Analysis
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max time kernel
16s -
max time network
150s -
platform
windows11-21h2_x64 -
resource
win11-20240412-en -
resource tags
arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system -
submitted
19-04-2024 07:04
Static task
static1
Behavioral task
behavioral1
Sample
bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe
Resource
win10v2004-20240412-en
General
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Target
bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe
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Size
4.2MB
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MD5
a0455783057716ecd106cc4baa50fb59
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SHA1
3eeafb5a2a3b82d757f1e995b9cf44c0bc15ffc4
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SHA256
bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014
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SHA512
325ad4f8c4975e2277948968ae7d6751e2d17b98becb3d46b4b59ff8737cdef97d967f6149bdc94171eec99ccd6a3be7729c94a8e60314bc72aaabbb5918d219
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SSDEEP
98304:PNkDk7Y2e9fhWY+LbgLFpBVAayCN/CB0J4dlv7S/k29jp/49:Wk7LeNhW/+FpBVAa19Ce4dlv7wZ49
Malware Config
Signatures
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Glupteba payload 20 IoCs
Processes:
resource yara_rule behavioral2/memory/4552-2-0x0000000005360000-0x0000000005C4B000-memory.dmp family_glupteba behavioral2/memory/4552-3-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba behavioral2/memory/2044-51-0x0000000005250000-0x0000000005B3B000-memory.dmp family_glupteba behavioral2/memory/2044-52-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba behavioral2/memory/4552-65-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba behavioral2/memory/2044-128-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba behavioral2/memory/2044-208-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba behavioral2/memory/3100-242-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba behavioral2/memory/3100-253-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba behavioral2/memory/3100-257-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba behavioral2/memory/3100-261-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba behavioral2/memory/3100-265-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba behavioral2/memory/3100-269-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba behavioral2/memory/3100-273-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba behavioral2/memory/3100-277-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba behavioral2/memory/3100-281-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba behavioral2/memory/3100-285-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba behavioral2/memory/3100-289-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba behavioral2/memory/3100-293-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba behavioral2/memory/3100-297-0x0000000000400000-0x0000000003111000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid process 2928 netsh.exe -
Executes dropped EXE 1 IoCs
Processes:
csrss.exepid process 3100 csrss.exe -
Processes:
resource yara_rule C:\Windows\windefender.exe upx behavioral2/memory/340-250-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/4236-256-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/4236-263-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-801878912-692986033-442676226-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.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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Drops file in System32 directory 5 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exedescription ioc process File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe -
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:
bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe -
Drops file in Windows directory 2 IoCs
Processes:
bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exedescription ioc process File opened for modification C:\Windows\rss bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe File created C:\Windows\rss\csrss.exe bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe -
Launches sc.exe 1 IoCs
Sc.exe is a Windows utlilty to control services on the system.
Processes:
sc.exepid process 1988 sc.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 2312 schtasks.exe 4948 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2751 = "Tomsk Daylight Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\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\trust\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2341 = "Haiti Daylight Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1872 = "Russia TZ 7 Standard Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed 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\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1871 = "Russia TZ 7 Daylight Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs 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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust powershell.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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2792 = "Novosibirsk Standard Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1042 = "Ulaanbaatar Standard Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-112 = "Eastern Standard Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2872 = "Magallanes Standard Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time" bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe -
Suspicious behavior: EnumeratesProcesses 24 IoCs
Processes:
powershell.exebd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exepowershell.exebd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exepowershell.exepowershell.exepowershell.exepowershell.exepid process 1972 powershell.exe 1972 powershell.exe 4552 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe 4552 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe 3812 powershell.exe 3812 powershell.exe 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe 1620 powershell.exe 1620 powershell.exe 1584 powershell.exe 1584 powershell.exe 3664 powershell.exe 3664 powershell.exe 4104 powershell.exe 4104 powershell.exe -
Suspicious use of AdjustPrivilegeToken 8 IoCs
Processes:
powershell.exebd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription pid process Token: SeDebugPrivilege 1972 powershell.exe Token: SeDebugPrivilege 4552 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Token: SeImpersonatePrivilege 4552 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe Token: SeDebugPrivilege 3812 powershell.exe Token: SeDebugPrivilege 1620 powershell.exe Token: SeDebugPrivilege 1584 powershell.exe Token: SeDebugPrivilege 3664 powershell.exe Token: SeDebugPrivilege 4104 powershell.exe -
Suspicious use of WriteProcessMemory 25 IoCs
Processes:
bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exebd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.execmd.execsrss.exedescription pid process target process PID 4552 wrote to memory of 1972 4552 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe powershell.exe PID 4552 wrote to memory of 1972 4552 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe powershell.exe PID 4552 wrote to memory of 1972 4552 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe powershell.exe PID 2044 wrote to memory of 3812 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe powershell.exe PID 2044 wrote to memory of 3812 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe powershell.exe PID 2044 wrote to memory of 3812 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe powershell.exe PID 2044 wrote to memory of 1528 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe cmd.exe PID 2044 wrote to memory of 1528 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe cmd.exe PID 1528 wrote to memory of 2928 1528 cmd.exe netsh.exe PID 1528 wrote to memory of 2928 1528 cmd.exe netsh.exe PID 2044 wrote to memory of 1620 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe powershell.exe PID 2044 wrote to memory of 1620 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe powershell.exe PID 2044 wrote to memory of 1620 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe powershell.exe PID 2044 wrote to memory of 1584 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe powershell.exe PID 2044 wrote to memory of 1584 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe powershell.exe PID 2044 wrote to memory of 1584 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe powershell.exe PID 2044 wrote to memory of 3100 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe csrss.exe PID 2044 wrote to memory of 3100 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe csrss.exe PID 2044 wrote to memory of 3100 2044 bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe csrss.exe PID 3100 wrote to memory of 3664 3100 csrss.exe powershell.exe PID 3100 wrote to memory of 3664 3100 csrss.exe powershell.exe PID 3100 wrote to memory of 3664 3100 csrss.exe powershell.exe PID 3100 wrote to memory of 4104 3100 csrss.exe powershell.exe PID 3100 wrote to memory of 4104 3100 csrss.exe powershell.exe PID 3100 wrote to memory of 4104 3100 csrss.exe powershell.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\bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe"C:\Users\Admin\AppData\Local\Temp\bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.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\bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.exe"C:\Users\Admin\AppData\Local\Temp\bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014.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
- 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⤵
- 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⤵
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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⤵
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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\windefender.exe"C:\Windows\windefender.exe"4⤵
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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⤵
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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
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Persistence
Create or Modify System Process
1Windows Service
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Privilege Escalation
Create or Modify System Process
1Windows Service
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_h1wt4wfo.alv.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:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.logFilesize
2KB
MD5ac4917a885cf6050b1a483e4bc4d2ea5
SHA1b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f
SHA256e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9
SHA512092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-InteractiveFilesize
19KB
MD513fa470f0a13045b266773e1f823f1d2
SHA117871fc751e1e88bd631eda68d784334f61cd2e0
SHA25642acd2ea592369512518b3a27df34844d9783f438c06c479163afc2b4cb02f8c
SHA5127bbc4fb4d2d9d992cb3652413cbd96900acb51bc0b72385f08aa11a7129fe8d9e07fc281b4a4ee868971808ac91fa956f21ac35b80f359e47ad72b739249df1f
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-InteractiveFilesize
19KB
MD5662f7f54467406652d826297d129d76d
SHA124dd1954d27d1c3d9c3270a316074bfe5e957cb3
SHA25629d9df4f436a65d2fb1f343c738611f9b310b7544a5be306ab0bbb7d458188d0
SHA512c051a47c53f43ec51bcdbd18db0c2783abe850fa50cc888d9d7ff9854efecf2909b14dc0a685eae24c9152ab7aa9e24746783c2d8f36d875d2c8a727cf2a9a25
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-InteractiveFilesize
19KB
MD592a9c5b340fba79ced1f43f4ddeee1d0
SHA1a4541010a77bf04dd9d26316a348c190cd59f8ce
SHA2569e6eb420d7d34aabe0394302dcfb6bfba14c729110ab7ccf93e787a30cdc7201
SHA512e2b6e7d8e4f4665ab322718841e1c4ebc8f6fa4fe1c46b5f366a0883564b7640abd56bdf63a7b062e4bcab1b6970d292175eb6679159cf059c2ed8fc50d2914f
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-InteractiveFilesize
19KB
MD5974220634372821e5e16d5f0d1eb4000
SHA151db3f148ff2eac26e7e0c3144251289749d63d4
SHA256b698e26d4e13acb233a8fb0b74c7fd6f7831816cd5e5e51b4f29a9f5d5a99547
SHA51295f08840a18ead97d7283e715ee727c296e2420da2da6beeed749464a50f0c5ea6e33f78b26e43daba9dda16ed66f9689bbca9a77aaf9be1cbdbfde46ab61baf
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-InteractiveFilesize
19KB
MD5bff2c316235b2daad7b3a84f26293dce
SHA19617b4a54740074bb74e98bd00c36a8b040409a0
SHA25676ee665352943b35d6e65e8025afdca246413cecd416ec2a9d61cded1a9f9ab7
SHA512219f38ab400b3d6efa8004a6f3181be3581dad9a2ac7d1914b25864f09e45518e703b633f4aaa07e3c5a95ab03e6797a6cc006b522bf74b812b2d7cb1eb07a4e
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C:\Windows\rss\csrss.exeFilesize
4.2MB
MD5a0455783057716ecd106cc4baa50fb59
SHA13eeafb5a2a3b82d757f1e995b9cf44c0bc15ffc4
SHA256bd735fb40da8ebda13128b9e3b8e3048d7235b8150de04cc9e20d48a4e360014
SHA512325ad4f8c4975e2277948968ae7d6751e2d17b98becb3d46b4b59ff8737cdef97d967f6149bdc94171eec99ccd6a3be7729c94a8e60314bc72aaabbb5918d219
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C:\Windows\windefender.exeFilesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec
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memory/340-250-0x0000000000400000-0x00000000008DF000-memory.dmpFilesize
4.9MB
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memory/1584-126-0x0000000005CC0000-0x0000000006017000-memory.dmpFilesize
3.3MB
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memory/1584-130-0x000000007F380000-0x000000007F390000-memory.dmpFilesize
64KB
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memory/1584-117-0x0000000002D20000-0x0000000002D30000-memory.dmpFilesize
64KB
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memory/1584-116-0x0000000073E10000-0x00000000745C1000-memory.dmpFilesize
7.7MB
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memory/1584-129-0x0000000002D20000-0x0000000002D30000-memory.dmpFilesize
64KB
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memory/1620-115-0x0000000073E10000-0x00000000745C1000-memory.dmpFilesize
7.7MB
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memory/1620-113-0x00000000028E0000-0x00000000028F0000-memory.dmpFilesize
64KB
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memory/1620-112-0x00000000028E0000-0x00000000028F0000-memory.dmpFilesize
64KB
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memory/1620-103-0x00000000702D0000-0x0000000070627000-memory.dmpFilesize
3.3MB
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memory/1620-100-0x0000000070080000-0x00000000700CC000-memory.dmpFilesize
304KB
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memory/1620-102-0x000000007F4F0000-0x000000007F500000-memory.dmpFilesize
64KB
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memory/1620-97-0x00000000058C0000-0x0000000005C17000-memory.dmpFilesize
3.3MB
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memory/1620-88-0x00000000028E0000-0x00000000028F0000-memory.dmpFilesize
64KB
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memory/1620-87-0x00000000028E0000-0x00000000028F0000-memory.dmpFilesize
64KB
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memory/1620-86-0x0000000073E10000-0x00000000745C1000-memory.dmpFilesize
7.7MB
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memory/1972-38-0x00000000076C0000-0x00000000076DA000-memory.dmpFilesize
104KB
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memory/1972-23-0x000000007F940000-0x000000007F950000-memory.dmpFilesize
64KB
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memory/1972-44-0x00000000077D0000-0x00000000077EA000-memory.dmpFilesize
104KB
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memory/1972-45-0x00000000077F0000-0x00000000077F8000-memory.dmpFilesize
32KB
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memory/1972-48-0x0000000073E10000-0x00000000745C1000-memory.dmpFilesize
7.7MB
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memory/1972-6-0x0000000073E10000-0x00000000745C1000-memory.dmpFilesize
7.7MB
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memory/1972-7-0x0000000004EC0000-0x0000000004ED0000-memory.dmpFilesize
64KB
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memory/1972-8-0x0000000005230000-0x0000000005252000-memory.dmpFilesize
136KB
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memory/1972-9-0x0000000005400000-0x0000000005466000-memory.dmpFilesize
408KB
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memory/1972-10-0x0000000005470000-0x00000000054D6000-memory.dmpFilesize
408KB
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memory/1972-19-0x0000000005CA0000-0x0000000005FF7000-memory.dmpFilesize
3.3MB
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memory/1972-20-0x00000000060F0000-0x000000000610E000-memory.dmpFilesize
120KB
