Analysis
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max time kernel
149s -
max time network
150s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
27-04-2024 22:24
Static task
static1
Behavioral task
behavioral1
Sample
4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe
Resource
win10v2004-20240419-en
General
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Target
4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe
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Size
4.2MB
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MD5
5b412e8d19ec18d694548112832773c5
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SHA1
b1dc18da9bd9326e7069c77246c7718352a52582
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SHA256
4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d
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SHA512
67ba5641d2865907ea39df1f917429c0151970e56e20dc8880e959bc114008cccf0d1a27cbace44ec6a81963d38d42cb1f5950e0cadeb261b19583c88f436772
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SSDEEP
98304:PamOmyh13YwSD+iffg9rOMOczucEEdNxQlfwo87Elwi0PG1g:PTy8Jy4o9ecZxQhwo8IinPG1g
Malware Config
Signatures
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Glupteba payload 18 IoCs
Processes:
resource yara_rule behavioral2/memory/2924-2-0x0000000003F00000-0x00000000047EB000-memory.dmp family_glupteba behavioral2/memory/2924-3-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/2924-96-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/2924-134-0x0000000003F00000-0x00000000047EB000-memory.dmp family_glupteba behavioral2/memory/1928-176-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/2860-199-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/2860-211-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/2860-215-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/2860-220-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/2860-223-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/2860-227-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/2860-231-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/2860-235-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/2860-239-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/2860-243-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/2860-247-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/2860-251-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba behavioral2/memory/2860-255-0x0000000000400000-0x0000000001DFB000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid process 4596 netsh.exe -
Executes dropped EXE 4 IoCs
Processes:
csrss.exeinjector.exewindefender.exewindefender.exepid process 2860 csrss.exe 5004 injector.exe 2200 windefender.exe 4148 windefender.exe -
Processes:
resource yara_rule C:\Windows\windefender.exe upx behavioral2/memory/2200-205-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/4148-208-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/2200-209-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/4148-213-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/4148-221-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
csrss.exe4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1230210488-3096403634-4129516247-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" csrss.exe Set value (str) \REGISTRY\USER\S-1-5-21-1230210488-3096403634-4129516247-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.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 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.
Processes:
4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe -
Drops file in Windows directory 4 IoCs
Processes:
4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.execsrss.exedescription ioc process File created C:\Windows\rss\csrss.exe 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe File created C:\Windows\windefender.exe csrss.exe File opened for modification C:\Windows\windefender.exe csrss.exe File opened for modification C:\Windows\rss 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe -
Launches sc.exe 1 IoCs
Sc.exe is a Windows utlilty to control services on the system.
Processes:
sc.exepid process 384 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 3132 schtasks.exe 1264 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exewindefender.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1831 = "Russia TZ 2 Daylight Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-721 = "Central Pacific Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2892 = "Sudan Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2392 = "Aleutian Standard Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-271 = "Greenwich Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1892 = "Russia TZ 3 Standard Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1872 = "Russia TZ 7 Standard Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-211 = "Pacific Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-562 = "SE Asia Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs 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\2a\52C64B7E\@tzres.dll,-661 = "Cen. Australia Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1021 = "Bangladesh Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-104 = "Central Brazilian Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-72 = "Newfoundland Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1411 = "Syria Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2572 = "Turks and Caicos Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-181 = "Mountain Daylight Time (Mexico)" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-412 = "E. Africa Standard Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.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\TrustedPeople\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-671 = "AUS Eastern Daylight Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-222 = "Alaskan Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-81 = "Atlantic Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2432 = "Cuba 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\C:\Windows\system32\,@tzres.dll,-1721 = "Libya Daylight Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-181 = "Mountain Daylight Time (Mexico)" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-105 = "Central Brazilian Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2452 = "Saint Pierre Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-442 = "Arabian Standard Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time" 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" powershell.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exe4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exepowershell.exe4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid process 2948 powershell.exe 2948 powershell.exe 2924 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe 2924 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe 3212 powershell.exe 3212 powershell.exe 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe 4344 powershell.exe 4344 powershell.exe 1624 powershell.exe 1624 powershell.exe 1812 powershell.exe 1812 powershell.exe 1256 powershell.exe 1256 powershell.exe 2880 powershell.exe 2880 powershell.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 2860 csrss.exe 2860 csrss.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 2860 csrss.exe 2860 csrss.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 2860 csrss.exe 2860 csrss.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe 5004 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
