glupteba | a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348

Analysis

max time kernel
150s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
21/04/2024, 16:25

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General

Target
a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Size 4.1MB
Sample240421-tw9rtafa52
SHA256 a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348
MD5 b47fdaf06def2d9fdef7b418061f2a82
SHA1 7c42df27d750c81e5ac7a41fbe4e03cd8e059272
SHA512 220ec67ad898b703357b6fc64aec02e1e950e3c0ee1dc9817e8af17eaa642a6c51194802a084c91bfbc6abb9905e626779af88fd441991262f6915c7769e9da3
SSDEEP 98304:8wAze/FNZMWTI4IerOgms7GjcZA7/RTa+EmUQAtQ:+S/DzMv1si4yTElQp
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 18 IoCs

resource	yara_rule
behavioral1/memory/516-2-0x00000000064B0000-0x0000000006D9B000-memory.dmp	family_glupteba
behavioral1/memory/2216-46-0x0000000006530000-0x0000000006E1B000-memory.dmp	family_glupteba
behavioral1/memory/516-74-0x00000000064B0000-0x0000000006D9B000-memory.dmp	family_glupteba
behavioral1/memory/516-101-0x0000000000400000-0x0000000004417000-memory.dmp	family_glupteba
behavioral1/memory/2216-151-0x0000000000400000-0x0000000004417000-memory.dmp	family_glupteba
behavioral1/memory/3996-250-0x0000000000400000-0x0000000004417000-memory.dmp	family_glupteba
behavioral1/memory/3996-252-0x0000000000400000-0x0000000004417000-memory.dmp	family_glupteba
behavioral1/memory/3996-262-0x0000000000400000-0x0000000004417000-memory.dmp	family_glupteba
behavioral1/memory/3996-265-0x0000000000400000-0x0000000004417000-memory.dmp	family_glupteba
behavioral1/memory/3996-268-0x0000000000400000-0x0000000004417000-memory.dmp	family_glupteba
behavioral1/memory/3996-271-0x0000000000400000-0x0000000004417000-memory.dmp	family_glupteba
behavioral1/memory/3996-274-0x0000000000400000-0x0000000004417000-memory.dmp	family_glupteba
behavioral1/memory/3996-277-0x0000000000400000-0x0000000004417000-memory.dmp	family_glupteba
behavioral1/memory/3996-280-0x0000000000400000-0x0000000004417000-memory.dmp	family_glupteba
behavioral1/memory/3996-283-0x0000000000400000-0x0000000004417000-memory.dmp	family_glupteba
behavioral1/memory/3996-286-0x0000000000400000-0x0000000004417000-memory.dmp	family_glupteba
behavioral1/memory/3996-289-0x0000000000400000-0x0000000004417000-memory.dmp	family_glupteba
behavioral1/memory/3996-292-0x0000000000400000-0x0000000004417000-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
4408	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
3996	csrss.exe
4536	injector.exe
4296	windefender.exe
4788	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0007000000023406-255.dat	upx
behavioral1/memory/4296-260-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral1/memory/4788-263-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral1/memory/4788-269-0x0000000000400000-0x00000000008DF000-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-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\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	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
File created	C:\Windows\rss\csrss.exe	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
File created	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\windefender.exe	csrss.exe

Launches sc.exe 1 IoCs

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

pid	Process
4132	sc.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
972	4808	WerFault.exe	88

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
3488	schtasks.exe
1368	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-931 = "Coordinated Universal Time"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-492 = "India Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-382 = "South Africa Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-571 = "China Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1862 = "Russia TZ 6 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-141 = "Canada Central Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1721 = "Libya Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-191 = "Mountain Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-732 = "Fiji Standard Time"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2751 = "Tomsk Daylight Time"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	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,-772 = "Montevideo Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-242 = "Samoa Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-631 = "Tokyo Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-342 = "Egypt Standard Time"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-962 = "Paraguay Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.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\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.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,-1021 = "Bangladesh Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-142 = "Canada Central Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-572 = "China Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-122 = "SA Pacific Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-932 = "Coordinated Universal Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-722 = "Central Pacific Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-911 = "Mauritius Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2062 = "North Korea Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-442 = "Arabian Standard Time"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-671 = "AUS Eastern Daylight Time"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2891 = "Sudan Daylight Time"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\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\26\52C64B7E\@tzres.dll,-1971 = "Belarus Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-251 = "Dateline Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1501 = "Turkey Daylight Time"	windefender.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4808	powershell.exe
4808	powershell.exe
516	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
516	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
2440	powershell.exe
2440	powershell.exe
2440	powershell.exe
2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
396	powershell.exe
396	powershell.exe
396	powershell.exe
4316	powershell.exe
4316	powershell.exe
4316	powershell.exe
4028	powershell.exe
4028	powershell.exe
4028	powershell.exe
3688	powershell.exe
3688	powershell.exe
3688	powershell.exe
2520	powershell.exe
2520	powershell.exe
2520	powershell.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
3996	csrss.exe
3996	csrss.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
3996	csrss.exe
3996	csrss.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
4536	injector.exe
3996	csrss.exe
3996	csrss.exe
4536	injector.exe
4536	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	4808	powershell.exe
Token: SeDebugPrivilege	516	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Token: SeImpersonatePrivilege	516	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
Token: SeDebugPrivilege	2440	powershell.exe
Token: SeDebugPrivilege	396	powershell.exe
Token: SeDebugPrivilege	4316	powershell.exe
Token: SeDebugPrivilege	4028	powershell.exe
Token: SeDebugPrivilege	3688	powershell.exe
Token: SeDebugPrivilege	2520	powershell.exe
Token: SeSystemEnvironmentPrivilege	3996	csrss.exe
Token: SeSecurityPrivilege	4132	sc.exe
Token: SeSecurityPrivilege	4132	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 516 wrote to memory of 4808	516	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe	88
PID 516 wrote to memory of 4808	516	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe	88
PID 516 wrote to memory of 4808	516	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe	88
PID 2216 wrote to memory of 2440	2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe	101
PID 2216 wrote to memory of 2440	2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe	101
PID 2216 wrote to memory of 2440	2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe	101
PID 2216 wrote to memory of 2100	2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe	104
PID 2216 wrote to memory of 2100	2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe	104
PID 2100 wrote to memory of 4408	2100	cmd.exe	106
PID 2100 wrote to memory of 4408	2100	cmd.exe	106
PID 2216 wrote to memory of 396	2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe	107
PID 2216 wrote to memory of 396	2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe	107
PID 2216 wrote to memory of 396	2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe	107
PID 2216 wrote to memory of 4316	2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe	110
PID 2216 wrote to memory of 4316	2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe	110
PID 2216 wrote to memory of 4316	2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe	110
PID 2216 wrote to memory of 3996	2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe	112
PID 2216 wrote to memory of 3996	2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe	112
PID 2216 wrote to memory of 3996	2216	a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe	112
PID 3996 wrote to memory of 4028	3996	csrss.exe	113
PID 3996 wrote to memory of 4028	3996	csrss.exe	113
PID 3996 wrote to memory of 4028	3996	csrss.exe	113
PID 3996 wrote to memory of 3688	3996	csrss.exe	119
PID 3996 wrote to memory of 3688	3996	csrss.exe	119
PID 3996 wrote to memory of 3688	3996	csrss.exe	119
PID 3996 wrote to memory of 2520	3996	csrss.exe	121
PID 3996 wrote to memory of 2520	3996	csrss.exe	121
PID 3996 wrote to memory of 2520	3996	csrss.exe	121
PID 3996 wrote to memory of 4536	3996	csrss.exe	123
PID 3996 wrote to memory of 4536	3996	csrss.exe	123
PID 4296 wrote to memory of 5060	4296	windefender.exe	131
PID 4296 wrote to memory of 5060	4296	windefender.exe	131
PID 4296 wrote to memory of 5060	4296	windefender.exe	131
PID 5060 wrote to memory of 4132	5060	cmd.exe	132
PID 5060 wrote to memory of 4132	5060	cmd.exe	132
PID 5060 wrote to memory of 4132	5060	cmd.exe	132

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\a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
"C:\Users\Admin\AppData\Local\Temp\a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:516
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4808
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4808 -s 2520
    3⤵
    - Program crash
    PID:972
- C:\Users\Admin\AppData\Local\Temp\a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.exe
  "C:\Users\Admin\AppData\Local\Temp\a5fa265584de70494e0f157f3d36af977629dede0d10cae96ff333712f4d6348.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:2216
- - 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\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:2100
  - - 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:4408
- - 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:396
- - 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:4316
- - 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:3996
  - - 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:4028
  - - 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:3488
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:1612
  - - 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:3688
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2520
  - - 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:4536
  - - 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:1368
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:4296
    - - 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:5060
      - 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:4132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4808 -ip 4808
1⤵
PID:3684

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4788

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_tc5lc3rw.gnr.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tc5lc3rw.gnr.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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injector.exe

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

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powershell.exe.log

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

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