glupteba | b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344

Analysis

max time kernel
149s
max time network
153s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
26/04/2024, 17:42

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General

Target
b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Size 4.2MB
Sample240426-v97p2she81
SHA256 b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344
MD5 cd78c2d5ee3ba4844a380ada5f0abb76
SHA1 3353acb08ef2cd1862b535ec69ba2801e98f9f5c
SHA512 cdb7a55a55440990e1cb87ca9160527ca0a68e8e7e1992a803d6bc5e146dd81c527f766162a260ebeda4046d519eea01b334ae5c9cf1a1b2cbdd69bda93ec962
SSDEEP 49152:ECifvx7B+7FOLxQ63IeExjZRrV5rQg00XFP5L9XkQs+hWJEWJawvScCFBuiQf8KO:ECk8+Qet2rTQI1P5Je65g2FBuWsCvPbb
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion 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/2928-2-0x0000000006530000-0x0000000006E1B000-memory.dmp	family_glupteba
behavioral2/memory/2928-3-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/2928-51-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/2928-52-0x0000000006530000-0x0000000006E1B000-memory.dmp	family_glupteba
behavioral2/memory/4684-120-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/4684-127-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/3552-153-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/3552-178-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/3552-206-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/3552-207-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/3552-208-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/3552-209-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/3552-210-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/3552-211-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/3552-212-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/3552-213-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/3552-214-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/3552-215-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/3552-216-0x0000000000400000-0x0000000004420000-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
228	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
3552	csrss.exe
332	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-1-5-21-734199974-1358367239-436541239-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-734199974-1358367239-436541239-1000\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	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
File created	C:\Windows\rss\csrss.exe	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4864	2928	WerFault.exe	79
4884	4684	WerFault.exe	86

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
4188	schtasks.exe
4376	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	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,-441 = "Arabian Daylight Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-572 = "China Standard Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-752 = "Tonga Standard Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1862 = "Russia TZ 6 Standard Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	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,-841 = "Argentina Daylight Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1822 = "Russia TZ 1 Standard Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	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\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,-672 = "AUS Eastern Standard Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2792 = "Novosibirsk Standard Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	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,-2182 = "Astrakhan Standard Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-82 = "Atlantic Standard Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.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,-334 = "Jordan Daylight Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2891 = "Sudan Daylight Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\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,-842 = "Argentina Standard Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-271 = "Greenwich Daylight Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1802 = "Line Islands Standard Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.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,-1832 = "Russia TZ 2 Standard Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	powershell.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\TrustedPeople	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,-2531 = "Chatham Islands Daylight Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time"	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2568	powershell.exe
2568	powershell.exe
2928	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
2928	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
1192	powershell.exe
1192	powershell.exe
4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
2104	powershell.exe
2104	powershell.exe
1212	powershell.exe
1212	powershell.exe
4992	powershell.exe
4992	powershell.exe
1476	powershell.exe
1476	powershell.exe
5048	powershell.exe
5048	powershell.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
3552	csrss.exe
3552	csrss.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
3552	csrss.exe
3552	csrss.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe
332	injector.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	2568	powershell.exe
Token: SeDebugPrivilege	2928	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Token: SeImpersonatePrivilege	2928	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
Token: SeDebugPrivilege	1192	powershell.exe
Token: SeDebugPrivilege	2104	powershell.exe
Token: SeDebugPrivilege	1212	powershell.exe
Token: SeDebugPrivilege	4992	powershell.exe
Token: SeDebugPrivilege	1476	powershell.exe
Token: SeDebugPrivilege	5048	powershell.exe
Token: SeSystemEnvironmentPrivilege	3552	csrss.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2928 wrote to memory of 2568	2928	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe	81
PID 2928 wrote to memory of 2568	2928	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe	81
PID 2928 wrote to memory of 2568	2928	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe	81
PID 4684 wrote to memory of 1192	4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe	89
PID 4684 wrote to memory of 1192	4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe	89
PID 4684 wrote to memory of 1192	4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe	89
PID 4684 wrote to memory of 2848	4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe	92
PID 4684 wrote to memory of 2848	4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe	92
PID 2848 wrote to memory of 228	2848	cmd.exe	94
PID 2848 wrote to memory of 228	2848	cmd.exe	94
PID 4684 wrote to memory of 2104	4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe	95
PID 4684 wrote to memory of 2104	4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe	95
PID 4684 wrote to memory of 2104	4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe	95
PID 4684 wrote to memory of 1212	4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe	97
PID 4684 wrote to memory of 1212	4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe	97
PID 4684 wrote to memory of 1212	4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe	97
PID 4684 wrote to memory of 3552	4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe	99
PID 4684 wrote to memory of 3552	4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe	99
PID 4684 wrote to memory of 3552	4684	b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe	99
PID 3552 wrote to memory of 4992	3552	csrss.exe	102
PID 3552 wrote to memory of 4992	3552	csrss.exe	102
PID 3552 wrote to memory of 4992	3552	csrss.exe	102
PID 3552 wrote to memory of 1476	3552	csrss.exe	108
PID 3552 wrote to memory of 1476	3552	csrss.exe	108
PID 3552 wrote to memory of 1476	3552	csrss.exe	108
PID 3552 wrote to memory of 5048	3552	csrss.exe	110
PID 3552 wrote to memory of 5048	3552	csrss.exe	110
PID 3552 wrote to memory of 5048	3552	csrss.exe	110
PID 3552 wrote to memory of 332	3552	csrss.exe	112
PID 3552 wrote to memory of 332	3552	csrss.exe	112

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\b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
"C:\Users\Admin\AppData\Local\Temp\b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2928
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2568
- C:\Users\Admin\AppData\Local\Temp\b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.exe
  "C:\Users\Admin\AppData\Local\Temp\b3a56bbef3080f1c3fbefbd4f2a4f597dc4df9712269d674f5373f85e939b344.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:4684
- - 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:1192
- - 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:2848
  - - 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:228
- - 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:2104
- - 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:1212
- - 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:3552
  - - 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:4992
  - - 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:4188
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:3904
  - - 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:1476
  - - 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:5048
  - - 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:332
  - - 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:4376
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4684 -s 884
    3⤵
    - Program crash
    PID:4884
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2928 -s 772
  2⤵
  - Program crash
  PID:4864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2928 -ip 2928
1⤵
PID:1172

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4684 -ip 4684
1⤵
PID:4588

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_e14n3wci.fsj.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_e14n3wci.fsj.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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