glupteba | ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef

Analysis

max time kernel
149s
max time network
155s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
16/05/2024, 09:48

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Report Analysis Logs

General

Target
ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Size 4.1MB
Sample240516-lsw3jsfb98
SHA256 ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef
MD5 a3c419f3f21ea2b1f953b6afffa93ab3
SHA1 fc3d57e90e505d0ea5a1194bc0d244eac6924505
SHA512 ad6f26ce3277538232654956ebe8a07148ff4e817719c123245d107abeb94833cdd21e30602decd70bf6c8806a0a4cb8b6158ff681363dd1e9682b6a026036ac
SSDEEP 98304:NH49zrfgobu9aDMWAg4dPDb/NQHvakIF/A8L3rqLZk5t2qZ3qL2LAZ5q:Er7OagDbOPW/F2k5tRZaLrk
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 18 IoCs

resource	yara_rule
behavioral2/memory/2728-2-0x0000000002E90000-0x000000000377B000-memory.dmp	family_glupteba
behavioral2/memory/2728-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/2728-98-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/2728-100-0x0000000002E90000-0x000000000377B000-memory.dmp	family_glupteba
behavioral2/memory/4456-127-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/476-195-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/476-203-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/476-205-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/476-207-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/476-209-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/476-211-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/476-213-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/476-215-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/476-217-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/476-219-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/476-221-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/476-223-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/476-225-0x0000000000400000-0x0000000000D1C000-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
4340	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
476	csrss.exe
1932	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-1-5-21-2994005945-4089876968-1367784197-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2994005945-4089876968-1367784197-1000\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

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	raw.githubusercontent.com
12	raw.githubusercontent.com

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 created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
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	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\rss\csrss.exe	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
File opened for modification	C:\Windows\rss	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4084	powershell.exe
1572	powershell.exe
2104	powershell.exe
4212	powershell.exe
3348	powershell.exe
1064	powershell.exe
1740	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
3808	schtasks.exe
1708	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,-72 = "Newfoundland Standard Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2751 = "Tomsk Daylight Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2572 = "Turks and Caicos Standard Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2491 = "Aus Central W. Daylight Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-331 = "E. Europe Daylight Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.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\AutoDetect = "0"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-122 = "SA Pacific Standard Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2451 = "Saint Pierre Daylight Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	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\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.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\C:\Windows\system32\,@tzres.dll,-2752 = "Tomsk Standard Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.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"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3142 = "South Sudan Standard Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2392 = "Aleutian Standard Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-652 = "AUS Central Standard Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	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,-2432 = "Cuba Standard Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.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\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time"	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4084	powershell.exe
4084	powershell.exe
2728	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
2728	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
1572	powershell.exe
1572	powershell.exe
4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
2104	powershell.exe
2104	powershell.exe
4212	powershell.exe
4212	powershell.exe
3348	powershell.exe
3348	powershell.exe
1064	powershell.exe
1064	powershell.exe
1740	powershell.exe
1740	powershell.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
476	csrss.exe
476	csrss.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
476	csrss.exe
476	csrss.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe
1932	injector.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	4084	powershell.exe
Token: SeDebugPrivilege	2728	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Token: SeImpersonatePrivilege	2728	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
Token: SeDebugPrivilege	1572	powershell.exe
Token: SeDebugPrivilege	2104	powershell.exe
Token: SeDebugPrivilege	4212	powershell.exe
Token: SeDebugPrivilege	3348	powershell.exe
Token: SeDebugPrivilege	1064	powershell.exe
Token: SeDebugPrivilege	1740	powershell.exe
Token: SeSystemEnvironmentPrivilege	476	csrss.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2728 wrote to memory of 4084	2728	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe	79
PID 2728 wrote to memory of 4084	2728	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe	79
PID 2728 wrote to memory of 4084	2728	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe	79
PID 4456 wrote to memory of 1572	4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe	84
PID 4456 wrote to memory of 1572	4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe	84
PID 4456 wrote to memory of 1572	4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe	84
PID 4456 wrote to memory of 1108	4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe	86
PID 4456 wrote to memory of 1108	4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe	86
PID 1108 wrote to memory of 4340	1108	cmd.exe	88
PID 1108 wrote to memory of 4340	1108	cmd.exe	88
PID 4456 wrote to memory of 2104	4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe	89
PID 4456 wrote to memory of 2104	4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe	89
PID 4456 wrote to memory of 2104	4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe	89
PID 4456 wrote to memory of 4212	4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe	91
PID 4456 wrote to memory of 4212	4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe	91
PID 4456 wrote to memory of 4212	4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe	91
PID 4456 wrote to memory of 476	4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe	93
PID 4456 wrote to memory of 476	4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe	93
PID 4456 wrote to memory of 476	4456	ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe	93
PID 476 wrote to memory of 3348	476	csrss.exe	94
PID 476 wrote to memory of 3348	476	csrss.exe	94
PID 476 wrote to memory of 3348	476	csrss.exe	94
PID 476 wrote to memory of 1064	476	csrss.exe	99
PID 476 wrote to memory of 1064	476	csrss.exe	99
PID 476 wrote to memory of 1064	476	csrss.exe	99
PID 476 wrote to memory of 1740	476	csrss.exe	102
PID 476 wrote to memory of 1740	476	csrss.exe	102
PID 476 wrote to memory of 1740	476	csrss.exe	102
PID 476 wrote to memory of 1932	476	csrss.exe	104
PID 476 wrote to memory of 1932	476	csrss.exe	104

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\ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
"C:\Users\Admin\AppData\Local\Temp\ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2728
- 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:4084
- C:\Users\Admin\AppData\Local\Temp\ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
  "C:\Users\Admin\AppData\Local\Temp\ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.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:4456
- - 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:1572
- - 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:1108
  - - 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:4340
- - 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:2104
- - 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:4212
- - C:\Windows\rss\csrss.exe
    C:\Windows\rss\csrss.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Manipulates WinMonFS driver.
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:476
  - - 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:3348
  - - 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:3808
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:3024
  - - 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:1064
  - - 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:1740
  - - 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:1932
  - - 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:1708

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

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

__PSScriptPolicyTest_1zj0o5ee.c3v.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1zj0o5ee.c3v.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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