Analysis
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max time kernel
150s -
max time network
130s -
platform
windows11-21h2_x64 -
resource
win11-20240412-en -
resource tags
arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system -
submitted
20-04-2024 15:28
Static task
static1
Behavioral task
behavioral1
Sample
55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe
Resource
win10v2004-20240412-en
General
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Target
55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe
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Size
4.2MB
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MD5
592a6093112ab3f3a2edb2ed4f602736
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SHA1
fe535c30b0c7112d905665405626936a538c8696
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SHA256
55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f
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SHA512
0b243941bda6b263df1ff76dcbeefda984bc1603c4ce206073bc6e710946b7fc3110d6469ebc878befbabbb66a0f30da8a2ef8563fa66827fb99d17557ef1130
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SSDEEP
49152:JKOdvREmi8iTwPpeYBnAu4QJI7RESGN2UNQnUyHdr+bW0USBgrsqhT/DWSjgq2SQ:AOLEfT6eYBhfhWV+b2vbWNq2SbuhRR
Malware Config
Signatures
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Glupteba payload 20 IoCs
Processes:
resource yara_rule behavioral2/memory/4784-2-0x0000000004200000-0x0000000004AEB000-memory.dmp family_glupteba behavioral2/memory/4784-3-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba behavioral2/memory/3900-52-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba behavioral2/memory/3900-54-0x0000000003FA0000-0x000000000488B000-memory.dmp family_glupteba behavioral2/memory/4784-78-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba behavioral2/memory/3900-137-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba behavioral2/memory/3900-145-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba behavioral2/memory/4620-238-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba behavioral2/memory/4620-240-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba behavioral2/memory/4620-250-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba behavioral2/memory/4620-253-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba behavioral2/memory/4620-256-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba behavioral2/memory/4620-259-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba behavioral2/memory/4620-262-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba behavioral2/memory/4620-265-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba behavioral2/memory/4620-268-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba behavioral2/memory/4620-271-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba behavioral2/memory/4620-274-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba behavioral2/memory/4620-277-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba behavioral2/memory/4620-280-0x0000000000400000-0x0000000001DF9000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid process 4356 netsh.exe -
Executes dropped EXE 4 IoCs
Processes:
csrss.exeinjector.exewindefender.exewindefender.exepid process 4620 csrss.exe 4844 injector.exe 4920 windefender.exe 4488 windefender.exe -
Processes:
resource yara_rule C:\Windows\windefender.exe upx behavioral2/memory/4920-248-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/4488-252-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/4488-257-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3263309122-2820180308-3568046652-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Set value (str) \REGISTRY\USER\S-1-5-21-3263309122-2820180308-3568046652-1000\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 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 -
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:
55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe -
Drops file in Windows directory 4 IoCs
Processes:
csrss.exe55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exedescription ioc process File opened for modification C:\Windows\windefender.exe csrss.exe File opened for modification C:\Windows\rss 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe File created C:\Windows\rss\csrss.exe 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe File created 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 1776 sc.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 792 schtasks.exe 1864 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exepowershell.exepowershell.exepowershell.exewindefender.exepowershell.exepowershell.exepowershell.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2941 = "Sao Tome Daylight Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-91 = "Pacific SA Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-334 = "Jordan Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs 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\26\52C64B7E\@tzres.dll,-402 = "Arabic Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-332 = "E. Europe Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-491 = "India Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-215 = "Pacific Standard Time (Mexico)" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-441 = "Arabian Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-42 = "E. South America Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2891 = "Sudan Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-441 = "Arabian Daylight Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2491 = "Aus Central W. Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-252 = "Dateline Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-51 = "Greenland Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1042 = "Ulaanbaatar Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-651 = "AUS Central Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-41 = "E. South America Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-621 = "Korea Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1911 = "Russia TZ 10 Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1411 = "Syria Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.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\26\52C64B7E\@tzres.dll,-1801 = "Line Islands Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1892 = "Russia TZ 3 Standard Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2872 = "Magallanes Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-332 = "E. Europe Standard Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1801 = "Line Islands Daylight Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.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\26\52C64B7E\@tzres.dll,-364 = "Middle East Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1862 = "Russia TZ 6 Standard Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2161 = "Altai Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1472 = "Magadan Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-272 = "Greenwich Standard Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates powershell.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\26\52C64B7E\@tzres.dll,-662 = "Cen. Australia Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-448 = "Azerbaijan Daylight Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time" 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA powershell.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exe55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exepowershell.exe55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid process 4908 powershell.exe 4908 powershell.exe 4784 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe 4784 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe 1456 powershell.exe 1456 powershell.exe 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe 3300 powershell.exe 3300 powershell.exe 4648 powershell.exe 4648 powershell.exe 4868 powershell.exe 4868 powershell.exe 2420 powershell.exe 2420 powershell.exe 388 powershell.exe 388 powershell.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4620 csrss.exe 4620 csrss.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4620 csrss.exe 4620 csrss.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4620 csrss.exe 4620 csrss.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe 4844 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
powershell.exe55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exesc.exedescription pid process Token: SeDebugPrivilege 4908 powershell.exe Token: SeDebugPrivilege 4784 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Token: SeImpersonatePrivilege 4784 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe Token: SeDebugPrivilege 1456 powershell.exe Token: SeDebugPrivilege 3300 powershell.exe Token: SeDebugPrivilege 4648 powershell.exe Token: SeDebugPrivilege 4868 powershell.exe Token: SeDebugPrivilege 2420 powershell.exe Token: SeDebugPrivilege 388 powershell.exe Token: SeSystemEnvironmentPrivilege 4620 csrss.exe Token: SeSecurityPrivilege 1776 sc.exe Token: SeSecurityPrivilege 1776 sc.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.execmd.execsrss.exewindefender.execmd.exedescription pid process target process PID 4784 wrote to memory of 4908 4784 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe powershell.exe PID 4784 wrote to memory of 4908 4784 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe powershell.exe PID 4784 wrote to memory of 4908 4784 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe powershell.exe PID 3900 wrote to memory of 1456 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe powershell.exe PID 3900 wrote to memory of 1456 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe powershell.exe PID 3900 wrote to memory of 1456 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe powershell.exe PID 3900 wrote to memory of 4236 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe cmd.exe PID 3900 wrote to memory of 4236 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe cmd.exe PID 4236 wrote to memory of 4356 4236 cmd.exe netsh.exe PID 4236 wrote to memory of 4356 4236 cmd.exe netsh.exe PID 3900 wrote to memory of 3300 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe powershell.exe PID 3900 wrote to memory of 3300 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe powershell.exe PID 3900 wrote to memory of 3300 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe powershell.exe PID 3900 wrote to memory of 4648 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe powershell.exe PID 3900 wrote to memory of 4648 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe powershell.exe PID 3900 wrote to memory of 4648 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe powershell.exe PID 3900 wrote to memory of 4620 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe csrss.exe PID 3900 wrote to memory of 4620 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe csrss.exe PID 3900 wrote to memory of 4620 3900 55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe csrss.exe PID 4620 wrote to memory of 4868 4620 csrss.exe powershell.exe PID 4620 wrote to memory of 4868 4620 csrss.exe powershell.exe PID 4620 wrote to memory of 4868 4620 csrss.exe powershell.exe PID 4620 wrote to memory of 2420 4620 csrss.exe powershell.exe PID 4620 wrote to memory of 2420 4620 csrss.exe powershell.exe PID 4620 wrote to memory of 2420 4620 csrss.exe powershell.exe PID 4620 wrote to memory of 388 4620 csrss.exe powershell.exe PID 4620 wrote to memory of 388 4620 csrss.exe powershell.exe PID 4620 wrote to memory of 388 4620 csrss.exe powershell.exe PID 4620 wrote to memory of 4844 4620 csrss.exe injector.exe PID 4620 wrote to memory of 4844 4620 csrss.exe injector.exe PID 4920 wrote to memory of 4184 4920 windefender.exe cmd.exe PID 4920 wrote to memory of 4184 4920 windefender.exe cmd.exe PID 4920 wrote to memory of 4184 4920 windefender.exe cmd.exe PID 4184 wrote to memory of 1776 4184 cmd.exe sc.exe PID 4184 wrote to memory of 1776 4184 cmd.exe sc.exe PID 4184 wrote to memory of 1776 4184 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\55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe"C:\Users\Admin\AppData\Local\Temp\55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4784 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4908
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C:\Users\Admin\AppData\Local\Temp\55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.exe"C:\Users\Admin\AppData\Local\Temp\55c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f.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:3900 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1456
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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:4236 -
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:4356
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3300
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4648
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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:4620 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4868
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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:792
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:3976
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2420
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:388
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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:4844
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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:1864
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C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4920 -
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:4184 -
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:1776
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4488
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
MD5da982e14369d4543ae73808b8e7861cc
SHA1b88042a1ded6a615cf0f074e624023466919dd79
SHA2565a415b5aa5afd336d11426bc17a5d4ed337a7699e90133c97267a88936a0d10c
SHA51201113e8e17cb5d65bdb44ee40bbf7b41c30d79e81d9401e48874e5b85b3f0bcd8a716c9eadf4bd226545dff8c47ad100d481ebbb643b8b7dd503691eba5ab264
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5e8e5b18c8c4ba54832d5994a1e2ae14d
SHA15675606225bc78d5ae03f7c3046672c79de809a8
SHA256a43807601946fc5e89f9c2e00e3c8c2a92a77b1e907c06dceb1aff98ea31952d
SHA51249ff2db03952d1bce678316beb2443d1097f0d66d65482172d57b28ef28540febc2535cd1b73be356cfea9c24b801de6850ea07da702a385d511ddc3662086bd
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5de1e1ba8e08e3a1dc13880175463633c
SHA1d7098da86927cebe5710a38ad196b4086978acfe
SHA25633326ed1ea2e3c116d21d4f4d293eee8c612cdaf1d0f7c79b33c36983df0ebf2
SHA512ad9668694d2421b1d94ec932c3af5cf49dc3d9e98b15dd0adc7fc2210f1202efdf23a716678197bb688f439f6a466b07c2593a6fd3fb165154e7d082ee33e96f
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD566cb0e1bfd51a961764f5f85f8648fa4
SHA14eaaa28c7871d382830b977bb3fd5b8f4ab67aef
SHA25611ad03f7b25152c3c7a5eba2019f86acbe3247870a8eceabca20f19dc49da15b
SHA51284042fbd6437899a98b4f7294012c012464586a3e233f5af3a5a824c58a56bbd29633c602104d634ac010280a4eae7c69cc6d5c76084fd91378e05e2203c3110
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD59d60fc5ac8821bc53da4995f76d5c947
SHA182138d06eae5ee66f6f3846bc88516b7efb3e82b
SHA2568e8d57819d8eb3b3ae25f67bbd47c6781c44b4ccdd147a97c9604bb5e7e98502
SHA512f29109a083dcc3402ab9e2f751b1d0192b5b1f1b1cc4c35840144b14332b14e8e672252889b48caf2d23aeff13d3e41ec5bf533bef811a3c759b4c2ba5b6e4f3
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Filesize
4.2MB
MD5592a6093112ab3f3a2edb2ed4f602736
SHA1fe535c30b0c7112d905665405626936a538c8696
SHA25655c9bba4af3e4c940da5d5d62c5eddfa79270490d53b539508d919a41b48548f
SHA5120b243941bda6b263df1ff76dcbeefda984bc1603c4ce206073bc6e710946b7fc3110d6469ebc878befbabbb66a0f30da8a2ef8563fa66827fb99d17557ef1130
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec