Analysis
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max time kernel
150s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
31-01-2023 17:07
Static task
static1
General
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Target
7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe
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Size
4.1MB
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MD5
1b5a7249ce4850973467f76c9129a405
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SHA1
c75c85828e2bb902854e6d68c44723c0e75dd675
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SHA256
7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b
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SHA512
cf4b632ccfd537406ec675386202eeb725b6d25230290c5813d743bab8063335c4bdbd6522937e873fc86c339b61f49b555657a02999c803f0f570668ad1f875
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SSDEEP
98304:dtaEBlqUcLEw7EmeMCmvkA4sReR/bTlPTaVxKd:XblqU6EwJAl2eFlPTaVK
Malware Config
Signatures
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Suspicious use of NtCreateUserProcessOtherParentProcess 4 IoCs
Processes:
svchost.exedescription pid process target process PID 2156 created 1952 2156 svchost.exe 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe PID 2156 created 1964 2156 svchost.exe csrss.exe PID 2156 created 1964 2156 svchost.exe csrss.exe PID 2156 created 1964 2156 svchost.exe csrss.exe -
Executes dropped EXE 2 IoCs
Processes:
csrss.exeinjector.exepid process 1964 csrss.exe 4284 injector.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 2 IoCs
Processes:
7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" csrss.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Drops file in Windows directory 2 IoCs
Processes:
7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exedescription ioc process File opened for modification C:\Windows\rss 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe File created C:\Windows\rss\csrss.exe 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.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 4528 schtasks.exe 2876 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-961 = "Paraguay Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-892 = "Morocco Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-104 = "Central Brazilian Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-171 = "Central Daylight Time (Mexico)" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-291 = "Central European Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2511 = "Lord Howe Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1911 = "Russia TZ 10 Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-449 = "Azerbaijan Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-371 = "Jerusalem Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-742 = "New Zealand Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1832 = "Russia TZ 2 Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-11 = "Azores Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-931 = "Coordinated Universal Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-871 = "Pakistan Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1932 = "Russia TZ 11 Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.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" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2512 = "Lord Howe Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1042 = "Ulaanbaatar Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-112 = "Eastern Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.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" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-331 = "E. Europe Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-448 = "Azerbaijan Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-602 = "Taipei Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1861 = "Russia TZ 6 Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.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" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2842 = "Saratov Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1502 = "Turkey Standard Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time" 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exeinjector.execsrss.exepid process 1952 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe 1952 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe 932 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe 932 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe 932 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe 932 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe 932 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe 932 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe 932 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe 932 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe 932 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe 932 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 1964 csrss.exe 1964 csrss.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 1964 csrss.exe 1964 csrss.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe 4284 injector.exe -
Suspicious use of AdjustPrivilegeToken 17 IoCs
Processes:
7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exesvchost.execsrss.exedescription pid process Token: SeDebugPrivilege 1952 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Token: SeImpersonatePrivilege 1952 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe Token: SeTcbPrivilege 2156 svchost.exe Token: SeTcbPrivilege 2156 svchost.exe Token: SeBackupPrivilege 2156 svchost.exe Token: SeRestorePrivilege 2156 svchost.exe Token: SeBackupPrivilege 2156 svchost.exe Token: SeRestorePrivilege 2156 svchost.exe Token: SeSystemEnvironmentPrivilege 1964 csrss.exe Token: SeBackupPrivilege 2156 svchost.exe Token: SeRestorePrivilege 2156 svchost.exe Token: SeBackupPrivilege 2156 svchost.exe Token: SeRestorePrivilege 2156 svchost.exe Token: SeBackupPrivilege 2156 svchost.exe Token: SeRestorePrivilege 2156 svchost.exe Token: SeBackupPrivilege 2156 svchost.exe Token: SeRestorePrivilege 2156 svchost.exe -
Suspicious use of WriteProcessMemory 18 IoCs
Processes:
svchost.exe7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.execmd.execsrss.exedescription pid process target process PID 2156 wrote to memory of 932 2156 svchost.exe 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe PID 2156 wrote to memory of 932 2156 svchost.exe 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe PID 2156 wrote to memory of 932 2156 svchost.exe 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe PID 932 wrote to memory of 4220 932 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe cmd.exe PID 932 wrote to memory of 4220 932 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe cmd.exe PID 4220 wrote to memory of 2000 4220 cmd.exe netsh.exe PID 4220 wrote to memory of 2000 4220 cmd.exe netsh.exe PID 932 wrote to memory of 1964 932 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe csrss.exe PID 932 wrote to memory of 1964 932 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe csrss.exe PID 932 wrote to memory of 1964 932 7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe csrss.exe PID 2156 wrote to memory of 4528 2156 svchost.exe schtasks.exe PID 2156 wrote to memory of 4528 2156 svchost.exe schtasks.exe PID 2156 wrote to memory of 3980 2156 svchost.exe schtasks.exe PID 2156 wrote to memory of 3980 2156 svchost.exe schtasks.exe PID 1964 wrote to memory of 4284 1964 csrss.exe injector.exe PID 1964 wrote to memory of 4284 1964 csrss.exe injector.exe PID 2156 wrote to memory of 2876 2156 svchost.exe schtasks.exe PID 2156 wrote to memory of 2876 2156 svchost.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe"C:\Users\Admin\AppData\Local\Temp\7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.exe"C:\Users\Admin\AppData\Local\Temp\7b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b.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
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeC:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
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C:\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
MD51b5a7249ce4850973467f76c9129a405
SHA1c75c85828e2bb902854e6d68c44723c0e75dd675
SHA2567b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b
SHA512cf4b632ccfd537406ec675386202eeb725b6d25230290c5813d743bab8063335c4bdbd6522937e873fc86c339b61f49b555657a02999c803f0f570668ad1f875
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD51b5a7249ce4850973467f76c9129a405
SHA1c75c85828e2bb902854e6d68c44723c0e75dd675
SHA2567b11c8ea8f3f80e9dfc24cbcb69bf01e0bb092347cb61140e06650aa58b92c2b
SHA512cf4b632ccfd537406ec675386202eeb725b6d25230290c5813d743bab8063335c4bdbd6522937e873fc86c339b61f49b555657a02999c803f0f570668ad1f875
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memory/932-144-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/932-135-0x0000000000000000-mapping.dmp
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memory/932-138-0x0000000002B99000-0x0000000002F82000-memory.dmpFilesize
3.9MB
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memory/932-140-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/1952-136-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/1952-134-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/1952-132-0x0000000002B45000-0x0000000002F2E000-memory.dmpFilesize
3.9MB
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memory/1952-133-0x0000000002F30000-0x00000000037A7000-memory.dmpFilesize
8.5MB
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memory/1964-141-0x0000000000000000-mapping.dmp
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memory/1964-153-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/1964-146-0x0000000002E00000-0x00000000031E9000-memory.dmpFilesize
3.9MB
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memory/1964-148-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/2000-139-0x0000000000000000-mapping.dmp
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memory/2876-152-0x0000000000000000-mapping.dmp
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memory/3980-147-0x0000000000000000-mapping.dmp
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memory/4220-137-0x0000000000000000-mapping.dmp
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memory/4284-149-0x0000000000000000-mapping.dmp
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memory/4528-145-0x0000000000000000-mapping.dmp