glupteba | 885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b

Analysis

max time kernel
149s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2024, 15:59

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General

Target
885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Size 4.2MB
Sample240419-tfab1shd21
SHA256 885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b
MD5 0752e6bbcf73d611cd3fb9050bf22554
SHA1 546d13876ac7dbc4e035d926c452d841afe6fafd
SHA512 1ed59f770a9cea6e5aca93ce882bdbe84748fd1be26c92b840230e34332c7cd6ba02162ee2ce262e2e50ac9ef99dafd96f9821aeb3552235bf000f5807e36b19
SSDEEP 98304:noZCtMNcIJm/Wi5iI7vKblq/qDx6472PxO1xv/KiJeF:n3OuIEug7vwUGt7S+nKL
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 20 IoCs

resource	yara_rule
behavioral1/memory/4492-2-0x0000000003E40000-0x000000000472B000-memory.dmp	family_glupteba
behavioral1/memory/4492-3-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral1/memory/4924-57-0x0000000003E00000-0x00000000046EB000-memory.dmp	family_glupteba
behavioral1/memory/4924-58-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral1/memory/4492-69-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral1/memory/4924-120-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral1/memory/4924-124-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral1/memory/4924-203-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral1/memory/2956-259-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral1/memory/2956-266-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral1/memory/2956-273-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral1/memory/2956-277-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral1/memory/2956-281-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral1/memory/2956-285-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral1/memory/2956-289-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral1/memory/2956-293-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral1/memory/2956-297-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral1/memory/2956-301-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral1/memory/2956-305-0x0000000000400000-0x0000000001DFD000-memory.dmp	family_glupteba
behavioral1/memory/2956-309-0x0000000000400000-0x0000000001DFD000-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
4260	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
2956	csrss.exe
4164	injector.exe
3416	windefender.exe
3476	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000f000000023379-265.dat	upx
behavioral1/memory/3416-270-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral1/memory/3476-274-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral1/memory/3476-286-0x0000000000400000-0x00000000008DF000-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-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\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\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
File created	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	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
File created	C:\Windows\rss\csrss.exe	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.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
4284	sc.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
3104	schtasks.exe
1316	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\@tzres.dll,-751 = "Tonga Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-602 = "Taipei Standard Time"	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2511 = "Lord Howe Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	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,-791 = "SA Western Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-742 = "New Zealand Standard Time"	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time"	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-272 = "Greenwich Standard Time"	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time"	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-291 = "Central European Daylight Time"	windefender.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\26\52C64B7E\@tzres.dll,-511 = "Central Asia Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time"	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	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\26\52C64B7E\@tzres.dll,-1971 = "Belarus Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-281 = "Central Europe Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time"	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time"	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-241 = "Samoa Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-161 = "Central Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1832 = "Russia TZ 2 Standard Time"	windefender.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	powershell.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\@tzres.dll,-591 = "Malay Peninsula Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2892 = "Sudan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-202 = "US Mountain Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-162 = "Central Standard Time"	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time"	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time"	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2942 = "Sao Tome Standard Time"	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-462 = "Afghanistan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time"	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time"	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1411 = "Syria Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time"	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\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\26\52C64B7E\@tzres.dll,-2611 = "Bougainville Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-662 = "Cen. Australia Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-671 = "AUS Eastern Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-331 = "E. Europe Daylight Time"	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)"	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2188	powershell.exe
2188	powershell.exe
4492	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
4492	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
2780	powershell.exe
2780	powershell.exe
2780	powershell.exe
4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
2892	powershell.exe
2892	powershell.exe
2860	powershell.exe
2860	powershell.exe
2624	powershell.exe
2624	powershell.exe
468	powershell.exe
468	powershell.exe
4816	powershell.exe
4816	powershell.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
2956	csrss.exe
2956	csrss.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
2956	csrss.exe
2956	csrss.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
2956	csrss.exe
2956	csrss.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe
4164	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2188	powershell.exe
Token: SeDebugPrivilege	4492	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Token: SeImpersonatePrivilege	4492	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
Token: SeDebugPrivilege	2780	powershell.exe
Token: SeDebugPrivilege	2892	powershell.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	2624	powershell.exe
Token: SeDebugPrivilege	468	powershell.exe
Token: SeDebugPrivilege	4816	powershell.exe
Token: SeSystemEnvironmentPrivilege	2956	csrss.exe
Token: SeSecurityPrivilege	4284	sc.exe
Token: SeSecurityPrivilege	4284	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 4492 wrote to memory of 2188	4492	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe	88
PID 4492 wrote to memory of 2188	4492	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe	88
PID 4492 wrote to memory of 2188	4492	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe	88
PID 4924 wrote to memory of 2780	4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe	96
PID 4924 wrote to memory of 2780	4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe	96
PID 4924 wrote to memory of 2780	4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe	96
PID 4924 wrote to memory of 5076	4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe	99
PID 4924 wrote to memory of 5076	4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe	99
PID 5076 wrote to memory of 4260	5076	cmd.exe	101
PID 5076 wrote to memory of 4260	5076	cmd.exe	101
PID 4924 wrote to memory of 2892	4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe	102
PID 4924 wrote to memory of 2892	4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe	102
PID 4924 wrote to memory of 2892	4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe	102
PID 4924 wrote to memory of 2860	4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe	104
PID 4924 wrote to memory of 2860	4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe	104
PID 4924 wrote to memory of 2860	4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe	104
PID 4924 wrote to memory of 2956	4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe	106
PID 4924 wrote to memory of 2956	4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe	106
PID 4924 wrote to memory of 2956	4924	885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe	106
PID 2956 wrote to memory of 2624	2956	csrss.exe	107
PID 2956 wrote to memory of 2624	2956	csrss.exe	107
PID 2956 wrote to memory of 2624	2956	csrss.exe	107
PID 2956 wrote to memory of 468	2956	csrss.exe	113
PID 2956 wrote to memory of 468	2956	csrss.exe	113
PID 2956 wrote to memory of 468	2956	csrss.exe	113
PID 2956 wrote to memory of 4816	2956	csrss.exe	116
PID 2956 wrote to memory of 4816	2956	csrss.exe	116
PID 2956 wrote to memory of 4816	2956	csrss.exe	116
PID 2956 wrote to memory of 4164	2956	csrss.exe	118
PID 2956 wrote to memory of 4164	2956	csrss.exe	118
PID 3416 wrote to memory of 3692	3416	windefender.exe	125
PID 3416 wrote to memory of 3692	3416	windefender.exe	125
PID 3416 wrote to memory of 3692	3416	windefender.exe	125
PID 3692 wrote to memory of 4284	3692	cmd.exe	126
PID 3692 wrote to memory of 4284	3692	cmd.exe	126
PID 3692 wrote to memory of 4284	3692	cmd.exe	126

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\885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
"C:\Users\Admin\AppData\Local\Temp\885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4492
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2188
- C:\Users\Admin\AppData\Local\Temp\885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.exe
  "C:\Users\Admin\AppData\Local\Temp\885a119b2f65c029a58db3eee2cf50402bee07b5a026a5beed40b074382e253b.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:4924
- - 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:2780
- - 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:5076
  - - 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:4260
- - 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:2892
- - 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:2860
- - 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:2956
  - - 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:2624
  - - 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:3104
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:1716
  - - 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:468
  - - 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:4816
  - - 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:4164
  - - 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:1316
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:3416
    - - 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:3692
      - 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:4284

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3476

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_mw5v0iig.ytz.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mw5v0iig.ytz.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 6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69
MD5 3d086a433708053f9bf9523e1d87a4e8
SHA1 b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28
SHA512 931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd
MD5 SHA1 SHA512

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