powershell.exe4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exesc.exedescription pid process Token: SeDebugPrivilege 2948 powershell.exe Token: SeDebugPrivilege 2924 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Token: SeImpersonatePrivilege 2924 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe Token: SeDebugPrivilege 3212 powershell.exe Token: SeDebugPrivilege 4344 powershell.exe Token: SeDebugPrivilege 1624 powershell.exe Token: SeDebugPrivilege 1812 powershell.exe Token: SeDebugPrivilege 1256 powershell.exe Token: SeDebugPrivilege 2880 powershell.exe Token: SeSystemEnvironmentPrivilege 2860 csrss.exe Token: SeSecurityPrivilege 384 sc.exe Token: SeSecurityPrivilege 384 sc.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.execmd.execsrss.exewindefender.execmd.exedescription pid process target process PID 2924 wrote to memory of 2948 2924 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe powershell.exe PID 2924 wrote to memory of 2948 2924 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe powershell.exe PID 2924 wrote to memory of 2948 2924 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe powershell.exe PID 1928 wrote to memory of 3212 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe powershell.exe PID 1928 wrote to memory of 3212 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe powershell.exe PID 1928 wrote to memory of 3212 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe powershell.exe PID 1928 wrote to memory of 4124 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe cmd.exe PID 1928 wrote to memory of 4124 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe cmd.exe PID 4124 wrote to memory of 4596 4124 cmd.exe netsh.exe PID 4124 wrote to memory of 4596 4124 cmd.exe netsh.exe PID 1928 wrote to memory of 4344 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe powershell.exe PID 1928 wrote to memory of 4344 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe powershell.exe PID 1928 wrote to memory of 4344 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe powershell.exe PID 1928 wrote to memory of 1624 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe powershell.exe PID 1928 wrote to memory of 1624 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe powershell.exe PID 1928 wrote to memory of 1624 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe powershell.exe PID 1928 wrote to memory of 2860 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe csrss.exe PID 1928 wrote to memory of 2860 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe csrss.exe PID 1928 wrote to memory of 2860 1928 4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe csrss.exe PID 2860 wrote to memory of 1812 2860 csrss.exe powershell.exe PID 2860 wrote to memory of 1812 2860 csrss.exe powershell.exe PID 2860 wrote to memory of 1812 2860 csrss.exe powershell.exe PID 2860 wrote to memory of 1256 2860 csrss.exe powershell.exe PID 2860 wrote to memory of 1256 2860 csrss.exe powershell.exe PID 2860 wrote to memory of 1256 2860 csrss.exe powershell.exe PID 2860 wrote to memory of 2880 2860 csrss.exe powershell.exe PID 2860 wrote to memory of 2880 2860 csrss.exe powershell.exe PID 2860 wrote to memory of 2880 2860 csrss.exe powershell.exe PID 2860 wrote to memory of 5004 2860 csrss.exe injector.exe PID 2860 wrote to memory of 5004 2860 csrss.exe injector.exe PID 2200 wrote to memory of 3636 2200 windefender.exe cmd.exe PID 2200 wrote to memory of 3636 2200 windefender.exe cmd.exe PID 2200 wrote to memory of 3636 2200 windefender.exe cmd.exe PID 3636 wrote to memory of 384 3636 cmd.exe sc.exe PID 3636 wrote to memory of 384 3636 cmd.exe sc.exe PID 3636 wrote to memory of 384 3636 cmd.exe sc.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\4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe"C:\Users\Admin\AppData\Local\Temp\4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2924 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2948
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C:\Users\Admin\AppData\Local\Temp\4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.exe"C:\Users\Admin\AppData\Local\Temp\4b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d.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:1928 -
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
PID:3212
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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:4124 -
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:4596
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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
PID:4344
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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
PID:1624
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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:2860 -
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
PID:1812
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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:3132
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:1728
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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
PID:1256
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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
PID:2880
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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:5004
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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:1264
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C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2200 -
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:3636 -
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:384
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4148
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
MD5436a91b8f7f0bb0e186b01a32fdb41ed
SHA1fbafc7a1095528efddd2245cbcd11926f0840bba
SHA256e9259109a84eb1d4dcba8af87b0f3aa04082be6b577fad834711609272fbb665
SHA512ca387f9242e6b06d268c05ef9d2c40e468c8d7c07e7e41fe81daf3724b073a5705699dea4ee2ba01648b8f01378c1a207019a65997e9b98c7d661ea6e0c39efc
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5ad16c90104f932b782e9814a0098e78b
SHA1073ef5d53404753502b5aec7b5a7e4ad4be975ec
SHA256d71b8853f9a60e2cfccd910cc6fa5116931840bb925357a2808b04a8b0156d38
SHA5123e177d25ca12cf167db8c5a49ba0c451baab76b91a061e2948e82ebb9d37f096c9172a72e12725abd327caa9ec225f09ba43104f85f85e1c4504e469b954c2f6
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD58faeff5832ac23d06183f8068acc4aa8
SHA162bdec048a5bfd1e23a0ba54672d176d73ca3b55
SHA25695a37e37ef8db682b8452532bafafa53907d5bd36b2773c7712631f176cd3f6e
SHA512a18ab7cab2618673636b4bf4e938551e84fc73caa9101a6be9e47e4a820b5a76f4c018739bd5312ceff051a96afec30df2977610c2866bc765f48b7d845b4e0a
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD520426b85b6e0bcc0db0b9fcb68728345
SHA103823490352e5eb5cdc7540a5261421cec3cae5b
SHA25611f81f4eefef086fc01228fc34c89821ce877d97e5a02ec96cbe1f9109c20a93
SHA5128148aeaad4df06f65aa99c213ea349c8d962ff5737ba2b1b1184aa201e528b31ef071f1f017fda1e0a87cf38780853eaa25233bf0ecbd070880fe01f3e79f752
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD568948bb0df29120dad6e5b7788242abe
SHA1cee0317ce75e2e949ba4bb884e3302215cd2d797
SHA256e5d49df5034886e959de5f7653969d8c331699fe70be324b5fbc4bee0771c4a9
SHA5129fc0282a12b1e09be6c062d534861a603266dd9549a3fbced32de6c244ab3b4b48a03a9c4c64c391335f57a062ddfc175078d8de81edb647d8c4eb7b2bf70e6c
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Filesize
4.2MB
MD55b412e8d19ec18d694548112832773c5
SHA1b1dc18da9bd9326e7069c77246c7718352a52582
SHA2564b8ea28299d563187dbaeac5036d719b2bb8c0d176a56d73eed708d000b4a86d
SHA51267ba5641d2865907ea39df1f917429c0151970e56e20dc8880e959bc114008cccf0d1a27cbace44ec6a81963d38d42cb1f5950e0cadeb261b19583c88f436772
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec