glupteba | f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8

General

Target

f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Size

4.2MB
MD5

15851aef64e9d9a2dd03b5da99e1f943
SHA1

a07155e27a95f4534a09bda15d8187f26e27c97e
SHA256

f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8
SHA512

4442e5e0e3dc2bf6b4d3010213c914229274dc019c47569767ebe1df02c10d7ddb2a88440d3c199324750bc47ad4fd7e81fde6b506fa023c1de2c6e44c79fb07
SSDEEP

98304:75utYctoVARBg2MaaK1g5FJFgQb/OdplY5OuY4di3MrYj:742GQAvSM1iXFgQUplwOP4IMrYj

Score

10^/10

glupteba discovery dropper evasion loader persistence

Malware Config

Signatures

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

Glupteba payload 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2604-134-0x0000000004C70000-0x000000000555B000-memory.dmp	family_glupteba
behavioral1/memory/2604-173-0x0000000000400000-0x0000000002959000-memory.dmp	family_glupteba
behavioral1/memory/2604-204-0x0000000000400000-0x0000000002959000-memory.dmp	family_glupteba
behavioral1/memory/636-218-0x0000000000400000-0x0000000002959000-memory.dmp	family_glupteba
behavioral1/memory/636-267-0x0000000000400000-0x0000000002959000-memory.dmp	family_glupteba

Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1208 netsh.exe
Executes dropped EXE 1 IoCs

Processes:

csrss.exe

pid process

2488 csrss.exe

pid	process
1208	netsh.exe

pid	process
2488	csrss.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

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

Processes:

f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe

description ioc process

File opened (read-only) \??\VBoxMiniRdrDN f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe

description	ioc	process
File opened (read-only)	\??\VBoxMiniRdrDN	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe

Drops file in Windows directory 2 IoCs

Processes:

f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe

description	ioc	process
File opened for modification	C:\Windows\rss	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
File created	C:\Windows\rss\csrss.exe	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe

Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1152 schtasks.exe

pid	process
1152	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	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\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	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\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2772 = "Omsk Standard Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3142 = "South Sudan Standard Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\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\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-572 = "China Standard Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-452 = "Caucasus Standard Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	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\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-171 = "Central Daylight Time (Mexico)"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.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\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-271 = "Greenwich Daylight Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1022 = "Bangladesh Standard Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	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\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2161 = "Altai Daylight Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	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\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.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\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-272 = "Greenwich Standard Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time"	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

powershell.exef93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exepowershell.exef93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exepowershell.exepowershell.exepowershell.exepowershell.exe

pid	process
5012	powershell.exe
5012	powershell.exe
2604	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
2604	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
4644	powershell.exe
4644	powershell.exe
636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
3300	powershell.exe
3300	powershell.exe
3340	powershell.exe
3340	powershell.exe
4976	powershell.exe
4976	powershell.exe
4728	powershell.exe
4728	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

powershell.exef93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	5012	powershell.exe
Token: SeDebugPrivilege	2604	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Token: SeImpersonatePrivilege	2604	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
Token: SeDebugPrivilege	4644	powershell.exe
Token: SeDebugPrivilege	3300	powershell.exe
Token: SeDebugPrivilege	3340	powershell.exe
Token: SeDebugPrivilege	4976	powershell.exe
Token: SeDebugPrivilege	4728	powershell.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exef93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.execmd.execsrss.exe

