glupteba | 9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219

Analysis

max time kernel
149s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
20/04/2024, 15:06

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Size 4.2MB
Sample240420-sgw2qsbb86
SHA256 9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219
MD5 0896e07831d0a8e21202a1ea3f005adf
SHA1 5b701dffaae64691915146f11267de6d33c4f312
SHA512 8dbceaeb5b7da96a6e0fbe9a3f8ff6ea512cc6a72ee50cf797b7c6b93684fd643c7971e3d9349c145f26c8690314fe4f79eea117772d3e916ed262162685a4f8
SSDEEP 49152:JKOdvREmi8iTwPpeYBnAu4QJI7RESGN2UNQnUyHdr+bW0USBgrsqhT/DWSjgq2Sl:AOLEfT6eYBhfhWV+b2vbWNq2SbuhRk
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/1900-2-0x00000000040C0000-0x00000000049AB000-memory.dmp	family_glupteba
behavioral2/memory/1900-3-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral2/memory/2096-52-0x0000000003F20000-0x000000000480B000-memory.dmp	family_glupteba
behavioral2/memory/2096-53-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral2/memory/1900-76-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral2/memory/2096-129-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral2/memory/2096-189-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral2/memory/4680-240-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral2/memory/4680-251-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral2/memory/4680-254-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral2/memory/4680-258-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral2/memory/4680-262-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral2/memory/4680-266-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral2/memory/4680-270-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral2/memory/4680-274-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral2/memory/4680-279-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral2/memory/4680-282-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral2/memory/4680-286-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral2/memory/4680-290-0x0000000000400000-0x0000000001DF9000-memory.dmp	family_glupteba
behavioral2/memory/4680-294-0x0000000000400000-0x0000000001DF9000-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
828	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
4680	csrss.exe
2016	injector.exe
1444	windefender.exe
1584	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002a999-244.dat	upx
behavioral2/memory/1444-250-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/1584-255-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/1584-263-0x0000000000400000-0x00000000008DF000-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-1-5-21-3263309122-2820180308-3568046652-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3263309122-2820180308-3568046652-1000\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	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\rss	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
File created	C:\Windows\rss\csrss.exe	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
File created	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
1156	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
2328	schtasks.exe
1012	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\@tzres.dll,-2321 = "Sakhalin Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-842 = "Argentina Standard Time"	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time"	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-542 = "Myanmar 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\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time"	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time"	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time"	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-622 = "Korea Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time"	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time"	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time"	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time"	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1892 = "Russia TZ 3 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time"	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1861 = "Russia TZ 6 Daylight Time"	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time"	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-202 = "US Mountain Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2891 = "Sudan Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-364 = "Middle East Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1972 = "Belarus Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-452 = "Caucasus Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1411 = "Syria Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-331 = "E. Europe Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1872 = "Russia TZ 7 Standard Time"	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time"	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	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,-961 = "Paraguay Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-371 = "Jerusalem Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-932 = "Coordinated Universal Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time"	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-831 = "SA Eastern Daylight Time"	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time"	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2980	powershell.exe
2980	powershell.exe
1900	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
1900	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
3448	powershell.exe
3448	powershell.exe
2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
3612	powershell.exe
3612	powershell.exe
4652	powershell.exe
4652	powershell.exe
3632	powershell.exe
3632	powershell.exe
3696	powershell.exe
3696	powershell.exe
1940	powershell.exe
1940	powershell.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
4680	csrss.exe
4680	csrss.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
4680	csrss.exe
4680	csrss.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
4680	csrss.exe
4680	csrss.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe
2016	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2980	powershell.exe
Token: SeDebugPrivilege	1900	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Token: SeImpersonatePrivilege	1900	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
Token: SeDebugPrivilege	3448	powershell.exe
Token: SeDebugPrivilege	3612	powershell.exe
Token: SeDebugPrivilege	4652	powershell.exe
Token: SeDebugPrivilege	3632	powershell.exe
Token: SeDebugPrivilege	3696	powershell.exe
Token: SeDebugPrivilege	1940	powershell.exe
Token: SeSystemEnvironmentPrivilege	4680	csrss.exe
Token: SeSecurityPrivilege	1156	sc.exe
Token: SeSecurityPrivilege	1156	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1900 wrote to memory of 2980	1900	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe	79
PID 1900 wrote to memory of 2980	1900	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe	79
PID 1900 wrote to memory of 2980	1900	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe	79
PID 2096 wrote to memory of 3448	2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe	84
PID 2096 wrote to memory of 3448	2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe	84
PID 2096 wrote to memory of 3448	2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe	84
PID 2096 wrote to memory of 2696	2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe	86
PID 2096 wrote to memory of 2696	2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe	86
PID 2696 wrote to memory of 828	2696	cmd.exe	88
PID 2696 wrote to memory of 828	2696	cmd.exe	88
PID 2096 wrote to memory of 3612	2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe	89
PID 2096 wrote to memory of 3612	2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe	89
PID 2096 wrote to memory of 3612	2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe	89
PID 2096 wrote to memory of 4652	2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe	91
PID 2096 wrote to memory of 4652	2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe	91
PID 2096 wrote to memory of 4652	2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe	91
PID 2096 wrote to memory of 4680	2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe	93
PID 2096 wrote to memory of 4680	2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe	93
PID 2096 wrote to memory of 4680	2096	9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe	93
PID 4680 wrote to memory of 3632	4680	csrss.exe	94
PID 4680 wrote to memory of 3632	4680	csrss.exe	94
PID 4680 wrote to memory of 3632	4680	csrss.exe	94
PID 4680 wrote to memory of 3696	4680	csrss.exe	100
PID 4680 wrote to memory of 3696	4680	csrss.exe	100
PID 4680 wrote to memory of 3696	4680	csrss.exe	100
PID 4680 wrote to memory of 1940	4680	csrss.exe	102
PID 4680 wrote to memory of 1940	4680	csrss.exe	102
PID 4680 wrote to memory of 1940	4680	csrss.exe	102
PID 4680 wrote to memory of 2016	4680	csrss.exe	104
PID 4680 wrote to memory of 2016	4680	csrss.exe	104
PID 1444 wrote to memory of 4404	1444	windefender.exe	110
PID 1444 wrote to memory of 4404	1444	windefender.exe	110
PID 1444 wrote to memory of 4404	1444	windefender.exe	110
PID 4404 wrote to memory of 1156	4404	cmd.exe	111
PID 4404 wrote to memory of 1156	4404	cmd.exe	111
PID 4404 wrote to memory of 1156	4404	cmd.exe	111

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\9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
"C:\Users\Admin\AppData\Local\Temp\9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1900
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2980
- C:\Users\Admin\AppData\Local\Temp\9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.exe
  "C:\Users\Admin\AppData\Local\Temp\9af88cfdb1a10ef65262363d34d063007ad9355306701632fce58861ed419219.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:2096
- - 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:3448
- - 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:2696
  - - 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:828
- - 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:3612
- - 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:4652
- - 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:4680
  - - 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:3632
  - - 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:2328
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:5080
  - - 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:3696
  - - 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:1940
  - - 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:2016
  - - 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:1012
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:1444
    - - 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:4404
      - 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:1156

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1584

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_k3ftlnel.mjn.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_k3ftlnel.mjn.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