glupteba | abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1

Analysis

max time kernel
150s
max time network
139s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
26/04/2024, 12:27

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General

Target
abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Size 4.2MB
Sample240426-pmvjbacc91
SHA256 abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1
MD5 a25ea4a5a195e3d5499e9990a88391b7
SHA1 b9e08b0c4d3dbfeff1aa4d3eb5241276efc62101
SHA512 4ca39265baedca1205f84afccedd57b3c27eed3a1c6e467a041f07374e17237365bd186722fa959a7efc514ae3dc0f1b9232dde1562bbd3947d21147eb09d1ab
SSDEEP 98304:GoYeyy8kHe78wPlePBdIBkk7XHCPR9lUiyPcb7obt3hLJPXV:lYed8id2le5CV69lULPddV
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit

Malware Config

Signatures

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

Glupteba payload 18 IoCs

resource	yara_rule
behavioral2/memory/3900-2-0x0000000006520000-0x0000000006E0B000-memory.dmp	family_glupteba
behavioral2/memory/3900-3-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/3900-51-0x0000000006520000-0x0000000006E0B000-memory.dmp	family_glupteba
behavioral2/memory/3900-49-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/2924-123-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/1120-151-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/1120-202-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/1120-204-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/1120-205-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/1120-206-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/1120-207-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/1120-208-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/1120-209-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/1120-210-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/1120-211-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/1120-212-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/1120-213-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/1120-214-0x0000000000400000-0x000000000441F000-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
4420	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
1120	csrss.exe
2024	injector.exe

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-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000\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	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
File created	C:\Windows\rss\csrss.exe	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.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
3928	schtasks.exe
2688	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1042 = "Ulaanbaatar Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2891 = "Sudan Daylight Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	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\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-41 = "E. South America Daylight Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-352 = "FLE Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1802 = "Line Islands Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3142 = "South Sudan Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-602 = "Taipei Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2531 = "Chatham Islands Daylight Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2942 = "Sao Tome Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1661 = "Bahia Daylight Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	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"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-362 = "GTB Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.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
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-251 = "Dateline Daylight Time"	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2948	powershell.exe
2948	powershell.exe
3900	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
3900	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
408	powershell.exe
408	powershell.exe
2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
4452	powershell.exe
4452	powershell.exe
1284	powershell.exe
1284	powershell.exe
1808	powershell.exe
1808	powershell.exe
3864	powershell.exe
3864	powershell.exe
4252	powershell.exe
4252	powershell.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
1120	csrss.exe
1120	csrss.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
1120	csrss.exe
1120	csrss.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe
2024	injector.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	2948	powershell.exe
Token: SeDebugPrivilege	3900	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Token: SeImpersonatePrivilege	3900	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
Token: SeDebugPrivilege	408	powershell.exe
Token: SeDebugPrivilege	4452	powershell.exe
Token: SeDebugPrivilege	1284	powershell.exe
Token: SeDebugPrivilege	1808	powershell.exe
Token: SeDebugPrivilege	3864	powershell.exe
Token: SeDebugPrivilege	4252	powershell.exe
Token: SeSystemEnvironmentPrivilege	1120	csrss.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3900 wrote to memory of 2948	3900	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe	80
PID 3900 wrote to memory of 2948	3900	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe	80
PID 3900 wrote to memory of 2948	3900	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe	80
PID 2924 wrote to memory of 408	2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe	86
PID 2924 wrote to memory of 408	2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe	86
PID 2924 wrote to memory of 408	2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe	86
PID 2924 wrote to memory of 1728	2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe	88
PID 2924 wrote to memory of 1728	2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe	88
PID 1728 wrote to memory of 4420	1728	cmd.exe	90
PID 1728 wrote to memory of 4420	1728	cmd.exe	90
PID 2924 wrote to memory of 4452	2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe	91
PID 2924 wrote to memory of 4452	2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe	91
PID 2924 wrote to memory of 4452	2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe	91
PID 2924 wrote to memory of 1284	2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe	93
PID 2924 wrote to memory of 1284	2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe	93
PID 2924 wrote to memory of 1284	2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe	93
PID 2924 wrote to memory of 1120	2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe	95
PID 2924 wrote to memory of 1120	2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe	95
PID 2924 wrote to memory of 1120	2924	abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe	95
PID 1120 wrote to memory of 1808	1120	csrss.exe	96
PID 1120 wrote to memory of 1808	1120	csrss.exe	96
PID 1120 wrote to memory of 1808	1120	csrss.exe	96
PID 1120 wrote to memory of 3864	1120	csrss.exe	102
PID 1120 wrote to memory of 3864	1120	csrss.exe	102
PID 1120 wrote to memory of 3864	1120	csrss.exe	102
PID 1120 wrote to memory of 4252	1120	csrss.exe	104
PID 1120 wrote to memory of 4252	1120	csrss.exe	104
PID 1120 wrote to memory of 4252	1120	csrss.exe	104
PID 1120 wrote to memory of 2024	1120	csrss.exe	106
PID 1120 wrote to memory of 2024	1120	csrss.exe	106

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\abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
"C:\Users\Admin\AppData\Local\Temp\abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3900
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2948
- C:\Users\Admin\AppData\Local\Temp\abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.exe
  "C:\Users\Admin\AppData\Local\Temp\abea69cf3e4e5860a8dc908396f3e71c07203167143d12e59b940e2393f575d1.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:2924
- - 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:408
- - 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:1728
  - - 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:4420
- - 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:4452
- - 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:1284
- - C:\Windows\rss\csrss.exe
    C:\Windows\rss\csrss.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Manipulates WinMonFS driver.
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1120
  - - 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:1808
  - - 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:3928
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:1960
  - - 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:3864
  - - 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:4252
  - - 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:2024
  - - 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:2688

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_nygk5xcg.i53.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nygk5xcg.i53.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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