glupteba | 1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096

Analysis

max time kernel
149s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
16/05/2024, 17:49

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General

Target

1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Size

4.1MB
MD5

0366f0d71bcb6b15a8dc310635ec2435
SHA1

e3c53e619ded72c0eec7b88d01baedeac47a5ed8
SHA256

1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096
SHA512

f12eddb4b6ac5c056c2052a453abe364369bcb85a24fabd8583f2837289bb532d5855d00bcc36223a6111513d30032abc7775d3806cfc5729a487f15b1f7d8bd
SSDEEP

98304:Q557or8YMdWV8xcrChUIDCoHczW4WQrxCgsiGsm1N9Zshd41TTimZ:Q5w86GcrCCoczCJiGXN9ZshdAimZ

Score

10^/10

glupteba discovery dropper evasion execution loader persistence rootkit

Malware Config

Signatures

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

Glupteba payload 18 IoCs

resource	yara_rule
behavioral1/memory/1544-2-0x0000000002E80000-0x000000000376B000-memory.dmp	family_glupteba
behavioral1/memory/1544-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/1544-57-0x0000000002E80000-0x000000000376B000-memory.dmp	family_glupteba
behavioral1/memory/1544-82-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/1208-112-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4180-192-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4180-194-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4180-196-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4180-199-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4180-200-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4180-202-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4180-204-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4180-207-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4180-208-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4180-210-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4180-212-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4180-215-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral1/memory/4180-216-0x0000000000400000-0x0000000000D1C000-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
2828	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
4180	csrss.exe
1896	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-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\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 6 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

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	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
File created	C:\Windows\rss\csrss.exe	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3304	powershell.exe
3732	powershell.exe
5060	powershell.exe
3864	powershell.exe
2096	powershell.exe
3224	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
1496	schtasks.exe
3768	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-352 = "FLE Standard Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.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\C:\Windows\system32\,@tzres.dll,-2001 = "Cabo Verde Daylight Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-81 = "Atlantic Daylight Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2772 = "Omsk Standard Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.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,-12 = "Azores Standard Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1911 = "Russia TZ 10 Daylight Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.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\Root\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.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,-2162 = "Altai Standard Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	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,-105 = "Central Brazilian Standard Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2791 = "Novosibirsk Daylight Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-562 = "SE Asia Standard Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1971 = "Belarus Daylight Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2572 = "Turks and Caicos Standard Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.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 (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-41 = "E. South America Daylight Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time"	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3864	powershell.exe
3864	powershell.exe
1544	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
1544	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
2096	powershell.exe
2096	powershell.exe
1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
4892	powershell.exe
4892	powershell.exe
3304	powershell.exe
3304	powershell.exe
3732	powershell.exe
3732	powershell.exe
5060	powershell.exe
5060	powershell.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
4180	csrss.exe
4180	csrss.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
4180	csrss.exe
4180	csrss.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe
1896	injector.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	3864	powershell.exe
Token: SeDebugPrivilege	1544	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Token: SeImpersonatePrivilege	1544	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
Token: SeDebugPrivilege	2096	powershell.exe
Token: SeDebugPrivilege	4892	powershell.exe
Token: SeDebugPrivilege	3304	powershell.exe
Token: SeDebugPrivilege	3732	powershell.exe
Token: SeDebugPrivilege	5060	powershell.exe
Token: SeSystemEnvironmentPrivilege	4180	csrss.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 3864	1544	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe	87
PID 1544 wrote to memory of 3864	1544	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe	87
PID 1544 wrote to memory of 3864	1544	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe	87
PID 1208 wrote to memory of 2096	1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe	98
PID 1208 wrote to memory of 2096	1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe	98
PID 1208 wrote to memory of 2096	1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe	98
PID 1208 wrote to memory of 2616	1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe	101
PID 1208 wrote to memory of 2616	1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe	101
PID 2616 wrote to memory of 2828	2616	cmd.exe	103
PID 2616 wrote to memory of 2828	2616	cmd.exe	103
PID 1208 wrote to memory of 3224	1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe	104
PID 1208 wrote to memory of 3224	1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe	104
PID 1208 wrote to memory of 3224	1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe	104
PID 1208 wrote to memory of 4892	1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe	106
PID 1208 wrote to memory of 4892	1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe	106
PID 1208 wrote to memory of 4892	1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe	106
PID 1208 wrote to memory of 4180	1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe	108
PID 1208 wrote to memory of 4180	1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe	108
PID 1208 wrote to memory of 4180	1208	1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe	108
PID 4180 wrote to memory of 3304	4180	csrss.exe	109
PID 4180 wrote to memory of 3304	4180	csrss.exe	109
PID 4180 wrote to memory of 3304	4180	csrss.exe	109
PID 4180 wrote to memory of 3732	4180	csrss.exe	115
PID 4180 wrote to memory of 3732	4180	csrss.exe	115
PID 4180 wrote to memory of 3732	4180	csrss.exe	115
PID 4180 wrote to memory of 5060	4180	csrss.exe	117
PID 4180 wrote to memory of 5060	4180	csrss.exe	117
PID 4180 wrote to memory of 5060	4180	csrss.exe	117
PID 4180 wrote to memory of 1896	4180	csrss.exe	119
PID 4180 wrote to memory of 1896	4180	csrss.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\1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
"C:\Users\Admin\AppData\Local\Temp\1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1544
- 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:3864
- C:\Users\Admin\AppData\Local\Temp\1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.exe
  "C:\Users\Admin\AppData\Local\Temp\1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096.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:1208
- - 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:2096
- - 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:2616
  - - 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:2828
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Modifies data under HKEY_USERS
    PID:3224
- - 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\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:4180
  - - 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:3304
  - - 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:1496
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:4824
  - - 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:3732
  - - 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:5060
  - - 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:1896
  - - 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:3768

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

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_c5cmevo1.skw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe

Filesize
281KB

MD5
d98e33b66343e7c96158444127a117f6

SHA1
bb716c5509a2bf345c6c1152f6e3e1452d39d50d

SHA256
5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

SHA512
705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

Filesize
19KB

MD5
f881ab32f8339c17350a17c6f2482abe

SHA1
0eef4236c9575eb19a980f434a347cd48049607d

SHA256
8a2b212c55b8e4d1aff2eb79bd2900ba6f1e59601d7fdb6000b1a20c8fa13e6c

SHA512
91f136873a334814f5844b88ceda21c111389e429601387aa8a638d4c73b7b940eec988c77d4e6eab86ba42f63c0569988a3bcc1ad71c82a09c450ee0aee7ed1

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

Filesize
19KB

MD5
47d01339be1df753a03cabf46a62a3ac

SHA1
ff655a95fea30b62712fa61d84711f687c286003

SHA256
f938e21b993f2b933b70db60b608e938540372ca794ad57994dd30ac44569e6e

SHA512
52b2e3b6ef4f022e0f4adc4f6d989260b57e718cb3b82df6980970ddcd0ea687f4fe839c0580c7c0446a6c998fba1a88372d6f68b55bea44c5b58a8f6b7ac1f3

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

Filesize
19KB

MD5
ff9a0dd0be6b93747809791fb60eec3e

SHA1
609ec09adaaaf0191eee472ce3b28139cb32802c

SHA256
cccf1f6c4b2f7be7d8e3f444e29059465f909e98fce2e109fd72132ec7702441

SHA512
76e3ee7b78757c844d2b5eae4558a6a9db959a57f6f7bd7d559f9f1795c354ca2dc545cd8cfeb5e0e79da5cef1f26f1ee23689d95769828d232de4c4287cf9d9

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

Filesize
19KB

MD5
7cf5f789ad2548e073190d5d0fc34b08

SHA1
316a23718dda91dbd95f854e6378812d02f6fe94

SHA256
5eb08abe21552381736a956a00ae8c1761ee6d85561fd4ecc8540f3a38e3ea58

SHA512
441403dca15b85a67d038d1d4b105960f6090d04c7bfd569ace8f0b809db821bd3396e2cbf320f9439cd15a012a4c266e9e48b73b5f0bd161ffc0fb39fc7a0dc

Download Submit
C:\Windows\rss\csrss.exe

Filesize
4.1MB

MD5
0366f0d71bcb6b15a8dc310635ec2435

SHA1
e3c53e619ded72c0eec7b88d01baedeac47a5ed8

SHA256
1fac81c43a34dfe91d46277cb2522cb1b0cd335741926a20f8681babf54cf096

SHA512
f12eddb4b6ac5c056c2052a453abe364369bcb85a24fabd8583f2837289bb532d5855d00bcc36223a6111513d30032abc7775d3806cfc5729a487f15b1f7d8bd

Download Submit
memory/1208-112-0x0000000000400000-0x0000000000D1C000-memory.dmp

Filesize
9.1MB

Download
memory/1208-55-0x0000000002950000-0x0000000002D54000-memory.dmp

Filesize
4.0MB

Download
memory/1544-82-0x0000000000400000-0x0000000000D1C000-memory.dmp

Filesize
9.1MB

Download
memory/1544-1-0x0000000002A70000-0x0000000002E77000-memory.dmp

Filesize
4.0MB

Download
memory/1544-56-0x0000000002A70000-0x0000000002E77000-memory.dmp

Filesize
4.0MB

Download
memory/1544-3-0x0000000000400000-0x0000000000D1C000-memory.dmp

Filesize
9.1MB

Download
memory/1544-2-0x0000000002E80000-0x000000000376B000-memory.dmp

Filesize
8.9MB

Download
memory/1544-57-0x0000000002E80000-0x000000000376B000-memory.dmp

Filesize
8.9MB

Download
memory/2096-81-0x0000000006FD0000-0x0000000006FE4000-memory.dmp

Filesize
80KB

Download
memory/2096-80-0x0000000006F80000-0x0000000006F91000-memory.dmp

Filesize
68KB

Download
memory/2096-79-0x0000000006C70000-0x0000000006D13000-memory.dmp

Filesize
652KB

Download
memory/2096-69-0x0000000070D50000-0x00000000710A4000-memory.dmp

Filesize
3.3MB

Download
memory/2096-68-0x00000000705D0000-0x000000007061C000-memory.dmp

Filesize
304KB

Download
memory/2096-58-0x0000000005440000-0x0000000005794000-memory.dmp

Filesize
3.3MB

Download
memory/3224-85-0x0000000000FE0000-0x0000000001004000-memory.dmp

Filesize
144KB

Download
memory/3304-125-0x00000000705D0000-0x000000007061C000-memory.dmp

Filesize
304KB

Download
memory/3304-126-0x0000000070750000-0x0000000070AA4000-memory.dmp

Filesize
3.3MB

Download
memory/3732-150-0x00000000704F0000-0x000000007053C000-memory.dmp

Filesize
304KB

Download
memory/3732-147-0x0000000005BE0000-0x0000000005F34000-memory.dmp

Filesize
3.3MB

Download
memory/3732-163-0x00000000060C0000-0x00000000060D4000-memory.dmp

Filesize
80KB

Download
memory/3732-162-0x0000000006080000-0x0000000006091000-memory.dmp

Filesize
68KB

Download
memory/3732-161-0x0000000007500000-0x00000000075A3000-memory.dmp

Filesize
652KB

Download
memory/3732-151-0x0000000070C80000-0x0000000070FD4000-memory.dmp

Filesize
3.3MB

Download
memory/3732-149-0x0000000006310000-0x000000000635C000-memory.dmp

Filesize
304KB

Download
memory/3864-9-0x0000000004E30000-0x0000000004E52000-memory.dmp

Filesize
136KB

Download
memory/3864-6-0x0000000074730000-0x0000000074EE0000-memory.dmp

Filesize
7.7MB

Download
memory/3864-44-0x00000000074B0000-0x00000000074BA000-memory.dmp

Filesize
40KB

Download
memory/3864-43-0x0000000074730000-0x0000000074EE0000-memory.dmp

Filesize
7.7MB

Download
memory/3864-41-0x00000000073A0000-0x00000000073BE000-memory.dmp

Filesize
120KB

Download
memory/3864-42-0x00000000073C0000-0x0000000007463000-memory.dmp

Filesize
652KB

Download
memory/3864-28-0x0000000007360000-0x0000000007392000-memory.dmp

Filesize
200KB

Download
memory/3864-29-0x00000000705D0000-0x000000007061C000-memory.dmp

Filesize
304KB

Download
memory/3864-30-0x0000000074730000-0x0000000074EE0000-memory.dmp

Filesize
7.7MB

Download
memory/3864-27-0x00000000071B0000-0x00000000071CA000-memory.dmp

Filesize
104KB

Download
memory/3864-26-0x0000000007810000-0x0000000007E8A000-memory.dmp

Filesize
6.5MB

Download
memory/3864-25-0x0000000006F10000-0x0000000006F86000-memory.dmp

Filesize
472KB

Download
memory/3864-24-0x0000000006350000-0x0000000006394000-memory.dmp

Filesize
272KB

Download
memory/3864-23-0x0000000005E90000-0x0000000005EDC000-memory.dmp

Filesize
304KB

Download
memory/3864-22-0x0000000005DF0000-0x0000000005E0E000-memory.dmp

Filesize
120KB

Download
memory/3864-4-0x000000007473E000-0x000000007473F000-memory.dmp

Filesize
4KB

Download
memory/3864-5-0x0000000002500000-0x0000000002536000-memory.dmp

Filesize
216KB

Download
memory/3864-21-0x0000000005920000-0x0000000005C74000-memory.dmp

Filesize
3.3MB

Download
memory/3864-20-0x00000000057A0000-0x0000000005806000-memory.dmp

Filesize
408KB

Download
memory/3864-10-0x0000000004FD0000-0x0000000005036000-memory.dmp

Filesize
408KB

Download
memory/3864-31-0x0000000070750000-0x0000000070AA4000-memory.dmp

Filesize
3.3MB

Download
memory/3864-8-0x0000000074730000-0x0000000074EE0000-memory.dmp

Filesize
7.7MB

Download
memory/3864-50-0x0000000007550000-0x0000000007558000-memory.dmp

Filesize
32KB

Download
memory/3864-53-0x0000000074730000-0x0000000074EE0000-memory.dmp

Filesize
7.7MB

Download
memory/3864-49-0x0000000007610000-0x000000000762A000-memory.dmp

Filesize
104KB

Download
memory/3864-7-0x0000000005080000-0x00000000056A8000-memory.dmp

Filesize
6.2MB

Download
memory/3864-48-0x0000000007520000-0x0000000007534000-memory.dmp

Filesize
80KB

Download
memory/3864-47-0x0000000007510000-0x000000000751E000-memory.dmp

Filesize
56KB

Download
memory/3864-46-0x00000000074D0000-0x00000000074E1000-memory.dmp

Filesize
68KB

Download
memory/3864-45-0x0000000007570000-0x0000000007606000-memory.dmp

Filesize
600KB

Download
memory/4180-200-0x0000000000400000-0x0000000000D1C000-memory.dmp

Filesize
9.1MB

Download
memory/4180-202-0x0000000000400000-0x0000000000D1C000-memory.dmp

Filesize
9.1MB

Download
memory/4180-216-0x0000000000400000-0x0000000000D1C000-memory.dmp

Filesize
9.1MB

Download
memory/4180-215-0x0000000000400000-0x0000000000D1C000-memory.dmp

Filesize
9.1MB

Download
memory/4180-192-0x0000000000400000-0x0000000000D1C000-memory.dmp

Filesize
9.1MB

Download
memory/4180-194-0x0000000000400000-0x0000000000D1C000-memory.dmp

Filesize
9.1MB

Download
memory/4180-196-0x0000000000400000-0x0000000000D1C000-memory.dmp

Filesize
9.1MB

Download
memory/4180-199-0x0000000000400000-0x0000000000D1C000-memory.dmp

Filesize
9.1MB

Download
memory/4180-212-0x0000000000400000-0x0000000000D1C000-memory.dmp

Filesize
9.1MB

Download
memory/4180-204-0x0000000000400000-0x0000000000D1C000-memory.dmp

Filesize
9.1MB

Download
memory/4180-210-0x0000000000400000-0x0000000000D1C000-memory.dmp

Filesize
9.1MB

Download
memory/4180-207-0x0000000000400000-0x0000000000D1C000-memory.dmp

Filesize
9.1MB

Download
memory/4180-208-0x0000000000400000-0x0000000000D1C000-memory.dmp

Filesize
9.1MB

Download
memory/4892-98-0x0000000070D50000-0x00000000710A4000-memory.dmp

Filesize
3.3MB

Download
memory/4892-97-0x00000000705D0000-0x000000007061C000-memory.dmp

Filesize
304KB

Download
memory/5060-175-0x00000000704F0000-0x000000007053C000-memory.dmp

Filesize
304KB

Download
memory/5060-176-0x0000000070C80000-0x0000000070FD4000-memory.dmp

Filesize
3.3MB

Download