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memory/1972-21-0x0000000006130000-0x000000000617C000-memory.dmpFilesize
304KB
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memory/1972-22-0x0000000006680000-0x00000000066C6000-memory.dmpFilesize
280KB
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memory/1972-5-0x0000000005500000-0x0000000005B2A000-memory.dmpFilesize
6.2MB
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memory/1972-24-0x0000000007510000-0x0000000007544000-memory.dmpFilesize
208KB
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memory/1972-25-0x0000000070080000-0x00000000700CC000-memory.dmpFilesize
304KB
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memory/1972-43-0x0000000007780000-0x0000000007795000-memory.dmpFilesize
84KB
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memory/1972-26-0x0000000070200000-0x0000000070557000-memory.dmpFilesize
3.3MB
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memory/1972-35-0x0000000007570000-0x000000000758E000-memory.dmpFilesize
120KB
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memory/1972-36-0x0000000007590000-0x0000000007634000-memory.dmpFilesize
656KB
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memory/1972-37-0x0000000007D00000-0x000000000837A000-memory.dmpFilesize
6.5MB
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memory/1972-42-0x0000000007770000-0x000000000777E000-memory.dmpFilesize
56KB
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memory/1972-41-0x0000000007720000-0x0000000007731000-memory.dmpFilesize
68KB
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memory/1972-40-0x0000000007810000-0x00000000078A6000-memory.dmpFilesize
600KB
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memory/1972-39-0x0000000007700000-0x000000000770A000-memory.dmpFilesize
40KB
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memory/1972-4-0x0000000002C80000-0x0000000002CB6000-memory.dmpFilesize
216KB
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memory/2044-128-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/2044-208-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/2044-101-0x0000000004E50000-0x0000000005250000-memory.dmpFilesize
4.0MB
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memory/2044-50-0x0000000004E50000-0x0000000005250000-memory.dmpFilesize
4.0MB
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memory/2044-51-0x0000000005250000-0x0000000005B3B000-memory.dmpFilesize
8.9MB
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memory/2044-52-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/3100-261-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/3100-273-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/3100-277-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/3100-281-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/3100-285-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/3100-289-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/3100-269-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/3100-293-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/3100-297-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/3100-265-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/3100-242-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/3100-257-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/3100-253-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/3812-78-0x0000000005650000-0x0000000005660000-memory.dmpFilesize
64KB
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memory/3812-66-0x000000007F610000-0x000000007F620000-memory.dmpFilesize
64KB
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memory/3812-84-0x0000000073E10000-0x00000000745C1000-memory.dmpFilesize
7.7MB
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memory/3812-54-0x0000000073E10000-0x00000000745C1000-memory.dmpFilesize
7.7MB
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memory/3812-55-0x0000000005650000-0x0000000005660000-memory.dmpFilesize
64KB
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memory/3812-81-0x0000000007EC0000-0x0000000007ED5000-memory.dmpFilesize
84KB
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memory/3812-56-0x0000000005650000-0x0000000005660000-memory.dmpFilesize
64KB
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memory/3812-80-0x0000000007E70000-0x0000000007E81000-memory.dmpFilesize
68KB
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memory/3812-79-0x0000000005650000-0x0000000005660000-memory.dmpFilesize
64KB
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memory/3812-67-0x0000000070080000-0x00000000700CC000-memory.dmpFilesize
304KB
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memory/3812-77-0x0000000007B50000-0x0000000007BF4000-memory.dmpFilesize
656KB
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memory/3812-68-0x0000000070200000-0x0000000070557000-memory.dmpFilesize
3.3MB
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memory/4236-263-0x0000000000400000-0x00000000008DF000-memory.dmpFilesize
4.9MB
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memory/4236-256-0x0000000000400000-0x00000000008DF000-memory.dmpFilesize
4.9MB
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memory/4552-1-0x0000000004F60000-0x000000000535F000-memory.dmpFilesize
4.0MB
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memory/4552-65-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/4552-2-0x0000000005360000-0x0000000005C4B000-memory.dmpFilesize
8.9MB
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memory/4552-3-0x0000000000400000-0x0000000003111000-memory.dmpFilesize
45.1MB
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memory/4552-53-0x0000000004F60000-0x000000000535F000-memory.dmpFilesize
4.0MB