description	pid	process	target process
PID 2604 wrote to memory of 5012	2604	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe	powershell.exe
PID 2604 wrote to memory of 5012	2604	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe	powershell.exe
PID 2604 wrote to memory of 5012	2604	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe	powershell.exe
PID 636 wrote to memory of 4644	636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe	powershell.exe
PID 636 wrote to memory of 4644	636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe	powershell.exe
PID 636 wrote to memory of 4644	636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe	powershell.exe
PID 636 wrote to memory of 4020	636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe	cmd.exe
PID 636 wrote to memory of 4020	636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe	cmd.exe
PID 4020 wrote to memory of 1208	4020	cmd.exe	netsh.exe
PID 4020 wrote to memory of 1208	4020	cmd.exe	netsh.exe
PID 636 wrote to memory of 3300	636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe	powershell.exe
PID 636 wrote to memory of 3300	636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe	powershell.exe
PID 636 wrote to memory of 3300	636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe	powershell.exe
PID 636 wrote to memory of 3340	636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe	powershell.exe
PID 636 wrote to memory of 3340	636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe	powershell.exe
PID 636 wrote to memory of 3340	636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe	powershell.exe
PID 636 wrote to memory of 2488	636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe	csrss.exe
PID 636 wrote to memory of 2488	636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe	csrss.exe
PID 636 wrote to memory of 2488	636	f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe	csrss.exe
PID 2488 wrote to memory of 4976	2488	csrss.exe	powershell.exe
PID 2488 wrote to memory of 4976	2488	csrss.exe	powershell.exe
PID 2488 wrote to memory of 4976	2488	csrss.exe	powershell.exe
PID 2488 wrote to memory of 4728	2488	csrss.exe	powershell.exe
PID 2488 wrote to memory of 4728	2488	csrss.exe	powershell.exe
PID 2488 wrote to memory of 4728	2488	csrss.exe	powershell.exe

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\f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
"C:\Users\Admin\AppData\Local\Temp\f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2604

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell -nologo -noprofile
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5012

C:\Users\Admin\AppData\Local\Temp\f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.exe
"C:\Users\Admin\AppData\Local\Temp\f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8.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:636

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:4644

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:4020

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:1208

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:3300

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:3340

C:\Windows\rss\csrss.exe
C:\Windows\rss\csrss.exe
3⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2488

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:4976

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:1152

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:1236

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:4728

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vt5zlucz.klw.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize
19KB

MD5
dbc0b6f99b5a27b8dd963456e05729cf

SHA1
227fb9898d89b518c111ac3f8e1bb22e363e91af

SHA256
77fbc89700731ab5ad9341aa5b3c707c7611d6ad667371a7b37cc558388d0e95

SHA512
05a2fa7b2890fac41949c08cb556aa5951bf76ae7e83c809deb8be73c5b737d951849c9f1a3d9d95769833e9f485427b8736fab17f1c3aee22cf7c6bb67cc520

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize
19KB

MD5
218063d4c801a04c03c96788bf0c09df

SHA1
f4343464f9a71ef52699c8eeeabf84e12977657f

SHA256
1e47178eee3a19f2c6d36623d2306b93914aa57929b0014558d2bde53af1a4a7

SHA512
93aba80890c665da18385dcef95ee33e49c26fa8b1b9c00f16489aa744fe5b61e07f17a2a1503d5cec65279c025ca5d8d23246c92ed9a85607340f888e607be8

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize
19KB

MD5
799e8b8b8896d5ae35c3382055cb3538

SHA1
aca6e22d02fd05b068522dac9f6ed5a8109711cf

SHA256
a65d6b116da73566686061d504e39f4afaae9b80a2f275b0d81e2f6026af322a

SHA512
ebc619df4e7574ab67049559f48991bb2cb4881bfa98e24eb2d4f63314f2b0efdc7673c468a029eb9e3d0eb58247802cf0cf1e707c082ca7f14fa3f1a09e1a42

Download Submit
C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize
19KB

MD5
72f53c4a6fab879f90a75a4dc60023eb

SHA1
28278585f808719d9d4dcca988a4767de43cd261

SHA256
e8be46d36e7d12ce6d6de5c0eae2b1b5f0d8b99ade667223b2645aef05d6117d

SHA512
7e60928601dfc1eb0e134a3dba2756553c2acbed599877c4f5d949f23261f19f0c22818cf1aa1b4e060054bf20a43e9f352d39f0e81bdebd03da9637b0f21776

Download Submit
C:\Windows\rss\csrss.exe
Filesize
4.2MB

MD5
15851aef64e9d9a2dd03b5da99e1f943

SHA1
a07155e27a95f4534a09bda15d8187f26e27c97e

SHA256
f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8

SHA512
4442e5e0e3dc2bf6b4d3010213c914229274dc019c47569767ebe1df02c10d7ddb2a88440d3c199324750bc47ad4fd7e81fde6b506fa023c1de2c6e44c79fb07

Download Submit
C:\Windows\rss\csrss.exe
Filesize
4.2MB

MD5
15851aef64e9d9a2dd03b5da99e1f943

SHA1
a07155e27a95f4534a09bda15d8187f26e27c97e

SHA256
f93570e38218ed19f5bb11f232309d26fe71fd0b2b108aa1e273cacec9c68dd8

SHA512
4442e5e0e3dc2bf6b4d3010213c914229274dc019c47569767ebe1df02c10d7ddb2a88440d3c199324750bc47ad4fd7e81fde6b506fa023c1de2c6e44c79fb07

Download Submit
memory/636-218-0x0000000000400000-0x0000000002959000-memory.dmp

Filesize
37.3MB

Download
memory/636-267-0x0000000000400000-0x0000000002959000-memory.dmp

Filesize
37.3MB

Download
memory/2604-134-0x0000000004C70000-0x000000000555B000-memory.dmp

Filesize
8.9MB

Download
memory/2604-173-0x0000000000400000-0x0000000002959000-memory.dmp

Filesize
37.3MB

Download
memory/2604-204-0x0000000000400000-0x0000000002959000-memory.dmp

Filesize
37.3MB

Download
memory/3300-233-0x000000007FBF0000-0x000000007FC00000-memory.dmp

Filesize
64KB

Download
memory/3300-223-0x00000000709E0000-0x0000000070D34000-memory.dmp

Filesize
3.3MB

Download
memory/3300-222-0x0000000070260000-0x00000000702AC000-memory.dmp

Filesize
304KB

Download
memory/3300-221-0x0000000002730000-0x0000000002740000-memory.dmp

Filesize
64KB

Download
memory/3300-220-0x0000000002730000-0x0000000002740000-memory.dmp

Filesize
64KB

Download
memory/3300-219-0x0000000002730000-0x0000000002740000-memory.dmp

Filesize
64KB

Download
memory/3340-249-0x00000000045E0000-0x00000000045F0000-memory.dmp

Filesize
64KB

Download
memory/3340-236-0x00000000045E0000-0x00000000045F0000-memory.dmp

Filesize
64KB

Download
memory/3340-251-0x000000007F840000-0x000000007F850000-memory.dmp

Filesize
64KB

Download
memory/3340-250-0x00000000703E0000-0x0000000070734000-memory.dmp

Filesize
3.3MB

Download
memory/3340-248-0x0000000070260000-0x00000000702AC000-memory.dmp

Filesize
304KB

Download
memory/3340-237-0x00000000045E0000-0x00000000045F0000-memory.dmp

Filesize
64KB

Download
memory/4644-203-0x000000007FC00000-0x000000007FC10000-memory.dmp

Filesize
64KB

Download
memory/4644-180-0x0000000004570000-0x0000000004580000-memory.dmp

Filesize
64KB

Download
memory/4644-190-0x0000000004570000-0x0000000004580000-memory.dmp

Filesize
64KB

Download
memory/4644-191-0x0000000004570000-0x0000000004580000-memory.dmp

Filesize
64KB

Download
memory/4644-192-0x0000000070260000-0x00000000702AC000-memory.dmp

Filesize
304KB

Download
memory/4644-193-0x00000000709E0000-0x0000000070D34000-memory.dmp

Filesize
3.3MB

Download
memory/4728-306-0x0000000002F40000-0x0000000002F50000-memory.dmp

Filesize
64KB

Download
memory/4728-308-0x0000000070910000-0x0000000070C64000-memory.dmp

Filesize
3.3MB

Download
memory/4728-307-0x0000000070180000-0x00000000701CC000-memory.dmp

Filesize
304KB

Download
memory/4728-318-0x0000000002F40000-0x0000000002F50000-memory.dmp

Filesize
64KB

Download
memory/4728-305-0x0000000002F40000-0x0000000002F50000-memory.dmp

Filesize
64KB

Download
memory/4976-279-0x0000000004830000-0x0000000004840000-memory.dmp

Filesize
64KB

Download
memory/4976-292-0x000000007F060000-0x000000007F070000-memory.dmp

Filesize
64KB

Download
memory/4976-291-0x0000000004830000-0x0000000004840000-memory.dmp

Filesize
64KB

Download
memory/4976-281-0x00000000703E0000-0x0000000070734000-memory.dmp

Filesize
3.3MB

Download
memory/4976-280-0x0000000070260000-0x00000000702AC000-memory.dmp

Filesize
304KB

Download
memory/4976-278-0x0000000004830000-0x0000000004840000-memory.dmp

Filesize
64KB

Download
memory/5012-157-0x0000000007510000-0x0000000007542000-memory.dmp

Filesize
200KB

Download
memory/5012-176-0x00000000076F0000-0x00000000076F8000-memory.dmp

Filesize
32KB

Download
memory/5012-141-0x0000000005800000-0x0000000005866000-memory.dmp

Filesize
408KB

Download
memory/5012-174-0x00000000076B0000-0x00000000076BE000-memory.dmp

Filesize
56KB

Download
memory/5012-170-0x00000000074F0000-0x000000000750E000-memory.dmp

Filesize
120KB

Download
memory/5012-140-0x0000000005790000-0x00000000057F6000-memory.dmp

Filesize
408KB

Download
memory/5012-172-0x0000000007750000-0x00000000077E6000-memory.dmp

Filesize
600KB

Download
memory/5012-139-0x00000000050B0000-0x00000000050D2000-memory.dmp

Filesize
136KB

Download
memory/5012-138-0x0000000004B20000-0x0000000004B30000-memory.dmp

Filesize
64KB

Download
memory/5012-137-0x0000000004B20000-0x0000000004B30000-memory.dmp

Filesize
64KB

Download
memory/5012-136-0x0000000005160000-0x0000000005788000-memory.dmp

Filesize
6.2MB

Download
memory/5012-175-0x0000000007700000-0x000000000771A000-memory.dmp

Filesize
104KB

Download
memory/5012-151-0x0000000005F90000-0x0000000005FAE000-memory.dmp

Filesize
120KB

Download
memory/5012-152-0x0000000006550000-0x0000000006594000-memory.dmp

Filesize
272KB

Download
memory/5012-153-0x00000000072C0000-0x0000000007336000-memory.dmp

Filesize
472KB

Download
memory/5012-154-0x00000000079C0000-0x000000000803A000-memory.dmp

Filesize
6.5MB

Download
memory/5012-156-0x0000000004B20000-0x0000000004B30000-memory.dmp

Filesize
64KB

Download
memory/5012-135-0x0000000002650000-0x0000000002686000-memory.dmp

Filesize
216KB

Download
memory/5012-155-0x0000000007360000-0x000000000737A000-memory.dmp

Filesize
104KB

Download
memory/5012-159-0x000000007F9F0000-0x000000007FA00000-memory.dmp

Filesize
64KB

Download
memory/5012-158-0x0000000070260000-0x00000000702AC000-memory.dmp

Filesize
304KB

Download
memory/5012-160-0x0000000070400000-0x0000000070754000-memory.dmp

Filesize
3.3MB

Download
memory/5012-171-0x0000000007640000-0x000000000764A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads