Analysis
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max time kernel
149s -
max time network
150s -
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 14:05
Static task
static1
Behavioral task
behavioral1
Sample
4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe
Resource
win10v2004-20240508-en
General
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Target
4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe
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Size
4.1MB
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MD5
d4a08929a094c342b3ecbf39320d8475
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SHA1
62bce2778fbb81fe72ab825997770170447567db
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SHA256
4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a
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SHA512
a1f39943cd15412c5dfa372b6bcecaaba7a42e4a6919a2cec922d663e60381f10ae6bb412294186869e183d585a915f5edd134321658ccdc9759b01503e7bfbb
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SSDEEP
98304:IuOdAWE/bfbxbxBimum48oJjLrUZhWcgWy75MTps2CObMUZCzBSj:IuOpIddBi3V8Ojm7gWylM939CW
Malware Config
Signatures
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Glupteba payload 19 IoCs
Processes:
resource yara_rule behavioral2/memory/4432-2-0x00000000048B0000-0x000000000519B000-memory.dmp family_glupteba behavioral2/memory/4432-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4432-106-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4432-135-0x00000000048B0000-0x000000000519B000-memory.dmp family_glupteba behavioral2/memory/2788-134-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4432-170-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4732-201-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4732-212-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4732-215-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4732-219-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4732-222-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4732-228-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4732-232-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4732-235-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4732-238-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4732-242-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4732-248-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4732-251-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba behavioral2/memory/4732-254-0x0000000000400000-0x000000000273B000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid Process 3024 netsh.exe -
Executes dropped EXE 4 IoCs
Processes:
csrss.exeinjector.exewindefender.exewindefender.exepid Process 4732 csrss.exe 4468 injector.exe 2264 windefender.exe 3556 windefender.exe -
Processes:
resource yara_rule behavioral2/files/0x000200000002aa20-205.dat upx behavioral2/memory/2264-206-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/2264-210-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3556-216-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3556-223-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3556-236-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.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\"" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.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 created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe -
Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.
Processes:
4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exedescription ioc Process File opened (read-only) \??\VBoxMiniRdrDN 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe -
Drops file in Windows directory 4 IoCs
Processes:
4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.execsrss.exedescription ioc Process File opened for modification C:\Windows\rss 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe File created C:\Windows\rss\csrss.exe 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.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 4560 sc.exe -
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid Process 2540 powershell.exe 1492 powershell.exe 1120 powershell.exe 3512 powershell.exe 1524 powershell.exe 1232 powershell.exe 3884 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 2708 schtasks.exe 4584 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exepowershell.exepowershell.exepowershell.exewindefender.exepowershell.exepowershell.exepowershell.exedescription ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-671 = "AUS Eastern Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-452 = "Caucasus Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-71 = "Newfoundland Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2942 = "Sao Tome Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2842 = "Saratov Standard Time" windefender.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,-451 = "Caucasus Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-335 = "Jordan 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 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-872 = "Pakistan Standard 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,-791 = "SA Western Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1892 = "Russia TZ 3 Standard Time" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-632 = "Tokyo Standard Time" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.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\@tzres.dll,-1892 = "Russia TZ 3 Standard Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.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\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-272 = "Greenwich Standard Time" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1722 = "Libya Standard Time" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.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\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1862 = "Russia TZ 6 Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-752 = "Tonga Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2751 = "Tomsk Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-932 = "Coordinated Universal Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.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\CA powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1822 = "Russia TZ 1 Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1891 = "Russia TZ 3 Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\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\@tzres.dll,-742 = "New Zealand Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2531 = "Chatham Islands Daylight Time" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time" 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs powershell.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exe4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exepowershell.exe4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid Process 2540 powershell.exe 2540 powershell.exe 4432 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 4432 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 1492 powershell.exe 1492 powershell.exe 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 1120 powershell.exe 1120 powershell.exe 3512 powershell.exe 3512 powershell.exe 1524 powershell.exe 1524 powershell.exe 1232 powershell.exe 1232 powershell.exe 3884 powershell.exe 3884 powershell.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4732 csrss.exe 4732 csrss.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4732 csrss.exe 4732 csrss.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4732 csrss.exe 4732 csrss.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe 4468 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
powershell.exe4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exesc.exedescription pid Process Token: SeDebugPrivilege 2540 powershell.exe Token: SeDebugPrivilege 4432 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe Token: SeImpersonatePrivilege 4432 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe Token: SeDebugPrivilege 1492 powershell.exe Token: SeDebugPrivilege 1120 powershell.exe Token: SeDebugPrivilege 3512 powershell.exe Token: SeDebugPrivilege 1524 powershell.exe Token: SeDebugPrivilege 1232 powershell.exe Token: SeDebugPrivilege 3884 powershell.exe Token: SeSystemEnvironmentPrivilege 4732 csrss.exe Token: SeSecurityPrivilege 4560 sc.exe Token: SeSecurityPrivilege 4560 sc.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.execmd.execsrss.exewindefender.execmd.exedescription pid Process procid_target PID 4432 wrote to memory of 2540 4432 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 82 PID 4432 wrote to memory of 2540 4432 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 82 PID 4432 wrote to memory of 2540 4432 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 82 PID 2788 wrote to memory of 1492 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 87 PID 2788 wrote to memory of 1492 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 87 PID 2788 wrote to memory of 1492 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 87 PID 2788 wrote to memory of 4992 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 89 PID 2788 wrote to memory of 4992 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 89 PID 4992 wrote to memory of 3024 4992 cmd.exe 91 PID 4992 wrote to memory of 3024 4992 cmd.exe 91 PID 2788 wrote to memory of 1120 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 92 PID 2788 wrote to memory of 1120 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 92 PID 2788 wrote to memory of 1120 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 92 PID 2788 wrote to memory of 3512 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 94 PID 2788 wrote to memory of 3512 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 94 PID 2788 wrote to memory of 3512 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 94 PID 2788 wrote to memory of 4732 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 96 PID 2788 wrote to memory of 4732 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 96 PID 2788 wrote to memory of 4732 2788 4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe 96 PID 4732 wrote to memory of 1524 4732 csrss.exe 97 PID 4732 wrote to memory of 1524 4732 csrss.exe 97 PID 4732 wrote to memory of 1524 4732 csrss.exe 97 PID 4732 wrote to memory of 1232 4732 csrss.exe 102 PID 4732 wrote to memory of 1232 4732 csrss.exe 102 PID 4732 wrote to memory of 1232 4732 csrss.exe 102 PID 4732 wrote to memory of 3884 4732 csrss.exe 105 PID 4732 wrote to memory of 3884 4732 csrss.exe 105 PID 4732 wrote to memory of 3884 4732 csrss.exe 105 PID 4732 wrote to memory of 4468 4732 csrss.exe 107 PID 4732 wrote to memory of 4468 4732 csrss.exe 107 PID 2264 wrote to memory of 2448 2264 windefender.exe 113 PID 2264 wrote to memory of 2448 2264 windefender.exe 113 PID 2264 wrote to memory of 2448 2264 windefender.exe 113 PID 2448 wrote to memory of 4560 2448 cmd.exe 114 PID 2448 wrote to memory of 4560 2448 cmd.exe 114 PID 2448 wrote to memory of 4560 2448 cmd.exe 114 -
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\4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe"C:\Users\Admin\AppData\Local\Temp\4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4432 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2540
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C:\Users\Admin\AppData\Local\Temp\4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.exe"C:\Users\Admin\AppData\Local\Temp\4aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a.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:2788 -
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:1492
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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:4992 -
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:3024
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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:1120
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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:3512
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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:4732 -
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:1524
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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:2708
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:2108
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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:1232
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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:3884
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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:4468
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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:4584
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C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2264 -
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:2448 -
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:4560
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3556
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
MD5ac4917a885cf6050b1a483e4bc4d2ea5
SHA1b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f
SHA256e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9
SHA512092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5cecfadbce63e6bb38c4e800494fb066b
SHA199b4a7b343a3d837170cc2e3038fa9f52ba958e2
SHA256f97d029197bc01824d1eb37b82b5740bea9917a6bf5938af37994067ee124cfe
SHA51286ffb5c1eca23432c8893319b19e52e0ea1f4b0939f1d386036fd1b2e34e35fa97e8a17f2fa9159dc020127e5debdb4f2606f80a14d98cbb19f57d84688403ad
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD514e57c457cb054c89b646a8182521380
SHA13e7a77e6517354b468b3b5c103c241aa5aed4c80
SHA256193234fb1eb344cfbcb7d60e564d5cd43089317a9b6f8bdbaa6c99a99fcd540b
SHA5127707d4786533eb487b518af08de84386612ac9beef091615a3050d36d7aa777d68d79e3b04953644bd038a751aca04c7f6168606cb20a477cee028149981c742
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD52fc81ca859933a2ace4fc868517eaee0
SHA110c7b1ee620c21448bb93e97ee4397ed989a6e60
SHA2567f8e17dafaa6193cb8bb41377e5f9037229226d5a35684621da2135f6c1aa0a6
SHA512894e153cc2f122682b5ff64ea53ef972516ceac767b615116be9aa3002b92cf2764f30862ea456fb16460d4d6a575b4ed5721044d5b40580a5bc3145d8be6bad
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD52bf80a1a64220dda8faa6cfbf7f44c04
SHA13525af5ebba6b768da23d56f3d490eb034599f7a
SHA256165098803a7a8181c8c848827519ac7c31bdae4cffdc378135edfefd7326dd8c
SHA512f59f513238dfe0c8b33bc23ec02398cf6128f9abb3e39f70f83066f9164ae2a2799feb3a834d8be10cc99d0749348b8d5f532294ca95805889d5dbb87404f389
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5aa336f63927f663e7a97c17dde2ce55b
SHA137a60d221bc534e56f7071808768482be9467594
SHA256c1b745774ff4e97db5713129a96082a852c0b6e3e6a572dba1eb71eb588cf425
SHA512f0ea67f97bf56e679f70cb9d1f85ca099c38d395d8c1937339d25beb399ddfa8b37d752752f99d98bb072a125b3ed108a0c2539be8434bd2301551b30ede19ab
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Filesize
4.1MB
MD5d4a08929a094c342b3ecbf39320d8475
SHA162bce2778fbb81fe72ab825997770170447567db
SHA2564aa3cb23e42721af2127c709a5bca172151a63161b08992dbc3d98e873e24e1a
SHA512a1f39943cd15412c5dfa372b6bcecaaba7a42e4a6919a2cec922d663e60381f10ae6bb412294186869e183d585a915f5edd134321658ccdc9759b01503e7bfbb
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec