Analysis
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max time kernel
141s -
max time network
134s -
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 10:07
Static task
static1
General
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Target
74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe
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Size
4.1MB
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MD5
de7a2dad62244bbd5d53de9e0b1ec08e
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SHA1
e76617becb2ee62dee6bb730fb5eb338492cfcd8
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SHA256
74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087
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SHA512
9115ee960b10c4971dfb19600cbdf96d2fdcef46c7382d5d13cf3c8e8b353c10e5ab7c93258d694ec96066891f08703b7d93f49f75816ae8717c2a4cd74afd96
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SSDEEP
98304:dgDaCFb6F3+G/r+eLPqz9ttPc9cWMNfHla/sghWgL3zq1LwM1r:8aCl6FOG/r/Q5fdHl0sg5zzq1sM5
Malware Config
Signatures
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Glupteba payload 15 IoCs
Processes:
resource yara_rule behavioral1/memory/1400-134-0x0000000002E70000-0x00000000036E7000-memory.dmp family_glupteba behavioral1/memory/1400-135-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/432-140-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/4072-148-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/4072-149-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/4072-150-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/4072-151-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/4072-152-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/4072-153-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/4072-154-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/4072-155-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/4072-156-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/4072-157-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/4072-158-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/4072-164-0x0000000000400000-0x0000000000C91000-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 4072 csrss.exe 3284 injector.exe 4120 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/4120-165-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/4120-166-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/4120-168-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/4120-169-0x0000000000400000-0x0000000000C25000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\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 -
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:
74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe -
Drops file in Windows directory 2 IoCs
Processes:
74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exedescription ioc process File created C:\Windows\rss\csrss.exe 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe File opened for modification C:\Windows\rss 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.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:
74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2751 = "Tomsk Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1661 = "Bahia Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-71 = "Newfoundland Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1912 = "Russia TZ 10 Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3142 = "South Sudan Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-251 = "Dateline Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-412 = "E. Africa Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1822 = "Russia TZ 1 Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-571 = "China Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-982 = "Kamchatka Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1931 = "Russia TZ 11 Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2842 = "Saratov Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1842 = "Russia TZ 4 Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.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" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2391 = "Aleutian Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-291 = "Central European Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-732 = "Fiji Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2432 = "Cuba Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1862 = "Russia TZ 6 Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1892 = "Russia TZ 3 Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2142 = "Transbaikal Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-562 = "SE Asia Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-342 = "Egypt Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.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" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1841 = "Russia TZ 4 Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time" 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exeinjector.execsrss.exepid process 1400 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe 1400 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe 432 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe 432 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe 432 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe 432 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe 432 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe 432 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe 432 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe 432 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe 432 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe 432 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 4072 csrss.exe 4072 csrss.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 4072 csrss.exe 4072 csrss.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe 3284 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.execsrss.exedescription pid process Token: SeDebugPrivilege 1400 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Token: SeImpersonatePrivilege 1400 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe Token: SeSystemEnvironmentPrivilege 4072 csrss.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.execmd.execsrss.exedescription pid process target process PID 432 wrote to memory of 3728 432 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe cmd.exe PID 432 wrote to memory of 3728 432 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe cmd.exe PID 3728 wrote to memory of 4612 3728 cmd.exe netsh.exe PID 3728 wrote to memory of 4612 3728 cmd.exe netsh.exe PID 432 wrote to memory of 4072 432 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe csrss.exe PID 432 wrote to memory of 4072 432 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe csrss.exe PID 432 wrote to memory of 4072 432 74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe csrss.exe PID 4072 wrote to memory of 3284 4072 csrss.exe injector.exe PID 4072 wrote to memory of 3284 4072 csrss.exe injector.exe PID 4072 wrote to memory of 4120 4072 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 4072 wrote to memory of 4120 4072 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 4072 wrote to memory of 4120 4072 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\74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe"C:\Users\Admin\AppData\Local\Temp\74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.exe"C:\Users\Admin\AppData\Local\Temp\74471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087.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.
- 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\NtQuerySystemInformationHook.dllFilesize
99KB
MD509031a062610d77d685c9934318b4170
SHA1880f744184e7774f3d14c1bb857e21cc7fe89a6d
SHA256778bd69af403df3c4e074c31b3850d71bf0e64524bea4272a802ca9520b379dd
SHA5129a276e1f0f55d35f2bf38eb093464f7065bdd30a660e6d1c62eed5e76d1fb2201567b89d9ae65d2d89dc99b142159e36fb73be8d5e08252a975d50544a7cda27
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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
MD5de7a2dad62244bbd5d53de9e0b1ec08e
SHA1e76617becb2ee62dee6bb730fb5eb338492cfcd8
SHA25674471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087
SHA5129115ee960b10c4971dfb19600cbdf96d2fdcef46c7382d5d13cf3c8e8b353c10e5ab7c93258d694ec96066891f08703b7d93f49f75816ae8717c2a4cd74afd96
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD5de7a2dad62244bbd5d53de9e0b1ec08e
SHA1e76617becb2ee62dee6bb730fb5eb338492cfcd8
SHA25674471f5d936ab29fef35c715870178f51114f22d008688bba49ff360939d7087
SHA5129115ee960b10c4971dfb19600cbdf96d2fdcef46c7382d5d13cf3c8e8b353c10e5ab7c93258d694ec96066891f08703b7d93f49f75816ae8717c2a4cd74afd96
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memory/432-140-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/1400-134-0x0000000002E70000-0x00000000036E7000-memory.dmpFilesize
8.5MB
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memory/1400-135-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4072-156-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4072-158-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4072-153-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4072-154-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4072-155-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4072-151-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4072-157-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4072-152-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4072-150-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4072-149-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4072-164-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4072-148-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4120-166-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/4120-165-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/4120-168-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/4120-169-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB