glupteba | 8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
30/05/2023, 05:09

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General

Target

8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Size

4.2MB
MD5

a74f977a76a84e9abe226d37060a60ff
SHA1

d0fdd076ee5b88112d0c5a9f599b4680bf391c55
SHA256

8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965
SHA512

26e517452636bbb3ae20187ccf52b9d628c8771b7f7a8459d53684a5b57007677708844eeccd666ea3dabf538f0cc35932d4b3ef07701eba34b08f25122c1854
SSDEEP

98304:+EetIp/wDrYhBLw7jCPSQSbSuKLRXxaJCNcYPEKwlzgxt5Y/LrznN5YT4:Es/cr2AKZuTKNxaKcYpLxEz7

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit

Malware Config

Signatures

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

Glupteba payload 16 IoCs

resource	yara_rule
behavioral1/memory/2256-134-0x0000000003110000-0x00000000039FB000-memory.dmp	family_glupteba
behavioral1/memory/2256-173-0x0000000000400000-0x0000000000D1B000-memory.dmp	family_glupteba
behavioral1/memory/2256-180-0x0000000000400000-0x0000000000D1B000-memory.dmp	family_glupteba
behavioral1/memory/4752-218-0x0000000000400000-0x0000000000D1B000-memory.dmp	family_glupteba
behavioral1/memory/4752-264-0x0000000000400000-0x0000000000D1B000-memory.dmp	family_glupteba
behavioral1/memory/3564-317-0x0000000000400000-0x0000000000D1B000-memory.dmp	family_glupteba
behavioral1/memory/3564-350-0x0000000000400000-0x0000000000D1B000-memory.dmp	family_glupteba
behavioral1/memory/3564-351-0x0000000000400000-0x0000000000D1B000-memory.dmp	family_glupteba
behavioral1/memory/3564-352-0x0000000000400000-0x0000000000D1B000-memory.dmp	family_glupteba
behavioral1/memory/3564-353-0x0000000000400000-0x0000000000D1B000-memory.dmp	family_glupteba
behavioral1/memory/3564-354-0x0000000000400000-0x0000000000D1B000-memory.dmp	family_glupteba
behavioral1/memory/3564-355-0x0000000000400000-0x0000000000D1B000-memory.dmp	family_glupteba
behavioral1/memory/3564-356-0x0000000000400000-0x0000000000D1B000-memory.dmp	family_glupteba
behavioral1/memory/3564-357-0x0000000000400000-0x0000000000D1B000-memory.dmp	family_glupteba
behavioral1/memory/3564-358-0x0000000000400000-0x0000000000D1B000-memory.dmp	family_glupteba
behavioral1/memory/3564-359-0x0000000000400000-0x0000000000D1B000-memory.dmp	family_glupteba

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
2984	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
3564	csrss.exe
4912	injector.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	csrss.exe

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

Query Registry
T1012

Manipulates WinMonFS driver. 1 IoCs

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

rootkit evasion

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

Drops file in System32 directory 7 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\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
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	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
File created	C:\Windows\rss\csrss.exe	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3696	2256	WerFault.exe	83

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

T1053

pid	Process
3760	schtasks.exe
4384	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2792 = "Novosibirsk Standard Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1831 = "Russia TZ 2 Daylight Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-51 = "Greenland Daylight Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-742 = "New Zealand Standard Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1911 = "Russia TZ 10 Daylight Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.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\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3051 = "Qyzylorda Daylight Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	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\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-221 = "Alaskan Daylight Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-631 = "Tokyo Daylight Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	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\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2752 = "Tomsk Standard Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-442 = "Arabian Standard Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2451 = "Saint Pierre Daylight Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-932 = "Coordinated Universal Time"	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4412	powershell.exe
4412	powershell.exe
2256	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
2256	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
3148	powershell.exe
3148	powershell.exe
4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
2440	powershell.exe
2440	powershell.exe
3092	powershell.exe
3092	powershell.exe
1944	powershell.exe
1944	powershell.exe
3088	powershell.exe
3088	powershell.exe
5040	powershell.exe
5040	powershell.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
3564	csrss.exe
3564	csrss.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
3564	csrss.exe
3564	csrss.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe
4912	injector.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	4412	powershell.exe
Token: SeDebugPrivilege	2256	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Token: SeImpersonatePrivilege	2256	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
Token: SeDebugPrivilege	3148	powershell.exe
Token: SeDebugPrivilege	2440	powershell.exe
Token: SeDebugPrivilege	3092	powershell.exe
Token: SeDebugPrivilege	1944	powershell.exe
Token: SeDebugPrivilege	3088	powershell.exe
Token: SeDebugPrivilege	5040	powershell.exe
Token: SeSystemEnvironmentPrivilege	3564	csrss.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 4412	2256	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe	84
PID 2256 wrote to memory of 4412	2256	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe	84
PID 2256 wrote to memory of 4412	2256	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe	84
PID 4752 wrote to memory of 3148	4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe	98
PID 4752 wrote to memory of 3148	4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe	98
PID 4752 wrote to memory of 3148	4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe	98
PID 4752 wrote to memory of 1308	4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe	100
PID 4752 wrote to memory of 1308	4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe	100
PID 1308 wrote to memory of 2984	1308	cmd.exe	102
PID 1308 wrote to memory of 2984	1308	cmd.exe	102
PID 4752 wrote to memory of 2440	4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe	103
PID 4752 wrote to memory of 2440	4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe	103
PID 4752 wrote to memory of 2440	4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe	103
PID 4752 wrote to memory of 3092	4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe	105
PID 4752 wrote to memory of 3092	4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe	105
PID 4752 wrote to memory of 3092	4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe	105
PID 4752 wrote to memory of 3564	4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe	108
PID 4752 wrote to memory of 3564	4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe	108
PID 4752 wrote to memory of 3564	4752	8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe	108
PID 3564 wrote to memory of 1944	3564	csrss.exe	109
PID 3564 wrote to memory of 1944	3564	csrss.exe	109
PID 3564 wrote to memory of 1944	3564	csrss.exe	109
PID 3564 wrote to memory of 3088	3564	csrss.exe	114
PID 3564 wrote to memory of 3088	3564	csrss.exe	114
PID 3564 wrote to memory of 3088	3564	csrss.exe	114
PID 3564 wrote to memory of 5040	3564	csrss.exe	117
PID 3564 wrote to memory of 5040	3564	csrss.exe	117
PID 3564 wrote to memory of 5040	3564	csrss.exe	117
PID 3564 wrote to memory of 4912	3564	csrss.exe	119
PID 3564 wrote to memory of 4912	3564	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\8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
"C:\Users\Admin\AppData\Local\Temp\8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2256
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4412
- C:\Users\Admin\AppData\Local\Temp\8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.exe
  "C:\Users\Admin\AppData\Local\Temp\8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965.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:4752
- - 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:3148
- - 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:1308
  - - 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:2984
- - 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:2440
- - 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:3092
- - 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:3564
  - - 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:1944
  - - 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:3760
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:2572
  - - 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:3088
  - - 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:5040
  - - 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:4912
  - - 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:4384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 872
  2⤵
  - Program crash
  PID:3696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2256 -ip 2256
1⤵
PID:3844

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

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_bgy343at.502.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:\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
65703d1df8ec1cc077bed9b777e489af

SHA1
04b21612c1f14fe09fb6272683d70a009997b65f

SHA256
b5678194b81b838b39cbce14a817be8ea277c0a51c3adaccfa10c3e8c0b3c60c

SHA512
d09badb3105b9f1a9dfc71cb13c92f81a58a5f2dce8048f4cb4c3785a02234eaae07e5e8b18c61505aa25b2de91e77be5d90a73955b6a09bd442c851563ca3e7

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

Filesize
19KB

MD5
d756bf6f32752c1f5fcf85c1b30d64ae

SHA1
d5a863643a640cb667c9433f720da5b40fb21e43

SHA256
17d60096b174ad6f049979e7f527f443218d4ce6ccdf61d3e249baa6529a265a

SHA512
2fb7f92191930520e7710aa600d0e7b252c901126530684dc2f093984967f67babad23d95ffb5c8aa89a9f9537102622eb337199dc45376cbe33fdc9e211978e

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

Filesize
19KB

MD5
9c1369426d65579cf5a6552892849268

SHA1
77dc2c6ae32625f836868093b7f04e84ac4dc73f

SHA256
154c775b9a4cd0d4dd9941abc04f81fce57c9d07bcbf84572286c901779a9988

SHA512
230fa463d673633fecf35add7cb3cf001ad0a46fb0605b2f8ec4d130c3747c753bb398e9c37d09d1d857ebc0c5417bd1eb540d53496552e572315cdc09bd6c8b

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

Filesize
19KB

MD5
f61cd181778da0deb9e3385d53eb3aaa

SHA1
87561e5f1d4d5656419817e5da00428783357c39

SHA256
72ea7ada5cd91818c016c57a372fe17a001f5f1b2e2b70367af346bfd14de80b

SHA512
3ec0d88be7f9ad0c46c3acafa0514c09e465200490109adebeb7264ed6677c5e031476e4be45e2fcb190c9614c2d248d0d8a45b246eede6c881f34107fe6ab55

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

Filesize
19KB

MD5
0614ac9a74a533dfa0c93b4388a346d3

SHA1
b24e548802736bf3fdb639316e9fff34b80a3bc3

SHA256
bd6fd1450511e5f4b1ab57556dc078368574f4430e0959929f367bd5fb22c8bb

SHA512
2820319cc0a98e05a1c1cea8cff0f9add288e9e24a5d0b43b4e149836492cb2006db017e554af39d6e90f81fd2c3e858662918057d3ceb4b386eed81dba42fb4

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

Filesize
4.2MB

MD5
a74f977a76a84e9abe226d37060a60ff

SHA1
d0fdd076ee5b88112d0c5a9f599b4680bf391c55

SHA256
8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965

SHA512
26e517452636bbb3ae20187ccf52b9d628c8771b7f7a8459d53684a5b57007677708844eeccd666ea3dabf538f0cc35932d4b3ef07701eba34b08f25122c1854

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

Filesize
4.2MB

MD5
a74f977a76a84e9abe226d37060a60ff

SHA1
d0fdd076ee5b88112d0c5a9f599b4680bf391c55

SHA256
8b47875c3610c14308db0bbd7028fada1f511d419255887ddcfc693334070965

SHA512
26e517452636bbb3ae20187ccf52b9d628c8771b7f7a8459d53684a5b57007677708844eeccd666ea3dabf538f0cc35932d4b3ef07701eba34b08f25122c1854

Download Submit
memory/1944-277-0x0000000004850000-0x0000000004860000-memory.dmp

Filesize
64KB

Download
memory/1944-278-0x0000000004850000-0x0000000004860000-memory.dmp

Filesize
64KB

Download
memory/1944-279-0x0000000070590000-0x00000000705DC000-memory.dmp

Filesize
304KB

Download
memory/1944-280-0x0000000070D30000-0x0000000071084000-memory.dmp

Filesize
3.3MB

Download
memory/1944-291-0x000000007F070000-0x000000007F080000-memory.dmp

Filesize
64KB

Download
memory/1944-290-0x0000000004850000-0x0000000004860000-memory.dmp

Filesize
64KB

Download
memory/2256-173-0x0000000000400000-0x0000000000D1B000-memory.dmp

Filesize
9.1MB

Download
memory/2256-134-0x0000000003110000-0x00000000039FB000-memory.dmp

Filesize
8.9MB

Download
memory/2256-180-0x0000000000400000-0x0000000000D1B000-memory.dmp

Filesize
9.1MB

Download
memory/2440-223-0x0000000070DF0000-0x0000000071144000-memory.dmp

Filesize
3.3MB

Download
memory/2440-220-0x00000000051F0000-0x0000000005200000-memory.dmp

Filesize
64KB

Download
memory/2440-221-0x00000000051F0000-0x0000000005200000-memory.dmp

Filesize
64KB

Download
memory/2440-219-0x00000000051F0000-0x0000000005200000-memory.dmp

Filesize
64KB

Download
memory/2440-222-0x0000000070630000-0x000000007067C000-memory.dmp

Filesize
304KB

Download
memory/2440-233-0x000000007F370000-0x000000007F380000-memory.dmp

Filesize
64KB

Download
memory/3088-307-0x0000000070630000-0x0000000070984000-memory.dmp

Filesize
3.3MB

Download
memory/3088-303-0x0000000003050000-0x0000000003060000-memory.dmp

Filesize
64KB

Download
memory/3088-306-0x0000000003050000-0x0000000003060000-memory.dmp

Filesize
64KB

Download
memory/3088-305-0x00000000704B0000-0x00000000704FC000-memory.dmp

Filesize
304KB

Download
memory/3088-304-0x0000000003050000-0x0000000003060000-memory.dmp

Filesize
64KB

Download
memory/3092-249-0x0000000070DD0000-0x0000000071124000-memory.dmp

Filesize
3.3MB

Download
memory/3092-259-0x000000007F3A0000-0x000000007F3B0000-memory.dmp

Filesize
64KB

Download
memory/3092-245-0x00000000050D0000-0x00000000050E0000-memory.dmp

Filesize
64KB

Download
memory/3092-248-0x0000000070630000-0x000000007067C000-memory.dmp

Filesize
304KB

Download
memory/3092-246-0x00000000050D0000-0x00000000050E0000-memory.dmp

Filesize
64KB

Download
memory/3092-247-0x00000000050D0000-0x00000000050E0000-memory.dmp

Filesize
64KB

Download
memory/3148-204-0x000000007FAD0000-0x000000007FAE0000-memory.dmp

Filesize
64KB

Download
memory/3148-181-0x0000000004900000-0x0000000004910000-memory.dmp

Filesize
64KB

Download
memory/3148-203-0x0000000004900000-0x0000000004910000-memory.dmp

Filesize
64KB

Download
memory/3148-193-0x0000000070DF0000-0x0000000071144000-memory.dmp

Filesize
3.3MB

Download
memory/3148-192-0x0000000070630000-0x000000007067C000-memory.dmp

Filesize
304KB

Download
memory/3148-182-0x0000000004900000-0x0000000004910000-memory.dmp

Filesize
64KB

Download
memory/3564-359-0x0000000000400000-0x0000000000D1B000-memory.dmp

Filesize
9.1MB

Download
memory/3564-350-0x0000000000400000-0x0000000000D1B000-memory.dmp

Filesize
9.1MB

Download
memory/3564-351-0x0000000000400000-0x0000000000D1B000-memory.dmp

Filesize
9.1MB

Download
memory/3564-352-0x0000000000400000-0x0000000000D1B000-memory.dmp

Filesize
9.1MB

Download
memory/3564-353-0x0000000000400000-0x0000000000D1B000-memory.dmp

Filesize
9.1MB

Download
memory/3564-354-0x0000000000400000-0x0000000000D1B000-memory.dmp

Filesize
9.1MB

Download
memory/3564-317-0x0000000000400000-0x0000000000D1B000-memory.dmp

Filesize
9.1MB

Download
memory/3564-355-0x0000000000400000-0x0000000000D1B000-memory.dmp

Filesize
9.1MB

Download
memory/3564-356-0x0000000000400000-0x0000000000D1B000-memory.dmp

Filesize
9.1MB

Download
memory/3564-357-0x0000000000400000-0x0000000000D1B000-memory.dmp

Filesize
9.1MB

Download
memory/3564-358-0x0000000000400000-0x0000000000D1B000-memory.dmp

Filesize
9.1MB

Download
memory/4412-152-0x0000000006330000-0x0000000006374000-memory.dmp

Filesize
272KB

Download
memory/4412-159-0x00000000706B0000-0x0000000070A04000-memory.dmp

Filesize
3.3MB

Download
memory/4412-151-0x0000000005E40000-0x0000000005E5E000-memory.dmp

Filesize
120KB

Download
memory/4412-143-0x0000000005720000-0x0000000005786000-memory.dmp

Filesize
408KB

Download
memory/4412-140-0x0000000005000000-0x0000000005066000-memory.dmp

Filesize
408KB

Download
memory/4412-139-0x0000000002920000-0x0000000002930000-memory.dmp

Filesize
64KB

Download
memory/4412-155-0x0000000007860000-0x0000000007EDA000-memory.dmp

Filesize
6.5MB

Download
memory/4412-154-0x0000000002920000-0x0000000002930000-memory.dmp

Filesize
64KB

Download
memory/4412-156-0x0000000007200000-0x000000000721A000-memory.dmp

Filesize
104KB

Download
memory/4412-137-0x0000000004F60000-0x0000000004F82000-memory.dmp

Filesize
136KB

Download
memory/4412-176-0x0000000007590000-0x0000000007598000-memory.dmp

Filesize
32KB

Download
memory/4412-157-0x00000000073B0000-0x00000000073E2000-memory.dmp

Filesize
200KB

Download
memory/4412-138-0x0000000002920000-0x0000000002930000-memory.dmp

Filesize
64KB

Download
memory/4412-175-0x0000000007640000-0x000000000765A000-memory.dmp

Filesize
104KB

Download
memory/4412-174-0x0000000007550000-0x000000000755E000-memory.dmp

Filesize
56KB

Download
memory/4412-172-0x00000000075A0000-0x0000000007636000-memory.dmp

Filesize
600KB

Download
memory/4412-171-0x00000000074E0000-0x00000000074EA000-memory.dmp

Filesize
40KB

Download
memory/4412-170-0x0000000007390000-0x00000000073AE000-memory.dmp

Filesize
120KB

Download
memory/4412-168-0x000000007F170000-0x000000007F180000-memory.dmp

Filesize
64KB

Download
memory/4412-136-0x0000000005080000-0x00000000056A8000-memory.dmp

Filesize
6.2MB

Download
memory/4412-135-0x0000000002850000-0x0000000002886000-memory.dmp

Filesize
216KB

Download
memory/4412-158-0x0000000070530000-0x000000007057C000-memory.dmp

Filesize
304KB

Download
memory/4412-153-0x0000000007160000-0x00000000071D6000-memory.dmp

Filesize
472KB

Download
memory/4752-218-0x0000000000400000-0x0000000000D1B000-memory.dmp

Filesize
9.1MB

Download
memory/4752-264-0x0000000000400000-0x0000000000D1B000-memory.dmp

Filesize
9.1MB

Download
memory/5040-332-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

Filesize
64KB

Download
memory/5040-333-0x000000007F980000-0x000000007F990000-memory.dmp

Filesize
64KB

Download
memory/5040-334-0x0000000070630000-0x0000000070984000-memory.dmp

Filesize
3.3MB

Download
memory/5040-331-0x00000000704B0000-0x00000000704FC000-memory.dmp

Filesize
304KB

Download
memory/5040-329-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

Filesize
64KB

Download
memory/5040-330-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

Filesize
64KB

Download