Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
28-01-2023 21:27
Static task
static1
General
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Target
8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe
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Size
4.1MB
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MD5
aa8009cc6fc63a931d2f0addb1392733
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SHA1
063939ed0b994133cbd14f9e641bf4484db0bcb0
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SHA256
8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61
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SHA512
40549204e90f3d60dc8984acabe9e6a379005f73e1af3a61d2c0f7dc6ffa762531f870860b1cea3c3b123f9a86457b1cb6fa2a7e8e7c0617c52dadbb5547a41b
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SSDEEP
98304:BcOSPN0ueiVcQ51kmaBVDLp+fpbFwmiNhkVQzmRGopt:BcOSPN09iVV1FstpiLxigVpJt
Malware Config
Signatures
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Suspicious use of NtCreateUserProcessOtherParentProcess 4 IoCs
Processes:
svchost.exedescription pid process target process PID 4328 created 4872 4328 svchost.exe 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe PID 4328 created 220 4328 svchost.exe csrss.exe PID 4328 created 220 4328 svchost.exe csrss.exe PID 4328 created 220 4328 svchost.exe csrss.exe -
Executes dropped EXE 2 IoCs
Processes:
csrss.exeinjector.exepid process 220 csrss.exe 2800 injector.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 2 IoCs
Processes:
8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.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\"" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.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:
8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exedescription ioc process File opened for modification C:\Windows\rss 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe File created C:\Windows\rss\csrss.exe 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.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 3692 schtasks.exe 4504 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-331 = "E. Europe Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.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" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-352 = "FLE Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2942 = "Sao Tome Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-448 = "Azerbaijan Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-272 = "Greenwich Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2892 = "Sudan Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2161 = "Altai Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-412 = "E. Africa Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-632 = "Tokyo Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.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" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1662 = "Bahia Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-931 = "Coordinated Universal Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.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" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.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" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.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" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-271 = "Greenwich Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-71 = "Newfoundland Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-691 = "Tasmania Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.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" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2531 = "Chatham Islands Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.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" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.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" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2391 = "Aleutian Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1821 = "Russia TZ 1 Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-384 = "Namibia Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-242 = "Samoa Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-572 = "China Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-112 = "Eastern Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time" 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exeinjector.execsrss.exepid process 4872 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe 4872 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe 1128 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe 1128 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe 1128 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe 1128 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe 1128 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe 1128 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe 1128 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe 1128 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe 1128 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe 1128 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 220 csrss.exe 220 csrss.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 220 csrss.exe 220 csrss.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe 2800 injector.exe -
Suspicious use of AdjustPrivilegeToken 17 IoCs
Processes:
8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exesvchost.execsrss.exedescription pid process Token: SeDebugPrivilege 4872 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Token: SeImpersonatePrivilege 4872 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe Token: SeTcbPrivilege 4328 svchost.exe Token: SeTcbPrivilege 4328 svchost.exe Token: SeBackupPrivilege 4328 svchost.exe Token: SeRestorePrivilege 4328 svchost.exe Token: SeBackupPrivilege 4328 svchost.exe Token: SeRestorePrivilege 4328 svchost.exe Token: SeBackupPrivilege 4328 svchost.exe Token: SeRestorePrivilege 4328 svchost.exe Token: SeBackupPrivilege 4328 svchost.exe Token: SeRestorePrivilege 4328 svchost.exe Token: SeSystemEnvironmentPrivilege 220 csrss.exe Token: SeBackupPrivilege 4328 svchost.exe Token: SeRestorePrivilege 4328 svchost.exe Token: SeBackupPrivilege 4328 svchost.exe Token: SeRestorePrivilege 4328 svchost.exe -
Suspicious use of WriteProcessMemory 18 IoCs
Processes:
svchost.exe8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.execmd.execsrss.exedescription pid process target process PID 4328 wrote to memory of 1128 4328 svchost.exe 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe PID 4328 wrote to memory of 1128 4328 svchost.exe 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe PID 4328 wrote to memory of 1128 4328 svchost.exe 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe PID 1128 wrote to memory of 1144 1128 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe cmd.exe PID 1128 wrote to memory of 1144 1128 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe cmd.exe PID 1144 wrote to memory of 4260 1144 cmd.exe netsh.exe PID 1144 wrote to memory of 4260 1144 cmd.exe netsh.exe PID 1128 wrote to memory of 220 1128 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe csrss.exe PID 1128 wrote to memory of 220 1128 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe csrss.exe PID 1128 wrote to memory of 220 1128 8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe csrss.exe PID 4328 wrote to memory of 3692 4328 svchost.exe schtasks.exe PID 4328 wrote to memory of 3692 4328 svchost.exe schtasks.exe PID 4328 wrote to memory of 3596 4328 svchost.exe schtasks.exe PID 4328 wrote to memory of 3596 4328 svchost.exe schtasks.exe PID 220 wrote to memory of 2800 220 csrss.exe injector.exe PID 220 wrote to memory of 2800 220 csrss.exe injector.exe PID 4328 wrote to memory of 4504 4328 svchost.exe schtasks.exe PID 4328 wrote to memory of 4504 4328 svchost.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe"C:\Users\Admin\AppData\Local\Temp\8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.exe"C:\Users\Admin\AppData\Local\Temp\8e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61.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
MD5aa8009cc6fc63a931d2f0addb1392733
SHA1063939ed0b994133cbd14f9e641bf4484db0bcb0
SHA2568e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61
SHA51240549204e90f3d60dc8984acabe9e6a379005f73e1af3a61d2c0f7dc6ffa762531f870860b1cea3c3b123f9a86457b1cb6fa2a7e8e7c0617c52dadbb5547a41b
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD5aa8009cc6fc63a931d2f0addb1392733
SHA1063939ed0b994133cbd14f9e641bf4484db0bcb0
SHA2568e839d8e318f36a7ee2e4d4b070862e27fc3ad93affc29bfdcad95cab8b3ae61
SHA51240549204e90f3d60dc8984acabe9e6a379005f73e1af3a61d2c0f7dc6ffa762531f870860b1cea3c3b123f9a86457b1cb6fa2a7e8e7c0617c52dadbb5547a41b
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memory/220-153-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/220-147-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/220-145-0x0000000002E00000-0x00000000031E9000-memory.dmpFilesize
3.9MB
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memory/220-141-0x0000000000000000-mapping.dmp
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memory/1128-144-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/1128-135-0x0000000000000000-mapping.dmp
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memory/1128-138-0x0000000002994000-0x0000000002D7D000-memory.dmpFilesize
3.9MB
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memory/1128-139-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/1144-137-0x0000000000000000-mapping.dmp
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memory/2800-149-0x0000000000000000-mapping.dmp
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memory/3596-148-0x0000000000000000-mapping.dmp
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memory/3692-146-0x0000000000000000-mapping.dmp
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memory/4260-140-0x0000000000000000-mapping.dmp
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memory/4504-152-0x0000000000000000-mapping.dmp
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memory/4872-132-0x0000000002BDB000-0x0000000002FC4000-memory.dmpFilesize
3.9MB
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memory/4872-136-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4872-134-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4872-133-0x0000000002FD0000-0x0000000003847000-memory.dmpFilesize
8.5MB