Analysis
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max time kernel
150s -
max time network
146s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
16-05-2024 04:26
Static task
static1
Behavioral task
behavioral1
Sample
bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe
Resource
win10v2004-20240426-en
General
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Target
bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe
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Size
4.1MB
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MD5
393ae5f8768a1ee7c0be487ed7de4b91
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SHA1
f1ff2e591b450b20f62469767215527fdab4bce7
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SHA256
bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36
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SHA512
3c32ee01456b6d6ad8bc29f68113077d429aec93c37f6e1e99e80bd013358713535ed6d24bfc00084c12bb2dc4762be9cfda7fbf87dcf738a8543ada453faec1
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SSDEEP
98304:Z96GAmuNBigEkoqfZTwC6uGlBZNljS4jcC:ZI9hoq9wC6uGlB/xgC
Malware Config
Signatures
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Glupteba payload 17 IoCs
Processes:
resource yara_rule behavioral2/memory/3672-2-0x0000000002E90000-0x000000000377B000-memory.dmp family_glupteba behavioral2/memory/3672-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3672-75-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3672-77-0x0000000002E90000-0x000000000377B000-memory.dmp family_glupteba behavioral2/memory/956-124-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4624-200-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4624-211-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4624-213-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4624-218-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4624-221-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4624-223-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4624-225-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4624-230-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4624-233-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4624-234-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4624-237-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4624-242-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid Process 3312 netsh.exe -
Executes dropped EXE 4 IoCs
Processes:
csrss.exeinjector.exewindefender.exewindefender.exepid Process 4624 csrss.exe 4520 injector.exe 4888 windefender.exe 3132 windefender.exe -
Processes:
resource yara_rule behavioral2/files/0x000200000002aa06-204.dat upx behavioral2/memory/4888-205-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3132-208-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/4888-210-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3132-214-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3132-219-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.execsrss.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3107365284-1576850094-161165143-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Set value (str) \REGISTRY\USER\S-1-5-21-3107365284-1576850094-161165143-1000\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:
bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exedescription ioc Process File opened (read-only) \??\VBoxMiniRdrDN bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe -
Drops file in Windows directory 4 IoCs
Processes:
bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.execsrss.exedescription ioc Process File opened for modification C:\Windows\rss bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe File created C:\Windows\rss\csrss.exe bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.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 1140 sc.exe -
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid Process 4372 powershell.exe 3544 powershell.exe 1824 powershell.exe 4768 powershell.exe 2432 powershell.exe 4864 powershell.exe 416 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 4860 schtasks.exe 2112 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
windefender.exebcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-631 = "Tokyo Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-32 = "Mid-Atlantic Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1871 = "Russia TZ 7 Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-722 = "Central Pacific Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1911 = "Russia TZ 10 Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1832 = "Russia TZ 2 Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-601 = "Taipei Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates 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\@tzres.dll,-1872 = "Russia TZ 7 Standard Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs 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\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.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" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-202 = "US Mountain Standard Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2182 = "Astrakhan Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-981 = "Kamchatka Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-51 = "Greenland Daylight Time" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2871 = "Magallanes Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2591 = "Tocantins Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1842 = "Russia TZ 4 Standard Time" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-242 = "Samoa Standard Time" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-982 = "Kamchatka Standard Time" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.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\@tzres.dll,-384 = "Namibia Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs 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,-721 = "Central Pacific Daylight Time" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1722 = "Libya Standard Time" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1932 = "Russia TZ 11 Standard Time" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 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\@tzres.dll,-2181 = "Astrakhan 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,-892 = "Morocco Standard 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" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-162 = "Central Standard Time" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time" bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exebcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exepowershell.exebcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid Process 4768 powershell.exe 4768 powershell.exe 3672 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 3672 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 2432 powershell.exe 2432 powershell.exe 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 4864 powershell.exe 4864 powershell.exe 416 powershell.exe 416 powershell.exe 4372 powershell.exe 4372 powershell.exe 3544 powershell.exe 3544 powershell.exe 1824 powershell.exe 1824 powershell.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4624 csrss.exe 4624 csrss.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4624 csrss.exe 4624 csrss.exe 4520 injector.exe 4520 injector.exe 4624 csrss.exe 4624 csrss.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe 4520 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
