glupteba | c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090

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
26/04/2024, 20:23

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General

Target
c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Size 4.2MB
Sample240426-y6cbhsbd99
SHA256 c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090
MD5 2a76fdc33b550966ca64d3db6fe6db49
SHA1 52fc2ac16dfe87d0e96046ebe265f1c81fcf9d43
SHA512 55721991b9fe0489f2db977ecdf442fa0e247d90f8b759fb783315ff104a1a65e4d3eafb0aa57262c62dba68ea96a44c4b9852a0e2768ad838745ade2e85ca5e
SSDEEP 98304:q2m5eOYCD1ID98VF2Kih+6YxfniOeVNR3JpIP6GA7sf3HgV11GH:q2m5BYCDY8uVjYxfniXVNFJ2yR7sfQV+
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 19 IoCs

resource	yara_rule
behavioral2/memory/3384-2-0x0000000006520000-0x0000000006E0B000-memory.dmp	family_glupteba
behavioral2/memory/3384-3-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/3384-74-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/4760-115-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/4760-123-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/3384-145-0x0000000006520000-0x0000000006E0B000-memory.dmp	family_glupteba
behavioral2/memory/2552-148-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/2552-195-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/2552-201-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/2552-203-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/2552-205-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/2552-208-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/2552-210-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/2552-211-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/2552-213-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/2552-216-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/2552-218-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/2552-219-0x0000000000400000-0x0000000004420000-memory.dmp	family_glupteba
behavioral2/memory/2552-221-0x0000000000400000-0x0000000004420000-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
488	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
2552	csrss.exe
4416	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-1-5-21-293923083-2364846840-4256557006-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-293923083-2364846840-4256557006-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	csrss.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Manipulates WinMonFS driver. 1 IoCs

Roottkits write to WinMonFS to hide directories/files from being detected.

rootkit evasion

description	ioc	Process
File opened for modification	\??\WinMonFS	csrss.exe

Drops file in System32 directory 7 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\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
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	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\rss\csrss.exe	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
File opened for modification	C:\Windows\rss	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.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
2820	schtasks.exe
396	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,-2001 = "Cabo Verde Daylight Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2371 = "Easter Island Daylight Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-271 = "Greenwich Daylight Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-42 = "E. South America Standard Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	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,-442 = "Arabian Standard Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3141 = "South Sudan Daylight Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-631 = "Tokyo Daylight Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.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"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	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,-448 = "Azerbaijan Daylight Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2841 = "Saratov Daylight Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2792 = "Novosibirsk Standard Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	powershell.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\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-452 = "Caucasus Standard Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	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,-365 = "Middle East Standard Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	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,-2531 = "Chatham Islands Daylight Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-412 = "E. Africa Standard Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-272 = "Greenwich Standard Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time"	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4796	powershell.exe
4796	powershell.exe
3384	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
3384	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
4948	powershell.exe
4948	powershell.exe
4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
556	powershell.exe
556	powershell.exe
4764	powershell.exe
4764	powershell.exe
4704	powershell.exe
4704	powershell.exe
3052	powershell.exe
3052	powershell.exe
2980	powershell.exe
2980	powershell.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
2552	csrss.exe
2552	csrss.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
2552	csrss.exe
2552	csrss.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe
4416	injector.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	4796	powershell.exe
Token: SeDebugPrivilege	3384	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Token: SeImpersonatePrivilege	3384	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
Token: SeDebugPrivilege	4948	powershell.exe
Token: SeDebugPrivilege	556	powershell.exe
Token: SeDebugPrivilege	4764	powershell.exe
Token: SeDebugPrivilege	4704	powershell.exe
Token: SeDebugPrivilege	3052	powershell.exe
Token: SeDebugPrivilege	2980	powershell.exe
Token: SeSystemEnvironmentPrivilege	2552	csrss.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3384 wrote to memory of 4796	3384	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe	80
PID 3384 wrote to memory of 4796	3384	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe	80
PID 3384 wrote to memory of 4796	3384	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe	80
PID 4760 wrote to memory of 4948	4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe	86
PID 4760 wrote to memory of 4948	4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe	86
PID 4760 wrote to memory of 4948	4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe	86
PID 4760 wrote to memory of 3768	4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe	88
PID 4760 wrote to memory of 3768	4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe	88
PID 3768 wrote to memory of 488	3768	cmd.exe	90
PID 3768 wrote to memory of 488	3768	cmd.exe	90
PID 4760 wrote to memory of 556	4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe	91
PID 4760 wrote to memory of 556	4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe	91
PID 4760 wrote to memory of 556	4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe	91
PID 4760 wrote to memory of 4764	4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe	93
PID 4760 wrote to memory of 4764	4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe	93
PID 4760 wrote to memory of 4764	4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe	93
PID 4760 wrote to memory of 2552	4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe	95
PID 4760 wrote to memory of 2552	4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe	95
PID 4760 wrote to memory of 2552	4760	c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe	95
PID 2552 wrote to memory of 4704	2552	csrss.exe	96
PID 2552 wrote to memory of 4704	2552	csrss.exe	96
PID 2552 wrote to memory of 4704	2552	csrss.exe	96
PID 2552 wrote to memory of 3052	2552	csrss.exe	102
PID 2552 wrote to memory of 3052	2552	csrss.exe	102
PID 2552 wrote to memory of 3052	2552	csrss.exe	102
PID 2552 wrote to memory of 2980	2552	csrss.exe	104
PID 2552 wrote to memory of 2980	2552	csrss.exe	104
PID 2552 wrote to memory of 2980	2552	csrss.exe	104
PID 2552 wrote to memory of 4416	2552	csrss.exe	106
PID 2552 wrote to memory of 4416	2552	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\c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
"C:\Users\Admin\AppData\Local\Temp\c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3384
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4796
- C:\Users\Admin\AppData\Local\Temp\c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.exe
  "C:\Users\Admin\AppData\Local\Temp\c3ed6e2d4fc8cee49d715dd1009eeb604ce855215af5bf25bc926a9a79f7f090.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:4760
- - 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:4948
- - 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:3768
  - - 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:488
- - 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:556
- - 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:4764
- - 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:2552
  - - 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:4704
  - - 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:2820
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:2344
  - - 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:3052
  - - 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:2980
  - - 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:4416
  - - 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:396

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

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Downloads

__PSScriptPolicyTest_mdylesrc.yim.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mdylesrc.yim.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 e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9
MD5 ac4917a885cf6050b1a483e4bc4d2ea5
SHA1 b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f
SHA512 092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d
MD5 SHA1 SHA512

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