Analysis
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max time kernel
150s -
max time network
154s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
19-05-2024 20:35
Static task
static1
Behavioral task
behavioral1
Sample
31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe
Resource
win10v2004-20240508-en
General
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Target
31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe
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Size
4.1MB
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MD5
38991f5c06f1211401578fb7e5b27e84
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SHA1
33d16b11484cbf70f8e4f39722d12c8bcbe52757
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SHA256
31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7
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SHA512
b3bd06a028fc04b6ded52bca940e633d4c598fc224612a24e020795332d92a7187e0032799be674381625410673ae94f441e36c4ce2c2fec95b54c896095b5a4
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SSDEEP
98304:r7sgfTqZm7fywQIpjGUn+cmloZHued8miXbTsPufBvN2:rzgmDywQg+foZ8mw6SM
Malware Config
Signatures
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Glupteba payload 16 IoCs
Processes:
resource yara_rule behavioral2/memory/3108-2-0x0000000004A90000-0x000000000537B000-memory.dmp family_glupteba behavioral2/memory/3108-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3108-192-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4736-199-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4736-209-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4736-212-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4736-215-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4736-218-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4736-221-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4736-224-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4736-227-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4736-230-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4736-233-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4736-236-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4736-239-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4736-242-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid Process 5060 netsh.exe -
Executes dropped EXE 4 IoCs
Processes:
csrss.exeinjector.exewindefender.exewindefender.exepid Process 4736 csrss.exe 3276 injector.exe 2132 windefender.exe 1716 windefender.exe -
Processes:
resource yara_rule behavioral2/memory/2132-204-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/files/0x000200000002a9cf-203.dat upx behavioral2/memory/1716-206-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/2132-207-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/1716-210-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/1716-216-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/1716-225-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
csrss.exe31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" csrss.exe Set value (str) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.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 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 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 -
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:
31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exedescription ioc Process File opened (read-only) \??\VBoxMiniRdrDN 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe -
Drops file in Windows directory 4 IoCs
Processes:
csrss.exe31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exedescription ioc Process File opened for modification C:\Windows\windefender.exe csrss.exe File opened for modification C:\Windows\rss 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe File created C:\Windows\rss\csrss.exe 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe File created 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 3704 sc.exe -
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid Process 1256 powershell.exe 1564 powershell.exe 1624 powershell.exe 3428 powershell.exe 4516 powershell.exe 1752 powershell.exe 2676 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 4748 schtasks.exe 2588 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
powershell.exepowershell.exewindefender.exe31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-141 = "Canada Central Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-121 = "SA Pacific Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1862 = "Russia TZ 6 Standard Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-672 = "AUS Eastern Standard 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\@tzres.dll,-1021 = "Bangladesh Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-182 = "Mountain Standard Time (Mexico)" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-671 = "AUS Eastern Daylight Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3141 = "South Sudan Daylight Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-962 = "Paraguay Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1821 = "Russia TZ 1 Daylight Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2611 = "Bougainville Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1801 = "Line Islands Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2631 = "Norfolk Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-792 = "SA Western Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-602 = "Taipei Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-271 = "Greenwich Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-105 = "Central Brazilian Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-365 = "Middle East Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-602 = "Taipei Standard Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates powershell.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 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-542 = "Myanmar Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-451 = "Caucasus Daylight Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2511 = "Lord Howe Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-601 = "Taipei Daylight Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-871 = "Pakistan Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2492 = "Aus Central W. Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-341 = "Egypt Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-752 = "Tonga Standard Time" 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" powershell.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exe31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exepowershell.exe31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid Process 1256 powershell.exe 1256 powershell.exe 3108 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 3108 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 1564 powershell.exe 1564 powershell.exe 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 1624 powershell.exe 1624 powershell.exe 3428 powershell.exe 3428 powershell.exe 4516 powershell.exe 4516 powershell.exe 1752 powershell.exe 1752 powershell.exe 2676 powershell.exe 2676 powershell.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 4736 csrss.exe 4736 csrss.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 4736 csrss.exe 4736 csrss.exe 3276 injector.exe 3276 injector.exe 4736 csrss.exe 4736 csrss.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
powershell.exe31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exesc.exedescription pid Process Token: SeDebugPrivilege 1256 powershell.exe Token: SeDebugPrivilege 3108 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Token: SeImpersonatePrivilege 3108 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe Token: SeDebugPrivilege 1564 powershell.exe Token: SeDebugPrivilege 1624 powershell.exe Token: SeDebugPrivilege 3428 powershell.exe Token: SeDebugPrivilege 4516 powershell.exe Token: SeDebugPrivilege 1752 powershell.exe Token: SeDebugPrivilege 2676 powershell.exe Token: SeSystemEnvironmentPrivilege 4736 csrss.exe Token: SeSecurityPrivilege 3704 sc.exe Token: SeSecurityPrivilege 3704 sc.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.execmd.execsrss.exewindefender.execmd.exedescription pid Process procid_target PID 3108 wrote to memory of 1256 3108 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 79 PID 3108 wrote to memory of 1256 3108 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 79 PID 3108 wrote to memory of 1256 3108 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 79 PID 3552 wrote to memory of 1564 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 84 PID 3552 wrote to memory of 1564 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 84 PID 3552 wrote to memory of 1564 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 84 PID 3552 wrote to memory of 1184 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 86 PID 3552 wrote to memory of 1184 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 86 PID 1184 wrote to memory of 5060 1184 cmd.exe 88 PID 1184 wrote to memory of 5060 1184 cmd.exe 88 PID 3552 wrote to memory of 1624 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 89 PID 3552 wrote to memory of 1624 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 89 PID 3552 wrote to memory of 1624 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 89 PID 3552 wrote to memory of 3428 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 91 PID 3552 wrote to memory of 3428 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 91 PID 3552 wrote to memory of 3428 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 91 PID 3552 wrote to memory of 4736 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 93 PID 3552 wrote to memory of 4736 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 93 PID 3552 wrote to memory of 4736 3552 31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe 93 PID 4736 wrote to memory of 4516 4736 csrss.exe 94 PID 4736 wrote to memory of 4516 4736 csrss.exe 94 PID 4736 wrote to memory of 4516 4736 csrss.exe 94 PID 4736 wrote to memory of 1752 4736 csrss.exe 100 PID 4736 wrote to memory of 1752 4736 csrss.exe 100 PID 4736 wrote to memory of 1752 4736 csrss.exe 100 PID 4736 wrote to memory of 2676 4736 csrss.exe 102 PID 4736 wrote to memory of 2676 4736 csrss.exe 102 PID 4736 wrote to memory of 2676 4736 csrss.exe 102 PID 4736 wrote to memory of 3276 4736 csrss.exe 104 PID 4736 wrote to memory of 3276 4736 csrss.exe 104 PID 2132 wrote to memory of 3548 2132 windefender.exe 110 PID 2132 wrote to memory of 3548 2132 windefender.exe 110 PID 2132 wrote to memory of 3548 2132 windefender.exe 110 PID 3548 wrote to memory of 3704 3548 cmd.exe 111 PID 3548 wrote to memory of 3704 3548 cmd.exe 111 PID 3548 wrote to memory of 3704 3548 cmd.exe 111 -
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\31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe"C:\Users\Admin\AppData\Local\Temp\31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3108 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1256
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C:\Users\Admin\AppData\Local\Temp\31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.exe"C:\Users\Admin\AppData\Local\Temp\31e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7.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:3552 -
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:1564
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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:1184 -
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:5060
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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:1624
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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:3428
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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:4736 -
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:4516
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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:4748
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:1592
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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:1752
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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:2676
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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:3276
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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:2588
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C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2132 -
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:3548 -
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:3704
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1716
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
MD5d0c46cad6c0778401e21910bd6b56b70
SHA17be418951ea96326aca445b8dfe449b2bfa0dca6
SHA2569600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
SHA512057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5459c9039c0ee4bd24cffe1a052bf16b8
SHA14b511704b2dd41a0eca58dbecfde520afba240e9
SHA256620940c13e392f9c426c44653a7bf7522cb722b49b6c27840e7265bd284ea008
SHA512b9612991ee76835ead5a13008f16e2adbf14f6e3f9bd27ad91845165217cea780572e068260fb88eefb26da9de48129758d111ccde988129b4cd5e6f97f24471
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5015ea76d9189c7e8ed7cb36e7e81f184
SHA199cee68dce5ea6155ed908be6c3170e424e4b85c
SHA25615e84e708279ca48b6a1f1c55186c1b8121bb6e820efd8e9ec381dafdb5395fd
SHA51223e5084118881bc4d1f2576b4f140f20b7c30ae5ddbb2bb13049a1df16c89e4e93ea1e311566c3d950577860bc16e3ce086cb14a926bf38b6bf1786c0e4a270a
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5b771d8796c42575d2dd4bfb7983b7b2f
SHA147df83c2ba88eedecbf674a2ce19af181287991e
SHA25670598e8861f7d8ea3966b799323e9354e58b3fd8313d9a2ab6caae49cd4b3bb1
SHA51210e77209a874b8168cee932d1fe675006578b6f5394b0ebb9d2a4d66ceb66d091ab24a67826ca368c5e7b35a98b2ee3761b8534b51ddd3efd946d087424fb74f
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5bd2f69251a2c84b1ede69d0317b2e08b
SHA19c3f40dd925c00573f99db70217ebb3948143812
SHA2565045162e3c0d1d02fb3d317769374ba626ae42f5909c8211dff29bea76cc3395
SHA512010bf1f8b375ed4bc806acfb6c8ef1332f1681fff44895f90a86036aec1690e8b92d2ad92b296d480d47e9841c7ab5b5c44f275c5cb74b84d121abbf69f082f5
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5dd7a8aef1d0dca626dfda89928e609f1
SHA1da880549afbee707565d818e73a7e96934d8fc11
SHA25687548377f17f0b80a41fddbfd247b9280a5dfd51a045ed9f054ad51a8534ac30
SHA5122df02c6b0c244830ed468925c1a5cf778c27a45c3890ba11f736b2879be0b318020db1893b1eb0dd71caa977b821e693bbc5907a4e6c2ffd96355ed09e474ec7
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Filesize
2.5MB
MD51c2ed77005d2c7bfe50ac79a2fcfb29f
SHA1ff56b923c4ba5e81bff5cf846986bc996f92de6d
SHA256cf52621e25176e923949bb66f6735725feeab695223acb69ec1e22c30b8d3429
SHA5126b51e552ff807b61a3307c396bb59198155001e9d1e3a3c82974bb06cd7b23abefab7aefd4f77a1120fb07e6c62a739694ddf7dee6b03abf2c1ff6b4d59bebc3
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Filesize
4.1MB
MD538991f5c06f1211401578fb7e5b27e84
SHA133d16b11484cbf70f8e4f39722d12c8bcbe52757
SHA25631e8d8b511649e1719bf2563d0c0586bbc77c33721ab59af984446700d2349a7
SHA512b3bd06a028fc04b6ded52bca940e633d4c598fc224612a24e020795332d92a7187e0032799be674381625410673ae94f441e36c4ce2c2fec95b54c896095b5a4
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec