Analysis
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max time kernel
150s -
max time network
125s -
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 16:27
Static task
static1
Behavioral task
behavioral1
Sample
c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
Resource
win10v2004-20240426-en
General
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Target
c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe
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Size
4.1MB
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MD5
3f2d5b5b9aeadc636dbf6ea91c17c16f
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SHA1
c1cc44feff2001f206f488898546827c6f8727d6
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SHA256
c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601
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SHA512
da9b633b0bcc5154ae2a9f7423210bb80bff599d30ee29866c0924cb2cd591881c06d11c5c3b799468972f3b089387fc6ba2a19449647e22c1b69303784c1ddb
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SSDEEP
98304:5vHfbigA34ifkpJZQU0TgaIfW6UkFHwAhDtgwFW+12:5vHfb2IifudqhIuUHwAjW+M
Malware Config
Signatures
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Glupteba payload 20 IoCs
Processes:
resource yara_rule behavioral2/memory/3564-2-0x00000000049E0000-0x00000000052CB000-memory.dmp family_glupteba behavioral2/memory/3564-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3564-53-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3564-54-0x00000000049E0000-0x00000000052CB000-memory.dmp family_glupteba behavioral2/memory/3564-51-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/3404-121-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/3404-204-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/232-205-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/232-215-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/232-218-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/232-221-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/232-224-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/232-227-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/232-230-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/232-233-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/232-236-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/232-239-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/232-242-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/232-245-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/232-248-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid Process 1816 netsh.exe -
Executes dropped EXE 4 IoCs
Processes:
csrss.exeinjector.exewindefender.exewindefender.exepid Process 232 csrss.exe 2496 injector.exe 2164 windefender.exe 1964 windefender.exe -
Processes:
resource yara_rule behavioral2/files/0x000200000002aa36-208.dat upx behavioral2/memory/2164-210-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/2164-213-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/1964-217-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/1964-222-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.execsrss.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3433428765-2473475212-4279855560-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\S-1-5-21-3433428765-2473475212-4279855560-1000\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:
c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exedescription ioc Process File opened (read-only) \??\VBoxMiniRdrDN c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe -
Drops file in Windows directory 4 IoCs
Processes:
c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.execsrss.exedescription ioc Process File opened for modification C:\Windows\rss c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe File created C:\Windows\rss\csrss.exe c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.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 3004 sc.exe -
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid Process 1624 powershell.exe 4844 powershell.exe 4460 powershell.exe 3520 powershell.exe 4120 powershell.exe 2260 powershell.exe 3104 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 2948 schtasks.exe 4908 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exepowershell.exewindefender.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-751 = "Tonga Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-911 = "Mauritius Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-891 = "Morocco Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1931 = "Russia TZ 11 Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-82 = "Atlantic Standard Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-752 = "Tonga Standard Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-172 = "Central Standard Time (Mexico)" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-3051 = "Qyzylorda Daylight Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2371 = "Easter Island Daylight Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2511 = "Lord Howe Daylight Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1912 = "Russia TZ 10 Standard Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-932 = "Coordinated Universal Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-492 = "India Standard Time" windefender.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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-732 = "Fiji Standard Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1931 = "Russia TZ 11 Daylight Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-401 = "Arabic Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-81 = "Atlantic Daylight Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-332 = "E. Europe Standard Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-251 = "Dateline Daylight Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs 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,-511 = "Central Asia Daylight 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\Disallowed\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-632 = "Tokyo Standard Time" c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2491 = "Aus Central W. Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-42 = "E. South America Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-502 = "Nepal Standard Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs powershell.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exec21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exepowershell.exec21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid Process 1624 powershell.exe 1624 powershell.exe 3564 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 3564 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 4844 powershell.exe 4844 powershell.exe 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 4460 powershell.exe 4460 powershell.exe 3520 powershell.exe 3520 powershell.exe 4120 powershell.exe 4120 powershell.exe 2260 powershell.exe 2260 powershell.exe 3104 powershell.exe 3104 powershell.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 232 csrss.exe 232 csrss.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 232 csrss.exe 232 csrss.exe 2496 injector.exe 2496 injector.exe 232 csrss.exe 232 csrss.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe 2496 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
powershell.exec21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exesc.exedescription pid Process Token: SeDebugPrivilege 1624 powershell.exe Token: SeDebugPrivilege 3564 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Token: SeImpersonatePrivilege 3564 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe Token: SeDebugPrivilege 4844 powershell.exe Token: SeDebugPrivilege 4460 powershell.exe Token: SeDebugPrivilege 3520 powershell.exe Token: SeDebugPrivilege 4120 powershell.exe Token: SeDebugPrivilege 2260 powershell.exe Token: SeDebugPrivilege 3104 powershell.exe Token: SeSystemEnvironmentPrivilege 232 csrss.exe Token: SeSecurityPrivilege 3004 sc.exe Token: SeSecurityPrivilege 3004 sc.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exec21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.execmd.execsrss.exewindefender.execmd.exedescription pid Process procid_target PID 3564 wrote to memory of 1624 3564 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 82 PID 3564 wrote to memory of 1624 3564 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 82 PID 3564 wrote to memory of 1624 3564 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 82 PID 3404 wrote to memory of 4844 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 87 PID 3404 wrote to memory of 4844 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 87 PID 3404 wrote to memory of 4844 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 87 PID 3404 wrote to memory of 2980 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 89 PID 3404 wrote to memory of 2980 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 89 PID 2980 wrote to memory of 1816 2980 cmd.exe 91 PID 2980 wrote to memory of 1816 2980 cmd.exe 91 PID 3404 wrote to memory of 4460 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 92 PID 3404 wrote to memory of 4460 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 92 PID 3404 wrote to memory of 4460 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 92 PID 3404 wrote to memory of 3520 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 94 PID 3404 wrote to memory of 3520 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 94 PID 3404 wrote to memory of 3520 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 94 PID 3404 wrote to memory of 232 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 96 PID 3404 wrote to memory of 232 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 96 PID 3404 wrote to memory of 232 3404 c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe 96 PID 232 wrote to memory of 4120 232 csrss.exe 97 PID 232 wrote to memory of 4120 232 csrss.exe 97 PID 232 wrote to memory of 4120 232 csrss.exe 97 PID 232 wrote to memory of 2260 232 csrss.exe 103 PID 232 wrote to memory of 2260 232 csrss.exe 103 PID 232 wrote to memory of 2260 232 csrss.exe 103 PID 232 wrote to memory of 3104 232 csrss.exe 105 PID 232 wrote to memory of 3104 232 csrss.exe 105 PID 232 wrote to memory of 3104 232 csrss.exe 105 PID 232 wrote to memory of 2496 232 csrss.exe 107 PID 232 wrote to memory of 2496 232 csrss.exe 107 PID 2164 wrote to memory of 868 2164 windefender.exe 113 PID 2164 wrote to memory of 868 2164 windefender.exe 113 PID 2164 wrote to memory of 868 2164 windefender.exe 113 PID 868 wrote to memory of 3004 868 cmd.exe 114 PID 868 wrote to memory of 3004 868 cmd.exe 114 PID 868 wrote to memory of 3004 868 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\c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe"C:\Users\Admin\AppData\Local\Temp\c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3564 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1624
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C:\Users\Admin\AppData\Local\Temp\c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.exe"C:\Users\Admin\AppData\Local\Temp\c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601.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:3404 -
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:4844
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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:2980 -
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:1816
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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:4460
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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:3520
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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:232 -
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:4120
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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:2948
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:1872
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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:2260
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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:3104
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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:2496
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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:4908
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C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2164 -
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:868 -
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:3004
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1964
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
MD5c5c3c546a0659126ebbc5307e3e31ff8
SHA1bdbcc5e5e6d152a7d6aa087bcf11872c4c7587ad
SHA25688ec28401e15f025bab2fe7a5e67bec1d0aee7d3bf775458f634e3b0630f30e9
SHA512545dc70e24fd2e14b02edd84014b0a3cfa00cf4155750421199e49849756511cfac227a62fc27714d4dcbe83b29510c99f0b53c6af51648b5768d69b1191943d
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD52863d30bc1b060a084c7d56d8fb33933
SHA1ee29edb6376cbcecde77dd70fb3f56447d9cee6f
SHA256b2630c191c5cbd0d25b6fa47c801ff702bc0c4d75c1a7b9e6ab420eaf6b0787c
SHA512254c4b2b5690994730b46bcd4ae6774aacf6961b76cc842893f05e757b95e15bd115a1e399547b6109d5dbbb2cb273d39c949e100f0aca7307564d6bfbed076f
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5b880b45f810e88fe76fef96cd8aac845
SHA1c820319015e6cf7dd821dee6a07e68a34cb495de
SHA25689fdbe695a127b63a559543f41be58fb291eba6ba17baa7269214012a6fd401a
SHA512999737825872771d39140eee6fc9fc3d49a0c8e1a3bff0804732ee3ba1b3344102d8f7f526ba3f504c6dbd7d8eb625ff8913b06c01162aec08dd3220117c7289
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5d935783b9ca67d6645dfe2756daa9833
SHA1852d1c02e8eb46f9db7cfd1d7fda48e214be9303
SHA25632325ace886295d976140542d838946dcb3ec4aefdc18638e1286bdde40558ef
SHA5127225bc24216a928377d0288fdafb6ec598eef6a5c8f4cf897a08c931f4410b158ff591ff5d180bd8ed8af2478671f3b5ff1a8eac5815678cf85931bead7b0cec
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5949379832aa895e255509d3ff8c87f3f
SHA1ab508288e907d8a1cd0c8166b8463933cbe6e3e5
SHA25645595efa873c87c5f6e89c89d5d10d8a4bdf48e6076a2615c7749a6fa3a8cab5
SHA512d062ec735c1fbc112a066b8e49b579817799d2e94bdc19d1b9ac8f1a8eb47a9b88ff73ad81cf7c006b1adc73d90ed011041b3a9ad57b922d846c7f03ee08bb0c
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Filesize
4.1MB
MD53f2d5b5b9aeadc636dbf6ea91c17c16f
SHA1c1cc44feff2001f206f488898546827c6f8727d6
SHA256c21ef752a75a4589bd911b41e893846eb2589fb386606e7000472e714c83b601
SHA512da9b633b0bcc5154ae2a9f7423210bb80bff599d30ee29866c0924cb2cd591881c06d11c5c3b799468972f3b089387fc6ba2a19449647e22c1b69303784c1ddb
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec