glupteba | c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601

Analysis

max time kernel
150s
max time network
144s
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, 16:27

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General

Target
c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Size 4.1MB
Sample240519-tx3d5afe3t
SHA256 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601
MD5 3f2d5b5b9aeadc636dbf6ea91c17c16f
SHA1 c1cc44feff2001f206f488898546827c6f8727d6
SHA512 da9b633b0bcc5154ae2a9f7423210bb80bff599d30ee29866c0924cb2cd591881c06d11c5c3b799468972f3b089387fc6ba2a19449647e22c1b69303784c1ddb
SSDEEP 98304:5vHfbigA34ifkpJZQU0TgaIfW6UkFHwAhDtgwFW+12:5vHfb2IifudqhIuUHwAjW+M
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
behavioral1/memory/536-2-0x00000000048D0000-0x00000000051BB000-memory.dmp	family_glupteba
behavioral1/memory/536-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/536-156-0x00000000048D0000-0x00000000051BB000-memory.dmp	family_glupteba
behavioral1/memory/536-154-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral1/memory/536-213-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4040-212-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral1/memory/2528-215-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral1/memory/2528-227-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral1/memory/2528-230-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral1/memory/2528-234-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral1/memory/2528-239-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral1/memory/2528-243-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral1/memory/2528-247-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral1/memory/2528-250-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral1/memory/2528-255-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral1/memory/2528-259-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral1/memory/2528-263-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral1/memory/2528-267-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral1/memory/2528-270-0x0000000000400000-0x0000000002733000-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
2196	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
2528	csrss.exe
2948	injector.exe
3480	windefender.exe
1936	windefender.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000800000002343a-219.dat	upx
behavioral1/memory/1936-223-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral1/memory/3480-224-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral1/memory/3480-220-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral1/memory/1936-229-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral1/memory/1936-237-0x0000000000400000-0x00000000008DF000-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-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	csrss.exe

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

Query Registry
T1012

Manipulates WinMonFS driver. 1 IoCs

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

rootkit evasion

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

Drops file in System32 directory 7 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe

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

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

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\VBoxMiniRdrDN	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\rss\csrss.exe	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
File created	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\rss	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe

Launches sc.exe 1 IoCs

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

pid	Process
4632	sc.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1992	powershell.exe
1428	powershell.exe
428	powershell.exe
2052	powershell.exe
4944	powershell.exe
4232	powershell.exe
3228	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
3988	schtasks.exe
2052	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,-891 = "Morocco Daylight Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2891 = "Sudan Daylight Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2181 = "Astrakhan Daylight Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2531 = "Chatham Islands Daylight Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-112 = "Eastern Standard Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-732 = "Fiji Standard Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1871 = "Russia TZ 7 Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.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,-2182 = "Astrakhan Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2411 = "Marquesas Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	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,-3142 = "South Sudan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-691 = "Tasmania Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1821 = "Russia TZ 1 Daylight Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.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,-448 = "Azerbaijan Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-452 = "Caucasus Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-385 = "Namibia Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	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,-81 = "Atlantic Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-832 = "SA Eastern Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-92 = "Pacific SA Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-448 = "Azerbaijan Daylight Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1841 = "Russia TZ 4 Daylight Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3051 = "Qyzylorda Daylight Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2341 = "Haiti Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time"	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1992	powershell.exe
1992	powershell.exe
536	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
536	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
1428	powershell.exe
1428	powershell.exe
1428	powershell.exe
4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
428	powershell.exe
428	powershell.exe
428	powershell.exe
2052	powershell.exe
2052	powershell.exe
2052	powershell.exe
4944	powershell.exe
4944	powershell.exe
4944	powershell.exe
4232	powershell.exe
4232	powershell.exe
4232	powershell.exe
3228	powershell.exe
3228	powershell.exe
3228	powershell.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe
2528	csrss.exe
2528	csrss.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe
2528	csrss.exe
2528	csrss.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe
2528	csrss.exe
2528	csrss.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe
2948	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	1992	powershell.exe
Token: SeDebugPrivilege	536	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Token: SeImpersonatePrivilege	536	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Token: SeDebugPrivilege	1428	powershell.exe
Token: SeDebugPrivilege	428	powershell.exe
Token: SeDebugPrivilege	2052	powershell.exe
Token: SeDebugPrivilege	4944	powershell.exe
Token: SeDebugPrivilege	4232	powershell.exe
Token: SeDebugPrivilege	3228	powershell.exe
Token: SeSystemEnvironmentPrivilege	2528	csrss.exe
Token: SeSecurityPrivilege	4632	sc.exe
Token: SeSecurityPrivilege	4632	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 536 wrote to memory of 1992	536	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe	87
PID 536 wrote to memory of 1992	536	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe	87
PID 536 wrote to memory of 1992	536	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe	87
PID 4040 wrote to memory of 1428	4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe	96
PID 4040 wrote to memory of 1428	4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe	96
PID 4040 wrote to memory of 1428	4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe	96
PID 4040 wrote to memory of 4232	4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe	132
PID 4040 wrote to memory of 4232	4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe	132
PID 4232 wrote to memory of 2196	4232	cmd.exe	103
PID 4232 wrote to memory of 2196	4232	cmd.exe	103
PID 4040 wrote to memory of 428	4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe	104
PID 4040 wrote to memory of 428	4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe	104
PID 4040 wrote to memory of 428	4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe	104
PID 4040 wrote to memory of 2052	4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe	123
PID 4040 wrote to memory of 2052	4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe	123
PID 4040 wrote to memory of 2052	4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe	123
PID 4040 wrote to memory of 2528	4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe	110
PID 4040 wrote to memory of 2528	4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe	110
PID 4040 wrote to memory of 2528	4040	c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe	110
PID 2528 wrote to memory of 4944	2528	csrss.exe	111
PID 2528 wrote to memory of 4944	2528	csrss.exe	111
PID 2528 wrote to memory of 4944	2528	csrss.exe	111
PID 2528 wrote to memory of 4232	2528	csrss.exe	132
PID 2528 wrote to memory of 4232	2528	csrss.exe	132
PID 2528 wrote to memory of 4232	2528	csrss.exe	132
PID 2528 wrote to memory of 3228	2528	csrss.exe	119
PID 2528 wrote to memory of 3228	2528	csrss.exe	119
PID 2528 wrote to memory of 3228	2528	csrss.exe	119
PID 2528 wrote to memory of 2948	2528	csrss.exe	121
PID 2528 wrote to memory of 2948	2528	csrss.exe	121
PID 3480 wrote to memory of 1852	3480	windefender.exe	127
PID 3480 wrote to memory of 1852	3480	windefender.exe	127
PID 3480 wrote to memory of 1852	3480	windefender.exe	127
PID 1852 wrote to memory of 4632	1852	cmd.exe	128
PID 1852 wrote to memory of 4632	1852	cmd.exe	128
PID 1852 wrote to memory of 4632	1852	cmd.exe	128

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\c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
"C:\Users\Admin\AppData\Local\Temp\c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:536
- 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:1992
- C:\Users\Admin\AppData\Local\Temp\c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
  "C:\Users\Admin\AppData\Local\Temp\c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.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:4040
- - 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:1428
- - 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:4232
  - - 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:2196
- - 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:428
- - 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:2052
- - 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:2528
  - - 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:4944
  - - 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:3988
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:1276
  - - 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:4232
  - - 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:3228
  - - 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:2948
  - - 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:2052
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:3480
    - - 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:1852
      - 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:4632

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1936

C:\Windows\system32\backgroundTaskHost.exe
"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
1⤵
PID:4232

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_epueft4k.ioq.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_epueft4k.ioq.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 92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
MD5 968cb9309758126772781b83adb8a28f
SHA1 8da30e71accf186b2ba11da1797cf67f8f78b47c
SHA512 4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
MD5 SHA1 SHA512

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