glupteba | f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871

Analysis

max time kernel
149s
max time network
155s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
15/05/2024, 18:13

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General

Target
f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Size 4.1MB
Sample240515-wt77bada3t
SHA256 f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871
MD5 a646cf4fdf1a86d57800cc180e8ba799
SHA1 fb0df008ae51a38af0a7d7d16f9b49f1ea6d5ffa
SHA512 21edb7123a8618546484bd6d91041ae5ef8f814dd25217b1cbadb2aa10461c8780b7c57a2b99b3ab15d420643f3c454921c395cc86e5a185b6dcbaf333477719
SSDEEP 98304:QoKALZtLSnhBaG13jSGzI9y04m/Xf7c/d7YDSGfJg5NEka2Q+gz:QC1IraEjIw04m/Xfo4a5yka2Q+gz
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion execution loader persistence rootkit upx

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/2836-2-0x0000000004E10000-0x00000000056FB000-memory.dmp	family_glupteba
behavioral2/memory/2836-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/2836-24-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/2836-54-0x0000000004E10000-0x00000000056FB000-memory.dmp	family_glupteba
behavioral2/memory/2836-55-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/2836-56-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/2944-66-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/2944-124-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/2944-130-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1528-179-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1528-206-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1528-217-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1528-220-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1528-223-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1528-226-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1528-229-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1528-232-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1528-235-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1528-238-0x0000000000400000-0x0000000002B0B000-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
2984	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
1528	csrss.exe
4084	injector.exe
4936	windefender.exe
4200	windefender.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002a9c1-209.dat	upx
behavioral2/memory/4936-211-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4200-214-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4936-216-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4200-219-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4200-225-0x0000000000400000-0x00000000008DF000-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-1-5-21-2457560273-69882387-977367775-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2457560273-69882387-977367775-1000\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	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
File created	C:\Windows\rss\csrss.exe	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.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
1576	sc.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2236	powershell.exe
4508	powershell.exe
1660	powershell.exe
1404	powershell.exe
2864	powershell.exe
2280	powershell.exe
1544	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
3316	schtasks.exe
1672	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1932 = "Russia TZ 11 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2941 = "Sao Tome Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-691 = "Tasmania Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2162 = "Altai Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\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\@tzres.dll,-571 = "China Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-431 = "Iran Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2322 = "Sakhalin Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-632 = "Tokyo Standard Time"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.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\@tzres.dll,-872 = "Pakistan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2842 = "Saratov Standard Time"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2492 = "Aus Central W. Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-561 = "SE Asia Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-362 = "GTB Standard Time"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1832 = "Russia TZ 2 Standard Time"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2161 = "Altai Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-262 = "GMT Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1661 = "Bahia Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2341 = "Haiti Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1802 = "Line Islands Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2591 = "Tocantins Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-212 = "Pacific Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	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\2a\52C64B7E\@tzres.dll,-104 = "Central Brazilian Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-434 = "Georgian Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-372 = "Jerusalem Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\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,-2391 = "Aleutian Daylight Time"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-451 = "Caucasus Daylight Time"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1721 = "Libya Daylight Time"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time"	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.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\@tzres.dll,-448 = "Azerbaijan Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-111 = "Eastern Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-602 = "Taipei Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	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\@tzres.dll,-2392 = "Aleutian Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-452 = "Caucasus Standard Time"	windefender.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1660	powershell.exe
1660	powershell.exe
