glupteba | 3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d

Analysis

max time kernel
149s
max time network
128s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
19/05/2024, 11:35

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General

Target
3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Size 4.1MB
Sample240519-np9wcaff46
SHA256 3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d
MD5 3de09c78f5f3f439ae088e7a0811a24d
SHA1 58e0a50a54ad4e7a16fdeeba1bf12158aa4dfc77
SHA512 9e6314454cde365d2def585feb668314c87fbcb6d2e3d598fbfa91485f441fe35b3028c71736d10414b2b79bb4af8ff66e8c88418087fed0264dde34456c5f10
SSDEEP 98304:+k/C6baF9NNXYvR+SQPyohxfWe3/GY9pAEj6U:+n6bazjovoyoHfX3/GYH/
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion execution loader persistence rootkit

Malware Config

Signatures

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

Glupteba payload 19 IoCs

resource	yara_rule
behavioral2/memory/1360-2-0x0000000004600000-0x0000000004EEB000-memory.dmp	family_glupteba
behavioral2/memory/1360-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/1360-53-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/1360-54-0x0000000004600000-0x0000000004EEB000-memory.dmp	family_glupteba
behavioral2/memory/1360-51-0x0000000000400000-0x0000000002364000-memory.dmp	family_glupteba
behavioral2/memory/1600-123-0x0000000000400000-0x0000000002364000-memory.dmp	family_glupteba
behavioral2/memory/4860-198-0x0000000000400000-0x0000000002364000-memory.dmp	family_glupteba
behavioral2/memory/4860-204-0x0000000000400000-0x0000000002364000-memory.dmp	family_glupteba
behavioral2/memory/4860-205-0x0000000000400000-0x0000000002364000-memory.dmp	family_glupteba
behavioral2/memory/4860-206-0x0000000000400000-0x0000000002364000-memory.dmp	family_glupteba
behavioral2/memory/4860-207-0x0000000000400000-0x0000000002364000-memory.dmp	family_glupteba
behavioral2/memory/4860-208-0x0000000000400000-0x0000000002364000-memory.dmp	family_glupteba
behavioral2/memory/4860-209-0x0000000000400000-0x0000000002364000-memory.dmp	family_glupteba
behavioral2/memory/4860-210-0x0000000000400000-0x0000000002364000-memory.dmp	family_glupteba
behavioral2/memory/4860-211-0x0000000000400000-0x0000000002364000-memory.dmp	family_glupteba
behavioral2/memory/4860-212-0x0000000000400000-0x0000000002364000-memory.dmp	family_glupteba
behavioral2/memory/4860-213-0x0000000000400000-0x0000000002364000-memory.dmp	family_glupteba
behavioral2/memory/4860-214-0x0000000000400000-0x0000000002364000-memory.dmp	family_glupteba
behavioral2/memory/4860-215-0x0000000000400000-0x0000000002364000-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
3688	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
4860	csrss.exe
1232	injector.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2457560273-69882387-977367775-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2457560273-69882387-977367775-1000\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 created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
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

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	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
File created	C:\Windows\rss\csrss.exe	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1424	powershell.exe
4884	powershell.exe
1976	powershell.exe
2420	powershell.exe
1952	powershell.exe
3860	powershell.exe
3836	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
4984	schtasks.exe
3448	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-51 = "Greenland Daylight Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2772 = "Omsk Standard Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	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,-161 = "Central Daylight Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-362 = "GTB Standard Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-452 = "Caucasus Standard Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1971 = "Belarus Daylight Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1831 = "Russia TZ 2 Daylight Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3051 = "Qyzylorda Daylight Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2531 = "Chatham Islands Daylight Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-291 = "Central European Daylight Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.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\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.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\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2892 = "Sudan Standard Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\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\C:\Windows\system32\,@tzres.dll,-2942 = "Sao Tome Standard Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2751 = "Tomsk Daylight Time"	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1424	powershell.exe
1424	powershell.exe
1360	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
1360	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
4884	powershell.exe
4884	powershell.exe
1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
1976	powershell.exe
1976	powershell.exe
2420	powershell.exe
2420	powershell.exe
1952	powershell.exe
1952	powershell.exe
3860	powershell.exe
3860	powershell.exe
3836	powershell.exe
3836	powershell.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
4860	csrss.exe
4860	csrss.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
4860	csrss.exe
4860	csrss.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe
1232	injector.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	1424	powershell.exe
Token: SeDebugPrivilege	1360	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Token: SeImpersonatePrivilege	1360	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
Token: SeDebugPrivilege	4884	powershell.exe
Token: SeDebugPrivilege	1976	powershell.exe
Token: SeDebugPrivilege	2420	powershell.exe
Token: SeDebugPrivilege	1952	powershell.exe
Token: SeDebugPrivilege	3860	powershell.exe
Token: SeDebugPrivilege	3836	powershell.exe
Token: SeSystemEnvironmentPrivilege	4860	csrss.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1360 wrote to memory of 1424	1360	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe	78
PID 1360 wrote to memory of 1424	1360	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe	78
PID 1360 wrote to memory of 1424	1360	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe	78
PID 1600 wrote to memory of 4884	1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe	83
PID 1600 wrote to memory of 4884	1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe	83
PID 1600 wrote to memory of 4884	1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe	83
PID 1600 wrote to memory of 2260	1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe	85
PID 1600 wrote to memory of 2260	1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe	85
PID 2260 wrote to memory of 3688	2260	cmd.exe	87
PID 2260 wrote to memory of 3688	2260	cmd.exe	87
PID 1600 wrote to memory of 1976	1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe	88
PID 1600 wrote to memory of 1976	1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe	88
PID 1600 wrote to memory of 1976	1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe	88
PID 1600 wrote to memory of 2420	1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe	90
PID 1600 wrote to memory of 2420	1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe	90
PID 1600 wrote to memory of 2420	1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe	90
PID 1600 wrote to memory of 4860	1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe	92
PID 1600 wrote to memory of 4860	1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe	92
PID 1600 wrote to memory of 4860	1600	3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe	92
PID 4860 wrote to memory of 1952	4860	csrss.exe	93
PID 4860 wrote to memory of 1952	4860	csrss.exe	93
PID 4860 wrote to memory of 1952	4860	csrss.exe	93
PID 4860 wrote to memory of 3860	4860	csrss.exe	99
PID 4860 wrote to memory of 3860	4860	csrss.exe	99
PID 4860 wrote to memory of 3860	4860	csrss.exe	99
PID 4860 wrote to memory of 3836	4860	csrss.exe	101
PID 4860 wrote to memory of 3836	4860	csrss.exe	101
PID 4860 wrote to memory of 3836	4860	csrss.exe	101
PID 4860 wrote to memory of 1232	4860	csrss.exe	103
PID 4860 wrote to memory of 1232	4860	csrss.exe	103

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\3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
"C:\Users\Admin\AppData\Local\Temp\3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1360
- 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:1424
- C:\Users\Admin\AppData\Local\Temp\3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.exe
  "C:\Users\Admin\AppData\Local\Temp\3e8a0be93e3c20bb2bebef0597d439032920e3485f611f572b000f77f56b8b4d.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:1600
- - 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:4884
- - 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:2260
  - - 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:3688
- - 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:1976
- - 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:2420
- - C:\Windows\rss\csrss.exe
    C:\Windows\rss\csrss.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Manipulates WinMonFS driver.
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4860
  - - 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:1952
  - - 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:4984
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:1776
  - - 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:3860
  - - 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:3836
  - - 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:1232
  - - 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:3448

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_mn0zvtpz.nko.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mn0zvtpz.nko.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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