Analysis
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max time kernel
150s -
max time network
151s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
19-05-2024 21:51
Static task
static1
Behavioral task
behavioral1
Sample
b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe
Resource
win10v2004-20240508-en
General
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Target
b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe
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Size
4.1MB
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MD5
f447c4d7756fa554f3d830aa62fdd6e7
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SHA1
f07117ec1e991ddf0fe0cc00b4558b3ab9ec6297
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SHA256
b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8
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SHA512
512ebbe70c6bc7eb17f86f3b7f1c885959afe3dc2e720e3f69ac614db2180fe1d023ede260241f1342f12dbaa6ee3cb82de580e1d9966fd12e93356cba363f5e
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SSDEEP
98304:UX33DbWGkLHuFK+TwQmBC6reQ4TTNXYvI8KgvjrB0rf:UXPWAwQyCdJYw8Kggf
Malware Config
Signatures
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Glupteba payload 19 IoCs
Processes:
resource yara_rule behavioral2/memory/2660-2-0x00000000049E0000-0x00000000052CB000-memory.dmp family_glupteba behavioral2/memory/2660-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2660-63-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/2660-78-0x00000000049E0000-0x00000000052CB000-memory.dmp family_glupteba behavioral2/memory/2660-121-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/5052-120-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/5052-194-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4260-202-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4260-213-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4260-216-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4260-219-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4260-224-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4260-228-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4260-232-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4260-236-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4260-239-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4260-244-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4260-248-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/4260-252-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid process 4952 netsh.exe -
Executes dropped EXE 4 IoCs
Processes:
csrss.exeinjector.exewindefender.exewindefender.exepid process 4260 csrss.exe 3264 injector.exe 1788 windefender.exe 3860 windefender.exe -
Processes:
resource yara_rule C:\Windows\windefender.exe upx behavioral2/memory/1788-208-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3860-210-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/1788-211-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3860-217-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3860-225-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2457560273-69882387-977367775-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\S-1-5-21-2457560273-69882387-977367775-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" csrss.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Manipulates WinMonFS driver. 1 IoCs
Roottkits write to WinMonFS to hide directories/files from being detected.
Processes:
csrss.exedescription ioc process File opened for modification \??\WinMonFS csrss.exe -
Drops file in System32 directory 7 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File 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 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 -
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:
b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe -
Drops file in Windows directory 4 IoCs
Processes:
b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.execsrss.exedescription ioc process File opened for modification C:\Windows\rss b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe File created C:\Windows\rss\csrss.exe b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.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.
Processes:
sc.exepid process 4252 sc.exe -
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid process 3152 powershell.exe 4164 powershell.exe 2056 powershell.exe 3496 powershell.exe 1256 powershell.exe 4132 powershell.exe 5096 powershell.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 4576 schtasks.exe 2684 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exepowershell.exepowershell.exewindefender.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,-3142 = "South Sudan Standard Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-151 = "Central America Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-622 = "Korea Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-332 = "E. Europe Standard Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.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" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2431 = "Cuba Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1841 = "Russia TZ 4 Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-532 = "Sri Lanka Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-41 = "E. South America Daylight Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-271 = "Greenwich Daylight Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-981 = "Kamchatka Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.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,-152 = "Central America Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.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,-2892 = "Sudan Standard Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.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,-2002 = "Cabo Verde Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-171 = "Central Daylight Time (Mexico)" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1662 = "Bahia Standard Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.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,-441 = "Arabian Daylight Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2491 = "Aus Central W. Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-961 = "Paraguay Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-201 = "US Mountain Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2001 = "Cabo Verde Daylight Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2392 = "Aleutian Standard Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.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\@tzres.dll,-2321 = "Sakhalin Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs 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\@tzres.dll,-391 = "Arab Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-12 = "Azores Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)" b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2162 = "Altai Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-571 = "China Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exeb11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exepowershell.exeb11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid process 4132 powershell.exe 4132 powershell.exe 2660 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe 2660 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe 5096 powershell.exe 5096 powershell.exe 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe 3152 powershell.exe 3152 powershell.exe 4164 powershell.exe 4164 powershell.exe 2056 powershell.exe 2056 powershell.exe 3496 powershell.exe 3496 powershell.exe 1256 powershell.exe 1256 powershell.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 4260 csrss.exe 4260 csrss.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 4260 csrss.exe 4260 csrss.exe 3264 injector.exe 3264 injector.exe 4260 csrss.exe 4260 csrss.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe 3264 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
