glupteba | 8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119

Analysis

max time kernel
149s
max time network
147s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
19/05/2024, 14:06

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General

Target
8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Size 4.1MB
Sample240519-revkfsbc8z
SHA256 8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119
MD5 597885933d99940939f031724e2d5000
SHA1 157aa1d0d301f6db6651b14b8543208fea0caf5d
SHA512 0ddd0cf3791e4d9d9ebc7ef8409015b727f46230e7c4b80c4129475db85646014af9865f045182636d77429014d665dfb405beee8f5f99dcf667b7c0199aade7
SSDEEP 98304:IuOdAWE/bfbxbxBimum48oJjLrUZhWcgWy75MTps2CObMUZCzBSo:IuOpIddBi3V8Ojm7gWylM939Cl
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion execution loader persistence rootkit upx

Malware Config

Signatures

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

Glupteba payload 19 IoCs

resource	yara_rule
behavioral2/memory/968-2-0x00000000048C0000-0x00000000051AB000-memory.dmp	family_glupteba
behavioral2/memory/968-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/968-110-0x00000000048C0000-0x00000000051AB000-memory.dmp	family_glupteba
behavioral2/memory/968-108-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/968-182-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/552-181-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4904-200-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4904-211-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4904-215-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4904-219-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4904-223-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4904-227-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4904-231-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4904-235-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4904-239-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4904-243-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4904-247-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4904-251-0x0000000000400000-0x000000000273B000-memory.dmp	family_glupteba
behavioral2/memory/4904-255-0x0000000000400000-0x000000000273B000-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
680	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
4904	csrss.exe
1296	injector.exe
2212	windefender.exe
780	windefender.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002aa1d-204.dat	upx
behavioral2/memory/2212-206-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/780-208-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2212-209-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/780-213-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/780-221-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/780-233-0x0000000000400000-0x00000000008DF000-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-1-5-21-1230210488-3096403634-4129516247-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1230210488-3096403634-4129516247-1000\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	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
File created	C:\Windows\rss\csrss.exe	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.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
4412	sc.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2972	powershell.exe
3436	powershell.exe
2944	powershell.exe
1188	powershell.exe
128	powershell.exe
564	powershell.exe
2324	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
1832	schtasks.exe
4620	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	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\@tzres.dll,-1911 = "Russia TZ 10 Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-692 = "Tasmania Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2512 = "Lord Howe Standard Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1892 = "Russia TZ 3 Standard Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1661 = "Bahia Daylight Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	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,-961 = "Paraguay Daylight Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-562 = "SE Asia Standard Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2142 = "Transbaikal Standard Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	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\@tzres.dll,-2612 = "Bougainville Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-441 = "Arabian Daylight Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-931 = "Coordinated Universal Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-12 = "Azores Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-912 = "Mauritius Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2891 = "Sudan Daylight Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-32 = "Mid-Atlantic Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1912 = "Russia TZ 10 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2491 = "Aus Central W. Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-871 = "Pakistan Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-448 = "Azerbaijan Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	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\2a\52C64B7E\@tzres.dll,-362 = "GTB Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1661 = "Bahia Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-491 = "India Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	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\2a\52C64B7E\@tzres.dll,-151 = "Central America Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-292 = "Central European Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1861 = "Russia TZ 6 Daylight Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-122 = "SA Pacific Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-631 = "Tokyo Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time"	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2324	powershell.exe
2324	powershell.exe
968	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
968	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
2972	powershell.exe
