Analysis
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max time kernel
150s -
max time network
145s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
04/05/2024, 11:47
Static task
static1
Behavioral task
behavioral1
Sample
4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe
Resource
win10v2004-20240419-en
General
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Target
4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe
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Size
4.2MB
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MD5
5a02bb23109f278fd6a69dfe232586c9
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SHA1
2ba2258364f5a696abe4e7adecd22414f2e79845
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SHA256
4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae
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SHA512
c6aaf12309d08a61c44b855f3127e4422b3f5d26147ba7d1dffcd594c136cc3227fdccbfcd345c6a38da84b6ba7cadfc8829401773e2d74ce0732fc8168df267
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SSDEEP
98304:hFm33nTRQYXLAJmF7JMhpwIV/CevqNafpDPjSEtx+w/pLQ:kdAuJMhpXpCevqOr2EtxJ/NQ
Malware Config
Signatures
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Glupteba payload 19 IoCs
resource yara_rule behavioral2/memory/2388-2-0x0000000003F90000-0x000000000487B000-memory.dmp family_glupteba behavioral2/memory/2388-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2388-134-0x0000000003F90000-0x000000000487B000-memory.dmp family_glupteba behavioral2/memory/2388-132-0x0000000000400000-0x0000000001DFE000-memory.dmp family_glupteba behavioral2/memory/2388-193-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/1572-192-0x0000000000400000-0x0000000001DFE000-memory.dmp family_glupteba behavioral2/memory/2644-200-0x0000000000400000-0x0000000001DFE000-memory.dmp family_glupteba behavioral2/memory/2644-211-0x0000000000400000-0x0000000001DFE000-memory.dmp family_glupteba behavioral2/memory/2644-215-0x0000000000400000-0x0000000001DFE000-memory.dmp family_glupteba behavioral2/memory/2644-219-0x0000000000400000-0x0000000001DFE000-memory.dmp family_glupteba behavioral2/memory/2644-223-0x0000000000400000-0x0000000001DFE000-memory.dmp family_glupteba behavioral2/memory/2644-227-0x0000000000400000-0x0000000001DFE000-memory.dmp family_glupteba behavioral2/memory/2644-231-0x0000000000400000-0x0000000001DFE000-memory.dmp family_glupteba behavioral2/memory/2644-235-0x0000000000400000-0x0000000001DFE000-memory.dmp family_glupteba behavioral2/memory/2644-239-0x0000000000400000-0x0000000001DFE000-memory.dmp family_glupteba behavioral2/memory/2644-243-0x0000000000400000-0x0000000001DFE000-memory.dmp family_glupteba behavioral2/memory/2644-247-0x0000000000400000-0x0000000001DFE000-memory.dmp family_glupteba behavioral2/memory/2644-251-0x0000000000400000-0x0000000001DFE000-memory.dmp family_glupteba behavioral2/memory/2644-255-0x0000000000400000-0x0000000001DFE000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 3892 netsh.exe -
Executes dropped EXE 4 IoCs
pid Process 2644 csrss.exe 4512 injector.exe 1888 windefender.exe 3724 windefender.exe -
resource yara_rule behavioral2/files/0x000200000002aa35-203.dat upx behavioral2/memory/1888-206-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3724-208-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/1888-209-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3724-213-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3724-221-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3724-233-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2994005945-4089876968-1367784197-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2994005945-4089876968-1367784197-1000\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.
description ioc Process File opened for modification \??\WinMonFS csrss.exe -
Drops file in System32 directory 7 IoCs
description ioc Process File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe -
Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.
description ioc Process File opened (read-only) \??\VBoxMiniRdrDN 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe -
Drops file in Windows directory 4 IoCs
description ioc Process File opened for modification C:\Windows\rss 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe File created C:\Windows\rss\csrss.exe 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe File created C:\Windows\windefender.exe csrss.exe File opened for modification C:\Windows\windefender.exe csrss.exe -
Launches sc.exe 1 IoCs
Sc.exe is a Windows utlilty to control services on the system.
pid Process 3560 sc.exe -
pid Process 4076 powershell.exe 4360 powershell.exe 3744 powershell.exe 4788 powershell.exe 1440 powershell.exe 4144 powershell.exe 1888 powershell.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2040 schtasks.exe 3336 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
description ioc Process 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\UNCAsIntranet = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-171 = "Central Daylight Time (Mexico)" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2942 = "Sao Tome Standard Time" 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople 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\2a\52C64B7E\@tzres.dll,-1041 = "Ulaanbaatar Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time" 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1972 = "Belarus Standard Time" windefender.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\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2042 = "Eastern Standard Time (Mexico)" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3142 = "South Sudan Standard Time" 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates 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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time" 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2751 = "Tomsk Daylight Time" 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-571 = "China Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time" 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1042 = "Ulaanbaatar Standard Time" 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.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\2a\52C64B7E\@tzres.dll,-2572 = "Turks and Caicos Standard Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs 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\2a\52C64B7E\@tzres.dll,-92 = "Pacific SA Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-3141 = "South Sudan Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time" 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time" 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time" 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.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\@tzres.dll,-911 = "Mauritius Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2592 = "Tocantins Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time" 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time" 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-371 = "Jerusalem Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-142 = "Canada Central Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-931 = "Coordinated Universal Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-382 = "South Africa Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-691 = "Tasmania Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-352 = "FLE Standard Time" 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-562 = "SE Asia Standard Time" 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\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\@tzres.dll,-891 = "Morocco Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-385 = "Namibia Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time" 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.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\@tzres.dll,-2342 = "Haiti Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2872 = "Magallanes Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-451 = "Caucasus Daylight Time" 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs 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\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust powershell.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4144 powershell.exe 4144 powershell.exe 2388 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 2388 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 1888 powershell.exe 1888 powershell.exe 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 4076 powershell.exe 4076 powershell.exe 4360 powershell.exe 4360 powershell.exe 3744 powershell.exe 3744 powershell.exe 4788 powershell.exe 4788 powershell.exe 1440 powershell.exe 1440 powershell.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 2644 csrss.exe 2644 csrss.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 2644 csrss.exe 2644 csrss.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 2644 csrss.exe 2644 csrss.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe 4512 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
description pid Process Token: SeDebugPrivilege 4144 powershell.exe Token: SeDebugPrivilege 2388 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe Token: SeImpersonatePrivilege 2388 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe Token: SeDebugPrivilege 1888 powershell.exe Token: SeDebugPrivilege 4076 powershell.exe Token: SeDebugPrivilege 4360 powershell.exe Token: SeDebugPrivilege 3744 powershell.exe Token: SeDebugPrivilege 4788 powershell.exe Token: SeDebugPrivilege 1440 powershell.exe Token: SeSystemEnvironmentPrivilege 2644 csrss.exe Token: SeSecurityPrivilege 3560 sc.exe Token: SeSecurityPrivilege 3560 sc.exe -
Suspicious use of WriteProcessMemory 36 IoCs
description pid Process procid_target PID 2388 wrote to memory of 4144 2388 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 82 PID 2388 wrote to memory of 4144 2388 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 82 PID 2388 wrote to memory of 4144 2388 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 82 PID 1572 wrote to memory of 1888 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 112 PID 1572 wrote to memory of 1888 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 112 PID 1572 wrote to memory of 1888 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 112 PID 1572 wrote to memory of 2376 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 90 PID 1572 wrote to memory of 2376 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 90 PID 2376 wrote to memory of 3892 2376 cmd.exe 92 PID 2376 wrote to memory of 3892 2376 cmd.exe 92 PID 1572 wrote to memory of 4076 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 93 PID 1572 wrote to memory of 4076 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 93 PID 1572 wrote to memory of 4076 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 93 PID 1572 wrote to memory of 4360 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 95 PID 1572 wrote to memory of 4360 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 95 PID 1572 wrote to memory of 4360 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 95 PID 1572 wrote to memory of 2644 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 97 PID 1572 wrote to memory of 2644 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 97 PID 1572 wrote to memory of 2644 1572 4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe 97 PID 2644 wrote to memory of 3744 2644 csrss.exe 98 PID 2644 wrote to memory of 3744 2644 csrss.exe 98 PID 2644 wrote to memory of 3744 2644 csrss.exe 98 PID 2644 wrote to memory of 4788 2644 csrss.exe 103 PID 2644 wrote to memory of 4788 2644 csrss.exe 103 PID 2644 wrote to memory of 4788 2644 csrss.exe 103 PID 2644 wrote to memory of 1440 2644 csrss.exe 106 PID 2644 wrote to memory of 1440 2644 csrss.exe 106 PID 2644 wrote to memory of 1440 2644 csrss.exe 106 PID 2644 wrote to memory of 4512 2644 csrss.exe 108 PID 2644 wrote to memory of 4512 2644 csrss.exe 108 PID 1888 wrote to memory of 4192 1888 windefender.exe 114 PID 1888 wrote to memory of 4192 1888 windefender.exe 114 PID 1888 wrote to memory of 4192 1888 windefender.exe 114 PID 4192 wrote to memory of 3560 4192 cmd.exe 115 PID 4192 wrote to memory of 3560 4192 cmd.exe 115 PID 4192 wrote to memory of 3560 4192 cmd.exe 115 -
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\4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe"C:\Users\Admin\AppData\Local\Temp\4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2388 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4144
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C:\Users\Admin\AppData\Local\Temp\4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.exe"C:\Users\Admin\AppData\Local\Temp\4ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae.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:1572 -
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:1888
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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:2376 -
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:3892
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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:4076
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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:4360
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2644 -
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:3744
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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:3336
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:2044
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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:4788
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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:1440
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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:4512
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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:2040
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C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1888 -
C:\Windows\SysWOW64\cmd.execmd.exe /C sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)5⤵
- Suspicious use of WriteProcessMemory
PID:4192 -
C:\Windows\SysWOW64\sc.exesc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)6⤵
- Launches sc.exe
- Suspicious use of AdjustPrivilegeToken
PID:3560
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3724
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize2KB
MD5d0c46cad6c0778401e21910bd6b56b70
SHA17be418951ea96326aca445b8dfe449b2bfa0dca6
SHA2569600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
SHA512057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5274600546eaede1dc36419973f673510
SHA1446a0b275ac010f926f7427612c29d6021a6b8aa
SHA25616d27e4dd7828817a79c94fc772b56bae98516f2aebc20b59ad7c3c96363061c
SHA5120f8db0339ac2b97e655a6a74d833183f66380f9518c927ed30ba80e2e5254b8919359bcb0c0b330b6a3adaebe1e5cb620f5e7e6fa2f78a8a7c937b998657fa2c
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5d921990c0bceeaefb74bb08dfb7a06fc
SHA1298452d133ee83e30b838d95d4d5697390029416
SHA2564a765b508f09f0da7f913e1707bfc0c8e14ed5f62124ba5a159779de21928938
SHA512428ab99ed318c12baf65e5995d7a6e014137559c9b537dfe623f9163bcf65ec922b7cdf7b5f4ef1e327f63030942b2070fc11d2391575be8b062dbd454173bf0
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5fc94573a9915c5512cebd624f4f50939
SHA12130a5806bd65f3dbbe639ce87633faa6b3f3ea8
SHA256dd6a25269746570e661c04c66ac988caded72643e230168c2d45361b84fbc113
SHA5125f31cd800e6b42d7e9a9f99490d7906d336268803d089269347fd4ce995ad5887bb1a4ae1e729539bec243f72a89cd7c72a90fbe74ec6a123cd28b5ba2898462
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5907f1d802d7c2792a20d2dc262a2e420
SHA1ae394b5a408d6c4ce5256317cbaf4709f67fdac6
SHA256764aabe1ace1427240b62734a56e6d5b31fb77c54e0e999e2dbde8346672da31
SHA512084b59f8d4bcb05217db9d33a2e726713fb08531fc6c0c9889a2e60fa286bc78a5f95fed549ec8ad098b6e90b7b5c8fdfb7c8403b528053d39a7d55342c24b74
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5b0d6d076f4e409dca774814bbf85c2fa
SHA127c94a21fc136fc35eb28920b7ab621b66805de9
SHA25643de1cf8c69fa10d95832839939751cae1cbc2daed6263578a829a1225ce5fb9
SHA512fe61b73ff9be33cffe6a57ec8fd9bd7d0f9650e75b42b24a95e86b4329ecfbac1a18cbff283d8a82eb544ef4181e86b8e94d64e8ab93dc14db193c16f33c4a14
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Filesize
4.2MB
MD55a02bb23109f278fd6a69dfe232586c9
SHA12ba2258364f5a696abe4e7adecd22414f2e79845
SHA2564ca81fbc772225cfc54132af6dc24a02d81347c262075d78fac44a14b944fbae
SHA512c6aaf12309d08a61c44b855f3127e4422b3f5d26147ba7d1dffcd594c136cc3227fdccbfcd345c6a38da84b6ba7cadfc8829401773e2d74ce0732fc8168df267
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec