glupteba | 1e750e4de75ed0e592725b1e03c2bfdef0e62eaee04cdc4dd139edde2148e551

Analysis

max time kernel
157s
max time network
168s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
03/03/2024, 05:47

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General

Target
cff10b1823ef198c4f8571539a54f58f.exe
Size 4.1MB
Sample240303-ggvywsed59
SHA256 1e750e4de75ed0e592725b1e03c2bfdef0e62eaee04cdc4dd139edde2148e551
MD5 cff10b1823ef198c4f8571539a54f58f
SHA1 8c4a80af458861ae4228fff7cb3c9e11c68b2b88
SHA512 c7d8b0ace2b4033eb9fc1003b6ababf5f93933685cfc74328f94a6502d36653a20a16483de77e0851ffb11571b9e00311b4dc19d4d4c01fb1d51392d1b185a50
SSDEEP 98304:rF7fKd4Pcj1x07dk3n/9a1UJpezGk++zu28SAxLOSC8:rVExx2aw1ULoGkn18S0CSC8
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 19 IoCs

resource	yara_rule
behavioral2/memory/2044-2-0x0000000004100000-0x00000000049EB000-memory.dmp	family_glupteba
behavioral2/memory/2044-3-0x0000000000400000-0x0000000001E0E000-memory.dmp	family_glupteba
behavioral2/memory/2044-24-0x0000000000400000-0x0000000001E0E000-memory.dmp	family_glupteba
behavioral2/memory/2044-31-0x0000000000400000-0x0000000001E0E000-memory.dmp	family_glupteba
behavioral2/memory/2044-32-0x0000000004100000-0x00000000049EB000-memory.dmp	family_glupteba
behavioral2/memory/2044-45-0x0000000000400000-0x0000000001E0E000-memory.dmp	family_glupteba
behavioral2/memory/2044-64-0x0000000000400000-0x0000000001E0E000-memory.dmp	family_glupteba
behavioral2/memory/2044-68-0x0000000000400000-0x0000000001E0E000-memory.dmp	family_glupteba
behavioral2/memory/5056-71-0x0000000003F00000-0x00000000047EB000-memory.dmp	family_glupteba
behavioral2/memory/5056-72-0x0000000000400000-0x0000000001E0E000-memory.dmp	family_glupteba
behavioral2/memory/5056-102-0x0000000000400000-0x0000000001E0E000-memory.dmp	family_glupteba
behavioral2/memory/5056-109-0x0000000003AF0000-0x0000000003EF4000-memory.dmp	family_glupteba
behavioral2/memory/5056-122-0x0000000000400000-0x0000000001E0E000-memory.dmp	family_glupteba
behavioral2/memory/5056-138-0x0000000000400000-0x0000000001E0E000-memory.dmp	family_glupteba
behavioral2/memory/5056-169-0x0000000000400000-0x0000000001E0E000-memory.dmp	family_glupteba
behavioral2/memory/4388-239-0x0000000000400000-0x0000000001E0E000-memory.dmp	family_glupteba
behavioral2/memory/4388-272-0x0000000000400000-0x0000000001E0E000-memory.dmp	family_glupteba
behavioral2/memory/4388-276-0x0000000000400000-0x0000000001E0E000-memory.dmp	family_glupteba
behavioral2/memory/4388-285-0x0000000000400000-0x0000000001E0E000-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
4636	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
4388	csrss.exe
2168	injector.exe
2352	windefender.exe
4384	windefender.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0008000000023255-279.dat	upx
behavioral2/memory/2352-284-0x0000000000400000-0x00000000008DF000-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-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\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 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
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log	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	cff10b1823ef198c4f8571539a54f58f.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	cff10b1823ef198c4f8571539a54f58f.exe
File created	C:\Windows\rss\csrss.exe	cff10b1823ef198c4f8571539a54f58f.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
5112	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
4548	schtasks.exe
864	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	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\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-602 = "Taipei Standard Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time"	cff10b1823ef198c4f8571539a54f58f.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-672 = "AUS Eastern Standard Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-3051 = "Qyzylorda Daylight Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time"	cff10b1823ef198c4f8571539a54f58f.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-105 = "Central Brazilian Standard Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time"	cff10b1823ef198c4f8571539a54f58f.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2872 = "Magallanes Standard Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2572 = "Turks and Caicos Standard Time"	cff10b1823ef198c4f8571539a54f58f.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-571 = "China Daylight Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2792 = "Novosibirsk Standard Time"	cff10b1823ef198c4f8571539a54f58f.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-41 = "E. South America Daylight Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2492 = "Aus Central W. Standard Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time"	cff10b1823ef198c4f8571539a54f58f.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time"	cff10b1823ef198c4f8571539a54f58f.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-291 = "Central European Daylight Time"	cff10b1823ef198c4f8571539a54f58f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time"	cff10b1823ef198c4f8571539a54f58f.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2484	powershell.exe
2484	powershell.exe
2044	cff10b1823ef198c4f8571539a54f58f.exe
2044	cff10b1823ef198c4f8571539a54f58f.exe
4752	powershell.exe
4752	powershell.exe
5056	cff10b1823ef198c4f8571539a54f58f.exe
5056	cff10b1823ef198c4f8571539a54f58f.exe
5056	cff10b1823ef198c4f8571539a54f58f.exe
5056	cff10b1823ef198c4f8571539a54f58f.exe
5056	cff10b1823ef198c4f8571539a54f58f.exe
5056	cff10b1823ef198c4f8571539a54f58f.exe
5056	cff10b1823ef198c4f8571539a54f58f.exe
5056	cff10b1823ef198c4f8571539a54f58f.exe
5056	cff10b1823ef198c4f8571539a54f58f.exe
5056	cff10b1823ef198c4f8571539a54f58f.exe
5036	powershell.exe
5036	powershell.exe
3888	powershell.exe
3888	powershell.exe
2596	powershell.exe
2596	powershell.exe
4948	powershell.exe
4948	powershell.exe
692	powershell.exe
692	powershell.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
4388	csrss.exe
4388	csrss.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
4388	csrss.exe
4388	csrss.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
4388	csrss.exe
4388	csrss.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe
2168	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2484	powershell.exe
Token: SeDebugPrivilege	2044	cff10b1823ef198c4f8571539a54f58f.exe
Token: SeImpersonatePrivilege	2044	cff10b1823ef198c4f8571539a54f58f.exe
Token: SeDebugPrivilege	4752	powershell.exe
Token: SeDebugPrivilege	5036	powershell.exe
Token: SeDebugPrivilege	3888	powershell.exe
Token: SeDebugPrivilege	2596	powershell.exe
Token: SeDebugPrivilege	4948	powershell.exe
Token: SeDebugPrivilege	692	powershell.exe
Token: SeSystemEnvironmentPrivilege	4388	csrss.exe
Token: SeSecurityPrivilege	5112	sc.exe
Token: SeSecurityPrivilege	5112	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 2484	2044	cff10b1823ef198c4f8571539a54f58f.exe	93
PID 2044 wrote to memory of 2484	2044	cff10b1823ef198c4f8571539a54f58f.exe	93
PID 2044 wrote to memory of 2484	2044	cff10b1823ef198c4f8571539a54f58f.exe	93
PID 5056 wrote to memory of 4752	5056	cff10b1823ef198c4f8571539a54f58f.exe	106
PID 5056 wrote to memory of 4752	5056	cff10b1823ef198c4f8571539a54f58f.exe	106
PID 5056 wrote to memory of 4752	5056	cff10b1823ef198c4f8571539a54f58f.exe	106
PID 5056 wrote to memory of 2668	5056	cff10b1823ef198c4f8571539a54f58f.exe	108
PID 5056 wrote to memory of 2668	5056	cff10b1823ef198c4f8571539a54f58f.exe	108
PID 2668 wrote to memory of 4636	2668	cmd.exe	110
PID 2668 wrote to memory of 4636	2668	cmd.exe	110
PID 5056 wrote to memory of 5036	5056	cff10b1823ef198c4f8571539a54f58f.exe	111
PID 5056 wrote to memory of 5036	5056	cff10b1823ef198c4f8571539a54f58f.exe	111
PID 5056 wrote to memory of 5036	5056	cff10b1823ef198c4f8571539a54f58f.exe	111
PID 5056 wrote to memory of 3888	5056	cff10b1823ef198c4f8571539a54f58f.exe	113
PID 5056 wrote to memory of 3888	5056	cff10b1823ef198c4f8571539a54f58f.exe	113
PID 5056 wrote to memory of 3888	5056	cff10b1823ef198c4f8571539a54f58f.exe	113
PID 5056 wrote to memory of 4388	5056	cff10b1823ef198c4f8571539a54f58f.exe	115
PID 5056 wrote to memory of 4388	5056	cff10b1823ef198c4f8571539a54f58f.exe	115
PID 5056 wrote to memory of 4388	5056	cff10b1823ef198c4f8571539a54f58f.exe	115
PID 4388 wrote to memory of 2596	4388	csrss.exe	116
PID 4388 wrote to memory of 2596	4388	csrss.exe	116
PID 4388 wrote to memory of 2596	4388	csrss.exe	116
PID 4388 wrote to memory of 4948	4388	csrss.exe	122
PID 4388 wrote to memory of 4948	4388	csrss.exe	122
PID 4388 wrote to memory of 4948	4388	csrss.exe	122
PID 4388 wrote to memory of 692	4388	csrss.exe	124
PID 4388 wrote to memory of 692	4388	csrss.exe	124
PID 4388 wrote to memory of 692	4388	csrss.exe	124
PID 4388 wrote to memory of 2168	4388	csrss.exe	126
PID 4388 wrote to memory of 2168	4388	csrss.exe	126
PID 2352 wrote to memory of 4820	2352	windefender.exe	132
PID 2352 wrote to memory of 4820	2352	windefender.exe	132
PID 2352 wrote to memory of 4820	2352	windefender.exe	132
PID 4820 wrote to memory of 5112	4820	cmd.exe	133
PID 4820 wrote to memory of 5112	4820	cmd.exe	133
PID 4820 wrote to memory of 5112	4820	cmd.exe	133

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\cff10b1823ef198c4f8571539a54f58f.exe
"C:\Users\Admin\AppData\Local\Temp\cff10b1823ef198c4f8571539a54f58f.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2484
- C:\Users\Admin\AppData\Local\Temp\cff10b1823ef198c4f8571539a54f58f.exe
  "C:\Users\Admin\AppData\Local\Temp\cff10b1823ef198c4f8571539a54f58f.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:5056
- - 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:4752
- - 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:2668
  - - 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:4636
- - 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:5036
- - 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:3888
- - 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:4388
  - - 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:2596
  - - 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:4548
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:2732
  - - 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:4948
  - - 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:692
  - - 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:2168
  - - 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:864
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:2352
    - - 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:4820
      - 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:5112

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
PID:4384

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_popowd0c.anw.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_popowd0c.anw.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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