2836	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
2836	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
1404	powershell.exe
1404	powershell.exe
2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
2864	powershell.exe
2864	powershell.exe
2280	powershell.exe
2280	powershell.exe
1544	powershell.exe
1544	powershell.exe
2236	powershell.exe
2236	powershell.exe
4508	powershell.exe
4508	powershell.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
1528	csrss.exe
1528	csrss.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
1528	csrss.exe
1528	csrss.exe
4084	injector.exe
4084	injector.exe
1528	csrss.exe
1528	csrss.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe
4084	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	1660	powershell.exe
Token: SeDebugPrivilege	2836	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Token: SeImpersonatePrivilege	2836	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
Token: SeDebugPrivilege	1404	powershell.exe
Token: SeDebugPrivilege	2864	powershell.exe
Token: SeDebugPrivilege	2280	powershell.exe
Token: SeDebugPrivilege	1544	powershell.exe
Token: SeDebugPrivilege	2236	powershell.exe
Token: SeDebugPrivilege	4508	powershell.exe
Token: SeSystemEnvironmentPrivilege	1528	csrss.exe
Token: SeSecurityPrivilege	1576	sc.exe
Token: SeSecurityPrivilege	1576	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2836 wrote to memory of 1660	2836	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe	82
PID 2836 wrote to memory of 1660	2836	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe	82
PID 2836 wrote to memory of 1660	2836	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe	82
PID 2944 wrote to memory of 1404	2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe	87
PID 2944 wrote to memory of 1404	2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe	87
PID 2944 wrote to memory of 1404	2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe	87
PID 2944 wrote to memory of 5104	2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe	89
PID 2944 wrote to memory of 5104	2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe	89
PID 5104 wrote to memory of 2984	5104	cmd.exe	91
PID 5104 wrote to memory of 2984	5104	cmd.exe	91
PID 2944 wrote to memory of 2864	2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe	92
PID 2944 wrote to memory of 2864	2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe	92
PID 2944 wrote to memory of 2864	2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe	92
PID 2944 wrote to memory of 2280	2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe	94
PID 2944 wrote to memory of 2280	2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe	94
PID 2944 wrote to memory of 2280	2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe	94
PID 2944 wrote to memory of 1528	2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe	96
PID 2944 wrote to memory of 1528	2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe	96
PID 2944 wrote to memory of 1528	2944	f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe	96
PID 1528 wrote to memory of 1544	1528	csrss.exe	97
PID 1528 wrote to memory of 1544	1528	csrss.exe	97
PID 1528 wrote to memory of 1544	1528	csrss.exe	97
PID 1528 wrote to memory of 2236	1528	csrss.exe	102
PID 1528 wrote to memory of 2236	1528	csrss.exe	102
PID 1528 wrote to memory of 2236	1528	csrss.exe	102
PID 1528 wrote to memory of 4508	1528	csrss.exe	105
PID 1528 wrote to memory of 4508	1528	csrss.exe	105
PID 1528 wrote to memory of 4508	1528	csrss.exe	105
PID 1528 wrote to memory of 4084	1528	csrss.exe	107
PID 1528 wrote to memory of 4084	1528	csrss.exe	107
PID 4936 wrote to memory of 4536	4936	windefender.exe	113
PID 4936 wrote to memory of 4536	4936	windefender.exe	113
PID 4936 wrote to memory of 4536	4936	windefender.exe	113
PID 4536 wrote to memory of 1576	4536	cmd.exe	114
PID 4536 wrote to memory of 1576	4536	cmd.exe	114
PID 4536 wrote to memory of 1576	4536	cmd.exe	114

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\f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
"C:\Users\Admin\AppData\Local\Temp\f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2836
- 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:1660
- C:\Users\Admin\AppData\Local\Temp\f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.exe
  "C:\Users\Admin\AppData\Local\Temp\f7383cb3252a6d7671d4523da3359b99213765d18245e511e60ebb5ba853f871.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:2944
- - 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:1404
- - 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:5104
  - - 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:2984
- - 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:2864
- - 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:2280
- - 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:1528
  - - 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:1544
  - - 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:3316
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:2136
  - - 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:2236
  - - 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:4508
  - - 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:4084
  - - 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:1672
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:4936
    - - 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:4536
      - 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:1576

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4200

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_d2z4xqkr.m2g.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_d2z4xqkr.m2g.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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injector.exe

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

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powershell.exe.log

Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Size 2KB
SHA256 9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
MD5 d0c46cad6c0778401e21910bd6b56b70
SHA1 7be418951ea96326aca445b8dfe449b2bfa0dca6
SHA512 057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949
MD5 SHA1 SHA512

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