glupteba | cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a

Analysis

max time kernel
36s
max time network
140s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
15/05/2024, 18:09

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General

Target
cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Size 4.1MB
Sample240515-wry6mada99
SHA256 cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a
MD5 73aeda66150b96d5a58ca07b072740e3
SHA1 2f5753e8a5c46b3bc28cfc95a487b11e22a3498e
SHA512 7123d02b1321124cb2e52a1f06e273485e65e8ee8e85405cf99464e49dc2dc54c6321bfc6170cdc5228b76fe5ed732ad75977f0fadade48602df1fcd525211ba
SSDEEP 98304:QoKALZtLSnhBaG13jSGzI9y04m/Xf7c/d7YDSGfJg5NEka2Q+gI:QC1IraEjIw04m/Xfo4a5yka2Q+gI
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion execution loader persistence upx

Malware Config

Signatures

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

Glupteba payload 15 IoCs

resource	yara_rule
behavioral2/memory/4908-2-0x0000000004D20000-0x000000000560B000-memory.dmp	family_glupteba
behavioral2/memory/4908-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4908-52-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/4908-54-0x0000000004D20000-0x000000000560B000-memory.dmp	family_glupteba
behavioral2/memory/4908-101-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/2368-100-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/2368-130-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1676-204-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1676-216-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1676-220-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1676-224-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1676-228-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1676-232-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1676-236-0x0000000000400000-0x0000000002B0B000-memory.dmp	family_glupteba
behavioral2/memory/1676-240-0x0000000000400000-0x0000000002B0B000-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
916	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
1676	csrss.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002a9d5-207.dat	upx
behavioral2/memory/3828-208-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/1636-211-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/3828-213-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/1636-219-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/1636-226-0x0000000000400000-0x00000000008DF000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1230210488-3096403634-4129516247-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.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

Drops file in System32 directory 6 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

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	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
File created	C:\Windows\rss\csrss.exe	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe

Launches sc.exe 1 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
992	sc.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2664	powershell.exe
3844	powershell.exe
4892	powershell.exe
2992	powershell.exe
2132	powershell.exe
3348	powershell.exe
2288	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
3068	schtasks.exe
2708	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
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\ProxyBypass = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.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,-1662 = "Bahia Standard Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.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\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	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,-222 = "Alaskan Standard Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\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,-2431 = "Cuba Daylight Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.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,-104 = "Central Brazilian Daylight Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1722 = "Libya Standard Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-691 = "Tasmania Daylight Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.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,-142 = "Canada Central Standard Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.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,-202 = "US Mountain Standard Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2892 = "Sudan Standard Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.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,-542 = "Myanmar Standard Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1892 = "Russia TZ 3 Standard Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.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,-82 = "Atlantic Standard Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-871 = "Pakistan Daylight Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.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,-352 = "FLE Standard Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	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\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.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,-334 = "Jordan Daylight Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.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\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-242 = "Samoa Standard Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	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,-1862 = "Russia TZ 6 Standard Time"	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
2664	powershell.exe
2664	powershell.exe
4908	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
4908	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
3844	powershell.exe
3844	powershell.exe
2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
4892	powershell.exe
4892	powershell.exe
2992	powershell.exe
2992	powershell.exe
2132	powershell.exe
2132	powershell.exe
3348	powershell.exe
3348	powershell.exe
2288	powershell.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2664	powershell.exe
Token: SeDebugPrivilege	4908	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Token: SeImpersonatePrivilege	4908	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
Token: SeDebugPrivilege	3844	powershell.exe
Token: SeDebugPrivilege	4892	powershell.exe
Token: SeDebugPrivilege	2992	powershell.exe
Token: SeDebugPrivilege	2132	powershell.exe
Token: SeDebugPrivilege	3348	powershell.exe
Token: SeDebugPrivilege	2288	powershell.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 4908 wrote to memory of 2664	4908	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe	83
PID 4908 wrote to memory of 2664	4908	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe	83
PID 4908 wrote to memory of 2664	4908	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe	83
PID 2368 wrote to memory of 3844	2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe	88
PID 2368 wrote to memory of 3844	2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe	88
PID 2368 wrote to memory of 3844	2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe	88
PID 2368 wrote to memory of 1012	2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe	90
PID 2368 wrote to memory of 1012	2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe	90
PID 1012 wrote to memory of 916	1012	cmd.exe	92
PID 1012 wrote to memory of 916	1012	cmd.exe	92
PID 2368 wrote to memory of 4892	2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe	93
PID 2368 wrote to memory of 4892	2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe	93
PID 2368 wrote to memory of 4892	2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe	93
PID 2368 wrote to memory of 2992	2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe	95
PID 2368 wrote to memory of 2992	2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe	95
PID 2368 wrote to memory of 2992	2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe	95
PID 2368 wrote to memory of 1676	2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe	97
PID 2368 wrote to memory of 1676	2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe	97
PID 2368 wrote to memory of 1676	2368	cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe	97
PID 1676 wrote to memory of 2132	1676	csrss.exe	98
PID 1676 wrote to memory of 2132	1676	csrss.exe	98
PID 1676 wrote to memory of 2132	1676	csrss.exe	98
PID 1676 wrote to memory of 3348	1676	csrss.exe	104
PID 1676 wrote to memory of 3348	1676	csrss.exe	104
PID 1676 wrote to memory of 3348	1676	csrss.exe	104
PID 1676 wrote to memory of 2288	1676	csrss.exe	106
PID 1676 wrote to memory of 2288	1676	csrss.exe	106
PID 1676 wrote to memory of 2288	1676	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\cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
"C:\Users\Admin\AppData\Local\Temp\cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4908
- 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:2664
- C:\Users\Admin\AppData\Local\Temp\cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.exe
  "C:\Users\Admin\AppData\Local\Temp\cfb4ceb65b0205b326991a4e293eaffec8d80a0eddcf1e409b904fc7caf55c6a.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:2368
- - 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:3844
- - 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:1012
  - - 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:916
- - 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:4892
- - 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:2992
- - C:\Windows\rss\csrss.exe
    C:\Windows\rss\csrss.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:1676
  - - 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:2132
  - - 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:3068
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:1248
  - - 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:3348
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2288
  - - 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⤵
      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:2708
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      PID:3828
    - - 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⤵
        
        PID:4608
      - 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
        
        PID:992

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
PID:1636

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

Replay Monitor

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Downloads

__PSScriptPolicyTest_gjcpv2hu.e0j.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gjcpv2hu.e0j.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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