Analysis
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max time kernel
170s -
max time network
172s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
29-01-2023 09:10
Static task
static1
General
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Target
4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe
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Size
4.1MB
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MD5
1dd44502476061afcaeefeab779dc193
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SHA1
1ede268be2268a75f4ba2447accbdf373634b0db
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SHA256
4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc
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SHA512
82266625171ae0f5eae841a4bcddcee45d342d1d0dcf10cc7f8733c459d519c5a744e3f6af335de53e59a09b0b3d211899dcc147767a50887b2bed74318456b6
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SSDEEP
98304:SCVIR5EcZ0HiqrPbayKgjuvn3vJf/QQ6tiiCH5rcMnIYSBgSPY/BL5mR3E:TS0iqrTPEvpYbi5r7ndSBgSgpsa
Malware Config
Signatures
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Suspicious use of NtCreateUserProcessOtherParentProcess 4 IoCs
Processes:
svchost.exedescription pid process target process PID 4376 created 4840 4376 svchost.exe 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe PID 4376 created 3764 4376 svchost.exe csrss.exe PID 4376 created 3764 4376 svchost.exe csrss.exe PID 4376 created 3764 4376 svchost.exe csrss.exe -
Executes dropped EXE 3 IoCs
Processes:
csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exepid process 3764 csrss.exe 3276 injector.exe 4360 f801950a962ddba14caaa44bf084b55c.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
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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/4360-157-0x0000000000400000-0x0000000000C25000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\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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Drops file in Windows directory 2 IoCs
Processes:
4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exedescription ioc process File opened for modification C:\Windows\rss 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe File created C:\Windows\rss\csrss.exe 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.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 5016 schtasks.exe 3912 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2392 = "Aleutian Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-41 = "E. South America Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2842 = "Saratov Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-442 = "Arabian Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-449 = "Azerbaijan Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1871 = "Russia TZ 7 Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-931 = "Coordinated Universal Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-242 = "Samoa Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-384 = "Namibia Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2752 = "Tomsk Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-831 = "SA Eastern Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2142 = "Transbaikal Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-452 = "Caucasus Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-752 = "Tonga Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2941 = "Sao Tome Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2892 = "Sudan Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2792 = "Novosibirsk Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-631 = "Tokyo Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2491 = "Aus Central W. Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-371 = "Jerusalem Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-602 = "Taipei Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.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" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1661 = "Bahia Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2001 = "Cabo Verde Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2771 = "Omsk Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2572 = "Turks and Caicos Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time" 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exeinjector.execsrss.exepid process 4840 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe 4840 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe 4684 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe 4684 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe 4684 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe 4684 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe 4684 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe 4684 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe 4684 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe 4684 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe 4684 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe 4684 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3764 csrss.exe 3764 csrss.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3764 csrss.exe 3764 csrss.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe 3276 injector.exe -
Suspicious use of AdjustPrivilegeToken 17 IoCs
Processes:
