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Analysis
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max time kernel
145s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
12/10/2023, 13:43
Static task
static1
Behavioral task
behavioral1
Sample
31839b57a4f11171d6abc8bbc4451ee4.exe
Resource
win7-20230831-en
General
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Target
31839b57a4f11171d6abc8bbc4451ee4.exe
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Size
4.1MB
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MD5
637f73095de9f62dc6fcfbe9b3f6d3d6
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SHA1
708771d9413e7df69189d2a0c283ec72bd63d99e
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SHA256
6a678e471f24d7560be7cda7a49a34b4f0c2cb279b779984e5f002be3dfacf1d
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SHA512
00d4d05c7b894d4c52dcbc75d555c76f966defed1934747ffe4a29d8dc1b426fad021a02a5e221dd583ac86d67661a6b9cddde13ad1465546439f52ed567aeb5
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SSDEEP
98304:WTF3/yifTDOs5MvtF5aDUw1VUT2eh5Xz8ME4AwzfxrJ39J5BatN7SrR:k36sDXaf5tw1VUTLXYBefdzITOrR
Malware Config
Signatures
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Glupteba payload 20 IoCs
resource yara_rule behavioral2/memory/4852-2-0x0000000003030000-0x000000000391B000-memory.dmp family_glupteba behavioral2/memory/4852-3-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba behavioral2/memory/4852-27-0x0000000003030000-0x000000000391B000-memory.dmp family_glupteba behavioral2/memory/4852-33-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba behavioral2/memory/4852-49-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba behavioral2/memory/4852-61-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba behavioral2/memory/2108-64-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba behavioral2/memory/2108-97-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba behavioral2/memory/2108-100-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba behavioral2/memory/2108-160-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba behavioral2/memory/3820-225-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba behavioral2/memory/3820-262-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba behavioral2/memory/3820-271-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba behavioral2/memory/3820-273-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba behavioral2/memory/3820-275-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba behavioral2/memory/3820-277-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba behavioral2/memory/3820-279-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba behavioral2/memory/3820-281-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba behavioral2/memory/3820-283-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba behavioral2/memory/3820-292-0x0000000000400000-0x0000000000D1B000-memory.dmp family_glupteba -
Modifies Windows Firewall 1 TTPs 1 IoCs
pid Process 4584 netsh.exe -
Executes dropped EXE 5 IoCs
pid Process 3820 csrss.exe 980 injector.exe 2576 windefender.exe 4676 windefender.exe 2260 f801950a962ddba14caaa44bf084b55c.exe -
resource yara_rule behavioral2/files/0x00080000000231fa-265.dat upx behavioral2/files/0x00080000000231fa-267.dat upx behavioral2/files/0x00080000000231fa-268.dat upx behavioral2/memory/2576-270-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/4676-272-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/4676-276-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/4676-282-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/files/0x00080000000231fc-288.dat upx behavioral2/files/0x00080000000231fc-290.dat upx behavioral2/memory/4676-291-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/2260-293-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral2/memory/2260-295-0x0000000000400000-0x0000000000C25000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3027552071-446050021-1254071215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 31839b57a4f11171d6abc8bbc4451ee4.exe Set value (str) \REGISTRY\USER\S-1-5-21-3027552071-446050021-1254071215-1000\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.
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Manipulates WinMonFS driver. 1 IoCs
Roottkits write to WinMonFS to hide directories/files from being detected.
description ioc Process File opened for modification \??\WinMonFS csrss.exe -
Drops file in System32 directory 7 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe -
Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.
description ioc Process File opened (read-only) \??\VBoxMiniRdrDN 31839b57a4f11171d6abc8bbc4451ee4.exe -
Drops file in Windows directory 4 IoCs
description ioc Process File created C:\Windows\windefender.exe csrss.exe File opened for modification C:\Windows\windefender.exe csrss.exe File opened for modification C:\Windows\rss 31839b57a4f11171d6abc8bbc4451ee4.exe File created C:\Windows\rss\csrss.exe 31839b57a4f11171d6abc8bbc4451ee4.exe -
Launches sc.exe 1 IoCs
Sc.exe is a Windows utlilty to control services on the system.
pid Process 2712 sc.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4820 schtasks.exe 1792 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
description ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time" 31839b57a4f11171d6abc8bbc4451ee4.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\1e\52C64B7E\@tzres.dll,-434 = "Georgian Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-342 = "Egypt Standard Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-105 = "Central Brazilian Standard Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1722 = "Libya Standard Time" 31839b57a4f11171d6abc8bbc4451ee4.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\@tzres.dll,-2531 = "Chatham Islands Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-351 = "FLE Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-431 = "Iran Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-2062 = "North Korea Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2491 = "Aus Central W. Daylight Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-792 = "SA Western Standard Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs 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\@tzres.dll,-142 = "Canada Central Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-602 = "Taipei Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-691 = "Tasmania Daylight Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs 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\1e\52C64B7E\@tzres.dll,-501 = "Nepal Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-92 = "Pacific SA Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-202 = "US Mountain Standard Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-511 = "Central Asia Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-791 = "SA Western Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-202 = "US Mountain Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-121 = "SA Pacific Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-502 = "Nepal Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-1872 = "Russia TZ 7 Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-41 = "E. South America Daylight Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-152 = "Central America Standard Time" windefender.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,-2062 = "North Korea Standard Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-2411 = "Marquesas Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA 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\1e\52C64B7E\@tzres.dll,-31 = "Mid-Atlantic Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-1832 = "Russia TZ 2 Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-632 = "Tokyo Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-732 = "Fiji Standard Time" 31839b57a4f11171d6abc8bbc4451ee4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-132 = "US Eastern Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\@tzres.dll,-462 = "Afghanistan Standard Time" windefender.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1500 powershell.exe 1500 powershell.exe 4852 31839b57a4f11171d6abc8bbc4451ee4.exe 4852 31839b57a4f11171d6abc8bbc4451ee4.exe 4444 powershell.exe 4444 powershell.exe 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 980 powershell.exe 980 powershell.exe 4812 powershell.exe 4812 powershell.exe 3404 powershell.exe 3404 powershell.exe 4288 powershell.exe 4288 powershell.exe 3208 powershell.exe 3208 powershell.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 3820 csrss.exe 3820 csrss.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 3820 csrss.exe 3820 csrss.exe 980 injector.exe 980 injector.exe 3820 csrss.exe 3820 csrss.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe 980 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
description pid Process Token: SeDebugPrivilege 1500 powershell.exe Token: SeDebugPrivilege 4852 31839b57a4f11171d6abc8bbc4451ee4.exe Token: SeImpersonatePrivilege 4852 31839b57a4f11171d6abc8bbc4451ee4.exe Token: SeDebugPrivilege 4444 powershell.exe Token: SeDebugPrivilege 980 powershell.exe Token: SeDebugPrivilege 4812 powershell.exe Token: SeDebugPrivilege 3404 powershell.exe Token: SeDebugPrivilege 4288 powershell.exe Token: SeDebugPrivilege 3208 powershell.exe Token: SeSystemEnvironmentPrivilege 3820 csrss.exe Token: SeSecurityPrivilege 2712 sc.exe Token: SeSecurityPrivilege 2712 sc.exe -
Suspicious use of WriteProcessMemory 39 IoCs
description pid Process procid_target PID 4852 wrote to memory of 1500 4852 31839b57a4f11171d6abc8bbc4451ee4.exe 84 PID 4852 wrote to memory of 1500 4852 31839b57a4f11171d6abc8bbc4451ee4.exe 84 PID 4852 wrote to memory of 1500 4852 31839b57a4f11171d6abc8bbc4451ee4.exe 84 PID 2108 wrote to memory of 4444 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 94 PID 2108 wrote to memory of 4444 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 94 PID 2108 wrote to memory of 4444 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 94 PID 2108 wrote to memory of 4648 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 97 PID 2108 wrote to memory of 4648 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 97 PID 4648 wrote to memory of 4584 4648 cmd.exe 99 PID 4648 wrote to memory of 4584 4648 cmd.exe 99 PID 2108 wrote to memory of 980 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 100 PID 2108 wrote to memory of 980 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 100 PID 2108 wrote to memory of 980 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 100 PID 2108 wrote to memory of 4812 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 102 PID 2108 wrote to memory of 4812 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 102 PID 2108 wrote to memory of 4812 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 102 PID 2108 wrote to memory of 3820 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 105 PID 2108 wrote to memory of 3820 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 105 PID 2108 wrote to memory of 3820 2108 31839b57a4f11171d6abc8bbc4451ee4.exe 105 PID 3820 wrote to memory of 3404 3820 csrss.exe 106 PID 3820 wrote to memory of 3404 3820 csrss.exe 106 PID 3820 wrote to memory of 3404 3820 csrss.exe 106 PID 3820 wrote to memory of 4288 3820 csrss.exe 112 PID 3820 wrote to memory of 4288 3820 csrss.exe 112 PID 3820 wrote to memory of 4288 3820 csrss.exe 112 PID 3820 wrote to memory of 3208 3820 csrss.exe 114 PID 3820 wrote to memory of 3208 3820 csrss.exe 114 PID 3820 wrote to memory of 3208 3820 csrss.exe 114 PID 3820 wrote to memory of 980 3820 csrss.exe 116 PID 3820 wrote to memory of 980 3820 csrss.exe 116 PID 2576 wrote to memory of 3968 2576 windefender.exe 122 PID 2576 wrote to memory of 3968 2576 windefender.exe 122 PID 2576 wrote to memory of 3968 2576 windefender.exe 122 PID 3968 wrote to memory of 2712 3968 cmd.exe 123 PID 3968 wrote to memory of 2712 3968 cmd.exe 123 PID 3968 wrote to memory of 2712 3968 cmd.exe 123 PID 3820 wrote to memory of 2260 3820 csrss.exe 126 PID 3820 wrote to memory of 2260 3820 csrss.exe 126 PID 3820 wrote to memory of 2260 3820 csrss.exe 126 -
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.
Processes
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C:\Users\Admin\AppData\Local\Temp\31839b57a4f11171d6abc8bbc4451ee4.exe"C:\Users\Admin\AppData\Local\Temp\31839b57a4f11171d6abc8bbc4451ee4.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4852 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1500
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C:\Users\Admin\AppData\Local\Temp\31839b57a4f11171d6abc8bbc4451ee4.exe"C:\Users\Admin\AppData\Local\Temp\31839b57a4f11171d6abc8bbc4451ee4.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:2108 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4444
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C:\Windows\system32\cmd.exeC:\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:4648 -
C:\Windows\system32\netsh.exenetsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes4⤵
- Modifies Windows Firewall
PID:4584
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:980
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4812
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3820 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3404
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:4820
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:2524
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4288
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3208
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeC:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:980
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:1792
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C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2576 -
C:\Windows\SysWOW64\cmd.execmd.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⤵
- Suspicious use of WriteProcessMemory
PID:3968 -
C:\Windows\SysWOW64\sc.exesc 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
- Suspicious use of AdjustPrivilegeToken
PID:2712
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C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exeC:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe4⤵
- Executes dropped EXE
PID:2260 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn "csrss" /f5⤵PID:4756
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn "ScheduledUpdate" /f5⤵PID:3920
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4676
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
3.2MB
MD5f801950a962ddba14caaa44bf084b55c
SHA17cadc9076121297428442785536ba0df2d4ae996
SHA256c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f
SHA5124183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5
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Filesize
3.2MB
MD5f801950a962ddba14caaa44bf084b55c
SHA17cadc9076121297428442785536ba0df2d4ae996
SHA256c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f
SHA5124183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5
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Filesize
99KB
MD509031a062610d77d685c9934318b4170
SHA1880f744184e7774f3d14c1bb857e21cc7fe89a6d
SHA256778bd69af403df3c4e074c31b3850d71bf0e64524bea4272a802ca9520b379dd
SHA5129a276e1f0f55d35f2bf38eb093464f7065bdd30a660e6d1c62eed5e76d1fb2201567b89d9ae65d2d89dc99b142159e36fb73be8d5e08252a975d50544a7cda27
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Filesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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Filesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize2KB
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD520d7d8cb779dcdf57cc43c85dbcc97f0
SHA15e0a87c9e31293affbe0f3ea328c90d34f53a45e
SHA256efb46ba68c9d5d5a25dc1e1c6bc0ef6de5b87615c9057f4d617de3a71221a3ee
SHA512f83930b4094f484b481be44e7818d22f1165e98b5ce88b0e9752edcdf5ec07d78eb71b05b70a96dd8147d40e3494743e13e50cff23185d7e54bb22c4c850091b
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5969560f59611b25fc273b03539c083ff
SHA1674fabd894def1d5139cdd54d70ea8aa6af91ebf
SHA256531814da2e35f4fa52c7b3f8c79256f7db9a393c1279e4102435107979df055f
SHA5124a22aa94a609bac1fe265ad0082ba21c035523d3f31b43ac43d019b6fd4654c2b240b0b0f18ffa11bb6f15148dfad422e8756296a7fbcbf3ded330c06c3c3b4f
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5600914d1945ae55e4b7fb60510d866c0
SHA18ce385a8da77d29587cad19dc42ddc57ee286523
SHA25635e8d0fd2de97d4e5d769ae8d7601e1d6df2e4fa521cf854696739adb87d68c0
SHA51270b18cf5db14d742270ac8fe7477940d7ed18c09eb8ea74aea33c3441e8b08019252b4855798708fd9bd128b6e86c5462a968d3ecd94f708c8ed4b8a005affbd
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD56d65ca0a4c1794e13624934ddddc7d6c
SHA13dac937e99c7e951ca0d0a394025b6dd6f64b5eb
SHA256e46d8f3436ecd691a40348fbfc3de4324573bda51bef82f3c4a000ad52853329
SHA5126e6fb5c272dd56920d6ff9adc42ce2381e228118b81c84a4c8decb4030627af003474fdb600add2331eeb06eee30591285e2a06ef64e465e39e191ef42fecc53
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD52c45ba7e9a9511962b35e4a0e325d559
SHA17d8592966d0a3416836c537364c94ed8a3a00495
SHA2565539680904171287e4a98247862d8b735e79003c1bab3ce24d2fca7d5f62ef62
SHA512e2a46b09cb726cc7741cda30027f123959665498c924b4f2c030b8a5786a2cc2c13634437390994fb22fc0f52631dafee897334b6fa7a09957141abe2471beef
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Filesize
4.1MB
MD5637f73095de9f62dc6fcfbe9b3f6d3d6
SHA1708771d9413e7df69189d2a0c283ec72bd63d99e
SHA2566a678e471f24d7560be7cda7a49a34b4f0c2cb279b779984e5f002be3dfacf1d
SHA51200d4d05c7b894d4c52dcbc75d555c76f966defed1934747ffe4a29d8dc1b426fad021a02a5e221dd583ac86d67661a6b9cddde13ad1465546439f52ed567aeb5
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Filesize
4.1MB
MD5637f73095de9f62dc6fcfbe9b3f6d3d6
SHA1708771d9413e7df69189d2a0c283ec72bd63d99e
SHA2566a678e471f24d7560be7cda7a49a34b4f0c2cb279b779984e5f002be3dfacf1d
SHA51200d4d05c7b894d4c52dcbc75d555c76f966defed1934747ffe4a29d8dc1b426fad021a02a5e221dd583ac86d67661a6b9cddde13ad1465546439f52ed567aeb5
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec