glupteba | a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56

Analysis

max time kernel
150s
max time network
157s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
19/04/2024, 00:30

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General

Target
a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Size 4.2MB
Sample240419-atjm3abc45
SHA256 a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56
MD5 db2f82bd4be6cae23ed3eebaad207993
SHA1 f17b93c0398cc53bc15b399bbd6b54edf8cbbd19
SHA512 cfdc32e0ec96bfd2cf2964d3f7aab772303eb176ba114712328c4c9c2b2b8cbe5b4c1523063c37aa906e9d78510af110e4187243d96baa4622cf2f101c8de512
SSDEEP 98304:ebvDuo/zvoC5HERRwr8YNEXJ0TS4JBXxT3BRfe7gLCxccCwfp3PGPzDBAeGjYAO:enBoCproYNEXJ0O+Xpe7jrRPGnBARjfO
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit upx

Malware Config

Signatures

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

Glupteba payload 16 IoCs

resource	yara_rule
behavioral2/memory/956-2-0x0000000005310000-0x0000000005BFB000-memory.dmp	family_glupteba
behavioral2/memory/956-3-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/956-23-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/956-53-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/956-54-0x0000000005310000-0x0000000005BFB000-memory.dmp	family_glupteba
behavioral2/memory/4996-56-0x0000000005150000-0x0000000005A3B000-memory.dmp	family_glupteba
behavioral2/memory/4996-57-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/4996-71-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/4996-90-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/4996-99-0x00000000034A0000-0x00000000038A4000-memory.dmp	family_glupteba
behavioral2/memory/4996-140-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/4996-147-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/3972-199-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/3972-246-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/3972-254-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/3972-256-0x0000000000400000-0x0000000003009000-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
4360	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
3972	csrss.exe
2524	injector.exe
1348	windefender.exe
4332	windefender.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002aa0d-249.dat	upx
behavioral2/memory/1348-253-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4332-255-0x0000000000400000-0x00000000008DF000-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-1-5-21-1734202354-1504186683-2192872036-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1734202354-1504186683-2192872036-1000\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	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\rss	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
File created	C:\Windows\rss\csrss.exe	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
File created	C:\Windows\windefender.exe	csrss.exe

Launches sc.exe 1 IoCs

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

pid	Process
3096	sc.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4968	956	WerFault.exe	79

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
4960	schtasks.exe
4540	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1821 = "Russia TZ 1 Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-452 = "Caucasus Standard Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2161 = "Altai Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1932 = "Russia TZ 11 Standard Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	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
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-831 = "SA Eastern Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2941 = "Sao Tome Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1931 = "Russia TZ 11 Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-291 = "Central European Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-221 = "Alaskan Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-41 = "E. South America Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-384 = "Namibia Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-71 = "Newfoundland Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-51 = "Greenland Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2872 = "Magallanes Standard Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time"	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3068	powershell.exe
3068	powershell.exe
956	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
956	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
3256	powershell.exe
3256	powershell.exe
4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
1888	powershell.exe
1888	powershell.exe
2152	powershell.exe
2152	powershell.exe
3448	powershell.exe
3448	powershell.exe
4872	powershell.exe
4872	powershell.exe
2832	powershell.exe
2832	powershell.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
3972	csrss.exe
3972	csrss.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
3972	csrss.exe
3972	csrss.exe
2524	injector.exe
2524	injector.exe
3972	csrss.exe
3972	csrss.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe
2524	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	3068	powershell.exe
Token: SeDebugPrivilege	956	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Token: SeImpersonatePrivilege	956	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
Token: SeDebugPrivilege	3256	powershell.exe
Token: SeDebugPrivilege	1888	powershell.exe
Token: SeDebugPrivilege	2152	powershell.exe
Token: SeDebugPrivilege	3448	powershell.exe
Token: SeDebugPrivilege	4872	powershell.exe
Token: SeDebugPrivilege	2832	powershell.exe
Token: SeSystemEnvironmentPrivilege	3972	csrss.exe
Token: SeSecurityPrivilege	3096	sc.exe
Token: SeSecurityPrivilege	3096	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 956 wrote to memory of 3068	956	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe	82
PID 956 wrote to memory of 3068	956	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe	82
PID 956 wrote to memory of 3068	956	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe	82
PID 4996 wrote to memory of 3256	4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe	90
PID 4996 wrote to memory of 3256	4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe	90
PID 4996 wrote to memory of 3256	4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe	90
PID 4996 wrote to memory of 3436	4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe	92
PID 4996 wrote to memory of 3436	4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe	92
PID 3436 wrote to memory of 4360	3436	cmd.exe	94
PID 3436 wrote to memory of 4360	3436	cmd.exe	94
PID 4996 wrote to memory of 1888	4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe	95
PID 4996 wrote to memory of 1888	4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe	95
PID 4996 wrote to memory of 1888	4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe	95
PID 4996 wrote to memory of 2152	4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe	97
PID 4996 wrote to memory of 2152	4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe	97
PID 4996 wrote to memory of 2152	4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe	97
PID 4996 wrote to memory of 3972	4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe	99
PID 4996 wrote to memory of 3972	4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe	99
PID 4996 wrote to memory of 3972	4996	a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe	99
PID 3972 wrote to memory of 3448	3972	csrss.exe	100
PID 3972 wrote to memory of 3448	3972	csrss.exe	100
PID 3972 wrote to memory of 3448	3972	csrss.exe	100
PID 3972 wrote to memory of 4872	3972	csrss.exe	106
PID 3972 wrote to memory of 4872	3972	csrss.exe	106
PID 3972 wrote to memory of 4872	3972	csrss.exe	106
PID 3972 wrote to memory of 2832	3972	csrss.exe	108
PID 3972 wrote to memory of 2832	3972	csrss.exe	108
PID 3972 wrote to memory of 2832	3972	csrss.exe	108
PID 3972 wrote to memory of 2524	3972	csrss.exe	110
PID 3972 wrote to memory of 2524	3972	csrss.exe	110
PID 1348 wrote to memory of 1888	1348	windefender.exe	116
PID 1348 wrote to memory of 1888	1348	windefender.exe	116
PID 1348 wrote to memory of 1888	1348	windefender.exe	116
PID 1888 wrote to memory of 3096	1888	cmd.exe	117
PID 1888 wrote to memory of 3096	1888	cmd.exe	117
PID 1888 wrote to memory of 3096	1888	cmd.exe	117

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\a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
"C:\Users\Admin\AppData\Local\Temp\a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:956
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3068
- C:\Users\Admin\AppData\Local\Temp\a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.exe
  "C:\Users\Admin\AppData\Local\Temp\a926dc8461fab2c86548ee05b7323e591b517a88e8dd64514f3dff1b7f08aa56.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:4996
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3256
- - 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:3436
  - - 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:4360
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1888
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2152
- - 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:3972
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3448
  - - 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:4960
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:4484
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4872
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2832
  - - 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:2524
  - - 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:4540
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:1348
    - - 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:1888
      - 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:3096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 956 -s 976
  2⤵
  - Program crash
  PID:4968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 956 -ip 956
1⤵
PID:3944

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
PID:4332

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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_prtnto0u.3c4.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_prtnto0u.3c4.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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injector.exe

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

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powershell.exe.log

Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Size 2KB
SHA256 9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
MD5 d0c46cad6c0778401e21910bd6b56b70
SHA1 7be418951ea96326aca445b8dfe449b2bfa0dca6
SHA512 057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949
MD5 SHA1 SHA512

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