory/4932-55-0x0000000000400000-0x0000000003118000-memory.dmp	family_glupteba
behavioral2/memory/4932-114-0x0000000000400000-0x0000000003118000-memory.dmp	family_glupteba
behavioral2/memory/4932-145-0x0000000000400000-0x0000000003118000-memory.dmp	family_glupteba
behavioral2/memory/4736-240-0x0000000000400000-0x0000000003118000-memory.dmp	family_glupteba
behavioral2/memory/4736-246-0x0000000000400000-0x0000000003118000-memory.dmp	family_glupteba
behavioral2/memory/4736-254-0x0000000000400000-0x0000000003118000-memory.dmp	family_glupteba
behavioral2/memory/4736-256-0x0000000000400000-0x0000000003118000-memory.dmp	family_glupteba
behavioral2/memory/4736-258-0x0000000000400000-0x0000000003118000-memory.dmp	family_glupteba
behavioral2/memory/4736-260-0x0000000000400000-0x0000000003118000-memory.dmp	family_glupteba
behavioral2/memory/4736-262-0x0000000000400000-0x0000000003118000-memory.dmp	family_glupteba
behavioral2/memory/4736-264-0x0000000000400000-0x0000000003118000-memory.dmp	family_glupteba
behavioral2/memory/4736-266-0x0000000000400000-0x0000000003118000-memory.dmp	family_glupteba
behavioral2/memory/4736-268-0x0000000000400000-0x0000000003118000-memory.dmp	family_glupteba
behavioral2/memory/4736-270-0x0000000000400000-0x0000000003118000-memory.dmp	family_glupteba
behavioral2/memory/4736-272-0x0000000000400000-0x0000000003118000-memory.dmp	family_glupteba
behavioral2/memory/4736-274-0x0000000000400000-0x0000000003118000-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
2164	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
4736	csrss.exe
3820	injector.exe
1192	windefender.exe
2368	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000100000002a994-249.dat	upx
behavioral2/memory/1192-253-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2368-255-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2368-259-0x0000000000400000-0x00000000008DF000-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-1-5-21-834482027-582050234-2368284635-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-834482027-582050234-2368284635-1000\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 created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe

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	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
File created	C:\Windows\rss\csrss.exe	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.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
1960	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
812	schtasks.exe
4636	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2451 = "Saint Pierre Daylight Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2842 = "Saratov Standard Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-104 = "Central Brazilian Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-501 = "Nepal Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-562 = "SE Asia Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-105 = "Central Brazilian Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-911 = "Mauritius Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-122 = "SA Pacific Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.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\C:\Windows\system32\,@tzres.dll,-2752 = "Tomsk Standard Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-272 = "Greenwich Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-372 = "Jerusalem Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-412 = "E. Africa Standard Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1932 = "Russia TZ 11 Standard Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2891 = "Sudan Daylight Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	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\ProxyBypass = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2791 = "Novosibirsk Daylight Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1022 = "Bangladesh Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-342 = "Egypt Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-631 = "Tokyo Daylight Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-671 = "AUS Eastern Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-12 = "Azores Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-361 = "GTB Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-242 = "Samoa Standard Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.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,-381 = "South Africa Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-601 = "Taipei 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\26\52C64B7E\@tzres.dll,-652 = "AUS Central Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2572 = "Turks and Caicos Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	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\26\52C64B7E\@tzres.dll,-335 = "Jordan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2941 = "Sao Tome Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-932 = "Coordinated Universal Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time"	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4652	powershell.exe
4652	powershell.exe
704	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
704	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
2788	powershell.exe
2788	powershell.exe
4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
2580	powershell.exe
2580	powershell.exe
2524	powershell.exe
2524	powershell.exe
4944	powershell.exe
4944	powershell.exe
3064	powershell.exe
3064	powershell.exe
2968	powershell.exe
2968	powershell.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
4736	csrss.exe
4736	csrss.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
4736	csrss.exe
4736	csrss.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
4736	csrss.exe
4736	csrss.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe
3820	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	4652	powershell.exe
Token: SeDebugPrivilege	704	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Token: SeImpersonatePrivilege	704	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
Token: SeDebugPrivilege	2788	powershell.exe
Token: SeDebugPrivilege	2580	powershell.exe
Token: SeDebugPrivilege	2524	powershell.exe
Token: SeDebugPrivilege	4944	powershell.exe
Token: SeDebugPrivilege	3064	powershell.exe
Token: SeDebugPrivilege	2968	powershell.exe
Token: SeSystemEnvironmentPrivilege	4736	csrss.exe
Token: SeSecurityPrivilege	1960	sc.exe
Token: SeSecurityPrivilege	1960	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 704 wrote to memory of 4652	704	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe	78
PID 704 wrote to memory of 4652	704	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe	78
PID 704 wrote to memory of 4652	704	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe	78
PID 4932 wrote to memory of 2788	4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe	83
PID 4932 wrote to memory of 2788	4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe	83
PID 4932 wrote to memory of 2788	4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe	83
PID 4932 wrote to memory of 3268	4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe	85
PID 4932 wrote to memory of 3268	4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe	85
PID 3268 wrote to memory of 2164	3268	cmd.exe	87
PID 3268 wrote to memory of 2164	3268	cmd.exe	87
PID 4932 wrote to memory of 2580	4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe	88
PID 4932 wrote to memory of 2580	4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe	88
PID 4932 wrote to memory of 2580	4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe	88
PID 4932 wrote to memory of 2524	4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe	90
PID 4932 wrote to memory of 2524	4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe	90
PID 4932 wrote to memory of 2524	4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe	90
PID 4932 wrote to memory of 4736	4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe	92
PID 4932 wrote to memory of 4736	4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe	92
PID 4932 wrote to memory of 4736	4932	7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe	92
PID 4736 wrote to memory of 4944	4736	csrss.exe	93
PID 4736 wrote to memory of 4944	4736	csrss.exe	93
PID 4736 wrote to memory of 4944	4736	csrss.exe	93
PID 4736 wrote to memory of 3064	4736	csrss.exe	98
PID 4736 wrote to memory of 3064	4736	csrss.exe	98
PID 4736 wrote to memory of 3064	4736	csrss.exe	98
PID 4736 wrote to memory of 2968	4736	csrss.exe	101
PID 4736 wrote to memory of 2968	4736	csrss.exe	101
PID 4736 wrote to memory of 2968	4736	csrss.exe	101
PID 4736 wrote to memory of 3820	4736	csrss.exe	103
PID 4736 wrote to memory of 3820	4736	csrss.exe	103
PID 1192 wrote to memory of 3124	1192	windefender.exe	109
PID 1192 wrote to memory of 3124	1192	windefender.exe	109
PID 1192 wrote to memory of 3124	1192	windefender.exe	109
PID 3124 wrote to memory of 1960	3124	cmd.exe	110
PID 3124 wrote to memory of 1960	3124	cmd.exe	110
PID 3124 wrote to memory of 1960	3124	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\7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
"C:\Users\Admin\AppData\Local\Temp\7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:704
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4652
- C:\Users\Admin\AppData\Local\Temp\7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.exe
  "C:\Users\Admin\AppData\Local\Temp\7ea3a6816b6d094a43fd438278692d7b0489bd615e00c7099863c8f2934549f3.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:4932
- - 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:2788
- - 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:3268
  - - 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:2164
- - 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:2580
- - 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:2524
- - 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:4736
  - - 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:4944
  - - 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:4636
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:3348
  - - 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:3064
  - - 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:2968
  - - 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:3820
  - - 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:812
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:1192
    - - 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:3124
      - 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:1960

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2368

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_mefjbx3u.mtv.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mefjbx3u.mtv.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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injector.exe

Path C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
Size 281KB
SHA256 5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
MD5 d98e33b66343e7c96158444127a117f6
SHA1 bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA512 705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
SSDEEP 3072:qbHszDaOJ8u2HHFIWr6e29kOnK7qFQ8wMii5I7kGvNjzMuszHshoY46bEydJ+dK9:SA3IlIA6e29vngqS8wMmuooh8z+8F
MD5 SHA1 SHA512 SSDEEP

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powershell.exe.log

Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Size 2KB
SHA256 e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9
MD5 ac4917a885cf6050b1a483e4bc4d2ea5
SHA1 b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f
SHA512 092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d
MD5 SHA1 SHA512

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