Analysis
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max time kernel
150s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20230221-en -
resource tags
arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system -
submitted
08-06-2023 16:08
Static task
static1
General
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Target
646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe
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Size
4.2MB
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MD5
ad8ea383517ed38012a8faa0bab71842
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SHA1
49c9762c99293941d44bf0e7db65bb1a5cca6d13
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SHA256
646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3
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SHA512
911f4b9bd1386d6a787c3756e4007c2f38404a50cd37d72b3d4bab511cc114835a51633089d110b07dbd0a0ca3558512a5c014a5c50de26c32c9360be3a5642c
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SSDEEP
98304:4/5S+b1Z/p6oQSInErfLJd2o/OVdeUy7NtwK:4BnTENnKJ0ZVk1BtwK
Malware Config
Signatures
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Glupteba payload 16 IoCs
Processes:
resource yara_rule behavioral1/memory/2404-134-0x00000000053B0000-0x0000000005C9B000-memory.dmp family_glupteba behavioral1/memory/2404-154-0x0000000000400000-0x00000000030D2000-memory.dmp family_glupteba behavioral1/memory/2404-190-0x0000000000400000-0x00000000030D2000-memory.dmp family_glupteba behavioral1/memory/336-207-0x0000000000400000-0x00000000030D2000-memory.dmp family_glupteba behavioral1/memory/336-265-0x0000000000400000-0x00000000030D2000-memory.dmp family_glupteba behavioral1/memory/2300-317-0x0000000000400000-0x00000000030D2000-memory.dmp family_glupteba behavioral1/memory/2300-352-0x0000000000400000-0x00000000030D2000-memory.dmp family_glupteba behavioral1/memory/2300-355-0x0000000000400000-0x00000000030D2000-memory.dmp family_glupteba behavioral1/memory/2300-357-0x0000000000400000-0x00000000030D2000-memory.dmp family_glupteba behavioral1/memory/2300-359-0x0000000000400000-0x00000000030D2000-memory.dmp family_glupteba behavioral1/memory/2300-361-0x0000000000400000-0x00000000030D2000-memory.dmp family_glupteba behavioral1/memory/2300-363-0x0000000000400000-0x00000000030D2000-memory.dmp family_glupteba behavioral1/memory/2300-365-0x0000000000400000-0x00000000030D2000-memory.dmp family_glupteba behavioral1/memory/2300-367-0x0000000000400000-0x00000000030D2000-memory.dmp family_glupteba behavioral1/memory/2300-369-0x0000000000400000-0x00000000030D2000-memory.dmp family_glupteba behavioral1/memory/2300-371-0x0000000000400000-0x00000000030D2000-memory.dmp family_glupteba -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Executes dropped EXE 2 IoCs
Processes:
csrss.exeinjector.exepid process 2300 csrss.exe 4820 injector.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Set value (str) \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\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 created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe -
Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.
Processes:
646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe -
Drops file in Windows directory 2 IoCs
Processes:
646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exedescription ioc process File opened for modification C:\Windows\rss 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe File created C:\Windows\rss\csrss.exe 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.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 4732 schtasks.exe 2032 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
powershell.exe646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1871 = "Russia TZ 7 Daylight Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-449 = "Azerbaijan Standard Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.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\IntranetName = "1" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs 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\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1932 = "Russia TZ 11 Standard Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2531 = "Chatham Islands Daylight Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1801 = "Line Islands Daylight Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3141 = "South Sudan Daylight Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA 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\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 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\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1872 = "Russia TZ 7 Standard Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time" 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exe646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exepowershell.exe646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid process 4484 powershell.exe 4484 powershell.exe 2404 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe 2404 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe 760 powershell.exe 760 powershell.exe 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe 3788 powershell.exe 3788 powershell.exe 1696 powershell.exe 1696 powershell.exe 4716 powershell.exe 4716 powershell.exe 4152 powershell.exe 4152 powershell.exe 3780 powershell.exe 3780 powershell.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 2300 csrss.exe 2300 csrss.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 2300 csrss.exe 2300 csrss.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe 4820 injector.exe -
Suspicious use of AdjustPrivilegeToken 10 IoCs
Processes:
powershell.exe646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exedescription pid process Token: SeDebugPrivilege 4484 powershell.exe Token: SeDebugPrivilege 2404 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Token: SeImpersonatePrivilege 2404 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe Token: SeDebugPrivilege 760 powershell.exe Token: SeDebugPrivilege 3788 powershell.exe Token: SeDebugPrivilege 1696 powershell.exe Token: SeDebugPrivilege 4716 powershell.exe Token: SeDebugPrivilege 4152 powershell.exe Token: SeDebugPrivilege 3780 powershell.exe Token: SeSystemEnvironmentPrivilege 2300 csrss.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.execmd.execsrss.exedescription pid process target process PID 2404 wrote to memory of 4484 2404 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe powershell.exe PID 2404 wrote to memory of 4484 2404 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe powershell.exe PID 2404 wrote to memory of 4484 2404 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe powershell.exe PID 336 wrote to memory of 760 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe powershell.exe PID 336 wrote to memory of 760 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe powershell.exe PID 336 wrote to memory of 760 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe powershell.exe PID 336 wrote to memory of 2424 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe cmd.exe PID 336 wrote to memory of 2424 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe cmd.exe PID 2424 wrote to memory of 1232 2424 cmd.exe netsh.exe PID 2424 wrote to memory of 1232 2424 cmd.exe netsh.exe PID 336 wrote to memory of 3788 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe powershell.exe PID 336 wrote to memory of 3788 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe powershell.exe PID 336 wrote to memory of 3788 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe powershell.exe PID 336 wrote to memory of 1696 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe powershell.exe PID 336 wrote to memory of 1696 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe powershell.exe PID 336 wrote to memory of 1696 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe powershell.exe PID 336 wrote to memory of 2300 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe csrss.exe PID 336 wrote to memory of 2300 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe csrss.exe PID 336 wrote to memory of 2300 336 646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe csrss.exe PID 2300 wrote to memory of 4716 2300 csrss.exe powershell.exe PID 2300 wrote to memory of 4716 2300 csrss.exe powershell.exe PID 2300 wrote to memory of 4716 2300 csrss.exe powershell.exe PID 2300 wrote to memory of 4152 2300 csrss.exe powershell.exe PID 2300 wrote to memory of 4152 2300 csrss.exe powershell.exe PID 2300 wrote to memory of 4152 2300 csrss.exe powershell.exe PID 2300 wrote to memory of 3780 2300 csrss.exe powershell.exe PID 2300 wrote to memory of 3780 2300 csrss.exe powershell.exe PID 2300 wrote to memory of 3780 2300 csrss.exe powershell.exe PID 2300 wrote to memory of 4820 2300 csrss.exe injector.exe PID 2300 wrote to memory of 4820 2300 csrss.exe injector.exe -
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\646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe"C:\Users\Admin\AppData\Local\Temp\646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.exe"C:\Users\Admin\AppData\Local\Temp\646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3.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
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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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
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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
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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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
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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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)
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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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
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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)
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ft4e5asf.nx0.ps1Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeFilesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeFilesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.logFilesize
2KB
MD53d086a433708053f9bf9523e1d87a4e8
SHA1b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28
SHA2566f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69
SHA512931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-InteractiveFilesize
19KB
MD5fbfaf584492ad9e3ac938ccc8a3791bc
SHA1a04226d2ba0114a2ee6c825ac73db54b706affeb
SHA25630f1c41496cfed07a6a81f155c17fe74ec0d2cc8dd34923339a82af12c9a94e8
SHA512466d3bd86ad4ac7878768229eb5bdb9951f5df116312622b56b3a447f8253bc9e830c5955d9205b1401b19495f8e2663f343b725af9ba35ec799ebd76d963314
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-InteractiveFilesize
19KB
MD5b8777d826c8a14f421dda739b5a416d1
SHA1ca5d15538abdff91a87fb19e8e3a7ba0e20633aa
SHA2563a9ac2e19b82227a1e13ec5c337693099f9caa5d2597fbea11d8ffcaf49948f9
SHA512051173365a71a9f4834b60c66db475e2fbbd4490c46f6b29555790e3a491a766fd92c47687a6227198ea4dc4931947f10ffac37eb12140aec95d5eeecc082728
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-InteractiveFilesize
19KB
MD566fdbf9119f4f5e1a301af9e92f4690e
SHA1287f315866abdedf7a0add242da020a90640d309
SHA256ddde988b088750b95954b2472134e248f69a6293d45df576d79c94f5a84b0f8a
SHA5128455849423e672ae7ac7181c18ed9cb251fef767172cf409105d65f7e234d359f36bd2a303708447124ce03954e396eef7b900fe4f882cc29983cf6dcc1119bc
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-InteractiveFilesize
19KB
MD547b3189b7a38b8b383badd59db88a698
SHA113aa9c2c4e584102265fcb57dfce7c440577f947
SHA25603a555f4137d8e2f07a07d4db955f22b111683f8c3fa26b873fe799acdbb5163
SHA512e9fab93c30c330059810155dd43108132be355a79d9d80d39805c5fd37f7fc54e2c8df4985ddddfa27cb95d95c0e596aa77f0d36ab685934102c505111f25db4
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-InteractiveFilesize
19KB
MD5468bcce7fa560fd48e6449afe40332f7
SHA19f1b860907183170a29661c1f2931ad652ea7abe
SHA2565d928a7a362de2263d1d2db2ca551311d26cb3181c3e3f0f0d47f388f3fd2634
SHA51292b1ef04d05f768b3b656b6a5937b5dd7fe725d0bc71fa656e66997fe90290e76416a9585b74e8f1c796b33d7f270de1d258b3d327ee5114b8bad286cdad1ba5
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C:\Windows\rss\csrss.exeFilesize
4.2MB
MD5ad8ea383517ed38012a8faa0bab71842
SHA149c9762c99293941d44bf0e7db65bb1a5cca6d13
SHA256646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3
SHA512911f4b9bd1386d6a787c3756e4007c2f38404a50cd37d72b3d4bab511cc114835a51633089d110b07dbd0a0ca3558512a5c014a5c50de26c32c9360be3a5642c
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C:\Windows\rss\csrss.exeFilesize
4.2MB
MD5ad8ea383517ed38012a8faa0bab71842
SHA149c9762c99293941d44bf0e7db65bb1a5cca6d13
SHA256646e5dda5a59a0df3ead54857793b11ee4f10bc33005193a2e2bb5daa2843cf3
SHA512911f4b9bd1386d6a787c3756e4007c2f38404a50cd37d72b3d4bab511cc114835a51633089d110b07dbd0a0ca3558512a5c014a5c50de26c32c9360be3a5642c
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memory/336-207-0x0000000000400000-0x00000000030D2000-memory.dmpFilesize
44.8MB
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memory/336-265-0x0000000000400000-0x00000000030D2000-memory.dmpFilesize
44.8MB
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memory/760-194-0x0000000070850000-0x0000000070BA4000-memory.dmpFilesize
3.3MB
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memory/760-204-0x000000007F990000-0x000000007F9A0000-memory.dmpFilesize
64KB
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memory/760-193-0x00000000706D0000-0x000000007071C000-memory.dmpFilesize
304KB
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memory/760-192-0x0000000002810000-0x0000000002820000-memory.dmpFilesize
64KB
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memory/760-191-0x0000000002810000-0x0000000002820000-memory.dmpFilesize
64KB
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memory/760-180-0x0000000002810000-0x0000000002820000-memory.dmpFilesize
64KB
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memory/1696-236-0x0000000002CE0000-0x0000000002CF0000-memory.dmpFilesize
64KB
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memory/1696-237-0x0000000002CE0000-0x0000000002CF0000-memory.dmpFilesize
64KB
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memory/1696-248-0x0000000002CE0000-0x0000000002CF0000-memory.dmpFilesize
64KB
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memory/1696-250-0x00000000706D0000-0x000000007071C000-memory.dmpFilesize
304KB
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memory/1696-249-0x000000007FB30000-0x000000007FB40000-memory.dmpFilesize
64KB
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memory/1696-251-0x0000000070E50000-0x00000000711A4000-memory.dmpFilesize
3.3MB
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memory/2300-352-0x0000000000400000-0x00000000030D2000-memory.dmpFilesize
44.8MB
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memory/2300-361-0x0000000000400000-0x00000000030D2000-memory.dmpFilesize
44.8MB
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memory/2300-357-0x0000000000400000-0x00000000030D2000-memory.dmpFilesize
44.8MB
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memory/2300-317-0x0000000000400000-0x00000000030D2000-memory.dmpFilesize
44.8MB
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memory/2300-371-0x0000000000400000-0x00000000030D2000-memory.dmpFilesize
44.8MB
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memory/2300-369-0x0000000000400000-0x00000000030D2000-memory.dmpFilesize
44.8MB
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memory/2300-367-0x0000000000400000-0x00000000030D2000-memory.dmpFilesize
44.8MB
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memory/2300-359-0x0000000000400000-0x00000000030D2000-memory.dmpFilesize
44.8MB
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memory/2300-365-0x0000000000400000-0x00000000030D2000-memory.dmpFilesize
44.8MB
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memory/2300-363-0x0000000000400000-0x00000000030D2000-memory.dmpFilesize
44.8MB
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memory/2300-355-0x0000000000400000-0x00000000030D2000-memory.dmpFilesize
44.8MB
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memory/2404-134-0x00000000053B0000-0x0000000005C9B000-memory.dmpFilesize
8.9MB
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memory/2404-154-0x0000000000400000-0x00000000030D2000-memory.dmpFilesize
44.8MB
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memory/2404-190-0x0000000000400000-0x00000000030D2000-memory.dmpFilesize
44.8MB
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memory/3780-335-0x00000000705F0000-0x000000007063C000-memory.dmpFilesize
304KB
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memory/3780-346-0x000000007FC80000-0x000000007FC90000-memory.dmpFilesize
64KB
