glupteba | 2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8

Analysis

max time kernel
149s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
02/05/2024, 12:46

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General

Target
2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Size 4.2MB
Sample240502-pzznsshc3t
SHA256 2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8
MD5 0dee68d010319af1b83cdce5b2ece5fe
SHA1 08ad9b9145ba5f5ec236c01bcaed40f6306c16a3
SHA512 5805f13ee163865559735b777e3c9235286439bdeb917cf15c471e83a81e8de6984783179a23978b0a8ba62e74cae32797aecbea26d788e3da74f041671b0be3
SSDEEP 98304:aP3s3qjdBdDFQ0EF6+8p23SFx66+lfgVQv7fmhEt0NHbgO:yVhFQ0EFAACF2JgWKhHbgO
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/3036-2-0x0000000003F00000-0x00000000047EB000-memory.dmp	family_glupteba
behavioral2/memory/3036-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/3036-97-0x0000000000400000-0x0000000001DF1000-memory.dmp	family_glupteba
behavioral2/memory/3036-119-0x0000000003F00000-0x00000000047EB000-memory.dmp	family_glupteba
behavioral2/memory/1564-124-0x0000000000400000-0x0000000001DF1000-memory.dmp	family_glupteba
behavioral2/memory/3036-148-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/2416-200-0x0000000000400000-0x0000000001DF1000-memory.dmp	family_glupteba
behavioral2/memory/2416-211-0x0000000000400000-0x0000000001DF1000-memory.dmp	family_glupteba
behavioral2/memory/2416-213-0x0000000000400000-0x0000000001DF1000-memory.dmp	family_glupteba
behavioral2/memory/2416-217-0x0000000000400000-0x0000000001DF1000-memory.dmp	family_glupteba
behavioral2/memory/2416-220-0x0000000000400000-0x0000000001DF1000-memory.dmp	family_glupteba
behavioral2/memory/2416-223-0x0000000000400000-0x0000000001DF1000-memory.dmp	family_glupteba
behavioral2/memory/2416-225-0x0000000000400000-0x0000000001DF1000-memory.dmp	family_glupteba
behavioral2/memory/2416-229-0x0000000000400000-0x0000000001DF1000-memory.dmp	family_glupteba
behavioral2/memory/2416-232-0x0000000000400000-0x0000000001DF1000-memory.dmp	family_glupteba
behavioral2/memory/2416-235-0x0000000000400000-0x0000000001DF1000-memory.dmp	family_glupteba
behavioral2/memory/2416-237-0x0000000000400000-0x0000000001DF1000-memory.dmp	family_glupteba
behavioral2/memory/2416-241-0x0000000000400000-0x0000000001DF1000-memory.dmp	family_glupteba
behavioral2/memory/2416-244-0x0000000000400000-0x0000000001DF1000-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
1516	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
2416	csrss.exe
3056	injector.exe
416	windefender.exe
2356	windefender.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x001a00000002ab79-204.dat	upx
behavioral2/memory/416-205-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2356-208-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/416-210-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2356-214-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2356-219-0x0000000000400000-0x00000000008DF000-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-1-5-21-1856190483-1022094809-400023910-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1856190483-1022094809-400023910-1000\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 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

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	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
File created	C:\Windows\rss\csrss.exe	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.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
2104	sc.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4004	powershell.exe
2120	powershell.exe
5060	powershell.exe
2200	powershell.exe
4104	powershell.exe
2008	powershell.exe
1932	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
3340	schtasks.exe
1356	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.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\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1831 = "Russia TZ 2 Daylight Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.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\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1822 = "Russia TZ 1 Standard Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\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,-222 = "Alaskan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-622 = "Korea Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-291 = "Central European Daylight Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1802 = "Line Islands Standard Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1931 = "Russia TZ 11 Daylight Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-81 = "Atlantic Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-492 = "India Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-691 = "Tasmania Daylight Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.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\CA\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-392 = "Arab Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-891 = "Morocco Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2941 = "Sao Tome Daylight Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.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\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,-152 = "Central America Standard Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2942 = "Sao Tome Standard Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3142 = "South Sudan Standard Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	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\2a\52C64B7E\@tzres.dll,-2592 = "Tocantins Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1932 = "Russia TZ 11 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-448 = "Azerbaijan Daylight Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\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\2a\52C64B7E\@tzres.dll,-452 = "Caucasus Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	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\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,-211 = "Pacific Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-571 = "China Daylight Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	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\@tzres.dll,-391 = "Arab Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-82 = "Atlantic Standard Time"	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1932	powershell.exe
1932	powershell.exe
3036	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
3036	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
4004	powershell.exe
4004	powershell.exe
1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
2120	powershell.exe
2120	powershell.exe
5060	powershell.exe
5060	powershell.exe
2200	powershell.exe
2200	powershell.exe
4104	powershell.exe
4104	powershell.exe
2008	powershell.exe
2008	powershell.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
2416	csrss.exe
2416	csrss.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
2416	csrss.exe
2416	csrss.exe
3056	injector.exe
3056	injector.exe
2416	csrss.exe
2416	csrss.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe
3056	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	1932	powershell.exe
Token: SeDebugPrivilege	3036	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Token: SeImpersonatePrivilege	3036	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
Token: SeDebugPrivilege	4004	powershell.exe
Token: SeDebugPrivilege	2120	powershell.exe
Token: SeDebugPrivilege	5060	powershell.exe
Token: SeDebugPrivilege	2200	powershell.exe
Token: SeDebugPrivilege	4104	powershell.exe
Token: SeDebugPrivilege	2008	powershell.exe
Token: SeSystemEnvironmentPrivilege	2416	csrss.exe
Token: SeSecurityPrivilege	2104	sc.exe
Token: SeSecurityPrivilege	2104	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 1932	3036	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe	81
PID 3036 wrote to memory of 1932	3036	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe	81
PID 3036 wrote to memory of 1932	3036	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe	81
PID 1564 wrote to memory of 4004	1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe	86
PID 1564 wrote to memory of 4004	1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe	86
PID 1564 wrote to memory of 4004	1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe	86
PID 1564 wrote to memory of 3712	1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe	88
PID 1564 wrote to memory of 3712	1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe	88
PID 3712 wrote to memory of 1516	3712	cmd.exe	90
PID 3712 wrote to memory of 1516	3712	cmd.exe	90
PID 1564 wrote to memory of 2120	1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe	91
PID 1564 wrote to memory of 2120	1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe	91
PID 1564 wrote to memory of 2120	1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe	91
PID 1564 wrote to memory of 5060	1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe	93
PID 1564 wrote to memory of 5060	1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe	93
PID 1564 wrote to memory of 5060	1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe	93
PID 1564 wrote to memory of 2416	1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe	95
PID 1564 wrote to memory of 2416	1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe	95
PID 1564 wrote to memory of 2416	1564	2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe	95
PID 2416 wrote to memory of 2200	2416	csrss.exe	96
PID 2416 wrote to memory of 2200	2416	csrss.exe	96
PID 2416 wrote to memory of 2200	2416	csrss.exe	96
PID 2416 wrote to memory of 4104	2416	csrss.exe	101
PID 2416 wrote to memory of 4104	2416	csrss.exe	101
PID 2416 wrote to memory of 4104	2416	csrss.exe	101
PID 2416 wrote to memory of 2008	2416	csrss.exe	104
PID 2416 wrote to memory of 2008	2416	csrss.exe	104
PID 2416 wrote to memory of 2008	2416	csrss.exe	104
PID 2416 wrote to memory of 3056	2416	csrss.exe	106
PID 2416 wrote to memory of 3056	2416	csrss.exe	106
PID 416 wrote to memory of 3808	416	windefender.exe	112
PID 416 wrote to memory of 3808	416	windefender.exe	112
PID 416 wrote to memory of 3808	416	windefender.exe	112
PID 3808 wrote to memory of 2104	3808	cmd.exe	113
PID 3808 wrote to memory of 2104	3808	cmd.exe	113
PID 3808 wrote to memory of 2104	3808	cmd.exe	113

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\2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
"C:\Users\Admin\AppData\Local\Temp\2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3036
- 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:1932
- C:\Users\Admin\AppData\Local\Temp\2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.exe
  "C:\Users\Admin\AppData\Local\Temp\2b998cb6aff5a2185d0e42967345ff59a0a3dc63aa314a0682e64d17186a70f8.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:1564
- - 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:4004
- - 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:3712
  - - 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:1516
- - 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:2120
- - 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:5060
- - 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:2416
  - - 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:2200
  - - 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:3340
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:2136
  - - 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:4104
  - - 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:2008
  - - 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:3056
  - - 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:1356
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:416
    - - 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:3808
      - 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:2104

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2356

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

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Downloads

__PSScriptPolicyTest_bi1afwox.osl.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bi1afwox.osl.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 9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
MD5 d0c46cad6c0778401e21910bd6b56b70
SHA1 7be418951ea96326aca445b8dfe449b2bfa0dca6
SHA512 057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949
MD5 SHA1 SHA512

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