glupteba | cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb

Analysis

max time kernel
149s
max time network
127s
platform
windows11-21h2_x64
resource
win11-20240214-en
resource tags

arch:x64arch:x86image:win11-20240214-enlocale:en-usos:windows11-21h2-x64system
submitted
28/03/2024, 14:25

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Size 4.1MB
Sample240328-rrfl3agd4y
SHA256 cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb
MD5 341b98014272b07ef8b9eeaf696f1d23
SHA1 c185d72dd9e4aab8a1087443eaf90949ceb75831
SHA512 08c4ccfe3f21ef9a5e907abbcf755b3d8f46cf3ef72b0d886c4957ca7d56b3669256ab7170000525c45a5d9043b46f39b4c6c4a72c7adecb7ca770b2bd7a61fd
SSDEEP 98304:3iGq3KIeR6cCqKvuM4K2x9+Buk8CSmwN6LwJf1h9DYvlY:o0DS8x9+wVN60V1hdJ
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 19 IoCs

resource	yara_rule
behavioral2/memory/4916-2-0x0000000003210000-0x0000000003AFB000-memory.dmp	family_glupteba
behavioral2/memory/4916-3-0x0000000000400000-0x0000000000ECD000-memory.dmp	family_glupteba
behavioral2/memory/2348-53-0x0000000000400000-0x0000000000ECD000-memory.dmp	family_glupteba
behavioral2/memory/4916-86-0x0000000000400000-0x0000000000ECD000-memory.dmp	family_glupteba
behavioral2/memory/2348-114-0x0000000000400000-0x0000000000ECD000-memory.dmp	family_glupteba
behavioral2/memory/2348-147-0x0000000000400000-0x0000000000ECD000-memory.dmp	family_glupteba
behavioral2/memory/4884-235-0x0000000000400000-0x0000000000ECD000-memory.dmp	family_glupteba
behavioral2/memory/4884-246-0x0000000000400000-0x0000000000ECD000-memory.dmp	family_glupteba
behavioral2/memory/4884-250-0x0000000000400000-0x0000000000ECD000-memory.dmp	family_glupteba
behavioral2/memory/4884-254-0x0000000000400000-0x0000000000ECD000-memory.dmp	family_glupteba
behavioral2/memory/4884-258-0x0000000000400000-0x0000000000ECD000-memory.dmp	family_glupteba
behavioral2/memory/4884-262-0x0000000000400000-0x0000000000ECD000-memory.dmp	family_glupteba
behavioral2/memory/4884-266-0x0000000000400000-0x0000000000ECD000-memory.dmp	family_glupteba
behavioral2/memory/4884-270-0x0000000000400000-0x0000000000ECD000-memory.dmp	family_glupteba
behavioral2/memory/4884-274-0x0000000000400000-0x0000000000ECD000-memory.dmp	family_glupteba
behavioral2/memory/4884-278-0x0000000000400000-0x0000000000ECD000-memory.dmp	family_glupteba
behavioral2/memory/4884-282-0x0000000000400000-0x0000000000ECD000-memory.dmp	family_glupteba
behavioral2/memory/4884-285-0x0000000000400000-0x0000000000ECD000-memory.dmp	family_glupteba
behavioral2/memory/4884-290-0x0000000000400000-0x0000000000ECD000-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
4920	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
4884	csrss.exe
3080	injector.exe
4336	windefender.exe
4912	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002a785-239.dat	upx
behavioral2/memory/4336-244-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4912-248-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4912-256-0x0000000000400000-0x00000000008DF000-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-1-5-21-2567984660-2719943099-2683635618-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	csrss.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2567984660-2719943099-2683635618-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.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	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
File created	C:\Windows\rss\csrss.exe	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.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
2144	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
624	schtasks.exe
896	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.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\22\52C64B7E\@tzres.dll,-662 = "Cen. Australia Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-292 = "Central European Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-2792 = "Novosibirsk Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-2062 = "North Korea Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1932 = "Russia TZ 11 Standard Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.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\22\52C64B7E\@tzres.dll,-2002 = "Cabo Verde Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-171 = "Central Daylight Time (Mexico)"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-1892 = "Russia TZ 3 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2891 = "Sudan Daylight Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-2531 = "Chatham Islands Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-1471 = "Magadan Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1821 = "Russia TZ 1 Daylight Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-1872 = "Russia TZ 7 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-931 = "Coordinated Universal Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.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\22\52C64B7E\@tzres.dll,-511 = "Central Asia Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-1472 = "Magadan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-1912 = "Russia TZ 10 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1042 = "Ulaanbaatar Standard Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-1831 = "Russia TZ 2 Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-2892 = "Sudan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-831 = "SA Eastern Daylight Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1911 = "Russia TZ 10 Daylight Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time"	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2272	powershell.exe
2272	powershell.exe
4916	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
4916	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
2504	powershell.exe
2504	powershell.exe
2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
4304	powershell.exe
4304	powershell.exe
3716	powershell.exe
3716	powershell.exe
1500	powershell.exe
1500	powershell.exe
3244	powershell.exe
3244	powershell.exe
4012	powershell.exe
4012	powershell.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
4884	csrss.exe
4884	csrss.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
4884	csrss.exe
4884	csrss.exe
3080	injector.exe
3080	injector.exe
4884	csrss.exe
4884	csrss.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe
3080	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2272	powershell.exe
Token: SeDebugPrivilege	4916	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Token: SeImpersonatePrivilege	4916	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
Token: SeDebugPrivilege	2504	powershell.exe
Token: SeDebugPrivilege	4304	powershell.exe
Token: SeDebugPrivilege	3716	powershell.exe
Token: SeDebugPrivilege	1500	powershell.exe
Token: SeDebugPrivilege	3244	powershell.exe
Token: SeDebugPrivilege	4012	powershell.exe
Token: SeSystemEnvironmentPrivilege	4884	csrss.exe
Token: SeSecurityPrivilege	2144	sc.exe
Token: SeSecurityPrivilege	2144	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 4916 wrote to memory of 2272	4916	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe	77
PID 4916 wrote to memory of 2272	4916	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe	77
PID 4916 wrote to memory of 2272	4916	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe	77
PID 2348 wrote to memory of 2504	2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe	82
PID 2348 wrote to memory of 2504	2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe	82
PID 2348 wrote to memory of 2504	2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe	82
PID 2348 wrote to memory of 1484	2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe	84
PID 2348 wrote to memory of 1484	2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe	84
PID 1484 wrote to memory of 4920	1484	cmd.exe	86
PID 1484 wrote to memory of 4920	1484	cmd.exe	86
PID 2348 wrote to memory of 4304	2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe	87
PID 2348 wrote to memory of 4304	2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe	87
PID 2348 wrote to memory of 4304	2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe	87
PID 2348 wrote to memory of 3716	2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe	89
PID 2348 wrote to memory of 3716	2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe	89
PID 2348 wrote to memory of 3716	2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe	89
PID 2348 wrote to memory of 4884	2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe	91
PID 2348 wrote to memory of 4884	2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe	91
PID 2348 wrote to memory of 4884	2348	cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe	91
PID 4884 wrote to memory of 1500	4884	csrss.exe	92
PID 4884 wrote to memory of 1500	4884	csrss.exe	92
PID 4884 wrote to memory of 1500	4884	csrss.exe	92
PID 4884 wrote to memory of 3244	4884	csrss.exe	98
PID 4884 wrote to memory of 3244	4884	csrss.exe	98
PID 4884 wrote to memory of 3244	4884	csrss.exe	98
PID 4884 wrote to memory of 4012	4884	csrss.exe	100
PID 4884 wrote to memory of 4012	4884	csrss.exe	100
PID 4884 wrote to memory of 4012	4884	csrss.exe	100
PID 4884 wrote to memory of 3080	4884	csrss.exe	102
PID 4884 wrote to memory of 3080	4884	csrss.exe	102
PID 4336 wrote to memory of 3032	4336	windefender.exe	108
PID 4336 wrote to memory of 3032	4336	windefender.exe	108
PID 4336 wrote to memory of 3032	4336	windefender.exe	108
PID 3032 wrote to memory of 2144	3032	cmd.exe	109
PID 3032 wrote to memory of 2144	3032	cmd.exe	109
PID 3032 wrote to memory of 2144	3032	cmd.exe	109

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\cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
"C:\Users\Admin\AppData\Local\Temp\cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4916
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2272
- C:\Users\Admin\AppData\Local\Temp\cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.exe
  "C:\Users\Admin\AppData\Local\Temp\cd5b18ffe74c751de1645261623dafc9c270c90e60c284d243cf348d6bdc2feb.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:2348
- - 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:2504
- - 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:1484
  - - 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:4920
- - 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:4304
- - 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:3716
- - 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:4884
  - - 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:1500
  - - 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:624
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:3908
  - - 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:3244
  - - 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:4012
  - - 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:3080
  - - 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:896
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:4336
    - - 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:3032
      - 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:2144

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4912

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

Loading Replay Monitor...

Downloads

__PSScriptPolicyTest_ar5sosis.ai2.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ar5sosis.ai2.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

Submit Download

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

Submit Download

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

Submit Download