4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exesvchost.execsrss.exedescription pid process Token: SeDebugPrivilege 4840 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Token: SeImpersonatePrivilege 4840 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe Token: SeTcbPrivilege 4376 svchost.exe Token: SeTcbPrivilege 4376 svchost.exe Token: SeBackupPrivilege 4376 svchost.exe Token: SeRestorePrivilege 4376 svchost.exe Token: SeBackupPrivilege 4376 svchost.exe Token: SeRestorePrivilege 4376 svchost.exe Token: SeSystemEnvironmentPrivilege 3764 csrss.exe Token: SeBackupPrivilege 4376 svchost.exe Token: SeRestorePrivilege 4376 svchost.exe Token: SeBackupPrivilege 4376 svchost.exe Token: SeRestorePrivilege 4376 svchost.exe Token: SeBackupPrivilege 4376 svchost.exe Token: SeRestorePrivilege 4376 svchost.exe Token: SeBackupPrivilege 4376 svchost.exe Token: SeRestorePrivilege 4376 svchost.exe -
Suspicious use of WriteProcessMemory 21 IoCs
Processes:
svchost.exe4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.execmd.execsrss.exedescription pid process target process PID 4376 wrote to memory of 4684 4376 svchost.exe 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe PID 4376 wrote to memory of 4684 4376 svchost.exe 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe PID 4376 wrote to memory of 4684 4376 svchost.exe 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe PID 4684 wrote to memory of 228 4684 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe cmd.exe PID 4684 wrote to memory of 228 4684 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe cmd.exe PID 228 wrote to memory of 4276 228 cmd.exe netsh.exe PID 228 wrote to memory of 4276 228 cmd.exe netsh.exe PID 4684 wrote to memory of 3764 4684 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe csrss.exe PID 4684 wrote to memory of 3764 4684 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe csrss.exe PID 4684 wrote to memory of 3764 4684 4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe csrss.exe PID 4376 wrote to memory of 5016 4376 svchost.exe schtasks.exe PID 4376 wrote to memory of 5016 4376 svchost.exe schtasks.exe PID 4376 wrote to memory of 3280 4376 svchost.exe schtasks.exe PID 4376 wrote to memory of 3280 4376 svchost.exe schtasks.exe PID 3764 wrote to memory of 3276 3764 csrss.exe injector.exe PID 3764 wrote to memory of 3276 3764 csrss.exe injector.exe PID 4376 wrote to memory of 3912 4376 svchost.exe schtasks.exe PID 4376 wrote to memory of 3912 4376 svchost.exe schtasks.exe PID 3764 wrote to memory of 4360 3764 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 3764 wrote to memory of 4360 3764 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 3764 wrote to memory of 4360 3764 csrss.exe f801950a962ddba14caaa44bf084b55c.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe"C:\Users\Admin\AppData\Local\Temp\4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe"C:\Users\Admin\AppData\Local\Temp\4b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc.exe"2⤵
- Adds Run key to start application
- 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
- 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\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s seclogon1⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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
MD51dd44502476061afcaeefeab779dc193
SHA11ede268be2268a75f4ba2447accbdf373634b0db
SHA2564b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc
SHA51282266625171ae0f5eae841a4bcddcee45d342d1d0dcf10cc7f8733c459d519c5a744e3f6af335de53e59a09b0b3d211899dcc147767a50887b2bed74318456b6
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD51dd44502476061afcaeefeab779dc193
SHA11ede268be2268a75f4ba2447accbdf373634b0db
SHA2564b724523c00f5b02996e788258b5eb32b28af1b83e2a2ed6ab1995baa055c5fc
SHA51282266625171ae0f5eae841a4bcddcee45d342d1d0dcf10cc7f8733c459d519c5a744e3f6af335de53e59a09b0b3d211899dcc147767a50887b2bed74318456b6
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memory/228-137-0x0000000000000000-mapping.dmp
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memory/3276-149-0x0000000000000000-mapping.dmp
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memory/3280-146-0x0000000000000000-mapping.dmp
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memory/3764-141-0x0000000000000000-mapping.dmp
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memory/3764-147-0x0000000002E00000-0x00000000031E9000-memory.dmpFilesize
3.9MB
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memory/3764-153-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/3764-148-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/3764-158-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/3912-152-0x0000000000000000-mapping.dmp
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memory/4276-138-0x0000000000000000-mapping.dmp
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memory/4360-154-0x0000000000000000-mapping.dmp
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memory/4360-157-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/4684-144-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4684-140-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4684-139-0x000000000279A000-0x0000000002B83000-memory.dmpFilesize
3.9MB
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memory/4684-135-0x0000000000000000-mapping.dmp
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memory/4840-132-0x0000000002C5A000-0x0000000003043000-memory.dmpFilesize
3.9MB
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memory/4840-136-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4840-134-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4840-133-0x0000000003050000-0x00000000038C7000-memory.dmpFilesize
8.5MB
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memory/5016-145-0x0000000000000000-mapping.dmp