powershell.exeb11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exesc.exedescription pid process Token: SeDebugPrivilege 4132 powershell.exe Token: SeDebugPrivilege 2660 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Token: SeImpersonatePrivilege 2660 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe Token: SeDebugPrivilege 5096 powershell.exe Token: SeDebugPrivilege 3152 powershell.exe Token: SeDebugPrivilege 4164 powershell.exe Token: SeDebugPrivilege 2056 powershell.exe Token: SeDebugPrivilege 3496 powershell.exe Token: SeDebugPrivilege 1256 powershell.exe Token: SeSystemEnvironmentPrivilege 4260 csrss.exe Token: SeSecurityPrivilege 4252 sc.exe Token: SeSecurityPrivilege 4252 sc.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exeb11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.execmd.execsrss.exewindefender.execmd.exedescription pid process target process PID 2660 wrote to memory of 4132 2660 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe powershell.exe PID 2660 wrote to memory of 4132 2660 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe powershell.exe PID 2660 wrote to memory of 4132 2660 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe powershell.exe PID 5052 wrote to memory of 5096 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe powershell.exe PID 5052 wrote to memory of 5096 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe powershell.exe PID 5052 wrote to memory of 5096 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe powershell.exe PID 5052 wrote to memory of 4648 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe cmd.exe PID 5052 wrote to memory of 4648 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe cmd.exe PID 4648 wrote to memory of 4952 4648 cmd.exe netsh.exe PID 4648 wrote to memory of 4952 4648 cmd.exe netsh.exe PID 5052 wrote to memory of 3152 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe powershell.exe PID 5052 wrote to memory of 3152 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe powershell.exe PID 5052 wrote to memory of 3152 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe powershell.exe PID 5052 wrote to memory of 4164 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe powershell.exe PID 5052 wrote to memory of 4164 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe powershell.exe PID 5052 wrote to memory of 4164 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe powershell.exe PID 5052 wrote to memory of 4260 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe csrss.exe PID 5052 wrote to memory of 4260 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe csrss.exe PID 5052 wrote to memory of 4260 5052 b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe csrss.exe PID 4260 wrote to memory of 2056 4260 csrss.exe powershell.exe PID 4260 wrote to memory of 2056 4260 csrss.exe powershell.exe PID 4260 wrote to memory of 2056 4260 csrss.exe powershell.exe PID 4260 wrote to memory of 3496 4260 csrss.exe powershell.exe PID 4260 wrote to memory of 3496 4260 csrss.exe powershell.exe PID 4260 wrote to memory of 3496 4260 csrss.exe powershell.exe PID 4260 wrote to memory of 1256 4260 csrss.exe powershell.exe PID 4260 wrote to memory of 1256 4260 csrss.exe powershell.exe PID 4260 wrote to memory of 1256 4260 csrss.exe powershell.exe PID 4260 wrote to memory of 3264 4260 csrss.exe injector.exe PID 4260 wrote to memory of 3264 4260 csrss.exe injector.exe PID 1788 wrote to memory of 2408 1788 windefender.exe cmd.exe PID 1788 wrote to memory of 2408 1788 windefender.exe cmd.exe PID 1788 wrote to memory of 2408 1788 windefender.exe cmd.exe PID 2408 wrote to memory of 4252 2408 cmd.exe sc.exe PID 2408 wrote to memory of 4252 2408 cmd.exe sc.exe PID 2408 wrote to memory of 4252 2408 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\b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe"C:\Users\Admin\AppData\Local\Temp\b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2660 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4132 -
C:\Users\Admin\AppData\Local\Temp\b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.exe"C:\Users\Admin\AppData\Local\Temp\b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8.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:5052 -
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:5096 -
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:4648 -
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:4952 -
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:3152 -
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:4164 -
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:4260 -
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:2056 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:4576 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:3600
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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:3496 -
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:1256 -
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:3264 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:2684 -
C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1788 -
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:2408 -
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:4252
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3860
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
MD53c3f811d844fbda0d7a3d3b7ab1254d2
SHA1376bc3244cdef0e1a032e3c6beb63d8b059a3ac9
SHA2561fbfae45d063193663e22ba03ad6f848e703a42ca48d1aaa7de309dfb34a6ac5
SHA51249b0a9c108208a39a13d4321ba644d1d3f195a156215e33500dfab5d0acd24f41b0aebf22fc48e820bbcccec1f0ef8abd115de24eef105762ceae7d929d41dcd
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD51ee5b3eb19cfb28c11cac6d76b2beccb
SHA1bc65547a53ce32425f10492a9cad0bedc88d8195
SHA2562f441c2b9731b0454be660772f2bfec9e48041dd1282e5e97cd9288603330eac
SHA512ff2b272f2af20a343aaee4507d22ad3ce155c81985190c9c0655367bedf95b6c2b57274c9a6aef7e5757cfe60cde39b24ba641443f85d99337e387bc8680bb1f
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD542cea364b646dd95a6ce41676eea7729
SHA1b0e223adbc9127c66b79383e9ccf608600877de3
SHA256843e7867c690d3752b3cdec403c37a9bd9f4a4add1df803c006bafa75f1bae14
SHA512c6217328f4909f0adcebd182578405d3c287ef873b071030efa11e980947ff20a9a01b6c5c1db7923fe0f13a4a7f571aa66f6f58277200b0f21ccb8752e2e08d
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD58cd6c5e0a70c1ccb6c533175d73534b7
SHA18e9ab47f5615faa62968724aace4ebf223979397
SHA256d9099fad0399da7f63a384090d716f0c628bd7cf2ec82779f839a0f9768eb871
SHA5126b6b4ad256cbfda4b9f232f812710cf51bd4bac290481948b32140110f7aeb696dfdec7b9f68a4169d169a0f36d085cc8e53818b6bf8ccf7a16435d060921f66
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5ccc96a7ffd5f68ff5796af95f0b03f3a
SHA1b99dd273473aa97456744ac22a2c9f9f9560b4a1
SHA2567515c400ad3000c174d60e4557613f7f94bd27f28a330e4e6dd5bcf2bc4cf728
SHA5127167b9c19e9ce5f054076c9dbacc7c546fefeccfd5bc12e28dbe0d1b6067b9341f47f59253f469bb02511a06bd2d666d6877b840994898c17456a698887e4fae
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Filesize
4.1MB
MD5f447c4d7756fa554f3d830aa62fdd6e7
SHA1f07117ec1e991ddf0fe0cc00b4558b3ab9ec6297
SHA256b11e8b3fb9730767d6da7b99645c11e577afd21cc02fb17f1a53f60216c01bf8
SHA512512ebbe70c6bc7eb17f86f3b7f1c885959afe3dc2e720e3f69ac614db2180fe1d023ede260241f1342f12dbaa6ee3cb82de580e1d9966fd12e93356cba363f5e
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec