glupteba | e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a

Analysis

max time kernel
153s
max time network
158s
platform
windows11-21h2_x64
resource
win11-20240221-en
resource tags

arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
submitted
04/04/2024, 23:44

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General

Target
e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Size 4.1MB
Sample240404-3rhl7sef47
SHA256 e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a
MD5 b46306e68b92e55f436d61f89801699d
SHA1 234ba2492f31067420ebdbfec2b45ee19e94798f
SHA512 720dc81a23a96bf9702d84da4dd219f43916b32fd0fe78b0620aa8d8cfae5fceea3cf1f3cd646a3ab56ab06eecb62d0186b78c1768c11b1f158bc2ad429d4418
SSDEEP 98304:prBssHPQfRhBeAp3gzv4ts728Vi/BudLKgEgSv++:TeRe4UgBuxbC1
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit

Malware Config

Signatures

Glupteba
Glupteba is a modular loader written in Golang with various components.
loader dropper glupteba

Glupteba payload 16 IoCs

resource	yara_rule
behavioral2/memory/4616-2-0x0000000005140000-0x0000000005A2B000-memory.dmp	family_glupteba
behavioral2/memory/4616-3-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/4616-4-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/4616-29-0x0000000005140000-0x0000000005A2B000-memory.dmp	family_glupteba
behavioral2/memory/4616-41-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/4616-62-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/4616-64-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/2088-67-0x00000000050B0000-0x000000000599B000-memory.dmp	family_glupteba
behavioral2/memory/2088-68-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/2088-69-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/2088-100-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/2088-116-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/2088-128-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/2088-161-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/2880-225-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/2880-260-0x0000000000400000-0x0000000002F3F000-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
3920	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
2880	csrss.exe
4796	injector.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3852399462-405385529-394778097-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3852399462-405385529-394778097-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	csrss.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Manipulates WinMonFS driver. 1 IoCs

Roottkits write to WinMonFS to hide directories/files from being detected.

rootkit evasion

description	ioc	Process
File opened for modification	\??\WinMonFS	csrss.exe

Drops file in System32 directory 7 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File created	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	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
File created	C:\Windows\rss\csrss.exe	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.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
1164	schtasks.exe
4628	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\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	powershell.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\trust\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-631 = "Tokyo Daylight Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-272 = "Greenwich Standard Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2771 = "Omsk Daylight Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	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\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2181 = "Astrakhan Daylight Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-632 = "Tokyo Standard Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	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\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	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\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-51 = "Greenland Daylight Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	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\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.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\C:\Windows\system32\,@tzres.dll,-384 = "Namibia Daylight Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2752 = "Tomsk Standard Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1971 = "Belarus Daylight Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	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\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.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"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	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\C:\Windows\system32\,@tzres.dll,-2161 = "Altai Daylight Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1022 = "Bangladesh Standard Time"	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe

Suspicious behavior: EnumeratesProcesses 46 IoCs

pid	Process
4744	powershell.exe
4744	powershell.exe
4616	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
4616	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
1780	powershell.exe
1780	powershell.exe
2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
1136	powershell.exe
1136	powershell.exe
3156	powershell.exe
3156	powershell.exe
2072	powershell.exe
2072	powershell.exe
4372	powershell.exe
4372	powershell.exe
4056	powershell.exe
4056	powershell.exe
4796	injector.exe
4796	injector.exe
4796	injector.exe
4796	injector.exe
4796	injector.exe
4796	injector.exe
4796	injector.exe
4796	injector.exe
2880	csrss.exe
2880	csrss.exe
4796	injector.exe
4796	injector.exe
4796	injector.exe
4796	injector.exe
4796	injector.exe
4796	injector.exe
2880	csrss.exe
2880	csrss.exe
4796	injector.exe
4796	injector.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	4744	powershell.exe
Token: SeDebugPrivilege	4616	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Token: SeImpersonatePrivilege	4616	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
Token: SeDebugPrivilege	1780	powershell.exe
Token: SeDebugPrivilege	1136	powershell.exe
Token: SeDebugPrivilege	3156	powershell.exe
Token: SeDebugPrivilege	2072	powershell.exe
Token: SeDebugPrivilege	4372	powershell.exe
Token: SeDebugPrivilege	4056	powershell.exe
Token: SeSystemEnvironmentPrivilege	2880	csrss.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 4744	4616	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe	81
PID 4616 wrote to memory of 4744	4616	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe	81
PID 4616 wrote to memory of 4744	4616	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe	81
PID 2088 wrote to memory of 1780	2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe	86
PID 2088 wrote to memory of 1780	2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe	86
PID 2088 wrote to memory of 1780	2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe	86
PID 2088 wrote to memory of 3476	2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe	88
PID 2088 wrote to memory of 3476	2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe	88
PID 3476 wrote to memory of 3920	3476	cmd.exe	90
PID 3476 wrote to memory of 3920	3476	cmd.exe	90
PID 2088 wrote to memory of 1136	2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe	91
PID 2088 wrote to memory of 1136	2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe	91
PID 2088 wrote to memory of 1136	2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe	91
PID 2088 wrote to memory of 3156	2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe	93
PID 2088 wrote to memory of 3156	2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe	93
PID 2088 wrote to memory of 3156	2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe	93
PID 2088 wrote to memory of 2880	2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe	95
PID 2088 wrote to memory of 2880	2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe	95
PID 2088 wrote to memory of 2880	2088	e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe	95
PID 2880 wrote to memory of 2072	2880	csrss.exe	96
PID 2880 wrote to memory of 2072	2880	csrss.exe	96
PID 2880 wrote to memory of 2072	2880	csrss.exe	96
PID 2880 wrote to memory of 4372	2880	csrss.exe	101
PID 2880 wrote to memory of 4372	2880	csrss.exe	101
PID 2880 wrote to memory of 4372	2880	csrss.exe	101
PID 2880 wrote to memory of 4056	2880	csrss.exe	104
PID 2880 wrote to memory of 4056	2880	csrss.exe	104
PID 2880 wrote to memory of 4056	2880	csrss.exe	104
PID 2880 wrote to memory of 4796	2880	csrss.exe	106
PID 2880 wrote to memory of 4796	2880	csrss.exe	106

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\e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
"C:\Users\Admin\AppData\Local\Temp\e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4744
- C:\Users\Admin\AppData\Local\Temp\e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.exe
  "C:\Users\Admin\AppData\Local\Temp\e5d79644f2fd66eb1f46e8b7cf550c075b7ec30c11dbc064dc7b2b5b0413e66a.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:2088
- - 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:1780
- - 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:3476
  - - 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:3920
- - 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:1136
- - 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:3156
- - C:\Windows\rss\csrss.exe
    C:\Windows\rss\csrss.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Manipulates WinMonFS driver.
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2880
  - - 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:2072
  - - 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:1164
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:5056
  - - 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:4372
  - - 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:4056
  - - 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:4796
  - - 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:4628

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_jciqqvsi.pw3.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jciqqvsi.pw3.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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