glupteba | f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c

Analysis

max time kernel
150s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
20/05/2024, 04:46

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General

Target
f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
Size 4.1MB
Sample240520-fd4k7ach8w
SHA256 f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c
MD5 ff8b66a413ace55ad3d9f97f144b8ada
SHA1 046fde25db40e93d5ccd1111fc0bccb949a917aa
SHA512 470353088f9a21a8774908ffe3e6537a6ab889567edf5603711ca24838235169d442232abe46c6ac94162b8845b72fe50b9a0bec523bd684965512da799adc92
SSDEEP 98304:HquwTfmIkbquibhaubey8xw4weLmAcL8k4+6XNB3Rebmbqb0V:YLmIkbquibpii2yAk4+2fEKmbS
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion execution loader persistence rootkit upx

Malware Config

Signatures

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

Glupteba payload 17 IoCs

resource	yara_rule
behavioral2/memory/2948-2-0x0000000002E70000-0x000000000375B000-memory.dmp	family_glupteba
behavioral2/memory/2948-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/2948-73-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/2948-78-0x0000000002E70000-0x000000000375B000-memory.dmp	family_glupteba
behavioral2/memory/396-125-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/560-202-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/560-214-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/560-217-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/560-221-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/560-225-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/560-228-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/560-232-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/560-237-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/560-241-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/560-244-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/560-250-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/560-253-0x0000000000400000-0x0000000000D1C000-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
2148	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
560	csrss.exe
1340	injector.exe
468	windefender.exe
2620	windefender.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000500000002a9b1-207.dat	upx
behavioral2/memory/468-208-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/468-212-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2620-218-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2620-226-0x0000000000400000-0x00000000008DF000-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-1-5-21-3001105534-2705918504-2956618779-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3001105534-2705918504-2956618779-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	csrss.exe

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

Query Registry
T1012

Manipulates WinMonFS driver. 1 IoCs

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

rootkit evasion

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

Drops file in System32 directory 7 IoCs

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

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	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\rss\csrss.exe	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
File created	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\rss	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe

Launches sc.exe 1 IoCs

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

pid	Process
1424	sc.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1276	powershell.exe
852	powershell.exe
3140	powershell.exe
764	powershell.exe
4844	powershell.exe
4716	powershell.exe
888	powershell.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
5036	schtasks.exe
3544	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-962 = "Paraguay Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time"	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2432 = "Cuba Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-104 = "Central Brazilian Daylight Time"	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time"	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time"	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time"	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-631 = "Tokyo Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2491 = "Aus Central W. Daylight Time"	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-52 = "Greenland Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time"	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.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\2a\52C64B7E\@tzres.dll,-771 = "Montevideo Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2452 = "Saint Pierre Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2451 = "Saint Pierre Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-292 = "Central European Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2511 = "Lord Howe Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time"	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1972 = "Belarus Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1501 = "Turkey Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-982 = "Kamchatka Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time"	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	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\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)"	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "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\2a\52C64B7E\@tzres.dll,-2161 = "Altai Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-672 = "AUS Eastern Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	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\2a\52C64B7E\@tzres.dll,-841 = "Argentina Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-449 = "Azerbaijan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-382 = "South Africa Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1802 = "Line Islands Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-772 = "Montevideo Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-752 = "Tonga Standard Time"	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	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\2a\52C64B7E\@tzres.dll,-2001 = "Cabo Verde Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-372 = "Jerusalem Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\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\2a\52C64B7E\@tzres.dll,-351 = "FLE Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2182 = "Astrakhan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-362 = "GTB Standard Time"	windefender.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
764	powershell.exe
764	powershell.exe
2948	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
2948	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
4844	powershell.exe
4844	powershell.exe
396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
4716	powershell.exe
4716	powershell.exe
888	powershell.exe
888	powershell.exe
1276	powershell.exe
1276	powershell.exe
852	powershell.exe
852	powershell.exe
3140	powershell.exe
3140	powershell.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
560	csrss.exe
560	csrss.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
560	csrss.exe
560	csrss.exe
1340	injector.exe
1340	injector.exe
560	csrss.exe
560	csrss.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe
1340	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	764	powershell.exe
Token: SeDebugPrivilege	2948	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
Token: SeImpersonatePrivilege	2948	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
Token: SeDebugPrivilege	4844	powershell.exe
Token: SeDebugPrivilege	4716	powershell.exe
Token: SeDebugPrivilege	888	powershell.exe
Token: SeDebugPrivilege	1276	powershell.exe
Token: SeDebugPrivilege	852	powershell.exe
Token: SeDebugPrivilege	3140	powershell.exe
Token: SeSystemEnvironmentPrivilege	560	csrss.exe
Token: SeSecurityPrivilege	1424	sc.exe
Token: SeSecurityPrivilege	1424	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2948 wrote to memory of 764	2948	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe	81
PID 2948 wrote to memory of 764	2948	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe	81
PID 2948 wrote to memory of 764	2948	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe	81
PID 396 wrote to memory of 4844	396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe	86
PID 396 wrote to memory of 4844	396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe	86
PID 396 wrote to memory of 4844	396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe	86
PID 396 wrote to memory of 4796	396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe	88
PID 396 wrote to memory of 4796	396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe	88
PID 4796 wrote to memory of 2148	4796	cmd.exe	90
PID 4796 wrote to memory of 2148	4796	cmd.exe	90
PID 396 wrote to memory of 4716	396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe	91
PID 396 wrote to memory of 4716	396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe	91
PID 396 wrote to memory of 4716	396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe	91
PID 396 wrote to memory of 888	396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe	93
PID 396 wrote to memory of 888	396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe	93
PID 396 wrote to memory of 888	396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe	93
PID 396 wrote to memory of 560	396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe	95
PID 396 wrote to memory of 560	396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe	95
PID 396 wrote to memory of 560	396	f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe	95
PID 560 wrote to memory of 1276	560	csrss.exe	96
PID 560 wrote to memory of 1276	560	csrss.exe	96
PID 560 wrote to memory of 1276	560	csrss.exe	96
PID 560 wrote to memory of 852	560	csrss.exe	102
PID 560 wrote to memory of 852	560	csrss.exe	102
PID 560 wrote to memory of 852	560	csrss.exe	102
PID 560 wrote to memory of 3140	560	csrss.exe	104
PID 560 wrote to memory of 3140	560	csrss.exe	104
PID 560 wrote to memory of 3140	560	csrss.exe	104
PID 560 wrote to memory of 1340	560	csrss.exe	106
PID 560 wrote to memory of 1340	560	csrss.exe	106
PID 468 wrote to memory of 1624	468	windefender.exe	118
PID 468 wrote to memory of 1624	468	windefender.exe	118
PID 468 wrote to memory of 1624	468	windefender.exe	118
PID 1624 wrote to memory of 1424	1624	cmd.exe	119
PID 1624 wrote to memory of 1424	1624	cmd.exe	119
PID 1624 wrote to memory of 1424	1624	cmd.exe	119

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
"C:\Users\Admin\AppData\Local\Temp\f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2948
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:764
- C:\Users\Admin\AppData\Local\Temp\f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.exe
  "C:\Users\Admin\AppData\Local\Temp\f1403cd7eb017057eef75f5541d9061b74d26bc0750d42d6a1f2c6af7198f09c.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:396
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Command and Scripting Interpreter: PowerShell
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4844
- - 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:4796
  - - 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:2148
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Command and Scripting Interpreter: PowerShell
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4716
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Command and Scripting Interpreter: PowerShell
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:888
- - 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:560
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Command and Scripting Interpreter: PowerShell
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1276
  - - 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:5036
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:3112
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Command and Scripting Interpreter: PowerShell
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:852
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Command and Scripting Interpreter: PowerShell
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3140
  - - 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:1340
  - - 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:3544
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:468
    - - 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:1624
      - 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:1424

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

__PSScriptPolicyTest_mkl5cavx.h2i.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mkl5cavx.h2i.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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injector.exe

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

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powershell.exe.log

Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Size 2KB
SHA256 e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9
MD5 ac4917a885cf6050b1a483e4bc4d2ea5
SHA1 b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f
SHA512 092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d
MD5 SHA1 SHA512

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