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memory/3780-336-0x0000000070D80000-0x00000000710D4000-memory.dmpFilesize
3.3MB
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memory/3780-334-0x0000000004F40000-0x0000000004F50000-memory.dmpFilesize
64KB
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memory/3780-333-0x0000000004F40000-0x0000000004F50000-memory.dmpFilesize
64KB
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memory/3780-332-0x0000000004F40000-0x0000000004F50000-memory.dmpFilesize
64KB
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memory/3788-224-0x0000000070850000-0x0000000070BA4000-memory.dmpFilesize
3.3MB
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memory/3788-234-0x000000007EFA0000-0x000000007EFB0000-memory.dmpFilesize
64KB
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memory/3788-223-0x00000000706D0000-0x000000007071C000-memory.dmpFilesize
304KB
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memory/3788-222-0x0000000002890000-0x00000000028A0000-memory.dmpFilesize
64KB
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memory/3788-209-0x0000000002890000-0x00000000028A0000-memory.dmpFilesize
64KB
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memory/3788-210-0x0000000002890000-0x00000000028A0000-memory.dmpFilesize
64KB
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memory/4152-307-0x0000000070D80000-0x00000000710D4000-memory.dmpFilesize
3.3MB
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memory/4152-304-0x0000000004500000-0x0000000004510000-memory.dmpFilesize
64KB
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memory/4152-318-0x0000000004500000-0x0000000004510000-memory.dmpFilesize
64KB
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memory/4152-319-0x000000007FB50000-0x000000007FB60000-memory.dmpFilesize
64KB
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memory/4152-306-0x00000000705F0000-0x000000007063C000-memory.dmpFilesize
304KB
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memory/4152-305-0x0000000004500000-0x0000000004510000-memory.dmpFilesize
64KB
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memory/4484-170-0x0000000007440000-0x000000000745E000-memory.dmpFilesize
120KB
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memory/4484-152-0x0000000007040000-0x0000000007084000-memory.dmpFilesize
272KB
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memory/4484-135-0x0000000002900000-0x0000000002936000-memory.dmpFilesize
216KB
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memory/4484-136-0x00000000051B0000-0x00000000057D8000-memory.dmpFilesize
6.2MB
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memory/4484-137-0x0000000004B70000-0x0000000004B80000-memory.dmpFilesize
64KB
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memory/4484-174-0x00000000075E0000-0x00000000075EE000-memory.dmpFilesize
56KB
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memory/4484-173-0x000000007FDA0000-0x000000007FDB0000-memory.dmpFilesize
64KB
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memory/4484-138-0x0000000004B70000-0x0000000004B80000-memory.dmpFilesize
64KB
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memory/4484-176-0x0000000007620000-0x0000000007628000-memory.dmpFilesize
32KB
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memory/4484-172-0x0000000007640000-0x00000000076D6000-memory.dmpFilesize
600KB
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memory/4484-171-0x0000000007580000-0x000000000758A000-memory.dmpFilesize
40KB
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memory/4484-139-0x0000000004FF0000-0x0000000005012000-memory.dmpFilesize
136KB
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memory/4484-160-0x0000000070850000-0x0000000070BA4000-memory.dmpFilesize
3.3MB
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memory/4484-159-0x00000000706D0000-0x000000007071C000-memory.dmpFilesize
304KB
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memory/4484-158-0x0000000007460000-0x0000000007492000-memory.dmpFilesize
200KB
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memory/4484-157-0x0000000007210000-0x000000000722A000-memory.dmpFilesize
104KB
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memory/4484-156-0x0000000007950000-0x0000000007FCA000-memory.dmpFilesize
6.5MB
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memory/4484-155-0x0000000004B70000-0x0000000004B80000-memory.dmpFilesize
64KB
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memory/4484-153-0x0000000007250000-0x00000000072C6000-memory.dmpFilesize
472KB
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memory/4484-175-0x00000000076E0000-0x00000000076FA000-memory.dmpFilesize
104KB
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memory/4484-151-0x0000000005DE0000-0x0000000005DFE000-memory.dmpFilesize
120KB
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memory/4484-141-0x0000000005890000-0x00000000058F6000-memory.dmpFilesize
408KB
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memory/4484-140-0x0000000005090000-0x00000000050F6000-memory.dmpFilesize
408KB
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memory/4716-269-0x0000000004FA0000-0x0000000004FB0000-memory.dmpFilesize
64KB
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memory/4716-280-0x00000000706D0000-0x000000007071C000-memory.dmpFilesize
304KB
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memory/4716-281-0x0000000070850000-0x0000000070BA4000-memory.dmpFilesize
3.3MB
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memory/4716-292-0x000000007F330000-0x000000007F340000-memory.dmpFilesize
64KB
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memory/4716-291-0x0000000004FA0000-0x0000000004FB0000-memory.dmpFilesize
64KB