glupteba | 5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d

Analysis

max time kernel
149s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
19/05/2024, 09:00

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General

Target
5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Size 4.1MB
Sample240519-kyd89abd22
SHA256 5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d
MD5 983f78a4179867e5818b73db3e5e8b1d
SHA1 aeeaa70a50f085930e3a5f6dbc381b199282fa15
SHA512 3e47961b20fba86879f682a63aa75ae9e008a80663421e490c1aafe0d806a8c8e978eed92c4b2103803fd4193d6bf81427046ec014c2ee7f7e86cc2e08e8c2f6
SSDEEP 98304:gvCQaDBnSWO/B+XxjapSyZlG1PnsYHdaWgIg92gsnC3bzMZh6P1+:gvC3DFSWO/BjYGk1PnXHoWWZ1za6N+
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion execution loader persistence rootkit

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/2892-2-0x0000000004650000-0x0000000004F3B000-memory.dmp	family_glupteba
behavioral2/memory/2892-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/2892-57-0x0000000004650000-0x0000000004F3B000-memory.dmp	family_glupteba
behavioral2/memory/2892-55-0x0000000000400000-0x0000000002365000-memory.dmp	family_glupteba
behavioral2/memory/2892-56-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/3884-134-0x0000000000400000-0x0000000002365000-memory.dmp	family_glupteba
behavioral2/memory/2108-219-0x0000000000400000-0x0000000002365000-memory.dmp	family_glupteba
behavioral2/memory/2108-220-0x0000000000400000-0x0000000002365000-memory.dmp	family_glupteba
behavioral2/memory/2108-221-0x0000000000400000-0x0000000002365000-memory.dmp	family_glupteba
behavioral2/memory/2108-222-0x0000000000400000-0x0000000002365000-memory.dmp	family_glupteba
behavioral2/memory/2108-223-0x0000000000400000-0x0000000002365000-memory.dmp	family_glupteba
behavioral2/memory/2108-224-0x0000000000400000-0x0000000002365000-memory.dmp	family_glupteba
behavioral2/memory/2108-225-0x0000000000400000-0x0000000002365000-memory.dmp	family_glupteba
behavioral2/memory/2108-226-0x0000000000400000-0x0000000002365000-memory.dmp	family_glupteba
behavioral2/memory/2108-227-0x0000000000400000-0x0000000002365000-memory.dmp	family_glupteba
behavioral2/memory/2108-228-0x0000000000400000-0x0000000002365000-memory.dmp	family_glupteba
behavioral2/memory/2108-229-0x0000000000400000-0x0000000002365000-memory.dmp	family_glupteba
behavioral2/memory/2108-230-0x0000000000400000-0x0000000002365000-memory.dmp	family_glupteba
behavioral2/memory/2108-231-0x0000000000400000-0x0000000002365000-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
3292	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
2108	csrss.exe
812	injector.exe

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-1-5-21-711569230-3659488422-571408806-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\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 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

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	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
File created	C:\Windows\rss\csrss.exe	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1444	powershell.exe
1492	powershell.exe
812	powershell.exe
2556	powershell.exe
2988	powershell.exe
3832	powershell.exe
2028	powershell.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
664	2892	WerFault.exe	84

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
3668	schtasks.exe
3164	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,-722 = "Central Pacific Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-371 = "Jerusalem Daylight Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-631 = "Tokyo Daylight Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2771 = "Omsk Daylight Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-652 = "AUS Central Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-291 = "Central European Daylight Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-71 = "Newfoundland Daylight Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3142 = "South Sudan Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2142 = "Transbaikal Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	powershell.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\SmartCardRoot\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2892 = "Sudan Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2572 = "Turks and Caicos Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-105 = "Central Brazilian Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3141 = "South Sudan Daylight Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	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\C:\Windows\system32\,@tzres.dll,-2181 = "Astrakhan Daylight Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	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\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	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\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.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\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.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\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time"	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\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\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1444	powershell.exe
1444	powershell.exe
2892	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
2892	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
1492	powershell.exe
1492	powershell.exe
3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
812	powershell.exe
812	powershell.exe
2556	powershell.exe
2556	powershell.exe
2988	powershell.exe
2988	powershell.exe
3832	powershell.exe
3832	powershell.exe
2028	powershell.exe
2028	powershell.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
2108	csrss.exe
2108	csrss.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
2108	csrss.exe
2108	csrss.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe
812	injector.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	1444	powershell.exe
Token: SeDebugPrivilege	2892	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Token: SeImpersonatePrivilege	2892	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
Token: SeDebugPrivilege	1492	powershell.exe
Token: SeDebugPrivilege	812	powershell.exe
Token: SeDebugPrivilege	2556	powershell.exe
Token: SeDebugPrivilege	2988	powershell.exe
Token: SeDebugPrivilege	3832	powershell.exe
Token: SeDebugPrivilege	2028	powershell.exe
Token: SeSystemEnvironmentPrivilege	2108	csrss.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2892 wrote to memory of 1444	2892	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe	87
PID 2892 wrote to memory of 1444	2892	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe	87
PID 2892 wrote to memory of 1444	2892	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe	87
PID 3884 wrote to memory of 1492	3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe	100
PID 3884 wrote to memory of 1492	3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe	100
PID 3884 wrote to memory of 1492	3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe	100
PID 3884 wrote to memory of 4856	3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe	104
PID 3884 wrote to memory of 4856	3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe	104
PID 4856 wrote to memory of 3292	4856	cmd.exe	106
PID 4856 wrote to memory of 3292	4856	cmd.exe	106
PID 3884 wrote to memory of 812	3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe	107
PID 3884 wrote to memory of 812	3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe	107
PID 3884 wrote to memory of 812	3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe	107
PID 3884 wrote to memory of 2556	3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe	109
PID 3884 wrote to memory of 2556	3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe	109
PID 3884 wrote to memory of 2556	3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe	109
PID 3884 wrote to memory of 2108	3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe	111
PID 3884 wrote to memory of 2108	3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe	111
PID 3884 wrote to memory of 2108	3884	5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe	111
PID 2108 wrote to memory of 2988	2108	csrss.exe	112
PID 2108 wrote to memory of 2988	2108	csrss.exe	112
PID 2108 wrote to memory of 2988	2108	csrss.exe	112
PID 2108 wrote to memory of 3832	2108	csrss.exe	117
PID 2108 wrote to memory of 3832	2108	csrss.exe	117
PID 2108 wrote to memory of 3832	2108	csrss.exe	117
PID 2108 wrote to memory of 2028	2108	csrss.exe	120
PID 2108 wrote to memory of 2028	2108	csrss.exe	120
PID 2108 wrote to memory of 2028	2108	csrss.exe	120
PID 2108 wrote to memory of 812	2108	csrss.exe	122
PID 2108 wrote to memory of 812	2108	csrss.exe	122

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\5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
"C:\Users\Admin\AppData\Local\Temp\5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2892
- 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:1444
- C:\Users\Admin\AppData\Local\Temp\5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.exe
  "C:\Users\Admin\AppData\Local\Temp\5469493967b62a9d55e0e0f7895df32d37e909aa77a7ca7ec6bade23c17b649d.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:3884
- - 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:1492
- - 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:4856
  - - 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:3292
- - 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:812
- - 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:2556
- - C:\Windows\rss\csrss.exe
    C:\Windows\rss\csrss.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Manipulates WinMonFS driver.
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2108
  - - 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:2988
  - - 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:3668
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:4500
  - - 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:3832
  - - 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:2028
  - - 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:812
  - - 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:3164
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2892 -s 832
  2⤵
  - Program crash
  PID:664

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2892 -ip 2892
1⤵
PID:4608

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_dtzr1t4f.50k.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dtzr1t4f.50k.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 6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69
MD5 3d086a433708053f9bf9523e1d87a4e8
SHA1 b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28
SHA512 931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd
MD5 SHA1 SHA512

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