Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
27-01-2023 23:57
Static task
static1
General
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Target
4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe
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Size
4.1MB
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MD5
af39bbcc3563ff9272f22266c275a248
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SHA1
bf1d2f7d5304742c7ea663645ef942d9d3eba473
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SHA256
4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4
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SHA512
c637f9d1a2961244f9f1c99127d9470effaf3e60c27bb750c4f6ae61032c027367c93b5efda2861e607c45aff99f0bd5894edf71a74674520a7a0a4a6c4fdc38
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SSDEEP
98304:QhGXk0lBlkSduP/MUU6wIi7AJ1gNLP2BBbqkoxg317Gr/lQLVz:kslBaSdglK7yBbDoxw1aryz
Malware Config
Signatures
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Suspicious use of NtCreateUserProcessOtherParentProcess 4 IoCs
Processes:
svchost.exedescription pid process target process PID 5036 created 2636 5036 svchost.exe 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe PID 5036 created 2036 5036 svchost.exe csrss.exe PID 5036 created 2036 5036 svchost.exe csrss.exe PID 5036 created 2036 5036 svchost.exe csrss.exe -
Executes dropped EXE 2 IoCs
Processes:
csrss.exeinjector.exepid process 2036 csrss.exe 4596 injector.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 2 IoCs
Processes:
4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\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:
4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exedescription ioc process File opened for modification C:\Windows\rss 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe File created C:\Windows\rss\csrss.exe 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.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 3512 schtasks.exe 2776 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-441 = "Arabian Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1802 = "Line Islands Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.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" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-384 = "Namibia Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-742 = "New Zealand Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-632 = "Tokyo Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-671 = "AUS Eastern Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.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" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2772 = "Omsk Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2492 = "Aus Central W. Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1722 = "Libya Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-162 = "Central Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2512 = "Lord Howe Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.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" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-652 = "AUS Central Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-602 = "Taipei Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-342 = "Egypt Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2451 = "Saint Pierre Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.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" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-105 = "Central Brazilian Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1721 = "Libya Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-202 = "US Mountain Standard Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.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" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time" 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exeinjector.execsrss.exepid process 2636 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe 2636 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe 3208 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe 3208 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe 3208 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe 3208 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe 3208 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe 3208 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe 3208 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe 3208 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe 3208 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe 3208 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 2036 csrss.exe 2036 csrss.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 2036 csrss.exe 2036 csrss.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe 4596 injector.exe -
Suspicious use of AdjustPrivilegeToken 17 IoCs
Processes:
4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exesvchost.execsrss.exedescription pid process Token: SeDebugPrivilege 2636 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Token: SeImpersonatePrivilege 2636 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe Token: SeTcbPrivilege 5036 svchost.exe Token: SeTcbPrivilege 5036 svchost.exe Token: SeBackupPrivilege 5036 svchost.exe Token: SeRestorePrivilege 5036 svchost.exe Token: SeBackupPrivilege 5036 svchost.exe Token: SeRestorePrivilege 5036 svchost.exe Token: SeBackupPrivilege 5036 svchost.exe Token: SeRestorePrivilege 5036 svchost.exe Token: SeBackupPrivilege 5036 svchost.exe Token: SeRestorePrivilege 5036 svchost.exe Token: SeSystemEnvironmentPrivilege 2036 csrss.exe Token: SeBackupPrivilege 5036 svchost.exe Token: SeRestorePrivilege 5036 svchost.exe Token: SeBackupPrivilege 5036 svchost.exe Token: SeRestorePrivilege 5036 svchost.exe -
Suspicious use of WriteProcessMemory 18 IoCs
Processes:
svchost.exe4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.execmd.execsrss.exedescription pid process target process PID 5036 wrote to memory of 3208 5036 svchost.exe 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe PID 5036 wrote to memory of 3208 5036 svchost.exe 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe PID 5036 wrote to memory of 3208 5036 svchost.exe 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe PID 3208 wrote to memory of 1820 3208 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe cmd.exe PID 3208 wrote to memory of 1820 3208 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe cmd.exe PID 1820 wrote to memory of 4284 1820 cmd.exe netsh.exe PID 1820 wrote to memory of 4284 1820 cmd.exe netsh.exe PID 3208 wrote to memory of 2036 3208 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe csrss.exe PID 3208 wrote to memory of 2036 3208 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe csrss.exe PID 3208 wrote to memory of 2036 3208 4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe csrss.exe PID 5036 wrote to memory of 3512 5036 svchost.exe schtasks.exe PID 5036 wrote to memory of 3512 5036 svchost.exe schtasks.exe PID 5036 wrote to memory of 5028 5036 svchost.exe schtasks.exe PID 5036 wrote to memory of 5028 5036 svchost.exe schtasks.exe PID 2036 wrote to memory of 4596 2036 csrss.exe injector.exe PID 2036 wrote to memory of 4596 2036 csrss.exe injector.exe PID 5036 wrote to memory of 2776 5036 svchost.exe schtasks.exe PID 5036 wrote to memory of 2776 5036 svchost.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe"C:\Users\Admin\AppData\Local\Temp\4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.exe"C:\Users\Admin\AppData\Local\Temp\4b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4.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:\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\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
MD5af39bbcc3563ff9272f22266c275a248
SHA1bf1d2f7d5304742c7ea663645ef942d9d3eba473
SHA2564b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4
SHA512c637f9d1a2961244f9f1c99127d9470effaf3e60c27bb750c4f6ae61032c027367c93b5efda2861e607c45aff99f0bd5894edf71a74674520a7a0a4a6c4fdc38
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD5af39bbcc3563ff9272f22266c275a248
SHA1bf1d2f7d5304742c7ea663645ef942d9d3eba473
SHA2564b3d39741b3962c440017b53e4777c554e703a04b28e3fb7c025bec8489fc7a4
SHA512c637f9d1a2961244f9f1c99127d9470effaf3e60c27bb750c4f6ae61032c027367c93b5efda2861e607c45aff99f0bd5894edf71a74674520a7a0a4a6c4fdc38
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memory/1820-137-0x0000000000000000-mapping.dmp
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memory/2036-153-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2036-141-0x0000000000000000-mapping.dmp
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memory/2036-148-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2036-147-0x0000000002E00000-0x00000000031E9000-memory.dmpFilesize
3.9MB
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memory/2636-133-0x0000000002E70000-0x00000000036E7000-memory.dmpFilesize
8.5MB
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memory/2636-134-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2636-136-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2636-132-0x0000000002A82000-0x0000000002E6B000-memory.dmpFilesize
3.9MB
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memory/2776-152-0x0000000000000000-mapping.dmp
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memory/3208-140-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/3208-144-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/3208-135-0x0000000000000000-mapping.dmp
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memory/3208-139-0x0000000002AA7000-0x0000000002E90000-memory.dmpFilesize
3.9MB
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memory/3512-145-0x0000000000000000-mapping.dmp
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memory/4284-138-0x0000000000000000-mapping.dmp
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memory/4596-149-0x0000000000000000-mapping.dmp
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memory/5028-146-0x0000000000000000-mapping.dmp