Analysis
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max time kernel
150s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
29-03-2023 10:11
Static task
static1
General
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Target
0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe
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Size
4.1MB
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MD5
d3ad3e4399e91fca86fe19c2a1b6bfbb
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SHA1
8959d518f7b685439b8a6d4ba8556f176a1063e2
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SHA256
0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a
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SHA512
83386faed8c4b442f769931c2dec42145c9a8a087b887ae44fb63db3c198be1a4e17ba59a8d1cca9584eba79ee0d4d2c5455d3e916725c6a9dc7eacfe3d249bd
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SSDEEP
98304:dgDaCFb6F3+G/r+eLPqz9ttPc9cWMNfHla/sghWgL3zq1LwM1f:8aCl6FOG/r/Q5fdHl0sg5zzq1sM5
Malware Config
Signatures
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Glupteba payload 17 IoCs
Processes:
resource yara_rule behavioral1/memory/3888-134-0x0000000002F80000-0x00000000037F7000-memory.dmp family_glupteba behavioral1/memory/3888-136-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/3880-140-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/2496-148-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/2496-149-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/2496-150-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/2496-151-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/2496-152-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/2496-153-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/2496-154-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/2496-155-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/2496-156-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/2496-157-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/2496-158-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/2496-159-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/2496-160-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/2496-167-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Executes dropped EXE 3 IoCs
Processes:
csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exepid process 2496 csrss.exe 3008 injector.exe 1384 f801950a962ddba14caaa44bf084b55c.exe -
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe upx C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe upx behavioral1/memory/1384-166-0x0000000000400000-0x0000000000C25000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\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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Legitimate hosting services abused for malware hosting/C2 1 TTPs
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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 -
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:
0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe -
Drops file in Windows directory 2 IoCs
Processes:
0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exedescription ioc process File opened for modification C:\Windows\rss 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe File created C:\Windows\rss\csrss.exe 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Modifies data under HKEY_USERS 64 IoCs
Processes:
0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1821 = "Russia TZ 1 Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-442 = "Arabian Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-371 = "Jerusalem Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2841 = "Saratov Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1831 = "Russia TZ 2 Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-242 = "Samoa Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3142 = "South Sudan Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2791 = "Novosibirsk Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1721 = "Libya Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3051 = "Qyzylorda Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1911 = "Russia TZ 10 Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1801 = "Line Islands Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-81 = "Atlantic Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-221 = "Alaskan Daylight Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1872 = "Russia TZ 7 Standard Time" 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exeinjector.execsrss.exepid process 3888 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe 3888 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe 3880 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe 3880 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe 3880 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe 3880 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe 3880 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe 3880 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe 3880 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe 3880 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe 3880 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe 3880 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 2496 csrss.exe 2496 csrss.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 2496 csrss.exe 2496 csrss.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe 3008 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.execsrss.exedescription pid process Token: SeDebugPrivilege 3888 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Token: SeImpersonatePrivilege 3888 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe Token: SeSystemEnvironmentPrivilege 2496 csrss.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.execmd.execsrss.exedescription pid process target process PID 3880 wrote to memory of 1076 3880 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe cmd.exe PID 3880 wrote to memory of 1076 3880 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe cmd.exe PID 1076 wrote to memory of 1640 1076 cmd.exe netsh.exe PID 1076 wrote to memory of 1640 1076 cmd.exe netsh.exe PID 3880 wrote to memory of 2496 3880 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe csrss.exe PID 3880 wrote to memory of 2496 3880 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe csrss.exe PID 3880 wrote to memory of 2496 3880 0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe csrss.exe PID 2496 wrote to memory of 3008 2496 csrss.exe injector.exe PID 2496 wrote to memory of 3008 2496 csrss.exe injector.exe PID 2496 wrote to memory of 1384 2496 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 2496 wrote to memory of 1384 2496 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 2496 wrote to memory of 1384 2496 csrss.exe f801950a962ddba14caaa44bf084b55c.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\0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe"C:\Users\Admin\AppData\Local\Temp\0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.exe"C:\Users\Admin\AppData\Local\Temp\0c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a.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
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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
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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
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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.
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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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)
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵
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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
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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)
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C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exeC:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe4⤵
- Executes dropped EXE
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn "csrss" /f5⤵
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn "ScheduledUpdate" /f5⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exeFilesize
3.2MB
MD5f801950a962ddba14caaa44bf084b55c
SHA17cadc9076121297428442785536ba0df2d4ae996
SHA256c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f
SHA5124183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5
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C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exeFilesize
3.2MB
MD5f801950a962ddba14caaa44bf084b55c
SHA17cadc9076121297428442785536ba0df2d4ae996
SHA256c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f
SHA5124183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeFilesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeFilesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD5d3ad3e4399e91fca86fe19c2a1b6bfbb
SHA18959d518f7b685439b8a6d4ba8556f176a1063e2
SHA2560c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a
SHA51283386faed8c4b442f769931c2dec42145c9a8a087b887ae44fb63db3c198be1a4e17ba59a8d1cca9584eba79ee0d4d2c5455d3e916725c6a9dc7eacfe3d249bd
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD5d3ad3e4399e91fca86fe19c2a1b6bfbb
SHA18959d518f7b685439b8a6d4ba8556f176a1063e2
SHA2560c63257d1fd65449922a9a2835b9a8284e5c1da6495586f24ae86f2b8a3ff01a
SHA51283386faed8c4b442f769931c2dec42145c9a8a087b887ae44fb63db3c198be1a4e17ba59a8d1cca9584eba79ee0d4d2c5455d3e916725c6a9dc7eacfe3d249bd
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memory/1384-166-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/2496-153-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2496-148-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2496-150-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2496-151-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2496-152-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2496-167-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2496-154-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2496-155-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2496-156-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2496-157-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2496-158-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2496-159-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2496-160-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2496-149-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/3880-140-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/3888-136-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/3888-134-0x0000000002F80000-0x00000000037F7000-memory.dmpFilesize
8.5MB