glupteba | 452c2fae1cf93f933ef30e73cd3ae5d8afc14286b0aa58a512c40f3e81e5a922

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26/01/2024, 10:14

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
029cfa383c2a3c9934a370a3b88f93e1.exe
Size 4.1MB
Sample240126-l9mkfacfdp
SHA256 452c2fae1cf93f933ef30e73cd3ae5d8afc14286b0aa58a512c40f3e81e5a922
MD5 029cfa383c2a3c9934a370a3b88f93e1
SHA1 dbf3495d86a7ed0ef39c46e29b0c8b9701e6a59a
SHA512 889df24541d0eeb701723c65d1f818d65e0b114c26cb4bc5f42f76c9c28710a5a805045f25a2b1d42c89557ae2acf187f7808cdc563b65a998a7d08ed17c2bb4
SSDEEP 98304:H+godgzD5J7Vt33OUYbXVn2+WcYvDBrpcjynumtC/B+xaGNkE:H+g82Jt3+UYbXVWcYv1y6Tto+xME
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/1316-2-0x00000000050C0000-0x00000000059AB000-memory.dmp	family_glupteba
behavioral2/memory/1316-3-0x0000000000400000-0x0000000002EFA000-memory.dmp	family_glupteba
behavioral2/memory/3608-57-0x0000000005120000-0x0000000005A0B000-memory.dmp	family_glupteba
behavioral2/memory/3608-58-0x0000000000400000-0x0000000002EFA000-memory.dmp	family_glupteba
behavioral2/memory/1316-59-0x0000000000400000-0x0000000002EFA000-memory.dmp	family_glupteba
behavioral2/memory/3608-135-0x0000000000400000-0x0000000002EFA000-memory.dmp	family_glupteba
behavioral2/memory/3608-156-0x0000000000400000-0x0000000002EFA000-memory.dmp	family_glupteba
behavioral2/memory/3004-253-0x0000000000400000-0x0000000002EFA000-memory.dmp	family_glupteba
behavioral2/memory/3004-263-0x0000000000400000-0x0000000002EFA000-memory.dmp	family_glupteba
behavioral2/memory/3004-267-0x0000000000400000-0x0000000002EFA000-memory.dmp	family_glupteba
behavioral2/memory/3004-271-0x0000000000400000-0x0000000002EFA000-memory.dmp	family_glupteba
behavioral2/memory/3004-275-0x0000000000400000-0x0000000002EFA000-memory.dmp	family_glupteba
behavioral2/memory/3004-279-0x0000000000400000-0x0000000002EFA000-memory.dmp	family_glupteba
behavioral2/memory/3004-283-0x0000000000400000-0x0000000002EFA000-memory.dmp	family_glupteba
behavioral2/memory/3004-287-0x0000000000400000-0x0000000002EFA000-memory.dmp	family_glupteba
behavioral2/memory/3004-291-0x0000000000400000-0x0000000002EFA000-memory.dmp	family_glupteba
behavioral2/memory/3004-295-0x0000000000400000-0x0000000002EFA000-memory.dmp	family_glupteba
behavioral2/memory/3004-299-0x0000000000400000-0x0000000002EFA000-memory.dmp	family_glupteba
behavioral2/memory/3004-302-0x0000000000400000-0x0000000002EFA000-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
1768	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
3004	csrss.exe
5004	injector.exe
2060	windefender.exe
3300	windefender.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000800000002324d-256.dat	upx
behavioral2/files/0x000800000002324d-258.dat	upx
behavioral2/memory/2060-260-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/3300-264-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/3300-272-0x0000000000400000-0x00000000008DF000-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-1-5-21-635608581-3370340891-292606865-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	029cfa383c2a3c9934a370a3b88f93e1.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\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	029cfa383c2a3c9934a370a3b88f93e1.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	029cfa383c2a3c9934a370a3b88f93e1.exe
File created	C:\Windows\rss\csrss.exe	029cfa383c2a3c9934a370a3b88f93e1.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
1960	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
4820	schtasks.exe
2984	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-3051 = "Qyzylorda Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time"	029cfa383c2a3c9934a370a3b88f93e1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	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\@tzres.dll,-1972 = "Belarus Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-2001 = "Cabo Verde Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time"	029cfa383c2a3c9934a370a3b88f93e1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	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,-1722 = "Libya Standard Time"	029cfa383c2a3c9934a370a3b88f93e1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time"	029cfa383c2a3c9934a370a3b88f93e1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-122 = "SA Pacific Standard Time"	029cfa383c2a3c9934a370a3b88f93e1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time"	029cfa383c2a3c9934a370a3b88f93e1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-242 = "Samoa Standard Time"	029cfa383c2a3c9934a370a3b88f93e1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-842 = "Argentina Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-721 = "Central Pacific Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-541 = "Myanmar Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-334 = "Jordan Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-2632 = "Norfolk Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-1891 = "Russia TZ 3 Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time"	029cfa383c2a3c9934a370a3b88f93e1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1872 = "Russia TZ 7 Standard Time"	029cfa383c2a3c9934a370a3b88f93e1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-2432 = "Cuba Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time"	029cfa383c2a3c9934a370a3b88f93e1.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\trust\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\22\52C64B7E\@tzres.dll,-301 = "Romance Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2371 = "Easter Island Daylight Time"	029cfa383c2a3c9934a370a3b88f93e1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-51 = "Greenland Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-742 = "New Zealand Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time"	029cfa383c2a3c9934a370a3b88f93e1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	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\22\52C64B7E\@tzres.dll,-681 = "E. Australia Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-982 = "Kamchatka Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time"	029cfa383c2a3c9934a370a3b88f93e1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-2141 = "Transbaikal Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-932 = "Coordinated Universal Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.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 (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-385 = "Namibia Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-92 = "Pacific SA Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-512 = "Central Asia Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-732 = "Fiji Standard Time"	029cfa383c2a3c9934a370a3b88f93e1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time"	029cfa383c2a3c9934a370a3b88f93e1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-931 = "Coordinated Universal Time"	029cfa383c2a3c9934a370a3b88f93e1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1164	powershell.exe
1164	powershell.exe
1316	029cfa383c2a3c9934a370a3b88f93e1.exe
1316	029cfa383c2a3c9934a370a3b88f93e1.exe
1128	powershell.exe
1128	powershell.exe
3608	029cfa383c2a3c9934a370a3b88f93e1.exe
3608	029cfa383c2a3c9934a370a3b88f93e1.exe
3608	029cfa383c2a3c9934a370a3b88f93e1.exe
3608	029cfa383c2a3c9934a370a3b88f93e1.exe
3608	029cfa383c2a3c9934a370a3b88f93e1.exe
3608	029cfa383c2a3c9934a370a3b88f93e1.exe
3608	029cfa383c2a3c9934a370a3b88f93e1.exe
3608	029cfa383c2a3c9934a370a3b88f93e1.exe
3608	029cfa383c2a3c9934a370a3b88f93e1.exe
3608	029cfa383c2a3c9934a370a3b88f93e1.exe
1376	powershell.exe
1376	powershell.exe
1440	powershell.exe
1440	powershell.exe
3572	powershell.exe
3572	powershell.exe
2028	powershell.exe
2028	powershell.exe
2028	powershell.exe
2704	powershell.exe
2704	powershell.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
3004	csrss.exe
3004	csrss.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
3004	csrss.exe
3004	csrss.exe
5004	injector.exe
5004	injector.exe
3004	csrss.exe
3004	csrss.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe
5004	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	1164	powershell.exe
Token: SeDebugPrivilege	1316	029cfa383c2a3c9934a370a3b88f93e1.exe
Token: SeImpersonatePrivilege	1316	029cfa383c2a3c9934a370a3b88f93e1.exe
Token: SeDebugPrivilege	1128	powershell.exe
Token: SeDebugPrivilege	1376	powershell.exe
Token: SeDebugPrivilege	1440	powershell.exe
Token: SeDebugPrivilege	3572	powershell.exe
Token: SeDebugPrivilege	2028	powershell.exe
Token: SeDebugPrivilege	2704	powershell.exe
Token: SeSystemEnvironmentPrivilege	3004	csrss.exe
Token: SeSecurityPrivilege	1960	sc.exe
Token: SeSecurityPrivilege	1960	sc.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1316 wrote to memory of 1164	1316	029cfa383c2a3c9934a370a3b88f93e1.exe	89
PID 1316 wrote to memory of 1164	1316	029cfa383c2a3c9934a370a3b88f93e1.exe	89
PID 1316 wrote to memory of 1164	1316	029cfa383c2a3c9934a370a3b88f93e1.exe	89
PID 3608 wrote to memory of 1128	3608	029cfa383c2a3c9934a370a3b88f93e1.exe	100
PID 3608 wrote to memory of 1128	3608	029cfa383c2a3c9934a370a3b88f93e1.exe	100
PID 3608 wrote to memory of 1128	3608	029cfa383c2a3c9934a370a3b88f93e1.exe	100
PID 3608 wrote to memory of 1700	3608	029cfa383c2a3c9934a370a3b88f93e1.exe	102
PID 3608 wrote to memory of 1700	3608	029cfa383c2a3c9934a370a3b88f93e1.exe	102
PID 1700 wrote to memory of 1768	1700	cmd.exe	104
PID 1700 wrote to memory of 1768	1700	cmd.exe	104
PID 3608 wrote to memory of 1376	3608	029cfa383c2a3c9934a370a3b88f93e1.exe	106
PID 3608 wrote to memory of 1376	3608	029cfa383c2a3c9934a370a3b88f93e1.exe	106
PID 3608 wrote to memory of 1376	3608	029cfa383c2a3c9934a370a3b88f93e1.exe	106
PID 3608 wrote to memory of 1440	3608	029cfa383c2a3c9934a370a3b88f93e1.exe	108
PID 3608 wrote to memory of 1440	3608	029cfa383c2a3c9934a370a3b88f93e1.exe	108
PID 3608 wrote to memory of 1440	3608	029cfa383c2a3c9934a370a3b88f93e1.exe	108
PID 3608 wrote to memory of 3004	3608	029cfa383c2a3c9934a370a3b88f93e1.exe	109
PID 3608 wrote to memory of 3004	3608	029cfa383c2a3c9934a370a3b88f93e1.exe	109
PID 3608 wrote to memory of 3004	3608	029cfa383c2a3c9934a370a3b88f93e1.exe	109
PID 3004 wrote to memory of 3572	3004	csrss.exe	111
PID 3004 wrote to memory of 3572	3004	csrss.exe	111
PID 3004 wrote to memory of 3572	3004	csrss.exe	111
PID 3004 wrote to memory of 2028	3004	csrss.exe	114
PID 3004 wrote to memory of 2028	3004	csrss.exe	114
PID 3004 wrote to memory of 2028	3004	csrss.exe	114
PID 3004 wrote to memory of 2704	3004	csrss.exe	118
PID 3004 wrote to memory of 2704	3004	csrss.exe	118
PID 3004 wrote to memory of 2704	3004	csrss.exe	118
PID 3004 wrote to memory of 5004	3004	csrss.exe	121
PID 3004 wrote to memory of 5004	3004	csrss.exe	121
PID 4584 wrote to memory of 1960	4584	cmd.exe	127
PID 4584 wrote to memory of 1960	4584	cmd.exe	127
PID 4584 wrote to memory of 1960	4584	cmd.exe	127

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\029cfa383c2a3c9934a370a3b88f93e1.exe
"C:\Users\Admin\AppData\Local\Temp\029cfa383c2a3c9934a370a3b88f93e1.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1316
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1164
- C:\Users\Admin\AppData\Local\Temp\029cfa383c2a3c9934a370a3b88f93e1.exe
  "C:\Users\Admin\AppData\Local\Temp\029cfa383c2a3c9934a370a3b88f93e1.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:3608
- - 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:1128
- - 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:1700
  - - 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:1768
- - 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:1376
- - 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:1440
- - 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:3004
  - - 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:3572
  - - 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:2028
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:2360
  - - 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:4820
  - - 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:2704
  - - 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:5004
  - - 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:2984
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      PID:2060
    - - 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:4584

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)
1⤵
- Launches sc.exe
- Suspicious use of AdjustPrivilegeToken
PID:1960

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3300

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

Loading Replay Monitor...

Downloads

__PSScriptPolicyTest_u2vkuhbg.tn0.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_u2vkuhbg.tn0.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

Submit Download

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

Submit Download

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

Submit Download