glupteba | 8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3

Analysis

max time kernel
150s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
19/05/2024, 06:01

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Report Analysis Logs

General

Target
8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Size 4.1MB
Sample240519-grdscsdf51
SHA256 8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3
MD5 605c28e99106f97c17e8a0c5dbf95f6f
SHA1 82f63ca5974daf92b48b21f6c5fb5fc0b573cd1c
SHA512 845e15638737abbee9f4ad38c3f8ff09a6bf69a8b12901aef1dba18947543960ecf19ab87180477458adc2df27019860e8ee0b76b633b3e7f1b59b06ec69f3bc
SSDEEP 98304:EWlQWNKQPwrulMpohZQjk4lnBk2/sgseYryCqOgI7KD2bsOvJZ+2+Yz:EW16ulMesXlnBp/sjruCqmtIOvag
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion execution loader persistence rootkit

Malware Config

Signatures

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

Glupteba payload 19 IoCs

resource	yara_rule
behavioral2/memory/1424-2-0x0000000004700000-0x0000000004FEB000-memory.dmp	family_glupteba
behavioral2/memory/1424-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/1424-53-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/1424-54-0x0000000004700000-0x0000000004FEB000-memory.dmp	family_glupteba
behavioral2/memory/1424-51-0x0000000000400000-0x0000000002362000-memory.dmp	family_glupteba
behavioral2/memory/2476-125-0x0000000000400000-0x0000000002362000-memory.dmp	family_glupteba
behavioral2/memory/2032-203-0x0000000000400000-0x0000000002362000-memory.dmp	family_glupteba
behavioral2/memory/2032-204-0x0000000000400000-0x0000000002362000-memory.dmp	family_glupteba
behavioral2/memory/2032-205-0x0000000000400000-0x0000000002362000-memory.dmp	family_glupteba
behavioral2/memory/2032-206-0x0000000000400000-0x0000000002362000-memory.dmp	family_glupteba
behavioral2/memory/2032-207-0x0000000000400000-0x0000000002362000-memory.dmp	family_glupteba
behavioral2/memory/2032-208-0x0000000000400000-0x0000000002362000-memory.dmp	family_glupteba
behavioral2/memory/2032-209-0x0000000000400000-0x0000000002362000-memory.dmp	family_glupteba
behavioral2/memory/2032-210-0x0000000000400000-0x0000000002362000-memory.dmp	family_glupteba
behavioral2/memory/2032-211-0x0000000000400000-0x0000000002362000-memory.dmp	family_glupteba
behavioral2/memory/2032-212-0x0000000000400000-0x0000000002362000-memory.dmp	family_glupteba
behavioral2/memory/2032-213-0x0000000000400000-0x0000000002362000-memory.dmp	family_glupteba
behavioral2/memory/2032-214-0x0000000000400000-0x0000000002362000-memory.dmp	family_glupteba
behavioral2/memory/2032-215-0x0000000000400000-0x0000000002362000-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
3912	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
2032	csrss.exe
1112	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-1-5-21-3433428765-2473475212-4279855560-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3433428765-2473475212-4279855560-1000\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 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

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	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
File created	C:\Windows\rss\csrss.exe	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3752	powershell.exe
1484	powershell.exe
4024	powershell.exe
532	powershell.exe
4008	powershell.exe
532	powershell.exe
3016	powershell.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
3628	schtasks.exe
1416	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-104 = "Central Brazilian Daylight Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-982 = "Kamchatka Standard Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2392 = "Aleutian Standard Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.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
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2511 = "Lord Howe Daylight Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-362 = "GTB Standard Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2941 = "Sao Tome Daylight Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1841 = "Russia TZ 4 Daylight Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2451 = "Saint Pierre Daylight Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2572 = "Turks and Caicos Standard Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2752 = "Tomsk Standard Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-82 = "Atlantic Standard Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-441 = "Arabian Daylight Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2531 = "Chatham Islands Daylight Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-932 = "Coordinated Universal Time"	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4008	powershell.exe
4008	powershell.exe
1424	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
1424	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
532	powershell.exe
532	powershell.exe
2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
3016	powershell.exe
3016	powershell.exe
3752	powershell.exe
3752	powershell.exe
1484	powershell.exe
1484	powershell.exe
4024	powershell.exe
4024	powershell.exe
532	powershell.exe
532	powershell.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
2032	csrss.exe
2032	csrss.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
2032	csrss.exe
2032	csrss.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe
1112	injector.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	4008	powershell.exe
Token: SeDebugPrivilege	1424	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Token: SeImpersonatePrivilege	1424	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
Token: SeDebugPrivilege	532	powershell.exe
Token: SeDebugPrivilege	3016	powershell.exe
Token: SeDebugPrivilege	3752	powershell.exe
Token: SeDebugPrivilege	1484	powershell.exe
Token: SeDebugPrivilege	4024	powershell.exe
Token: SeDebugPrivilege	532	powershell.exe
Token: SeSystemEnvironmentPrivilege	2032	csrss.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1424 wrote to memory of 4008	1424	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe	81
PID 1424 wrote to memory of 4008	1424	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe	81
PID 1424 wrote to memory of 4008	1424	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe	81
PID 2476 wrote to memory of 532	2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe	89
PID 2476 wrote to memory of 532	2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe	89
PID 2476 wrote to memory of 532	2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe	89
PID 2476 wrote to memory of 3440	2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe	91
PID 2476 wrote to memory of 3440	2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe	91
PID 3440 wrote to memory of 3912	3440	cmd.exe	93
PID 3440 wrote to memory of 3912	3440	cmd.exe	93
PID 2476 wrote to memory of 3016	2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe	94
PID 2476 wrote to memory of 3016	2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe	94
PID 2476 wrote to memory of 3016	2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe	94
PID 2476 wrote to memory of 3752	2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe	96
PID 2476 wrote to memory of 3752	2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe	96
PID 2476 wrote to memory of 3752	2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe	96
PID 2476 wrote to memory of 2032	2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe	98
PID 2476 wrote to memory of 2032	2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe	98
PID 2476 wrote to memory of 2032	2476	8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe	98
PID 2032 wrote to memory of 1484	2032	csrss.exe	99
PID 2032 wrote to memory of 1484	2032	csrss.exe	99
PID 2032 wrote to memory of 1484	2032	csrss.exe	99
PID 2032 wrote to memory of 4024	2032	csrss.exe	108
PID 2032 wrote to memory of 4024	2032	csrss.exe	108
PID 2032 wrote to memory of 4024	2032	csrss.exe	108
PID 2032 wrote to memory of 532	2032	csrss.exe	110
PID 2032 wrote to memory of 532	2032	csrss.exe	110
PID 2032 wrote to memory of 532	2032	csrss.exe	110
PID 2032 wrote to memory of 1112	2032	csrss.exe	112
PID 2032 wrote to memory of 1112	2032	csrss.exe	112

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\8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
"C:\Users\Admin\AppData\Local\Temp\8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1424
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4008
- C:\Users\Admin\AppData\Local\Temp\8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.exe
  "C:\Users\Admin\AppData\Local\Temp\8c588d4f64ea4b95b0fc1f41e0c07aff60b3cd5dfb4dcaad1877f426109b6cf3.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:2476
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Command and Scripting Interpreter: PowerShell
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:532
- - 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:3440
  - - 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:3912
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Command and Scripting Interpreter: PowerShell
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3016
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Command and Scripting Interpreter: PowerShell
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3752
- - 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:2032
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Command and Scripting Interpreter: PowerShell
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1484
  - - 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:3628
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:3824
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Command and Scripting Interpreter: PowerShell
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4024
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Command and Scripting Interpreter: PowerShell
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:532
  - - 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:1112
  - - 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:1416

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

__PSScriptPolicyTest_nm1xsnlg.fvo.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nm1xsnlg.fvo.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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