glupteba | 079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2

Analysis

max time kernel
149s
max time network
149s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
01/05/2024, 04:50

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General

Target

079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Size

4.1MB
MD5

76bd1a7f1723f2f601029f077d940d85
SHA1

84ded836b2fb0e0e3dbab4881fb522c924cf27bc
SHA256

079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2
SHA512

cb9487bc157ab48b952967d206ca6c3181d422ad3470b7c19c165d1ca019dfce6bc320b4334775f886170aa6f77deffb1a87038f0117c0ba619dcea11760755f
SSDEEP

98304:XnLDm1XoLdMR8t8Rupb9uumF9S8JB25VPPQ2VTa74pIHCae9:XfE4ht8Q1UumFLAPQ2VTFpIiaQ

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/1708-2-0x00000000051A0000-0x0000000005A8B000-memory.dmp	family_glupteba
behavioral2/memory/1708-3-0x0000000000400000-0x0000000002ED6000-memory.dmp	family_glupteba
behavioral2/memory/1708-24-0x0000000000400000-0x0000000002ED6000-memory.dmp	family_glupteba
behavioral2/memory/1708-51-0x0000000000400000-0x0000000002ED6000-memory.dmp	family_glupteba
behavioral2/memory/1708-53-0x00000000051A0000-0x0000000005A8B000-memory.dmp	family_glupteba
behavioral2/memory/2496-123-0x0000000000400000-0x0000000002ED6000-memory.dmp	family_glupteba
behavioral2/memory/1524-148-0x0000000000400000-0x0000000002ED6000-memory.dmp	family_glupteba
behavioral2/memory/1524-196-0x0000000000400000-0x0000000002ED6000-memory.dmp	family_glupteba
behavioral2/memory/1524-203-0x0000000000400000-0x0000000002ED6000-memory.dmp	family_glupteba
behavioral2/memory/1524-205-0x0000000000400000-0x0000000002ED6000-memory.dmp	family_glupteba
behavioral2/memory/1524-207-0x0000000000400000-0x0000000002ED6000-memory.dmp	family_glupteba
behavioral2/memory/1524-209-0x0000000000400000-0x0000000002ED6000-memory.dmp	family_glupteba
behavioral2/memory/1524-211-0x0000000000400000-0x0000000002ED6000-memory.dmp	family_glupteba
behavioral2/memory/1524-213-0x0000000000400000-0x0000000002ED6000-memory.dmp	family_glupteba
behavioral2/memory/1524-215-0x0000000000400000-0x0000000002ED6000-memory.dmp	family_glupteba
behavioral2/memory/1524-217-0x0000000000400000-0x0000000002ED6000-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
2220	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
1524	csrss.exe
3736	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-1-5-21-2878097196-921257239-309638238-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878097196-921257239-309638238-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	csrss.exe

