Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
19-05-2024 14:14
Static task
static1
Behavioral task
behavioral1
Sample
fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe
Resource
win10v2004-20240508-en
General
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Target
fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe
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Size
4.1MB
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MD5
0381ec443839760ba8c41ce4633a1179
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SHA1
9dc2f870549a32f656ed76e3b7e337c565a6f1d8
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SHA256
fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996
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SHA512
45f5c6249adefebd9be488fcbe4555b8541f4acae0a50c5004432be2b91eeba2546cee4412142fa60e2f67ffb85f64a0ae70c4b8398455ccfb4ed087c69930dc
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SSDEEP
98304:IuOdAWE/bfbxbxBimum48oJjLrUZhWcgWy75MTps2CObMUZCzBSD:IuOpIddBi3V8Ojm7gWylM939Cm
Malware Config
Signatures
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Glupteba payload 19 IoCs
Processes:
resource yara_rule behavioral1/memory/4756-2-0x0000000004900000-0x00000000051EB000-memory.dmp family_glupteba behavioral1/memory/4756-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/4756-104-0x0000000004900000-0x00000000051EB000-memory.dmp family_glupteba behavioral1/memory/4756-103-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral1/memory/2488-132-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral1/memory/4756-171-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/4744-210-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral1/memory/4744-226-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral1/memory/4744-228-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral1/memory/4744-231-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral1/memory/4744-235-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral1/memory/4744-238-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral1/memory/4744-240-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral1/memory/4744-243-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral1/memory/4744-247-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral1/memory/4744-250-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral1/memory/4744-252-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral1/memory/4744-255-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral1/memory/4744-259-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid Process 2620 netsh.exe -
Executes dropped EXE 4 IoCs
Processes:
csrss.exeinjector.exewindefender.exewindefender.exepid Process 4744 csrss.exe 404 injector.exe 4924 windefender.exe 2124 windefender.exe -
Processes:
resource yara_rule behavioral1/files/0x000a00000002339b-219.dat upx behavioral1/memory/4924-220-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral1/memory/2124-223-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral1/memory/4924-225-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral1/memory/2124-229-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral1/memory/2124-234-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
csrss.exefdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" csrss.exe Set value (str) \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.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.
Processes:
csrss.exedescription ioc Process File opened for modification \??\WinMonFS csrss.exe -
Drops file in System32 directory 7 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc Process File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe -
Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.
Processes:
fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exedescription ioc Process File opened (read-only) \??\VBoxMiniRdrDN fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe -
Drops file in Windows directory 4 IoCs
Processes:
fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.execsrss.exedescription ioc Process File opened for modification C:\Windows\rss fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe File created C:\Windows\rss\csrss.exe fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe File created C:\Windows\windefender.exe csrss.exe File opened for modification C:\Windows\windefender.exe csrss.exe -
Launches sc.exe 1 IoCs
Sc.exe is a Windows utlilty to control services on the system.
Processes:
sc.exepid Process 1448 sc.exe -
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid Process 5052 powershell.exe 5072 powershell.exe 2792 powershell.exe 4348 powershell.exe 4088 powershell.exe 4728 powershell.exe 3420 powershell.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid Process 4908 schtasks.exe 1816 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
windefender.exepowershell.exepowershell.exepowershell.exefdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exepowershell.exepowershell.exepowershell.exedescription ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1871 = "Russia TZ 7 Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-392 = "Arab Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2632 = "Norfolk Standard Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-272 = "Greenwich Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2492 = "Aus Central W. Standard Time" fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time" fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-91 = "Pacific SA Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-301 = "Romance Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time" fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2001 = "Cabo Verde Daylight Time" fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time" fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time" fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-51 = "Greenland Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-752 = "Tonga Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-292 = "Central European Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-672 = "AUS Eastern Standard Time" fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-601 = "Taipei Daylight Time" fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates 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\2a\52C64B7E\@tzres.dll,-651 = "AUS Central Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-142 = "Canada Central Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-152 = "Central America Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3051 = "Qyzylorda Daylight Time" fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time" fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-12 = "Azores Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2161 = "Altai Daylight Time" fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time" fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time" fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2431 = "Cuba Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1831 = "Russia TZ 2 Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-382 = "South Africa Standard Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2432 = "Cuba Standard Time" fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1841 = "Russia TZ 4 Daylight Time" fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-892 = "Morocco Standard Time" fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-232 = "Hawaiian Standard Time" windefender.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exefdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exepowershell.exefdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid Process 4088 powershell.exe 4088 powershell.exe 4756 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 4756 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 4728 powershell.exe 4728 powershell.exe 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 3420 powershell.exe 3420 powershell.exe 3420 powershell.exe 5052 powershell.exe 5052 powershell.exe 5052 powershell.exe 5072 powershell.exe 5072 powershell.exe 2792 powershell.exe 2792 powershell.exe 4348 powershell.exe 4348 powershell.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 4744 csrss.exe 4744 csrss.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 4744 csrss.exe 4744 csrss.exe 404 injector.exe 404 injector.exe 4744 csrss.exe 4744 csrss.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe 404 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
powershell.exefdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exesc.exedescription pid Process Token: SeDebugPrivilege 4088 powershell.exe Token: SeDebugPrivilege 4756 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Token: SeImpersonatePrivilege 4756 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe Token: SeDebugPrivilege 4728 powershell.exe Token: SeDebugPrivilege 3420 powershell.exe Token: SeDebugPrivilege 5052 powershell.exe Token: SeDebugPrivilege 5072 powershell.exe Token: SeDebugPrivilege 2792 powershell.exe Token: SeDebugPrivilege 4348 powershell.exe Token: SeSystemEnvironmentPrivilege 4744 csrss.exe Token: SeSecurityPrivilege 1448 sc.exe Token: SeSecurityPrivilege 1448 sc.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exefdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.execmd.execsrss.exewindefender.execmd.exedescription pid Process procid_target PID 4756 wrote to memory of 4088 4756 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 84 PID 4756 wrote to memory of 4088 4756 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 84 PID 4756 wrote to memory of 4088 4756 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 84 PID 2488 wrote to memory of 4728 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 95 PID 2488 wrote to memory of 4728 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 95 PID 2488 wrote to memory of 4728 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 95 PID 2488 wrote to memory of 4388 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 98 PID 2488 wrote to memory of 4388 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 98 PID 4388 wrote to memory of 2620 4388 cmd.exe 100 PID 4388 wrote to memory of 2620 4388 cmd.exe 100 PID 2488 wrote to memory of 3420 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 101 PID 2488 wrote to memory of 3420 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 101 PID 2488 wrote to memory of 3420 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 101 PID 2488 wrote to memory of 5052 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 104 PID 2488 wrote to memory of 5052 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 104 PID 2488 wrote to memory of 5052 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 104 PID 2488 wrote to memory of 4744 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 106 PID 2488 wrote to memory of 4744 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 106 PID 2488 wrote to memory of 4744 2488 fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe 106 PID 4744 wrote to memory of 5072 4744 csrss.exe 107 PID 4744 wrote to memory of 5072 4744 csrss.exe 107 PID 4744 wrote to memory of 5072 4744 csrss.exe 107 PID 4744 wrote to memory of 2792 4744 csrss.exe 113 PID 4744 wrote to memory of 2792 4744 csrss.exe 113 PID 4744 wrote to memory of 2792 4744 csrss.exe 113 PID 4744 wrote to memory of 4348 4744 csrss.exe 115 PID 4744 wrote to memory of 4348 4744 csrss.exe 115 PID 4744 wrote to memory of 4348 4744 csrss.exe 115 PID 4744 wrote to memory of 404 4744 csrss.exe 117 PID 4744 wrote to memory of 404 4744 csrss.exe 117 PID 4924 wrote to memory of 3952 4924 windefender.exe 126 PID 4924 wrote to memory of 3952 4924 windefender.exe 126 PID 4924 wrote to memory of 3952 4924 windefender.exe 126 PID 3952 wrote to memory of 1448 3952 cmd.exe 127 PID 3952 wrote to memory of 1448 3952 cmd.exe 127 PID 3952 wrote to memory of 1448 3952 cmd.exe 127 -
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\fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe"C:\Users\Admin\AppData\Local\Temp\fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4756 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4088
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C:\Users\Admin\AppData\Local\Temp\fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.exe"C:\Users\Admin\AppData\Local\Temp\fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996.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:2488 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4728
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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:4388 -
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:2620
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3420
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5052
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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:4744 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5072
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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:4908
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:3384
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2792
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4348
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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:404
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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:1816
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C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4924 -
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:3952 -
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:1448
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2124
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
1Privilege Escalation
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
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
MD53d086a433708053f9bf9523e1d87a4e8
SHA1b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28
SHA2566f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69
SHA512931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5ab5de96a53329510d7423de5e30e9018
SHA1b31672b1302f6c34cb2f96771ffebcafd07ace41
SHA256b3b49a99f1f2fd1801cd78e266c7dd368509165a7e18d9aa88ffbc650e59d002
SHA512987599ba8d574b312359429d2eebe13c41e4e85548cccbbec3485ac3c89fe042c4b847da770e6b2fb2077e2da6902c310e58049c01a03234f9462321ad8d8ca7
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5ef090b6aaa276413bd905f836fe23655
SHA1a8029b635791513c0584efad09eacaa6c1b91f9c
SHA256d3d7c0930f558f4dbc59cb35784415f7801f0001148835c9b300faecd1687e50
SHA51211d9cc1e55301f760693d84731a77b131c184e8f2381235dd88d8a6178f8d3abba88b11122f758d9a1da73dd14390821ff3628575827928535d85927eff4bc31
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5f08ff8b5f4b8ff2490599029369b5831
SHA10ad02cac798f8437dcbc81a3d93ce01584730e96
SHA256981e803c210416064f3221c022f535ef6a73c2695847d0b302e197c3d648a2c1
SHA512ff8ab73790f6edaa872303020980c872f9814088d30d3b06d45f18408482ba42429c5ca357e72814124ff7e6188836a6ee752480a42bdeeb344d328a3250af14
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD579b1a273a977660e1101048ad5ea9305
SHA1879586ae4bcc2763fdf2fadfabff303e46a97f23
SHA256478f988a6f7809b256f0701fdebbd64ab42c0d02b05cecf8a6c43e8b67e73ab6
SHA51201b41c13c0a483f2c420db11f61fb8acae0aab4220e02112ead1ec8439d99184d280aeb38c63bac1fdd7d940939f7e1b0a088599dcab32732012e8b20bbf75df
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5b1f0a3ae16882d0e22622df4f52122e1
SHA11aea57b7fa233755cc5480f0d74cd571d0b19805
SHA256f0e9b55fe263a41fbc8f6b92bec27d0df6a11234534e9eaf7ba95c7ab00cb616
SHA512dc002245737417218666ade8e3768265eff061437402f94ceea33d9896f4bda312309962e338d8b31ff46257bb0afbda09508afed899d88cbffc484f70bd855b
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Filesize
4.1MB
MD50381ec443839760ba8c41ce4633a1179
SHA19dc2f870549a32f656ed76e3b7e337c565a6f1d8
SHA256fdb99d25d929c6734692397e0cf917cf9b94e7966b7812582e897078ad3ac996
SHA51245f5c6249adefebd9be488fcbe4555b8541f4acae0a50c5004432be2b91eeba2546cee4412142fa60e2f67ffb85f64a0ae70c4b8398455ccfb4ed087c69930dc
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec