glupteba | afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c

Analysis

max time kernel
149s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
15/05/2024, 23:31

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General

Target
afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Size 4.1MB
Sample240515-3hybashg31
SHA256 afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c
MD5 f69757fce122491e1758c6b6455f201a
SHA1 799a0b597ab5b1f65268ff3ecfd5f221fc236853
SHA512 e6e52c1147ac6c81e97d414d9f4da3c2e688290f348ec610dad82bd68a1d87a688eb1191d6cc8de9360dd068813eb9c1ae3287df7d9da295148fef7264185190
SSDEEP 98304:UCrMvuyR1RyPQdAJHItu4QbOo8ZPCtSlOjuAz5n6hmlDmbI:U5vuu/yDHItfIOpPCSgB5tCM
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/336-2-0x0000000004C80000-0x000000000556B000-memory.dmp	family_glupteba
behavioral2/memory/336-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/336-52-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/336-63-0x0000000004C80000-0x000000000556B000-memory.dmp	family_glupteba
behavioral2/memory/336-127-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/928-126-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/804-208-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/804-216-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/804-221-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/804-225-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/804-228-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/804-232-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/804-237-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/804-241-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/804-245-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/804-248-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/804-252-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2472	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
804	csrss.exe
4576	injector.exe
2820	windefender.exe
1868	windefender.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002a9e3-207.dat	upx
behavioral2/memory/2820-209-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2820-213-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/1868-212-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/1868-218-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/1868-226-0x0000000000400000-0x00000000008DF000-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-1-5-21-1696768468-2170909707-4198977321-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000\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 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

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	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
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	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
File created	C:\Windows\rss\csrss.exe	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe

Launches sc.exe 1 IoCs

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

pid	Process
1524	sc.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3780	powershell.exe
684	powershell.exe
2380	powershell.exe
2176	powershell.exe
4936	powershell.exe
3316	powershell.exe
5100	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
1448	schtasks.exe
4300	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time"	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time"	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-3052 = "Qyzylorda Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-42 = "E. South America Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time"	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-81 = "Atlantic Daylight Time"	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time"	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	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\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2792 = "Novosibirsk Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-501 = "Nepal Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time"	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-242 = "Samoa Standard Time"	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-121 = "SA Pacific Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time"	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-651 = "AUS Central Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-212 = "Pacific Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time"	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-652 = "AUS Central Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-172 = "Central Standard Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-242 = "Samoa Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time"	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-561 = "SE Asia Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1862 = "Russia TZ 6 Standard Time"	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2062 = "North Korea Standard Time"	windefender.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\IntranetName = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2162 = "Altai Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-151 = "Central America Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-911 = "Mauritius Daylight Time"	windefender.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,-231 = "Hawaiian Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-72 = "Newfoundland Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2842 = "Saratov Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2392 = "Aleutian Standard Time"	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-842 = "Argentina Standard Time"	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2512 = "Lord Howe Standard Time"	windefender.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3780	powershell.exe
3780	powershell.exe
336	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
336	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
684	powershell.exe
684	powershell.exe
928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
2380	powershell.exe
2380	powershell.exe
2176	powershell.exe
2176	powershell.exe
4936	powershell.exe
4936	powershell.exe
3316	powershell.exe
3316	powershell.exe
5100	powershell.exe
5100	powershell.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
804	csrss.exe
804	csrss.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
804	csrss.exe
804	csrss.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
804	csrss.exe
804	csrss.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe
4576	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	3780	powershell.exe
Token: SeDebugPrivilege	336	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Token: SeImpersonatePrivilege	336	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
Token: SeDebugPrivilege	684	powershell.exe
Token: SeDebugPrivilege	2380	powershell.exe
Token: SeDebugPrivilege	2176	powershell.exe
Token: SeDebugPrivilege	4936	powershell.exe
Token: SeDebugPrivilege	3316	powershell.exe
Token: SeDebugPrivilege	5100	powershell.exe
Token: SeSystemEnvironmentPrivilege	804	csrss.exe
Token: SeSecurityPrivilege	1524	sc.exe
Token: SeSecurityPrivilege	1524	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 336 wrote to memory of 3780	336	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe	79
PID 336 wrote to memory of 3780	336	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe	79
PID 336 wrote to memory of 3780	336	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe	79
PID 928 wrote to memory of 684	928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe	84
PID 928 wrote to memory of 684	928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe	84
PID 928 wrote to memory of 684	928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe	84
PID 928 wrote to memory of 2220	928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe	86
PID 928 wrote to memory of 2220	928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe	86
PID 2220 wrote to memory of 2472	2220	cmd.exe	88
PID 2220 wrote to memory of 2472	2220	cmd.exe	88
PID 928 wrote to memory of 2380	928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe	89
PID 928 wrote to memory of 2380	928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe	89
PID 928 wrote to memory of 2380	928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe	89
PID 928 wrote to memory of 2176	928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe	91
PID 928 wrote to memory of 2176	928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe	91
PID 928 wrote to memory of 2176	928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe	91
PID 928 wrote to memory of 804	928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe	93
PID 928 wrote to memory of 804	928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe	93
PID 928 wrote to memory of 804	928	afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe	93
PID 804 wrote to memory of 4936	804	csrss.exe	94
PID 804 wrote to memory of 4936	804	csrss.exe	94
PID 804 wrote to memory of 4936	804	csrss.exe	94
PID 804 wrote to memory of 3316	804	csrss.exe	100
PID 804 wrote to memory of 3316	804	csrss.exe	100
PID 804 wrote to memory of 3316	804	csrss.exe	100
PID 804 wrote to memory of 5100	804	csrss.exe	102
PID 804 wrote to memory of 5100	804	csrss.exe	102
PID 804 wrote to memory of 5100	804	csrss.exe	102
PID 804 wrote to memory of 4576	804	csrss.exe	104
PID 804 wrote to memory of 4576	804	csrss.exe	104
PID 2820 wrote to memory of 2832	2820	windefender.exe	110
PID 2820 wrote to memory of 2832	2820	windefender.exe	110
PID 2820 wrote to memory of 2832	2820	windefender.exe	110
PID 2832 wrote to memory of 1524	2832	cmd.exe	111
PID 2832 wrote to memory of 1524	2832	cmd.exe	111
PID 2832 wrote to memory of 1524	2832	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\afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
"C:\Users\Admin\AppData\Local\Temp\afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:336
- 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:3780
- C:\Users\Admin\AppData\Local\Temp\afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.exe
  "C:\Users\Admin\AppData\Local\Temp\afa534224d1969fbab79ecd20e489be991e9401d2376bb5d2748d345797e9c7c.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:928
- - 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:684
- - 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:2220
  - - 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:2472
- - 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:2380
- - 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:2176
- - 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:804
  - - 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:4936
  - - 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:1448
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:1224
  - - 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:3316
  - - 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:5100
  - - 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:4576
  - - 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:4300
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:2820
    - - 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:2832
      - 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:1524

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1868

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_y4iz3n34.usi.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_y4iz3n34.usi.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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