Analysis
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max time kernel
150s -
max time network
127s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
16-05-2024 15:23
Static task
static1
Behavioral task
behavioral1
Sample
b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe
Resource
win10v2004-20240508-en
General
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Target
b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe
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Size
4.1MB
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MD5
3aafa11f14ab92b3d3e98784f1adbbc1
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SHA1
c1015ea32b75c59f6323c46055d3ef0bbaa80f85
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SHA256
b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd
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SHA512
13a886db858101fb79fcfacc00b6ce449607b5906ab63d369e5508710d52e6e52f259a825d7a32f47af52834c3df4adde0b02b965f73e22b5ec90621f1ea947d
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SSDEEP
98304:QvzBhIm6zIE7SIO2RhCG9zRnSMmyRgCXxFQG9c6:mzBhDcIv8bCGbNmyXXxFQGy6
Malware Config
Signatures
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Glupteba payload 18 IoCs
Processes:
resource yara_rule behavioral1/memory/3756-2-0x0000000002D20000-0x000000000360B000-memory.dmp family_glupteba behavioral1/memory/3756-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/3756-83-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/3756-84-0x0000000002D20000-0x000000000360B000-memory.dmp family_glupteba behavioral1/memory/1412-133-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/2544-214-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/2544-216-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/2544-218-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/2544-220-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/2544-222-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/2544-224-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/2544-226-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/2544-228-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/2544-230-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/2544-232-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/2544-234-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/2544-236-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/2544-238-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid Process 4804 netsh.exe -
Executes dropped EXE 2 IoCs
Processes:
csrss.exeinjector.exepid Process 2544 csrss.exe 4392 injector.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.execsrss.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\"" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.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\"" 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.
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 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 -
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:
b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exedescription ioc Process File opened (read-only) \??\VBoxMiniRdrDN b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe -
Drops file in Windows directory 2 IoCs
Processes:
b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exedescription ioc Process File opened for modification C:\Windows\rss b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe File created C:\Windows\rss\csrss.exe b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe -
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid Process 4564 powershell.exe 4056 powershell.exe 3872 powershell.exe 1932 powershell.exe 4676 powershell.exe 2892 powershell.exe 2268 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 2116 schtasks.exe 1400 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
powershell.exepowershell.exepowershell.exeb5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exepowershell.exepowershell.exepowershell.exedescription ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-331 = "E. Europe Daylight Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2772 = "Omsk Standard Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-652 = "AUS Central Standard Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1801 = "Line Islands Daylight Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-122 = "SA Pacific Standard Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs 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\C:\Windows\system32\,@tzres.dll,-104 = "Central Brazilian Daylight Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-931 = "Coordinated Universal Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2771 = "Omsk Daylight Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.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" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2451 = "Saint Pierre Daylight Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\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\IntranetName = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates 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\C:\Windows\system32\,@tzres.dll,-272 = "Greenwich Standard Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.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,-151 = "Central America Daylight Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-105 = "Central Brazilian Standard Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.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" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1861 = "Russia TZ 6 Daylight Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.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\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs 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\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1892 = "Russia TZ 3 Standard Time" b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exeb5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exepowershell.exeb5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid Process 1932 powershell.exe 1932 powershell.exe 3756 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 3756 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 4676 powershell.exe 4676 powershell.exe 4676 powershell.exe 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 2892 powershell.exe 2892 powershell.exe 2892 powershell.exe 2268 powershell.exe 2268 powershell.exe 2268 powershell.exe 4564 powershell.exe 4564 powershell.exe 4056 powershell.exe 4056 powershell.exe 3872 powershell.exe 3872 powershell.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 2544 csrss.exe 2544 csrss.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 2544 csrss.exe 2544 csrss.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe 4392 injector.exe -
Suspicious use of AdjustPrivilegeToken 10 IoCs
Processes:
powershell.exeb5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exedescription pid Process Token: SeDebugPrivilege 1932 powershell.exe Token: SeDebugPrivilege 3756 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Token: SeImpersonatePrivilege 3756 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe Token: SeDebugPrivilege 4676 powershell.exe Token: SeDebugPrivilege 2892 powershell.exe Token: SeDebugPrivilege 2268 powershell.exe Token: SeDebugPrivilege 4564 powershell.exe Token: SeDebugPrivilege 4056 powershell.exe Token: SeDebugPrivilege 3872 powershell.exe Token: SeSystemEnvironmentPrivilege 2544 csrss.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exeb5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.execmd.execsrss.exedescription pid Process procid_target PID 3756 wrote to memory of 1932 3756 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 87 PID 3756 wrote to memory of 1932 3756 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 87 PID 3756 wrote to memory of 1932 3756 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 87 PID 1412 wrote to memory of 4676 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 97 PID 1412 wrote to memory of 4676 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 97 PID 1412 wrote to memory of 4676 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 97 PID 1412 wrote to memory of 2520 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 100 PID 1412 wrote to memory of 2520 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 100 PID 2520 wrote to memory of 4804 2520 cmd.exe 102 PID 2520 wrote to memory of 4804 2520 cmd.exe 102 PID 1412 wrote to memory of 2892 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 104 PID 1412 wrote to memory of 2892 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 104 PID 1412 wrote to memory of 2892 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 104 PID 1412 wrote to memory of 2268 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 106 PID 1412 wrote to memory of 2268 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 106 PID 1412 wrote to memory of 2268 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 106 PID 1412 wrote to memory of 2544 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 108 PID 1412 wrote to memory of 2544 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 108 PID 1412 wrote to memory of 2544 1412 b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe 108 PID 2544 wrote to memory of 4564 2544 csrss.exe 109 PID 2544 wrote to memory of 4564 2544 csrss.exe 109 PID 2544 wrote to memory of 4564 2544 csrss.exe 109 PID 2544 wrote to memory of 4056 2544 csrss.exe 114 PID 2544 wrote to memory of 4056 2544 csrss.exe 114 PID 2544 wrote to memory of 4056 2544 csrss.exe 114 PID 2544 wrote to memory of 3872 2544 csrss.exe 117 PID 2544 wrote to memory of 3872 2544 csrss.exe 117 PID 2544 wrote to memory of 3872 2544 csrss.exe 117 PID 2544 wrote to memory of 4392 2544 csrss.exe 119 PID 2544 wrote to memory of 4392 2544 csrss.exe 119 -
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\b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe"C:\Users\Admin\AppData\Local\Temp\b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3756 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1932
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C:\Users\Admin\AppData\Local\Temp\b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.exe"C:\Users\Admin\AppData\Local\Temp\b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd.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:1412 -
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:4676
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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:2520 -
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:4804
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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:2892
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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:2268
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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.
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2544 -
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:4564
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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:1400
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:940
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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:4056
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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:3872
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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:4392
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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:2116
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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
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5441918235c66bff282d82ecb9a3b8464
SHA12922e9932df463182434fa909ac9661b5aafb38d
SHA256564f33e365546736add5db5a1df64b745e77bd45a45ba580215ff03a01b304d7
SHA5120c2b19acd550d4087ffa87cb513bd6d48b3dbbfb750cd6c37b8b70e5df16d8559a3485a5f234e66733c4c25401029a1f12b8a18b0a4e329893d2422aa408a229
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD59f8ef268b124e57f7ba4107deb55c3e2
SHA1c7cd0e296361f4da1ec71418e2222a0d9e665cef
SHA256e219a673e5cec432bb6ba00bf91475968ae5f6755cac53fe3538572eb07aada5
SHA512b8d9fdc69fa6edea1ee09ae84da6fe1e2211a0ef5d8623abb0cb9a050434409302695b7df4a6ebfc83d653484307b24ebbc1d6c33ad06a578ddb7d65df1c4834
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD506fd232c1c858ff447e67a87180c060d
SHA10e61f4caf56697d2677d6f4079d3cee94bf6c889
SHA256330233e91f244afa44ca0fc7c0072ed7c46199f8d7d43d5153440c22a1f67991
SHA5127845c96deb89e8a6339697e216972bc26c093c5d23d998f5180ccfcdb41088a570a0c580af191dde3607a071d9809f072dc6d1845191e5317cd4869e422ab0bd
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5a78f7bc2ca086d991757d32cdeba9cf6
SHA1df57354217c0f28311284cff1515e5095c68134c
SHA256f3ef055e5e476d7d24ee8c216abdcf8efd496e685d63456e5205de1b8df1957c
SHA512c76e83855f791b9915878efe9b6ff6e37576732d723580b83fae2c38138046c34df99458f2a2760e8845c0866d3229c795832114ccab84267453e2178626db59
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD58ae5cca18d1fce8c6b14b0f33f3bbb37
SHA1c870b41d13a132d22aed474485a0e78472eeac22
SHA2563b04ca68faacef94ac0e3607e74025a4fb24554617c42ceb26205aa82e44ae8f
SHA512e5a32a6d3c291502aa6be9b88e7a0c2c2e452864d2054ef1cd2c9cd8650815ff3318442c0d36dcfeece37aec88dc5a0a562ab91b3d4bbb0a7c585cac219526ab
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Filesize
4.1MB
MD53aafa11f14ab92b3d3e98784f1adbbc1
SHA1c1015ea32b75c59f6323c46055d3ef0bbaa80f85
SHA256b5f6532c96e8d4c5a44d9d2b5f6517704dc2e466bfe374483c43d7dc13f670bd
SHA51213a886db858101fb79fcfacc00b6ce449607b5906ab63d369e5508710d52e6e52f259a825d7a32f47af52834c3df4adde0b02b965f73e22b5ec90621f1ea947d