glupteba | 3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520

Analysis

max time kernel
150s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
19/05/2024, 21:16

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General

Target
3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Size 4.1MB
Sample240519-z4fftsac62
SHA256 3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520
MD5 3c600d96b15616b81003faf9eeb2d9fd
SHA1 49d41dc0f76caa32a88d322d3d83848744190083
SHA512 7e7adb53ff07ce21d3735d5fa7d2467da5e333f6fbfdf97f2529505b510cdf48d8acc084ccb148d80392aa3445e606c3578936c849c161b24b29a64b42771718
SSDEEP 98304:wuOdAWE/bfbxbxBimum48oJjLrUZhWcgWy75MTps2CObMUZCzBS0:wuOpIddBi3V8Ojm7gWylM939Ct
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 19 IoCs

resource	yara_rule
behavioral2/memory/3388-2-0x0000000004860000-0x000000000514B000-memory.dmp	family_glupteba
behavioral2/memory/3388-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/3388-80-0x0000000004860000-0x000000000514B000-memory.dmp	family_glupteba
behavioral2/memory/3388-79-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/116-135-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/3388-171-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4616-208-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4616-216-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4616-228-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4616-230-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4616-233-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4616-236-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4616-240-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4616-242-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4616-245-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4616-248-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4616-252-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4616-254-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4616-257-0x0000000000400000-0x000000000273B000-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
4304	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
4616	csrss.exe
4872	injector.exe
1828	windefender.exe
2620	windefender.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0009000000023404-219.dat	upx
behavioral2/memory/1828-221-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2620-224-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/1828-226-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2620-229-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2620-235-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2620-244-0x0000000000400000-0x00000000008DF000-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-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\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 created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe

Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\VBoxMiniRdrDN	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.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	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
File created	C:\Windows\rss\csrss.exe	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe

Launches sc.exe 1 IoCs

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

pid	Process
776	sc.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2452	powershell.exe
5068	powershell.exe
4388	powershell.exe
3484	powershell.exe
3476	powershell.exe
1764	powershell.exe
3936	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
2508	schtasks.exe
3036	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\@tzres.dll,-562 = "SE Asia Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-931 = "Coordinated Universal Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.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,-2771 = "Omsk Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-41 = "E. South America Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.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\trust\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,-2142 = "Transbaikal Standard Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	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,-221 = "Alaskan Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2392 = "Aleutian Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2842 = "Saratov Standard Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.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,-331 = "E. Europe Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	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,-842 = "Argentina Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2342 = "Haiti Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.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,-672 = "AUS Eastern Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\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,-2161 = "Altai Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-435 = "Georgian Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-51 = "Greenland Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2872 = "Magallanes Standard Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-232 = "Hawaiian Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-181 = "Mountain Daylight Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2751 = "Tomsk Daylight Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	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,-392 = "Arab Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-41 = "E. South America Daylight Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-201 = "US Mountain Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	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\2a\52C64B7E\@tzres.dll,-372 = "Jerusalem Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-332 = "E. Europe Standard Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2772 = "Omsk Standard Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-831 = "SA Eastern Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2571 = "Turks and Caicos Daylight Time"	windefender.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"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-141 = "Canada Central Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2061 = "North Korea Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1971 = "Belarus Daylight Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-572 = "China Standard Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1911 = "Russia TZ 10 Daylight Time"	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2372 = "Easter Island Standard Time"	windefender.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3484	powershell.exe
3484	powershell.exe
3388	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
3388	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
3476	powershell.exe
3476	powershell.exe
116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
1764	powershell.exe
1764	powershell.exe
3936	powershell.exe
3936	powershell.exe
2452	powershell.exe
2452	powershell.exe
5068	powershell.exe
5068	powershell.exe
4388	powershell.exe
4388	powershell.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4616	csrss.exe
4616	csrss.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4616	csrss.exe
4616	csrss.exe
4872	injector.exe
4872	injector.exe
4616	csrss.exe
4616	csrss.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe
4872	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	3484	powershell.exe
Token: SeDebugPrivilege	3388	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Token: SeImpersonatePrivilege	3388	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
Token: SeDebugPrivilege	3476	powershell.exe
Token: SeDebugPrivilege	1764	powershell.exe
Token: SeDebugPrivilege	3936	powershell.exe
Token: SeDebugPrivilege	2452	powershell.exe
Token: SeDebugPrivilege	5068	powershell.exe
Token: SeDebugPrivilege	4388	powershell.exe
Token: SeSystemEnvironmentPrivilege	4616	csrss.exe
Token: SeSecurityPrivilege	776	sc.exe
Token: SeSecurityPrivilege	776	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 3388 wrote to memory of 3484	3388	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe	83
PID 3388 wrote to memory of 3484	3388	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe	83
PID 3388 wrote to memory of 3484	3388	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe	83
PID 116 wrote to memory of 3476	116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe	91
PID 116 wrote to memory of 3476	116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe	91
PID 116 wrote to memory of 3476	116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe	91
PID 116 wrote to memory of 2548	116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe	94
PID 116 wrote to memory of 2548	116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe	94
PID 2548 wrote to memory of 4304	2548	cmd.exe	97
PID 2548 wrote to memory of 4304	2548	cmd.exe	97
PID 116 wrote to memory of 1764	116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe	98
PID 116 wrote to memory of 1764	116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe	98
PID 116 wrote to memory of 1764	116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe	98
PID 116 wrote to memory of 3936	116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe	100
PID 116 wrote to memory of 3936	116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe	100
PID 116 wrote to memory of 3936	116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe	100
PID 116 wrote to memory of 4616	116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe	102
PID 116 wrote to memory of 4616	116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe	102
PID 116 wrote to memory of 4616	116	3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe	102
PID 4616 wrote to memory of 2452	4616	csrss.exe	103
PID 4616 wrote to memory of 2452	4616	csrss.exe	103
PID 4616 wrote to memory of 2452	4616	csrss.exe	103
PID 4616 wrote to memory of 5068	4616	csrss.exe	108
PID 4616 wrote to memory of 5068	4616	csrss.exe	108
PID 4616 wrote to memory of 5068	4616	csrss.exe	108
PID 4616 wrote to memory of 4388	4616	csrss.exe	111
PID 4616 wrote to memory of 4388	4616	csrss.exe	111
PID 4616 wrote to memory of 4388	4616	csrss.exe	111
PID 4616 wrote to memory of 4872	4616	csrss.exe	114
PID 4616 wrote to memory of 4872	4616	csrss.exe	114
PID 1828 wrote to memory of 3808	1828	windefender.exe	120
PID 1828 wrote to memory of 3808	1828	windefender.exe	120
PID 1828 wrote to memory of 3808	1828	windefender.exe	120
PID 3808 wrote to memory of 776	3808	cmd.exe	121
PID 3808 wrote to memory of 776	3808	cmd.exe	121
PID 3808 wrote to memory of 776	3808	cmd.exe	121

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\3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
"C:\Users\Admin\AppData\Local\Temp\3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3388
- 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:3484
- C:\Users\Admin\AppData\Local\Temp\3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.exe
  "C:\Users\Admin\AppData\Local\Temp\3b872c63abf8bfc54f647416389cf11b7161224b8a8f7c9df1c6f7a3283f5520.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:116
- - 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:3476
- - 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:2548
  - - 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:4304
- - 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:1764
- - 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:3936
- - 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:4616
  - - 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:2452
  - - 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:3036
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:2396
  - - 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:5068
  - - 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:4388
  - - 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:4872
  - - 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:2508
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:1828
    - - 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:3808
      - 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:776

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_pl1u5elt.cpc.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pl1u5elt.cpc.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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