powershell.exebcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exesc.exedescription pid Process Token: SeDebugPrivilege 4768 powershell.exe Token: SeDebugPrivilege 3672 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Token: SeImpersonatePrivilege 3672 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe Token: SeDebugPrivilege 2432 powershell.exe Token: SeDebugPrivilege 4864 powershell.exe Token: SeDebugPrivilege 416 powershell.exe Token: SeDebugPrivilege 4372 powershell.exe Token: SeDebugPrivilege 3544 powershell.exe Token: SeDebugPrivilege 1824 powershell.exe Token: SeSystemEnvironmentPrivilege 4624 csrss.exe Token: SeSecurityPrivilege 1140 sc.exe Token: SeSecurityPrivilege 1140 sc.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exebcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.execmd.execsrss.exewindefender.execmd.exedescription pid Process procid_target PID 3672 wrote to memory of 4768 3672 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 83 PID 3672 wrote to memory of 4768 3672 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 83 PID 3672 wrote to memory of 4768 3672 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 83 PID 956 wrote to memory of 2432 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 88 PID 956 wrote to memory of 2432 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 88 PID 956 wrote to memory of 2432 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 88 PID 956 wrote to memory of 3400 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 90 PID 956 wrote to memory of 3400 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 90 PID 3400 wrote to memory of 3312 3400 cmd.exe 92 PID 3400 wrote to memory of 3312 3400 cmd.exe 92 PID 956 wrote to memory of 4864 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 93 PID 956 wrote to memory of 4864 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 93 PID 956 wrote to memory of 4864 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 93 PID 956 wrote to memory of 416 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 95 PID 956 wrote to memory of 416 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 95 PID 956 wrote to memory of 416 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 95 PID 956 wrote to memory of 4624 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 97 PID 956 wrote to memory of 4624 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 97 PID 956 wrote to memory of 4624 956 bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe 97 PID 4624 wrote to memory of 4372 4624 csrss.exe 98 PID 4624 wrote to memory of 4372 4624 csrss.exe 98 PID 4624 wrote to memory of 4372 4624 csrss.exe 98 PID 4624 wrote to memory of 3544 4624 csrss.exe 103 PID 4624 wrote to memory of 3544 4624 csrss.exe 103 PID 4624 wrote to memory of 3544 4624 csrss.exe 103 PID 4624 wrote to memory of 1824 4624 csrss.exe 106 PID 4624 wrote to memory of 1824 4624 csrss.exe 106 PID 4624 wrote to memory of 1824 4624 csrss.exe 106 PID 4624 wrote to memory of 4520 4624 csrss.exe 108 PID 4624 wrote to memory of 4520 4624 csrss.exe 108 PID 4888 wrote to memory of 3556 4888 windefender.exe 114 PID 4888 wrote to memory of 3556 4888 windefender.exe 114 PID 4888 wrote to memory of 3556 4888 windefender.exe 114 PID 3556 wrote to memory of 1140 3556 cmd.exe 115 PID 3556 wrote to memory of 1140 3556 cmd.exe 115 PID 3556 wrote to memory of 1140 3556 cmd.exe 115 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe"C:\Users\Admin\AppData\Local\Temp\bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3672 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4768
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C:\Users\Admin\AppData\Local\Temp\bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.exe"C:\Users\Admin\AppData\Local\Temp\bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36.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:956 -
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:2432
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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:3400 -
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:3312
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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:4864
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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:416
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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:4624 -
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:4372
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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:4860
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:4484
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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:3544
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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:1824
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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:4520
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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:2112
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C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4888 -
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:3556 -
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:1140
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3132
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
MD517d344c7719a622bbbab0d970442404d
SHA12518deeaa9c77e7f5dc886a4e1030ff1efccb1ab
SHA256343788e4b0b96d863fde346631942bf225114db2e85d7710e347b6f2ddb0682b
SHA512be46bfbd2b2b240b02908f095aee8ae0e0ce58cd92090d6974e0d0c58ae41266245411c46696cecfe714ef4200e40e53ee9f8b1bab1413a6da181ec258d252c5
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD51f5db7c65ba57f1559f49788c62f5133
SHA1e3b30ff65bbef524387e2cb67b1657d9cfecfc26
SHA2562bc305af2adbc384f12a4e1d879c5a894d309a91ef7626a0aa2da6844684075f
SHA51238619579db7ff04c904bafde459dbeff6c252b7cc3614e531adb3509c5a4bb110a13cec1d86a0fea97a7ea4ba983c4a4d61420ee5335b970cc6ca9028d1b54cb
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD54b12ce57c041076dfe5049c01ac99f8b
SHA140ed2ffa8910dd913f0256b4f40e7d83895f907d
SHA256c5755e64350a95dfc1efd1ade00380d03bd00acd3f0ad2fa337599119e0a63e9
SHA5128461cfe69168700b53f9ed0f84addc1ff2ef734d7a11beb2ddd8b8171ebfa2a669c4f7a32f4c4456903f7c49e35f37a0c88ea71299b8ff4800fd5198d12e4abe
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD541219de1f9d9a0039e9412fde8d91550
SHA12fb4821413fbd02481db1ea5a3b496778d6e5573
SHA25687fae8f90b78cf14e9a4595f5aca0520ffafa4167a87911f98f8026ffa705a76
SHA51228650d3997799299e82e468c6af5fb1895bffaf4bffde500746a84694475f065e73f67f7fadb15cbcbf5a2887c791cc373d54671d6f4be03640504df8ef6d77d
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD549c044166546ea1ccd6f61800c440fbe
SHA1cfa3a8669e41e64e968012cfef6f37298585fd36
SHA25685c205dd4a82cabc7e51411825e07a08d4d6d795404d6a98939a6362cb39d00d
SHA512dbc5e1a45d2400355b475a41db582179b91acb0088d2f847a7bfee10bdd6e755f23e1a619cbd8d99317f09f16e8771cd810e2ac04d2e7d600cd1529793d2e95e
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Filesize
4.1MB
MD5393ae5f8768a1ee7c0be487ed7de4b91
SHA1f1ff2e591b450b20f62469767215527fdab4bce7
SHA256bcb9e13132021147e43c99bca20197ce0632459fa45b2e1d144dcb6880e69d36
SHA5123c32ee01456b6d6ad8bc29f68113077d429aec93c37f6e1e99e80bd013358713535ed6d24bfc00084c12bb2dc4762be9cfda7fbf87dcf738a8543ada453faec1
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec