glupteba | 878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216

Analysis

max time kernel
149s
max time network
128s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
19/04/2024, 13:32

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General

Target
878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Size 4.2MB
Sample240419-qtgfpsef2t
SHA256 878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216
MD5 206317b715858ed12d7fdada2443ccab
SHA1 46642b7e23d7c4b6e104176288a4659966cc3d8a
SHA512 7630a426812879787241cd3af571576f481c169760898ce82c55b44d7bebb74838f203950c2152cd22c38a4578ed769504d07c619c7cdd3a48fc0f9ada30e323
SSDEEP 98304:GnK8LmfPd/8stvQd5ytt2zai81uhNveK9SmSQsZGchR1m1:l8qfPd/x65yttA81u3LZOh/U
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 20 IoCs

resource	yara_rule
behavioral2/memory/1588-2-0x0000000005380000-0x0000000005C6B000-memory.dmp	family_glupteba
behavioral2/memory/1588-3-0x0000000000400000-0x000000000311B000-memory.dmp	family_glupteba
behavioral2/memory/1588-49-0x0000000000400000-0x000000000311B000-memory.dmp	family_glupteba
behavioral2/memory/1252-52-0x0000000005260000-0x0000000005B4B000-memory.dmp	family_glupteba
behavioral2/memory/1252-53-0x0000000000400000-0x000000000311B000-memory.dmp	family_glupteba
behavioral2/memory/1252-127-0x0000000000400000-0x000000000311B000-memory.dmp	family_glupteba
behavioral2/memory/1252-180-0x0000000000400000-0x000000000311B000-memory.dmp	family_glupteba
behavioral2/memory/1988-236-0x0000000000400000-0x000000000311B000-memory.dmp	family_glupteba
behavioral2/memory/1988-247-0x0000000000400000-0x000000000311B000-memory.dmp	family_glupteba
behavioral2/memory/1988-257-0x0000000000400000-0x000000000311B000-memory.dmp	family_glupteba
behavioral2/memory/1988-260-0x0000000000400000-0x000000000311B000-memory.dmp	family_glupteba
behavioral2/memory/1988-263-0x0000000000400000-0x000000000311B000-memory.dmp	family_glupteba
behavioral2/memory/1988-266-0x0000000000400000-0x000000000311B000-memory.dmp	family_glupteba
behavioral2/memory/1988-269-0x0000000000400000-0x000000000311B000-memory.dmp	family_glupteba
behavioral2/memory/1988-272-0x0000000000400000-0x000000000311B000-memory.dmp	family_glupteba
behavioral2/memory/1988-275-0x0000000000400000-0x000000000311B000-memory.dmp	family_glupteba
behavioral2/memory/1988-279-0x0000000000400000-0x000000000311B000-memory.dmp	family_glupteba
behavioral2/memory/1988-282-0x0000000000400000-0x000000000311B000-memory.dmp	family_glupteba
behavioral2/memory/1988-284-0x0000000000400000-0x000000000311B000-memory.dmp	family_glupteba
behavioral2/memory/1988-287-0x0000000000400000-0x000000000311B000-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
3076	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
1988	csrss.exe
2176	injector.exe
3432	windefender.exe
2836	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002a9db-250.dat	upx
behavioral2/memory/3432-256-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2836-259-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2836-265-0x0000000000400000-0x00000000008DF000-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-1-5-21-3777591257-2471171023-3629228286-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3777591257-2471171023-3629228286-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	csrss.exe

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

Query Registry
T1012

Manipulates WinMonFS driver. 1 IoCs

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

rootkit evasion

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

Drops file in System32 directory 7 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\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
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	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
File created	C:\Windows\rss\csrss.exe	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.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
4656	sc.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
2612	schtasks.exe
2128	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,-2392 = "Aleutian Standard Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-342 = "Egypt Standard Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1862 = "Russia TZ 6 Standard Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.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\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,-402 = "Arabic Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1871 = "Russia TZ 7 Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-602 = "Taipei Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-3052 = "Qyzylorda Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-3051 = "Qyzylorda Daylight 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"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-71 = "Newfoundland Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1822 = "Russia TZ 1 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2411 = "Marquesas Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-772 = "Montevideo Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2771 = "Omsk Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-831 = "SA Eastern Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1042 = "Ulaanbaatar Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-362 = "GTB Standard Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-841 = "Argentina Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-202 = "US Mountain Standard Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-662 = "Cen. Australia Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-351 = "FLE Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1831 = "Russia TZ 2 Daylight Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-981 = "Kamchatka Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2142 = "Transbaikal Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.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\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-741 = "New Zealand Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-691 = "Tasmania Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-104 = "Central Brazilian Daylight Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-831 = "SA Eastern Daylight Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.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,-1832 = "Russia TZ 2 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-42 = "E. South America Standard Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-562 = "SE Asia Standard Time"	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2544	powershell.exe
2544	powershell.exe
1588	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
1588	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
3640	powershell.exe
3640	powershell.exe
1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
2236	powershell.exe
2236	powershell.exe
2580	powershell.exe
2580	powershell.exe
3588	powershell.exe
3588	powershell.exe
3496	powershell.exe
3496	powershell.exe
1944	powershell.exe
1944	powershell.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
1988	csrss.exe
1988	csrss.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
1988	csrss.exe
1988	csrss.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
1988	csrss.exe
1988	csrss.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe
2176	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2544	powershell.exe
Token: SeDebugPrivilege	1588	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Token: SeImpersonatePrivilege	1588	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
Token: SeDebugPrivilege	3640	powershell.exe
Token: SeDebugPrivilege	2236	powershell.exe
Token: SeDebugPrivilege	2580	powershell.exe
Token: SeDebugPrivilege	3588	powershell.exe
Token: SeDebugPrivilege	3496	powershell.exe
Token: SeDebugPrivilege	1944	powershell.exe
Token: SeSystemEnvironmentPrivilege	1988	csrss.exe
Token: SeSecurityPrivilege	4656	sc.exe
Token: SeSecurityPrivilege	4656	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1588 wrote to memory of 2544	1588	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe	82
PID 1588 wrote to memory of 2544	1588	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe	82
PID 1588 wrote to memory of 2544	1588	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe	82
PID 1252 wrote to memory of 3640	1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe	88
PID 1252 wrote to memory of 3640	1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe	88
PID 1252 wrote to memory of 3640	1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe	88
PID 1252 wrote to memory of 4724	1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe	90
PID 1252 wrote to memory of 4724	1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe	90
PID 4724 wrote to memory of 3076	4724	cmd.exe	92
PID 4724 wrote to memory of 3076	4724	cmd.exe	92
PID 1252 wrote to memory of 2236	1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe	93
PID 1252 wrote to memory of 2236	1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe	93
PID 1252 wrote to memory of 2236	1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe	93
PID 1252 wrote to memory of 2580	1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe	95
PID 1252 wrote to memory of 2580	1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe	95
PID 1252 wrote to memory of 2580	1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe	95
PID 1252 wrote to memory of 1988	1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe	97
PID 1252 wrote to memory of 1988	1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe	97
PID 1252 wrote to memory of 1988	1252	878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe	97
PID 1988 wrote to memory of 3588	1988	csrss.exe	98
PID 1988 wrote to memory of 3588	1988	csrss.exe	98
PID 1988 wrote to memory of 3588	1988	csrss.exe	98
PID 1988 wrote to memory of 3496	1988	csrss.exe	103
PID 1988 wrote to memory of 3496	1988	csrss.exe	103
PID 1988 wrote to memory of 3496	1988	csrss.exe	103
PID 1988 wrote to memory of 1944	1988	csrss.exe	106
PID 1988 wrote to memory of 1944	1988	csrss.exe	106
PID 1988 wrote to memory of 1944	1988	csrss.exe	106
PID 1988 wrote to memory of 2176	1988	csrss.exe	108
PID 1988 wrote to memory of 2176	1988	csrss.exe	108
PID 3432 wrote to memory of 4576	3432	windefender.exe	114
PID 3432 wrote to memory of 4576	3432	windefender.exe	114
PID 3432 wrote to memory of 4576	3432	windefender.exe	114
PID 4576 wrote to memory of 4656	4576	cmd.exe	115
PID 4576 wrote to memory of 4656	4576	cmd.exe	115
PID 4576 wrote to memory of 4656	4576	cmd.exe	115

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\878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
"C:\Users\Admin\AppData\Local\Temp\878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1588
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2544
- C:\Users\Admin\AppData\Local\Temp\878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.exe
  "C:\Users\Admin\AppData\Local\Temp\878f8c5d787f545ed4898b2d89c2984be45dbd702997f74b601dbabdbc897216.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:1252
- - 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:3640
- - 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:4724
  - - 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:3076
- - 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:2236
- - 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:2580
- - 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:1988
  - - 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:3588
  - - 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:2612
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:4324
  - - 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:3496
  - - 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:1944
  - - 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:2176
  - - 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:2128
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:3432
    - - 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:4576
      - 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:4656

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2836

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_rcf1jygx.3u1.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rcf1jygx.3u1.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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