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

Query Registry
T1012

Manipulates WinMonFS driver. 1 IoCs

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

rootkit evasion

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

Drops file in System32 directory 7 IoCs

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

Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\VBoxMiniRdrDN	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
File created	C:\Windows\rss\csrss.exe	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.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
3836	schtasks.exe
4608	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-181 = "Mountain Daylight Time (Mexico)"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1931 = "Russia TZ 11 Daylight Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2892 = "Sudan Standard Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	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\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.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\UNCAsIntranet = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-291 = "Central European Daylight Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2492 = "Aus Central W. Standard Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2791 = "Novosibirsk Daylight Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.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\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-272 = "Greenwich Standard Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-892 = "Morocco Standard Time"	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4188	powershell.exe
4188	powershell.exe
1708	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
1708	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
1284	powershell.exe
1284	powershell.exe
2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
3780	powershell.exe
3780	powershell.exe
4932	powershell.exe
4932	powershell.exe
4312	powershell.exe
4312	powershell.exe
3852	powershell.exe
3852	powershell.exe
2772	powershell.exe
2772	powershell.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
1524	csrss.exe
1524	csrss.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
1524	csrss.exe
1524	csrss.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe
3736	injector.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	4188	powershell.exe
Token: SeDebugPrivilege	1708	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Token: SeImpersonatePrivilege	1708	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
Token: SeDebugPrivilege	1284	powershell.exe
Token: SeDebugPrivilege	3780	powershell.exe
Token: SeDebugPrivilege	4932	powershell.exe
Token: SeDebugPrivilege	4312	powershell.exe
Token: SeDebugPrivilege	3852	powershell.exe
Token: SeDebugPrivilege	2772	powershell.exe
Token: SeSystemEnvironmentPrivilege	1524	csrss.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 4188	1708	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe	81
PID 1708 wrote to memory of 4188	1708	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe	81
PID 1708 wrote to memory of 4188	1708	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe	81
PID 2496 wrote to memory of 1284	2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe	86
PID 2496 wrote to memory of 1284	2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe	86
PID 2496 wrote to memory of 1284	2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe	86
PID 2496 wrote to memory of 3964	2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe	88
PID 2496 wrote to memory of 3964	2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe	88
PID 3964 wrote to memory of 2220	3964	cmd.exe	90
PID 3964 wrote to memory of 2220	3964	cmd.exe	90
PID 2496 wrote to memory of 3780	2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe	91
PID 2496 wrote to memory of 3780	2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe	91
PID 2496 wrote to memory of 3780	2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe	91
PID 2496 wrote to memory of 4932	2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe	93
PID 2496 wrote to memory of 4932	2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe	93
PID 2496 wrote to memory of 4932	2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe	93
PID 2496 wrote to memory of 1524	2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe	95
PID 2496 wrote to memory of 1524	2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe	95
PID 2496 wrote to memory of 1524	2496	079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe	95
PID 1524 wrote to memory of 4312	1524	csrss.exe	96
PID 1524 wrote to memory of 4312	1524	csrss.exe	96
PID 1524 wrote to memory of 4312	1524	csrss.exe	96
PID 1524 wrote to memory of 3852	1524	csrss.exe	102
PID 1524 wrote to memory of 3852	1524	csrss.exe	102
PID 1524 wrote to memory of 3852	1524	csrss.exe	102
PID 1524 wrote to memory of 2772	1524	csrss.exe	104
PID 1524 wrote to memory of 2772	1524	csrss.exe	104
PID 1524 wrote to memory of 2772	1524	csrss.exe	104
PID 1524 wrote to memory of 3736	1524	csrss.exe	106
PID 1524 wrote to memory of 3736	1524	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\079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
"C:\Users\Admin\AppData\Local\Temp\079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4188
- C:\Users\Admin\AppData\Local\Temp\079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.exe
  "C:\Users\Admin\AppData\Local\Temp\079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2.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:2496
- - 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:1284
- - 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:3964
  - - 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:2220
- - 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:3780
- - 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:4932
- - 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:1524
  - - 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:4312
  - - 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:3836
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:388
  - - 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:3852
  - - 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:2772
  - - 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:3736
  - - 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:4608

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

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ssbcvo2q.0xu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe

Filesize
281KB

MD5
d98e33b66343e7c96158444127a117f6

SHA1
bb716c5509a2bf345c6c1152f6e3e1452d39d50d

SHA256
5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

SHA512
705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
ac4917a885cf6050b1a483e4bc4d2ea5

SHA1
b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f

SHA256
e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9

SHA512
092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

Filesize
19KB

MD5
6bb598ef5612436d06ac22e429563fec

SHA1
4d515e6363f520c4113cd9b4506b5d09969fd6a0

SHA256
f8838b2d8bd56b4db33d06bea1aff57e4df3631c1a01928dd0d555a9eb3ef765

SHA512
f974a15fe3c4cb0f6e56135ea850f478a9064aba01c6893afe000b56a57b827e51064fc558ff5955850870704d83446267977179b44e28169a936f791401f0ef

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

Filesize
19KB

MD5
2e3e39e04b638bc07a22abf6cd022256

SHA1
238d02de76d88743bac64853027182845db61203

SHA256
08b7fdbb8990a14904f2a9e91c15fd59fc078c115887bff16f5eb15552e2d01b

SHA512
523d1749e197ca0834b16d7fd64a2c1992ba5f0aa8ddbd6b217947095053169b8b4753ddc50874bfca10b86d717044fade15ad77844239836b4638dc90133342

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

Filesize
19KB

MD5
bacaccb51542157c99ae7f20891ce1cd

SHA1
6a8902ff418bc8f8887afa6ef495a7aae7a88971

SHA256
10631a4ae51e8a8770bb2817cf006ab92762099ad538fe5f3f3df45d6df15432

SHA512
b9e6b8af6acbde689918853192077e9a11a4da55b2bfbd1e803f8b99166a1e4ed004fbac0fc7f2671527b6962bd2496f26c7a348e35263ede986b60adc04b361

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

Filesize
19KB

MD5
1113e8e47fb2875e1d32115dc24ced40

SHA1
56f0bcbfb684b2a1eea67e6b2c11b11732d31eea

SHA256
30aa1610b6f87f2c1c06f4c32cf2c98eef5351e8b6c03f8bcc96acf1fa52ac11

SHA512
c2d9e3d47f899b53312560fcb9d60fd3f05644292947679f3e3ca2d586d904af082e184402e260e391805d2a3557b63a6d63b67c7190961a647e82c6ddcac1ff

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

Filesize
19KB

MD5
95ec6852fd168d76400cc006badc5931

SHA1
ee28f94f819a8a030aba4c504a5454ba095e1d63

SHA256
813f2c5192a04cac15c2b559b2b91acd5ff479b4f4a59b75c5aef03385843a01

SHA512
75f807a5f7921b4621aeaaeadb197e1fb0553f9c2c777604ca5675d47520f58af3c5c1318ed272f7759ccac587c9f501ff782c0ddda1335cf13d176a7f2940fc

Download Submit
C:\Windows\rss\csrss.exe

Filesize
4.1MB

MD5
76bd1a7f1723f2f601029f077d940d85

SHA1
84ded836b2fb0e0e3dbab4881fb522c924cf27bc

SHA256
079bf2cfc5ad89ada232fc9b7ac47716669d510a4a0e336025bf4cdbdb1e61d2

SHA512
cb9487bc157ab48b952967d206ca6c3181d422ad3470b7c19c165d1ca019dfce6bc320b4334775f886170aa6f77deffb1a87038f0117c0ba619dcea11760755f

Download Submit
memory/1284-73-0x00000000073B0000-0x00000000073C1000-memory.dmp

Filesize
68KB

Download
memory/1284-62-0x00000000703A0000-0x00000000703EC000-memory.dmp

Filesize
304KB

Download
memory/1284-72-0x0000000007080000-0x0000000007124000-memory.dmp

Filesize
656KB

Download
memory/1284-63-0x0000000070520000-0x0000000070877000-memory.dmp

Filesize
3.3MB

Download
memory/1284-74-0x0000000007400000-0x0000000007415000-memory.dmp

Filesize
84KB

Download
memory/1524-209-0x0000000000400000-0x0000000002ED6000-memory.dmp

Filesize
42.8MB

Download
memory/1524-196-0x0000000000400000-0x0000000002ED6000-memory.dmp

Filesize
42.8MB

Download
memory/1524-205-0x0000000000400000-0x0000000002ED6000-memory.dmp

Filesize
42.8MB

Download
memory/1524-211-0x0000000000400000-0x0000000002ED6000-memory.dmp

Filesize
42.8MB

Download
memory/1524-213-0x0000000000400000-0x0000000002ED6000-memory.dmp

Filesize
42.8MB

Download
memory/1524-215-0x0000000000400000-0x0000000002ED6000-memory.dmp

Filesize
42.8MB

Download
memory/1524-217-0x0000000000400000-0x0000000002ED6000-memory.dmp

Filesize
42.8MB

Download
memory/1524-148-0x0000000000400000-0x0000000002ED6000-memory.dmp

Filesize
42.8MB

Download
memory/1524-207-0x0000000000400000-0x0000000002ED6000-memory.dmp

Filesize
42.8MB

Download
memory/1524-203-0x0000000000400000-0x0000000002ED6000-memory.dmp

Filesize
42.8MB

Download
memory/1708-24-0x0000000000400000-0x0000000002ED6000-memory.dmp

Filesize
42.8MB

Download
memory/1708-53-0x00000000051A0000-0x0000000005A8B000-memory.dmp

Filesize
8.9MB

Download
memory/1708-2-0x00000000051A0000-0x0000000005A8B000-memory.dmp

Filesize
8.9MB

Download
memory/1708-3-0x0000000000400000-0x0000000002ED6000-memory.dmp

Filesize
42.8MB

Download
memory/1708-1-0x00000000035F0000-0x00000000039F3000-memory.dmp

Filesize
4.0MB

Download
memory/1708-52-0x00000000035F0000-0x00000000039F3000-memory.dmp

Filesize
4.0MB

Download
memory/1708-51-0x0000000000400000-0x0000000002ED6000-memory.dmp

Filesize
42.8MB

Download
memory/2496-123-0x0000000000400000-0x0000000002ED6000-memory.dmp

Filesize
42.8MB

Download
memory/2772-186-0x0000000070510000-0x0000000070867000-memory.dmp

Filesize
3.3MB

Download
memory/2772-180-0x0000000005AF0000-0x0000000005E47000-memory.dmp

Filesize
3.3MB

Download
memory/2772-185-0x00000000702C0000-0x000000007030C000-memory.dmp

Filesize
304KB

Download
memory/3780-87-0x0000000005C80000-0x0000000005FD7000-memory.dmp

Filesize
3.3MB

Download
memory/3780-89-0x00000000703A0000-0x00000000703EC000-memory.dmp

Filesize
304KB

Download
memory/3780-90-0x0000000070540000-0x0000000070897000-memory.dmp

Filesize
3.3MB

Download
memory/3852-161-0x00000000702C0000-0x000000007030C000-memory.dmp

Filesize
304KB

Download
memory/3852-158-0x0000000005C30000-0x0000000005F87000-memory.dmp

Filesize
3.3MB

Download
memory/3852-173-0x0000000005FB0000-0x0000000005FC5000-memory.dmp

Filesize
84KB

Download
memory/3852-172-0x0000000007760000-0x0000000007771000-memory.dmp

Filesize
68KB

Download
memory/3852-171-0x0000000007430000-0x00000000074D4000-memory.dmp

Filesize
656KB

Download
memory/3852-162-0x00000000704F0000-0x0000000070847000-memory.dmp

Filesize
3.3MB

Download
memory/3852-160-0x0000000006710000-0x000000000675C000-memory.dmp

Filesize
304KB

Download
memory/4188-37-0x0000000007C80000-0x0000000007D24000-memory.dmp

Filesize
656KB

Download
memory/4188-45-0x0000000007F60000-0x0000000007F7A000-memory.dmp

Filesize
104KB

Download
memory/4188-4-0x0000000003320000-0x0000000003356000-memory.dmp

Filesize
216KB

Download
memory/4188-40-0x0000000007DE0000-0x0000000007DEA000-memory.dmp

Filesize
40KB

Download
memory/4188-39-0x0000000007DA0000-0x0000000007DBA000-memory.dmp

Filesize
104KB

Download
memory/4188-38-0x00000000083F0000-0x0000000008A6A000-memory.dmp

Filesize
6.5MB

Download
memory/4188-5-0x0000000074130000-0x00000000748E1000-memory.dmp

Filesize
7.7MB

Download
memory/4188-6-0x0000000005C70000-0x000000000629A000-memory.dmp

Filesize
6.2MB

Download
memory/4188-26-0x00000000703A0000-0x00000000703EC000-memory.dmp

Filesize
304KB

Download
memory/4188-41-0x0000000007EA0000-0x0000000007F36000-memory.dmp

Filesize
600KB

Download
memory/4188-36-0x0000000007C60000-0x0000000007C7E000-memory.dmp

Filesize
120KB

Download
memory/4188-42-0x0000000007E10000-0x0000000007E21000-memory.dmp

Filesize
68KB

Download
memory/4188-49-0x0000000074130000-0x00000000748E1000-memory.dmp

Filesize
7.7MB

Download
memory/4188-43-0x0000000007E50000-0x0000000007E5E000-memory.dmp

Filesize
56KB

Download
memory/4188-44-0x0000000007E60000-0x0000000007E75000-memory.dmp

Filesize
84KB

Download
memory/4188-8-0x0000000005630000-0x0000000005640000-memory.dmp

Filesize
64KB

Download
memory/4188-46-0x0000000007F40000-0x0000000007F48000-memory.dmp

Filesize
32KB

Download
memory/4188-27-0x0000000070520000-0x0000000070877000-memory.dmp

Filesize
3.3MB

Download
memory/4188-25-0x0000000007C20000-0x0000000007C54000-memory.dmp

Filesize
208KB

Download
memory/4188-23-0x0000000006D90000-0x0000000006DD6000-memory.dmp

Filesize
280KB

Download
memory/4188-22-0x0000000006820000-0x000000000686C000-memory.dmp

Filesize
304KB

Download
memory/4188-21-0x00000000067F0000-0x000000000680E000-memory.dmp

Filesize
120KB

Download
memory/4188-20-0x00000000063F0000-0x0000000006747000-memory.dmp

Filesize
3.3MB

Download
memory/4188-15-0x0000000005B00000-0x0000000005B66000-memory.dmp

Filesize
408KB

Download
memory/4188-17-0x00000000062A0000-0x0000000006306000-memory.dmp

Filesize
408KB

Download
memory/4188-14-0x00000000059E0000-0x0000000005A02000-memory.dmp

Filesize
136KB

Download
memory/4188-7-0x0000000005630000-0x0000000005640000-memory.dmp

Filesize
64KB

Download
memory/4312-137-0x0000000070520000-0x0000000070877000-memory.dmp

Filesize
3.3MB

Download
memory/4312-136-0x00000000703A0000-0x00000000703EC000-memory.dmp

Filesize
304KB

Download
memory/4932-109-0x00000000703A0000-0x00000000703EC000-memory.dmp

Filesize
304KB

Download
memory/4932-110-0x0000000070520000-0x0000000070877000-memory.dmp

Filesize
3.3MB

Download