Analysis
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max time kernel
150s -
max time network
141s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
17-05-2024 12:44
Static task
static1
Behavioral task
behavioral1
Sample
a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe
Resource
win10v2004-20240508-en
General
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Target
a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe
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Size
4.1MB
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MD5
f437c5035e441d31d8204095aef8e93e
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SHA1
147ac4854983e7cb64329c14aa774e54d54efdc1
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SHA256
a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200
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SHA512
d3fac42a32c5324358101baea6391a18647b18e535316f1f6e79a2e7b9d64275b0b4448dca114af3d1f20522e8e327b57a0d4cd10b7170ff47d98f232a68f7e9
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SSDEEP
98304:/BVs1p4PpCxl89qkqVHLjfQjDTn2r+Nb3:Ja1p4P0l8MfVLMTr3
Malware Config
Signatures
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Glupteba payload 19 IoCs
resource yara_rule behavioral1/memory/2852-2-0x0000000004C00000-0x00000000054EB000-memory.dmp family_glupteba behavioral1/memory/2852-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/2852-4-0x0000000000400000-0x0000000002B0D000-memory.dmp family_glupteba behavioral1/memory/2852-56-0x0000000004C00000-0x00000000054EB000-memory.dmp family_glupteba behavioral1/memory/2852-57-0x0000000000400000-0x0000000002B0D000-memory.dmp family_glupteba behavioral1/memory/2852-83-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral1/memory/4928-82-0x0000000000400000-0x0000000002B0D000-memory.dmp family_glupteba behavioral1/memory/4928-139-0x0000000000400000-0x0000000002B0D000-memory.dmp family_glupteba behavioral1/memory/2864-163-0x0000000000400000-0x0000000002B0D000-memory.dmp family_glupteba behavioral1/memory/2864-222-0x0000000000400000-0x0000000002B0D000-memory.dmp family_glupteba behavioral1/memory/2864-224-0x0000000000400000-0x0000000002B0D000-memory.dmp family_glupteba behavioral1/memory/2864-227-0x0000000000400000-0x0000000002B0D000-memory.dmp family_glupteba behavioral1/memory/2864-230-0x0000000000400000-0x0000000002B0D000-memory.dmp family_glupteba behavioral1/memory/2864-234-0x0000000000400000-0x0000000002B0D000-memory.dmp family_glupteba behavioral1/memory/2864-237-0x0000000000400000-0x0000000002B0D000-memory.dmp family_glupteba behavioral1/memory/2864-239-0x0000000000400000-0x0000000002B0D000-memory.dmp family_glupteba behavioral1/memory/2864-242-0x0000000000400000-0x0000000002B0D000-memory.dmp family_glupteba behavioral1/memory/2864-246-0x0000000000400000-0x0000000002B0D000-memory.dmp family_glupteba behavioral1/memory/2864-249-0x0000000000400000-0x0000000002B0D000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 4264 netsh.exe -
Executes dropped EXE 2 IoCs
pid Process 2864 csrss.exe 3892 injector.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" csrss.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Manipulates WinMonFS driver. 1 IoCs
Roottkits write to WinMonFS to hide directories/files from being detected.
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 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\rss a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe File created C:\Windows\rss\csrss.exe a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe -
pid Process 412 powershell.exe 2996 powershell.exe 4444 powershell.exe 2124 powershell.exe 4852 powershell.exe 820 powershell.exe 756 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 3228 schtasks.exe 2136 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.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\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.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\TrustedPeople\CRLs powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-271 = "Greenwich Daylight Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1821 = "Russia TZ 1 Daylight Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-81 = "Atlantic Daylight Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-112 = "Eastern Standard Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-562 = "SE Asia Standard Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.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,-332 = "E. Europe Standard Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs 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\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-742 = "New Zealand Standard Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-652 = "AUS Central Standard Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-171 = "Central Daylight Time (Mexico)" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.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\Policies\Microsoft\SystemCertificates\trust\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-291 = "Central European Daylight Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs 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\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs 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\C:\Windows\system32\,@tzres.dll,-1662 = "Bahia Standard Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-181 = "Mountain Daylight Time (Mexico)" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1931 = "Russia TZ 11 Daylight Time" a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing powershell.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2124 powershell.exe 2124 powershell.exe 2852 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 2852 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 4852 powershell.exe 4852 powershell.exe 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 820 powershell.exe 820 powershell.exe 820 powershell.exe 756 powershell.exe 756 powershell.exe 412 powershell.exe 412 powershell.exe 2996 powershell.exe 2996 powershell.exe 4444 powershell.exe 4444 powershell.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 2864 csrss.exe 2864 csrss.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 2864 csrss.exe 2864 csrss.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe 3892 injector.exe -
Suspicious use of AdjustPrivilegeToken 10 IoCs
description pid Process Token: SeDebugPrivilege 2124 powershell.exe Token: SeDebugPrivilege 2852 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Token: SeImpersonatePrivilege 2852 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe Token: SeDebugPrivilege 4852 powershell.exe Token: SeDebugPrivilege 820 powershell.exe Token: SeDebugPrivilege 756 powershell.exe Token: SeDebugPrivilege 412 powershell.exe Token: SeDebugPrivilege 2996 powershell.exe Token: SeDebugPrivilege 4444 powershell.exe Token: SeSystemEnvironmentPrivilege 2864 csrss.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2852 wrote to memory of 2124 2852 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 92 PID 2852 wrote to memory of 2124 2852 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 92 PID 2852 wrote to memory of 2124 2852 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 92 PID 4928 wrote to memory of 4852 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 98 PID 4928 wrote to memory of 4852 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 98 PID 4928 wrote to memory of 4852 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 98 PID 4928 wrote to memory of 4552 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 101 PID 4928 wrote to memory of 4552 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 101 PID 4552 wrote to memory of 4264 4552 cmd.exe 103 PID 4552 wrote to memory of 4264 4552 cmd.exe 103 PID 4928 wrote to memory of 820 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 105 PID 4928 wrote to memory of 820 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 105 PID 4928 wrote to memory of 820 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 105 PID 4928 wrote to memory of 756 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 108 PID 4928 wrote to memory of 756 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 108 PID 4928 wrote to memory of 756 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 108 PID 4928 wrote to memory of 2864 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 110 PID 4928 wrote to memory of 2864 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 110 PID 4928 wrote to memory of 2864 4928 a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe 110 PID 2864 wrote to memory of 412 2864 csrss.exe 111 PID 2864 wrote to memory of 412 2864 csrss.exe 111 PID 2864 wrote to memory of 412 2864 csrss.exe 111 PID 2864 wrote to memory of 2996 2864 csrss.exe 117 PID 2864 wrote to memory of 2996 2864 csrss.exe 117 PID 2864 wrote to memory of 2996 2864 csrss.exe 117 PID 2864 wrote to memory of 4444 2864 csrss.exe 119 PID 2864 wrote to memory of 4444 2864 csrss.exe 119 PID 2864 wrote to memory of 4444 2864 csrss.exe 119 PID 2864 wrote to memory of 3892 2864 csrss.exe 121 PID 2864 wrote to memory of 3892 2864 csrss.exe 121 -
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\a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe"C:\Users\Admin\AppData\Local\Temp\a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2852 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2124
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C:\Users\Admin\AppData\Local\Temp\a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.exe"C:\Users\Admin\AppData\Local\Temp\a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200.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:4928 -
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:4852
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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:4552 -
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:4264
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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:820
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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:756
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2864 -
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:412
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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:3228
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:3684
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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:2996
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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:4444
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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:3892
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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:2136
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize2KB
MD53d086a433708053f9bf9523e1d87a4e8
SHA1b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28
SHA2566f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69
SHA512931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5617636d6cdf57f6cc1237ef16129f821
SHA1113e3e079318331129267f1a8f0630f2b3693b26
SHA2567d41142c01995df71de36e63b32bce0456f82a6f764b29fb47230e6edba56e44
SHA512ffeea883e5fd25ab2d448f59255c68538735ebda72ac17eefa1acc7a1ddc98274d011bbcf5fb4bc7b66b32df332ae8c60db2a98f31c7919eebabfc33f839d1f1
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD595b9b2bb7c823f7f5e0a39889a5c45ec
SHA1f800f7c8d0431f096d992dd68f5382c83fd08039
SHA256932ed4c144f4bd5b33acf99a192b59a684ea578c3d4ad261860e95315619e99e
SHA5120460c090a12dbbc6f53885efa4918a1150e9711547fd050b11793bb66d4d266dd106bd5604c3a0e398cae524b2b5febfa379b5cbe3e16baa9bcf1bb9e3eed9a8
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD524e1c4652419309d79235b303bf551ee
SHA1f17eec15a271759b16707df01e61c87fa3321c2d
SHA2563f0927cd9031a860c419b914a6238d512f1aed57b14837bc386fe5d754d6a688
SHA512efeb9c8d252a7d5cd5761356e8768fe54090b451f950e305ca4bd66bcb14426cbeb9d1623d98536127f8ece877cb0ef3102769e706b7151b83d5f533a7363535
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD565417c872b0f412dec1730ed58c24640
SHA17bf27baf15b5885bf624305b0789b13eeb5e1e52
SHA256bbdcfe0bd622cb328026497d5aacd8614654922451f68995cb6b6f948a2fe275
SHA51214aae701a98222dd5aacb9284e977eb89129b55f10040a76955fcc3076a86d5fb6d0ccd32e62b9e678b1af7950170dd92ffb204dc2a63144cea613281d740571
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5adf284ced571f1f3b1ed09e09360b81c
SHA176f422cdd60d91af1303b8d0ea5ffe5ba267b9b4
SHA256846fc0d390c64d4f8040184aea7b5aef9bd235da8eac04a0e978ab8501d04639
SHA5126afb57bba9473bfa73807aba2991b328d131eaf234258f5ddebfcaa296369dac09590f4ac8ec6ddbd3ca14d6ded7436ba6adfcc71e8a030badfa959d5fa65a08
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Filesize
4.1MB
MD5f437c5035e441d31d8204095aef8e93e
SHA1147ac4854983e7cb64329c14aa774e54d54efdc1
SHA256a4decfc7bf2f9bd132a2974a3f9edb4931b303c5b15c896a9493eed733d0d200
SHA512d3fac42a32c5324358101baea6391a18647b18e535316f1f6e79a2e7b9d64275b0b4448dca114af3d1f20522e8e327b57a0d4cd10b7170ff47d98f232a68f7e9