Analysis
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max time kernel
149s -
max time network
149s -
platform
windows11-21h2_x64 -
resource
win11-20240419-en -
resource tags
arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system -
submitted
20-05-2024 04:08
Static task
static1
Behavioral task
behavioral1
Sample
f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe
Resource
win10v2004-20240426-en
General
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Target
f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe
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Size
4.1MB
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MD5
0d3aa797b406b8b6e3b95353e7a51d62
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SHA1
7eb0c373c6811eaf98c51d9b66bcfdd84d11a248
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SHA256
f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01
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SHA512
5ecbc4a308c15742cdfa41203e10a713a4afbf774e065a6898b630a5525da7e66086a45155822da492500d25e452b1f401995af7ca3d801005e93927943885a1
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SSDEEP
98304:uQAQcsa3GhfWYEvpb4LdECaqY+VYhFzXw/u5g9cAd9nQ:uQAQcDPYxuCJe7X5ghfQ
Malware Config
Signatures
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Glupteba payload 19 IoCs
Processes:
resource yara_rule behavioral2/memory/2816-2-0x00000000049F0000-0x00000000052DB000-memory.dmp family_glupteba behavioral2/memory/2816-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2816-53-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/2816-54-0x00000000049F0000-0x00000000052DB000-memory.dmp family_glupteba behavioral2/memory/2816-51-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1640-126-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1776-203-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1776-212-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1776-213-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1776-216-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1776-218-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1776-220-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1776-221-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1776-224-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1776-226-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1776-228-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1776-229-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1776-232-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba behavioral2/memory/1776-234-0x0000000000400000-0x0000000002733000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid process 5024 netsh.exe -
Executes dropped EXE 4 IoCs
Processes:
csrss.exeinjector.exewindefender.exewindefender.exepid process 1776 csrss.exe 1464 injector.exe 2376 windefender.exe 3580 windefender.exe -
Processes:
resource yara_rule C:\Windows\windefender.exe upx behavioral2/memory/2376-207-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/2376-211-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3580-214-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3580-217-0x0000000000400000-0x00000000008DF000-memory.dmp upx behavioral2/memory/3580-223-0x0000000000400000-0x00000000008DF000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
csrss.exef61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" csrss.exe Set value (str) \REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Manipulates WinMonFS driver. 1 IoCs
Roottkits write to WinMonFS to hide directories/files from being detected.
Processes:
csrss.exedescription ioc process File opened for modification \??\WinMonFS csrss.exe -
Drops file in System32 directory 7 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File 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 -
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:
f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe -
Drops file in Windows directory 4 IoCs
Processes:
f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.execsrss.exedescription ioc process File opened for modification C:\Windows\rss f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe File created C:\Windows\rss\csrss.exe f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.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 2020 sc.exe -
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid process 2528 powershell.exe 2984 powershell.exe 2792 powershell.exe 1136 powershell.exe 4380 powershell.exe 4904 powershell.exe 1004 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 5104 schtasks.exe 4720 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
powershell.exef61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exepowershell.exewindefender.exepowershell.exepowershell.exepowershell.exedescription ioc process 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\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time" f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 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\2a\52C64B7E\@tzres.dll,-201 = "US Mountain Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time" f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1721 = "Libya Daylight Time" windefender.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\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time" f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.