glupteba | 4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
16/05/2024, 12:27

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General

Target
4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Size 4.1MB
Sample240516-pmxzfada44
SHA256 4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059
MD5 6374c18960173668ad74b04118d131bf
SHA1 1bb62bece88a95625c8360c2ec76ffc64f87f2a1
SHA512 a75de4c197839e5a1b1ae97da53d28d9e3833e5f6f69a153c192d61d2db53d008dca633433f0217a379633b5c4a5fdb46a08ad17b0fff818e3e09d741565e95a
SSDEEP 98304:N/lx2VB4FLDQS1OmkYbRsTncIxTvyO2P5x7YbDUU8i:dlgkYS1OmbburVLyO2P5x7Yb4I
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion execution loader persistence rootkit upx

Malware Config

Signatures

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

Glupteba payload 18 IoCs

resource	yara_rule
behavioral1/memory/3572-2-0x0000000002D70000-0x000000000365B000-memory.dmp	family_glupteba
behavioral1/memory/3572-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/3572-56-0x0000000002D70000-0x000000000365B000-memory.dmp	family_glupteba
behavioral1/memory/3572-55-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/2396-136-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4608-220-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4608-230-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4608-231-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4608-234-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4608-236-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4608-238-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4608-239-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4608-241-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4608-244-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4608-246-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4608-248-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4608-249-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4608-252-0x0000000000400000-0x0000000000D1C000-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
536	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
4608	csrss.exe
2276	injector.exe
1436	windefender.exe
5076	windefender.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000900000002342c-223.dat	upx
behavioral1/memory/1436-224-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral1/memory/5076-227-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral1/memory/1436-229-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral1/memory/5076-232-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral1/memory/5076-235-0x0000000000400000-0x00000000008DF000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	csrss.exe

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

Query Registry
T1012

Manipulates WinMonFS driver. 1 IoCs

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

rootkit evasion

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

Drops file in System32 directory 7 IoCs

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

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	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
File created	C:\Windows\rss\csrss.exe	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
File created	C:\Windows\windefender.exe	csrss.exe
File opened for modification	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
4416	sc.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2980	powershell.exe
520	powershell.exe
388	powershell.exe
4412	powershell.exe
3312	powershell.exe
3564	powershell.exe
4892	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
2520	schtasks.exe
956	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-732 = "Fiji Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-435 = "Georgian Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1931 = "Russia TZ 11 Daylight Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
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\trust	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1412 = "Syria Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2371 = "Easter Island Daylight Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-501 = "Nepal Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-391 = "Arab Daylight Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-51 = "Greenland Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-591 = "Malay Peninsula Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-272 = "Greenwich Standard Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2162 = "Altai Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1472 = "Magadan Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2391 = "Aleutian Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-441 = "Arabian Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2181 = "Astrakhan Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-682 = "E. Australia Standard Time"	windefender.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\@tzres.dll,-1821 = "Russia TZ 1 Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1661 = "Bahia Daylight Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2941 = "Sao Tome Daylight Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-601 = "Taipei Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-41 = "E. South America Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-384 = "Namibia Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-11 = "Azores Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-142 = "Canada Central Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1892 = "Russia TZ 3 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-448 = "Azerbaijan Daylight Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-662 = "Cen. Australia Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-511 = "Central Asia Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time"	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3312	powershell.exe
3312	powershell.exe
3572	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
3572	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
3564	powershell.exe
3564	powershell.exe
3564	powershell.exe
2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
4892	powershell.exe
4892	powershell.exe
4892	powershell.exe
2980	powershell.exe
2980	powershell.exe
2980	powershell.exe
520	powershell.exe
520	powershell.exe
388	powershell.exe
388	powershell.exe
4412	powershell.exe
4412	powershell.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
4608	csrss.exe
4608	csrss.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
4608	csrss.exe
4608	csrss.exe
2276	injector.exe
2276	injector.exe
4608	csrss.exe
4608	csrss.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe
2276	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	3312	powershell.exe
Token: SeDebugPrivilege	3572	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Token: SeImpersonatePrivilege	3572	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
Token: SeDebugPrivilege	3564	powershell.exe
Token: SeDebugPrivilege	4892	powershell.exe
Token: SeDebugPrivilege	2980	powershell.exe
Token: SeDebugPrivilege	520	powershell.exe
Token: SeDebugPrivilege	388	powershell.exe
Token: SeDebugPrivilege	4412	powershell.exe
Token: SeSystemEnvironmentPrivilege	4608	csrss.exe
Token: SeSecurityPrivilege	4416	sc.exe
Token: SeSecurityPrivilege	4416	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 3572 wrote to memory of 3312	3572	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe	87
PID 3572 wrote to memory of 3312	3572	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe	87
PID 3572 wrote to memory of 3312	3572	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe	87
PID 2396 wrote to memory of 3564	2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe	97
PID 2396 wrote to memory of 3564	2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe	97
PID 2396 wrote to memory of 3564	2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe	97
PID 2396 wrote to memory of 4964	2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe	100
PID 2396 wrote to memory of 4964	2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe	100
PID 4964 wrote to memory of 536	4964	cmd.exe	102
PID 4964 wrote to memory of 536	4964	cmd.exe	102
PID 2396 wrote to memory of 4892	2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe	103
PID 2396 wrote to memory of 4892	2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe	103
PID 2396 wrote to memory of 4892	2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe	103
PID 2396 wrote to memory of 2980	2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe	106
PID 2396 wrote to memory of 2980	2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe	106
PID 2396 wrote to memory of 2980	2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe	106
PID 2396 wrote to memory of 4608	2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe	108
PID 2396 wrote to memory of 4608	2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe	108
PID 2396 wrote to memory of 4608	2396	4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe	108
PID 4608 wrote to memory of 520	4608	csrss.exe	109
PID 4608 wrote to memory of 520	4608	csrss.exe	109
PID 4608 wrote to memory of 520	4608	csrss.exe	109
PID 4608 wrote to memory of 388	4608	csrss.exe	115
PID 4608 wrote to memory of 388	4608	csrss.exe	115
PID 4608 wrote to memory of 388	4608	csrss.exe	115
PID 4608 wrote to memory of 4412	4608	csrss.exe	117
PID 4608 wrote to memory of 4412	4608	csrss.exe	117
PID 4608 wrote to memory of 4412	4608	csrss.exe	117
PID 4608 wrote to memory of 2276	4608	csrss.exe	119
PID 4608 wrote to memory of 2276	4608	csrss.exe	119
PID 1436 wrote to memory of 1464	1436	windefender.exe	127
PID 1436 wrote to memory of 1464	1436	windefender.exe	127
PID 1436 wrote to memory of 1464	1436	windefender.exe	127
PID 1464 wrote to memory of 4416	1464	cmd.exe	128
PID 1464 wrote to memory of 4416	1464	cmd.exe	128
PID 1464 wrote to memory of 4416	1464	cmd.exe	128

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
"C:\Users\Admin\AppData\Local\Temp\4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3572
- 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:3312
- C:\Users\Admin\AppData\Local\Temp\4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.exe
  "C:\Users\Admin\AppData\Local\Temp\4b9ee2adec3bdb59f051da6bc8ec8232d4fa833f5ca96e41de94901f1cc2a059.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:2396
- - 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:3564
- - 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:4964
  - - 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:536
- - 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:4892
- - 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:2980
- - 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:4608
  - - 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:520
  - - 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:2520
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:3448
  - - 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:388
  - - 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:4412
  - - 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:2276
  - - 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:956
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:1436
    - - 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:1464
      - 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:4416

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:5076

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_tdukd53p.1h1.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tdukd53p.1h1.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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injector.exe

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

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powershell.exe.log

Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Size 2KB
SHA256 92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
MD5 968cb9309758126772781b83adb8a28f
SHA1 8da30e71accf186b2ba11da1797cf67f8f78b47c
SHA512 4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
MD5 SHA1 SHA512

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