glupteba | 90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d

Analysis

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

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
25/04/2024, 15:47

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General

Target
90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Size 4.1MB
Sample240425-s8hnescb5z
SHA256 90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d
MD5 3bfa1f7c31f145ca445484eb8211ec75
SHA1 7e9abd059cdecb6f1d12c409a49c0f9914001e52
SHA512 a35f95ac4f65983d44a503ac56e3672a824800eb34e7a03badb8377c8ceae6a37691bbbc1f5f47a9259be5bd4c4edab56be116adb4cb2aefd25896a308b40716
SSDEEP 98304:ixMvDlpZvb8ZK6Pm1OqC68DUZP3t+NAeQDD60jtf0ZJUQwpesMAQ2H/nDX:iOpbkK6P76wCP3t+NMK0jtGJUQwpe8nL
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit upx

Malware Config

Signatures

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

Glupteba payload 18 IoCs

resource	yara_rule
behavioral2/memory/1276-2-0x00000000052C0000-0x0000000005BAB000-memory.dmp	family_glupteba
behavioral2/memory/1276-3-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/1276-51-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/1276-53-0x00000000052C0000-0x0000000005BAB000-memory.dmp	family_glupteba
behavioral2/memory/4400-63-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/4400-102-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/4400-117-0x0000000003690000-0x0000000003A8F000-memory.dmp	family_glupteba
behavioral2/memory/4400-148-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/4164-225-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/4164-247-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/4164-256-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/4164-258-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/4164-260-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/4164-262-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/4164-264-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/4164-266-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/4164-268-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/4164-270-0x0000000000400000-0x0000000003005000-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
2868	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
4164	csrss.exe
3744	injector.exe
1048	windefender.exe
3804	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002a9e3-250.dat	upx
behavioral2/memory/1048-255-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/3804-257-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/3804-261-0x0000000000400000-0x00000000008DF000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-834482027-582050234-2368284635-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-834482027-582050234-2368284635-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	csrss.exe

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

Query Registry
T1012

Manipulates WinMonFS driver. 1 IoCs

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

rootkit evasion

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

Drops file in System32 directory 7 IoCs

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

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	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
File created	C:\Windows\rss\csrss.exe	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
File created	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\windefender.exe	csrss.exe

Launches sc.exe 1 IoCs

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

pid	Process
4580	sc.exe

Program crash 4 IoCs

pid	pid_target	Process	procid_target
2164	1276	WerFault.exe	76
4248	1276	WerFault.exe	76
400	4400	WerFault.exe	82
4748	4400	WerFault.exe	82

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
1988	schtasks.exe
3128	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time"	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-202 = "US Mountain Standard Time"	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-462 = "Afghanistan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-182 = "Mountain Standard Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-271 = "Greenwich Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2942 = "Sao Tome Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1821 = "Russia TZ 1 Daylight Time"	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-841 = "Argentina Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2392 = "Aleutian Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2432 = "Cuba Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-252 = "Dateline Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-132 = "US Eastern Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2372 = "Easter Island Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-692 = "Tasmania Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2161 = "Altai Daylight Time"	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time"	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.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\Disallowed\CRLs	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\26\52C64B7E\@tzres.dll,-281 = "Central Europe Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-601 = "Taipei Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-221 = "Alaskan Daylight Time"	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time"	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2511 = "Lord Howe Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-92 = "Pacific SA Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-631 = "Tokyo Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time"	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\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\26\52C64B7E\@tzres.dll,-1801 = "Line Islands Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	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\26\52C64B7E\@tzres.dll,-2162 = "Altai Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2182 = "Astrakhan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-104 = "Central Brazilian Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-435 = "Georgian Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time"	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time"	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2872 = "Magallanes Standard Time"	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time"	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-691 = "Tasmania Daylight Time"	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2181 = "Astrakhan Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1021 = "Bangladesh Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time"	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time"	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4184	powershell.exe
4184	powershell.exe
1276	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
1276	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
728	powershell.exe
728	powershell.exe
4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
1616	powershell.exe
1616	powershell.exe
736	powershell.exe
736	powershell.exe
4900	powershell.exe
4900	powershell.exe
4940	powershell.exe
4940	powershell.exe
1628	powershell.exe
1628	powershell.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
4164	csrss.exe
4164	csrss.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
4164	csrss.exe
4164	csrss.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
4164	csrss.exe
4164	csrss.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe
3744	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	4184	powershell.exe
Token: SeDebugPrivilege	1276	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Token: SeImpersonatePrivilege	1276	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
Token: SeDebugPrivilege	728	powershell.exe
Token: SeDebugPrivilege	1616	powershell.exe
Token: SeDebugPrivilege	736	powershell.exe
Token: SeDebugPrivilege	4900	powershell.exe
Token: SeDebugPrivilege	4940	powershell.exe
Token: SeDebugPrivilege	1628	powershell.exe
Token: SeSystemEnvironmentPrivilege	4164	csrss.exe
Token: SeSecurityPrivilege	4580	sc.exe
Token: SeSecurityPrivilege	4580	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1276 wrote to memory of 4184	1276	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe	78
PID 1276 wrote to memory of 4184	1276	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe	78
PID 1276 wrote to memory of 4184	1276	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe	78
PID 4400 wrote to memory of 728	4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe	88
PID 4400 wrote to memory of 728	4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe	88
PID 4400 wrote to memory of 728	4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe	88
PID 4400 wrote to memory of 1880	4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe	90
PID 4400 wrote to memory of 1880	4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe	90
PID 1880 wrote to memory of 2868	1880	cmd.exe	92
PID 1880 wrote to memory of 2868	1880	cmd.exe	92
PID 4400 wrote to memory of 1616	4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe	93
PID 4400 wrote to memory of 1616	4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe	93
PID 4400 wrote to memory of 1616	4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe	93
PID 4400 wrote to memory of 736	4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe	95
PID 4400 wrote to memory of 736	4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe	95
PID 4400 wrote to memory of 736	4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe	95
PID 4400 wrote to memory of 4164	4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe	97
PID 4400 wrote to memory of 4164	4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe	97
PID 4400 wrote to memory of 4164	4400	90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe	97
PID 4164 wrote to memory of 4900	4164	csrss.exe	102
PID 4164 wrote to memory of 4900	4164	csrss.exe	102
PID 4164 wrote to memory of 4900	4164	csrss.exe	102
PID 4164 wrote to memory of 4940	4164	csrss.exe	108
PID 4164 wrote to memory of 4940	4164	csrss.exe	108
PID 4164 wrote to memory of 4940	4164	csrss.exe	108
PID 4164 wrote to memory of 1628	4164	csrss.exe	110
PID 4164 wrote to memory of 1628	4164	csrss.exe	110
PID 4164 wrote to memory of 1628	4164	csrss.exe	110
PID 4164 wrote to memory of 3744	4164	csrss.exe	112
PID 4164 wrote to memory of 3744	4164	csrss.exe	112
PID 1048 wrote to memory of 2892	1048	windefender.exe	118
PID 1048 wrote to memory of 2892	1048	windefender.exe	118
PID 1048 wrote to memory of 2892	1048	windefender.exe	118
PID 2892 wrote to memory of 4580	2892	cmd.exe	119
PID 2892 wrote to memory of 4580	2892	cmd.exe	119
PID 2892 wrote to memory of 4580	2892	cmd.exe	119

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\90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
"C:\Users\Admin\AppData\Local\Temp\90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1276
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4184
- C:\Users\Admin\AppData\Local\Temp\90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.exe
  "C:\Users\Admin\AppData\Local\Temp\90798d6a4462dbc962dfc78fa46022a1571eb92cd806c31448d69c7042b5c26d.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:4400
- - 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:728
- - 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:1880
  - - 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:2868
- - 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:1616
- - 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:736
- - C:\Windows\rss\csrss.exe
    C:\Windows\rss\csrss.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Manipulates WinMonFS driver.
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4164
  - - 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:4900
  - - 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:1988
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:4584
  - - 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:4940
  - - 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:1628
  - - 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:3744
  - - 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:3128
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:1048
    - - C:\Windows\SysWOW64\cmd.exe
        
        cmd.exe /C sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2892
      - C:\Windows\SysWOW64\sc.exe
        
        sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
        6⤵
        Launches sc.exe
        Suspicious use of AdjustPrivilegeToken
        
        PID:4580
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4400 -s 768
    3⤵
    - Program crash
    PID:400
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4400 -s 816
    3⤵
    - Program crash
    PID:4748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1276 -s 696
  2⤵
  - Program crash
  PID:2164
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1276 -s 924
  2⤵
  - Program crash
  PID:4248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1276 -ip 1276
1⤵
PID:3276

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1276 -ip 1276
1⤵
PID:748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4400 -ip 4400
1⤵
PID:2648

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4400 -ip 4400
1⤵
PID:4744

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3804

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_jzjszgnk.dwc.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jzjszgnk.dwc.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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