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" f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-52 = "Greenland Standard Time" windefender.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,-2792 = "Novosibirsk Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2141 = "Transbaikal Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-251 = "Dateline Daylight Time" f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time" f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time" f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs 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\2a\52C64B7E\@tzres.dll,-141 = "Canada Central Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-3142 = "South Sudan Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time" f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-601 = "Taipei Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time" f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-932 = "Coordinated Universal Time" f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-105 = "Central Brazilian Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2532 = "Chatham Islands Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time" f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-122 = "SA Pacific Standard Time" f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs powershell.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,-1971 = "Belarus Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2512 = "Lord Howe Standard 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\C:\Windows\system32\,@tzres.dll,-571 = "China Daylight Time" f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time" f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time" f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-1021 = "Bangladesh Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-2772 = "Omsk Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2392 = "Aleutian Standard Time" f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-841 = "Argentina Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-92 = "Pacific SA Standard Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-932 = "Coordinated Universal Time" windefender.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-434 = "Georgian Daylight Time" windefender.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@tzres.dll,-242 = "Samoa Standard Time" windefender.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exef61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exepowershell.exef61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid process 2792 powershell.exe 2792 powershell.exe 2816 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe 2816 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe 1136 powershell.exe 1136 powershell.exe 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe 4380 powershell.exe 4380 powershell.exe 4904 powershell.exe 4904 powershell.exe 1004 powershell.exe 1004 powershell.exe 2528 powershell.exe 2528 powershell.exe 2984 powershell.exe 2984 powershell.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1776 csrss.exe 1776 csrss.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1776 csrss.exe 1776 csrss.exe 1464 injector.exe 1464 injector.exe 1776 csrss.exe 1776 csrss.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe 1464 injector.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
powershell.exef61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exesc.exedescription pid process Token: SeDebugPrivilege 2792 powershell.exe Token: SeDebugPrivilege 2816 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe Token: SeImpersonatePrivilege 2816 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe Token: SeDebugPrivilege 1136 powershell.exe Token: SeDebugPrivilege 4380 powershell.exe Token: SeDebugPrivilege 4904 powershell.exe Token: SeDebugPrivilege 1004 powershell.exe Token: SeDebugPrivilege 2528 powershell.exe Token: SeDebugPrivilege 2984 powershell.exe Token: SeSystemEnvironmentPrivilege 1776 csrss.exe Token: SeSecurityPrivilege 2020 sc.exe Token: SeSecurityPrivilege 2020 sc.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exef61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.execmd.execsrss.exewindefender.execmd.exedescription pid process target process PID 2816 wrote to memory of 2792 2816 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe powershell.exe PID 2816 wrote to memory of 2792 2816 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe powershell.exe PID 2816 wrote to memory of 2792 2816 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe powershell.exe PID 1640 wrote to memory of 1136 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe powershell.exe PID 1640 wrote to memory of 1136 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe powershell.exe PID 1640 wrote to memory of 1136 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe powershell.exe PID 1640 wrote to memory of 3780 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe cmd.exe PID 1640 wrote to memory of 3780 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe cmd.exe PID 3780 wrote to memory of 5024 3780 cmd.exe netsh.exe PID 3780 wrote to memory of 5024 3780 cmd.exe netsh.exe PID 1640 wrote to memory of 4380 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe powershell.exe PID 1640 wrote to memory of 4380 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe powershell.exe PID 1640 wrote to memory of 4380 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe powershell.exe PID 1640 wrote to memory of 4904 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe powershell.exe PID 1640 wrote to memory of 4904 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe powershell.exe PID 1640 wrote to memory of 4904 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe powershell.exe PID 1640 wrote to memory of 1776 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe csrss.exe PID 1640 wrote to memory of 1776 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe csrss.exe PID 1640 wrote to memory of 1776 1640 f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe csrss.exe PID 1776 wrote to memory of 1004 1776 csrss.exe powershell.exe PID 1776 wrote to memory of 1004 1776 csrss.exe powershell.exe PID 1776 wrote to memory of 1004 1776 csrss.exe powershell.exe PID 1776 wrote to memory of 2528 1776 csrss.exe powershell.exe PID 1776 wrote to memory of 2528 1776 csrss.exe powershell.exe PID 1776 wrote to memory of 2528 1776 csrss.exe powershell.exe PID 1776 wrote to memory of 2984 1776 csrss.exe powershell.exe PID 1776 wrote to memory of 2984 1776 csrss.exe powershell.exe PID 1776 wrote to memory of 2984 1776 csrss.exe powershell.exe PID 1776 wrote to memory of 1464 1776 csrss.exe injector.exe PID 1776 wrote to memory of 1464 1776 csrss.exe injector.exe PID 2376 wrote to memory of 1312 2376 windefender.exe cmd.exe PID 2376 wrote to memory of 1312 2376 windefender.exe cmd.exe PID 2376 wrote to memory of 1312 2376 windefender.exe cmd.exe PID 1312 wrote to memory of 2020 1312 cmd.exe sc.exe PID 1312 wrote to memory of 2020 1312 cmd.exe sc.exe PID 1312 wrote to memory of 2020 1312 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\f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe"C:\Users\Admin\AppData\Local\Temp\f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2816 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2792 -
C:\Users\Admin\AppData\Local\Temp\f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.exe"C:\Users\Admin\AppData\Local\Temp\f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01.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:1640 -
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:1136 -
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:3780 -
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:5024 -
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:4380 -
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:4904 -
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:1776 -
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:1004 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:5104 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:1696
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2528 -
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:2984 -
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:1464 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:4720 -
C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2376 -
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:1312 -
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:2020
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3580
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
MD55c4a84b7ceff023747da3caf9aa8bdac
SHA1342ffb60e212c545d2a3d75247666a2594b90ddc
SHA2564f1668a95a3ad30820ac1930ebc95f787ba9f42a5c3e20f8517ef52154b7c811
SHA5122cc825f6dd2cf78a4633493cc43088724a51732ff0127e84bd31c23a1e7ff7ffe609facc3b14106dd4f720cfe123b7eca1733398af1c7c6934ac2eddef7f2b3f
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD546f307d3da745ef852c7630f9d20efa2
SHA116bb504d2b776acdf4324209af760dc0ccdbcc41
SHA25663d87b57b9a340f6f1e2a695cca9c2bfc1f2e54a9e49e88d77fad27285d254e9
SHA51286fdf5d96b24f927389703a84ffaeb3186fdb6f2c095c1dc93b9318b20919c4ccd744ebf07c467594ce5f6408b5cf585198ea5dfa726a49d7bdfe83ca1fbbfc2
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5cbb16ca69a0558835694320e57be4720
SHA14ca9923572cc6e922f198360575fe7b8c2c7eb22
SHA256ed6b96b6790dd8af7cfd8e4f0a04b4bcdef127b43c4538a0126b1129e362d11c
SHA5126dd9dfed7f3f4edadf43d6b2280f21acd26f096451f5d2c28de4a78ada9685140d78d55654716c64cfde312d0c933587cecfbc73c5e02b95b83e924a3c39ddc1
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD526798d66d5de59f3940bbbbfc256fb98
SHA17ed3a30c8102a59e8d20fe223da6d991e648ffc5
SHA256b8686647f84d5644acd7b8be7e4d4ba3b6d2979ba9b45d8861378da3669ff35c
SHA5125a705b906607f997b07047d986ee2ad0e662d3f98b9870013aff735ca5ab5c86c85f77d33033100c8e273dc13672043a4d47266c551529a9d8bc9275a20f6a04
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5434c3399812f91314849709d09f5a96c
SHA1529cf7f12ab3be7def5247f7f6892fd979bcc615
SHA256c9216b5c0ad061664f9f15173d31d22107fdcaa52839ba7b4b4914a3fd59deeb
SHA512dfdf382da0c155d00c132a1861bc8d6a02db744d902f532485fd48d64393ad49983ea41dfb01fa2f5f3908bd3be1d7ac96eee2c7ffec6cdc1fe6ed3908835653
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Filesize
4.1MB
MD50d3aa797b406b8b6e3b95353e7a51d62
SHA17eb0c373c6811eaf98c51d9b66bcfdd84d11a248
SHA256f61df880bccd5afdcead8308b6b70e87c3995f3aba7887c0fd988f7aedebaf01
SHA5125ecbc4a308c15742cdfa41203e10a713a4afbf774e065a6898b630a5525da7e66086a45155822da492500d25e452b1f401995af7ca3d801005e93927943885a1
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Filesize
2.0MB
MD58e67f58837092385dcf01e8a2b4f5783
SHA1012c49cfd8c5d06795a6f67ea2baf2a082cf8625
SHA256166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
SHA51240d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec