glupteba | b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7

Analysis

max time kernel
149s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
18/04/2024, 12:46

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General

Target
b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Size 4.2MB
Sample240418-pzy29sde92
SHA256 b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7
MD5 58f97570bda8bdda50b4860e0f5ee9c3
SHA1 9372ec2e8a677a23f951a9dcfea4b9d950c08aac
SHA512 a72bc938fc7e59d81d365d5c65ce066d672a3ab5542668849ed92f5e7057f96dbfb1adc06aa3e217ec6c6f6e03c3ba7917527ae6edded213b34fa8b1e4626535
SSDEEP 98304:v+Aa2fy0ZnosWTV9iqGMS2x9Jaw4XzuCQ45SJR+t3gnx:v+AZfy0FoqWJ6Y5
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit upx

Malware Config

Signatures

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

Glupteba payload 19 IoCs

resource	yara_rule
behavioral2/memory/496-2-0x00000000052D0000-0x0000000005BBB000-memory.dmp	family_glupteba
behavioral2/memory/496-3-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/496-49-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/496-51-0x00000000052D0000-0x0000000005BBB000-memory.dmp	family_glupteba
behavioral2/memory/1440-53-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1440-115-0x0000000003450000-0x0000000003853000-memory.dmp	family_glupteba
behavioral2/memory/1440-127-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1440-147-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1496-240-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1496-254-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1496-255-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1496-257-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1496-259-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1496-262-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1496-264-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1496-265-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1496-267-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1496-269-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1496-272-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4216	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
1496	csrss.exe
1576	injector.exe
2412	windefender.exe
1628	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002a9f7-248.dat	upx
behavioral2/memory/2412-252-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/1628-256-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/1628-260-0x0000000000400000-0x00000000008DF000-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-1-5-21-801765966-3955847401-2235691403-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-801765966-3955847401-2235691403-1000\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 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	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\rss	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
File created	C:\Windows\rss\csrss.exe	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe

Launches sc.exe 1 IoCs

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

pid	Process
4992	sc.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3108	496	WerFault.exe	78
2928	1440	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
940	schtasks.exe
2836	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	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\26\52C64B7E\@tzres.dll,-352 = "FLE Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.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\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1861 = "Russia TZ 6 Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1022 = "Bangladesh Standard Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2941 = "Sao Tome Daylight Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-282 = "Central Europe Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1662 = "Bahia Standard Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1832 = "Russia TZ 2 Standard Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-52 = "Greenland Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2792 = "Novosibirsk Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1721 = "Libya Daylight Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-742 = "New Zealand Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-571 = "China Daylight Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-202 = "US Mountain Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	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\26\52C64B7E\@tzres.dll,-672 = "AUS Eastern Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2451 = "Saint Pierre Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-3051 = "Qyzylorda Daylight Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	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\26\52C64B7E\@tzres.dll,-392 = "Arab Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-442 = "Arabian Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1841 = "Russia TZ 4 Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1932 = "Russia TZ 11 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-632 = "Tokyo Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-384 = "Namibia Daylight Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	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\26\52C64B7E\@tzres.dll,-451 = "Caucasus Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-3141 = "South Sudan Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-162 = "Central Standard Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1862 = "Russia TZ 6 Standard Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2532 = "Chatham Islands Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-412 = "E. Africa Standard Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time"	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.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\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3988	powershell.exe
3988	powershell.exe
496	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
496	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
2144	powershell.exe
2144	powershell.exe
1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
1232	powershell.exe
1232	powershell.exe
1692	powershell.exe
1692	powershell.exe
2332	powershell.exe
2332	powershell.exe
1528	powershell.exe
1528	powershell.exe
2756	powershell.exe
2756	powershell.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1496	csrss.exe
1496	csrss.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1496	csrss.exe
1496	csrss.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1496	csrss.exe
1496	csrss.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe
1576	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	3988	powershell.exe
Token: SeDebugPrivilege	496	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Token: SeImpersonatePrivilege	496	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
Token: SeDebugPrivilege	2144	powershell.exe
Token: SeDebugPrivilege	1232	powershell.exe
Token: SeDebugPrivilege	1692	powershell.exe
Token: SeDebugPrivilege	2332	powershell.exe
Token: SeDebugPrivilege	1528	powershell.exe
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeSystemEnvironmentPrivilege	1496	csrss.exe
Token: SeSecurityPrivilege	4992	sc.exe
Token: SeSecurityPrivilege	4992	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 496 wrote to memory of 3988	496	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe	82
PID 496 wrote to memory of 3988	496	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe	82
PID 496 wrote to memory of 3988	496	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe	82
PID 1440 wrote to memory of 2144	1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe	90
PID 1440 wrote to memory of 2144	1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe	90
PID 1440 wrote to memory of 2144	1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe	90
PID 1440 wrote to memory of 4952	1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe	92
PID 1440 wrote to memory of 4952	1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe	92
PID 4952 wrote to memory of 4216	4952	cmd.exe	94
PID 4952 wrote to memory of 4216	4952	cmd.exe	94
PID 1440 wrote to memory of 1232	1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe	95
PID 1440 wrote to memory of 1232	1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe	95
PID 1440 wrote to memory of 1232	1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe	95
PID 1440 wrote to memory of 1692	1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe	97
PID 1440 wrote to memory of 1692	1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe	97
PID 1440 wrote to memory of 1692	1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe	97
PID 1440 wrote to memory of 1496	1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe	99
PID 1440 wrote to memory of 1496	1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe	99
PID 1440 wrote to memory of 1496	1440	b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe	99
PID 1496 wrote to memory of 2332	1496	csrss.exe	102
PID 1496 wrote to memory of 2332	1496	csrss.exe	102
PID 1496 wrote to memory of 2332	1496	csrss.exe	102
PID 1496 wrote to memory of 1528	1496	csrss.exe	107
PID 1496 wrote to memory of 1528	1496	csrss.exe	107
PID 1496 wrote to memory of 1528	1496	csrss.exe	107
PID 1496 wrote to memory of 2756	1496	csrss.exe	110
PID 1496 wrote to memory of 2756	1496	csrss.exe	110
PID 1496 wrote to memory of 2756	1496	csrss.exe	110
PID 1496 wrote to memory of 1576	1496	csrss.exe	112
PID 1496 wrote to memory of 1576	1496	csrss.exe	112
PID 2412 wrote to memory of 4368	2412	windefender.exe	118
PID 2412 wrote to memory of 4368	2412	windefender.exe	118
PID 2412 wrote to memory of 4368	2412	windefender.exe	118
PID 4368 wrote to memory of 4992	4368	cmd.exe	119
PID 4368 wrote to memory of 4992	4368	cmd.exe	119
PID 4368 wrote to memory of 4992	4368	cmd.exe	119

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\b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
"C:\Users\Admin\AppData\Local\Temp\b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:496
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3988
- C:\Users\Admin\AppData\Local\Temp\b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.exe
  "C:\Users\Admin\AppData\Local\Temp\b5a9d52fb85dfc18938b24312f1fa76101cb8bcad9de7c51c021350c0e93d2b7.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:1440
- - 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:2144
- - 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:4952
  - - 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:4216
- - 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:1232
- - 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:1692
- - 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:1496
  - - 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:2332
  - - 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:940
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:2588
  - - 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:1528
  - - 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:2756
  - - 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:1576
  - - 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:2836
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:2412
    - - 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:4368
      - 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:4992
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1440 -s 736
    3⤵
    - Program crash
    PID:2928
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 496 -s 844
  2⤵
  - Program crash
  PID:3108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 496 -ip 496
1⤵
PID:2588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1440 -ip 1440
1⤵
PID:3732

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1628

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_ezxbzayo.fc0.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ezxbzayo.fc0.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 e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9
MD5 ac4917a885cf6050b1a483e4bc4d2ea5
SHA1 b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f
SHA512 092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d
MD5 SHA1 SHA512

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