2972	powershell.exe
552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
3436	powershell.exe
3436	powershell.exe
2944	powershell.exe
2944	powershell.exe
1188	powershell.exe
1188	powershell.exe
128	powershell.exe
128	powershell.exe
564	powershell.exe
564	powershell.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
4904	csrss.exe
4904	csrss.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
4904	csrss.exe
4904	csrss.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
4904	csrss.exe
4904	csrss.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe
1296	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2324	powershell.exe
Token: SeDebugPrivilege	968	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Token: SeImpersonatePrivilege	968	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
Token: SeDebugPrivilege	2972	powershell.exe
Token: SeDebugPrivilege	3436	powershell.exe
Token: SeDebugPrivilege	2944	powershell.exe
Token: SeDebugPrivilege	1188	powershell.exe
Token: SeDebugPrivilege	128	powershell.exe
Token: SeDebugPrivilege	564	powershell.exe
Token: SeSystemEnvironmentPrivilege	4904	csrss.exe
Token: SeSecurityPrivilege	4412	sc.exe
Token: SeSecurityPrivilege	4412	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 968 wrote to memory of 2324	968	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe	82
PID 968 wrote to memory of 2324	968	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe	82
PID 968 wrote to memory of 2324	968	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe	82
PID 552 wrote to memory of 2972	552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe	88
PID 552 wrote to memory of 2972	552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe	88
PID 552 wrote to memory of 2972	552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe	88
PID 552 wrote to memory of 2288	552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe	90
PID 552 wrote to memory of 2288	552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe	90
PID 2288 wrote to memory of 680	2288	cmd.exe	92
PID 2288 wrote to memory of 680	2288	cmd.exe	92
PID 552 wrote to memory of 3436	552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe	93
PID 552 wrote to memory of 3436	552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe	93
PID 552 wrote to memory of 3436	552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe	93
PID 552 wrote to memory of 2944	552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe	95
PID 552 wrote to memory of 2944	552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe	95
PID 552 wrote to memory of 2944	552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe	95
PID 552 wrote to memory of 4904	552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe	97
PID 552 wrote to memory of 4904	552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe	97
PID 552 wrote to memory of 4904	552	8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe	97
PID 4904 wrote to memory of 1188	4904	csrss.exe	98
PID 4904 wrote to memory of 1188	4904	csrss.exe	98
PID 4904 wrote to memory of 1188	4904	csrss.exe	98
PID 4904 wrote to memory of 128	4904	csrss.exe	104
PID 4904 wrote to memory of 128	4904	csrss.exe	104
PID 4904 wrote to memory of 128	4904	csrss.exe	104
PID 4904 wrote to memory of 564	4904	csrss.exe	106
PID 4904 wrote to memory of 564	4904	csrss.exe	106
PID 4904 wrote to memory of 564	4904	csrss.exe	106
PID 4904 wrote to memory of 1296	4904	csrss.exe	108
PID 4904 wrote to memory of 1296	4904	csrss.exe	108
PID 2212 wrote to memory of 2356	2212	windefender.exe	114
PID 2212 wrote to memory of 2356	2212	windefender.exe	114
PID 2212 wrote to memory of 2356	2212	windefender.exe	114
PID 2356 wrote to memory of 4412	2356	cmd.exe	115
PID 2356 wrote to memory of 4412	2356	cmd.exe	115
PID 2356 wrote to memory of 4412	2356	cmd.exe	115

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\8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
"C:\Users\Admin\AppData\Local\Temp\8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:968
- 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:2324
- C:\Users\Admin\AppData\Local\Temp\8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.exe
  "C:\Users\Admin\AppData\Local\Temp\8abb518c80dd379fafe589f4c350e849b68903fef64aa7b4284ee016dd061119.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:552
- - 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:2972
- - 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:2288
  - - 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:680
- - 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:3436
- - 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:2944
- - 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:4904
  - - 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:1188
  - - 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:1832
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:2080
  - - 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:128
  - - 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:564
  - - 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:1296
  - - 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:4620
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:2212
    - - 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:2356
      - 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:4412

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:780

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

__PSScriptPolicyTest_s0zyy5ez.uuv.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_s0zyy5ez.uuv.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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injector.exe

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

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powershell.exe.log

Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Size 2KB
SHA256 e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9
MD5 ac4917a885cf6050b1a483e4bc4d2ea5
SHA1 b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f
SHA512 092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d
MD5 SHA1 SHA512

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