Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
25-03-2023 22:25
Static task
static1
General
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Target
38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe
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Size
4.1MB
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MD5
35598ec1e8862d17f7cdd6739c46b618
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SHA1
41ffbc74b0d8cd51ca5c8ecc3af7d706d902f7e3
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SHA256
38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511
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SHA512
e5cadff38a9412280cae56f42549feafefd4fffe7d0cac779713ded41ffd47598694865c0f50268a444ee4e5b48df20d2b07c5fa83bd2768d238d0f4081d2093
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SSDEEP
98304:tPj+LIsgp57UjynWiqJRcTpmJQWxujNhSZRaDxnP:ALYJU2UqAJQWxujSCxnP
Malware Config
Signatures
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Glupteba payload 17 IoCs
Processes:
resource yara_rule behavioral1/memory/4644-134-0x0000000005100000-0x0000000005977000-memory.dmp family_glupteba behavioral1/memory/4644-135-0x0000000000400000-0x0000000002F48000-memory.dmp family_glupteba behavioral1/memory/4644-136-0x0000000005100000-0x0000000005977000-memory.dmp family_glupteba behavioral1/memory/3192-142-0x0000000000400000-0x0000000002F48000-memory.dmp family_glupteba behavioral1/memory/1564-149-0x0000000000400000-0x0000000002F48000-memory.dmp family_glupteba behavioral1/memory/1564-150-0x0000000000400000-0x0000000002F48000-memory.dmp family_glupteba behavioral1/memory/1564-151-0x0000000000400000-0x0000000002F48000-memory.dmp family_glupteba behavioral1/memory/1564-152-0x0000000000400000-0x0000000002F48000-memory.dmp family_glupteba behavioral1/memory/1564-153-0x0000000000400000-0x0000000002F48000-memory.dmp family_glupteba behavioral1/memory/1564-154-0x0000000000400000-0x0000000002F48000-memory.dmp family_glupteba behavioral1/memory/1564-155-0x0000000000400000-0x0000000002F48000-memory.dmp family_glupteba behavioral1/memory/1564-156-0x0000000000400000-0x0000000002F48000-memory.dmp family_glupteba behavioral1/memory/1564-157-0x0000000000400000-0x0000000002F48000-memory.dmp family_glupteba behavioral1/memory/1564-158-0x0000000000400000-0x0000000002F48000-memory.dmp family_glupteba behavioral1/memory/1564-159-0x0000000000400000-0x0000000002F48000-memory.dmp family_glupteba behavioral1/memory/1564-160-0x0000000000400000-0x0000000002F48000-memory.dmp family_glupteba behavioral1/memory/1564-161-0x0000000000400000-0x0000000002F48000-memory.dmp family_glupteba -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Executes dropped EXE 3 IoCs
Processes:
csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exepid process 1564 csrss.exe 3552 injector.exe 4460 f801950a962ddba14caaa44bf084b55c.exe -
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe upx C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe upx behavioral1/memory/4460-167-0x0000000000400000-0x0000000000C25000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" csrss.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Manipulates WinMonFS driver. 1 IoCs
Roottkits write to WinMonFS to hide directories/files from being detected.
Processes:
csrss.exedescription ioc process File opened for modification \??\WinMonFS csrss.exe -
Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.
Processes:
38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe -
Drops file in Windows directory 2 IoCs
Processes:
38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exedescription ioc process File opened for modification C:\Windows\rss 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe File created C:\Windows\rss\csrss.exe 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Modifies data under HKEY_USERS 64 IoCs
Processes:
38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2941 = "Sao Tome Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-371 = "Jerusalem Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-982 = "Kamchatka Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2142 = "Transbaikal Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2341 = "Haiti Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2892 = "Sudan Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-441 = "Arabian Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1721 = "Libya Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.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" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.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" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.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" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.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" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.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" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.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" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3051 = "Qyzylorda Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1042 = "Ulaanbaatar Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1502 = "Turkey Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-871 = "Pakistan Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-672 = "AUS Eastern Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-251 = "Dateline Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2891 = "Sudan Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.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" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-391 = "Arab Daylight Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time" 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exeinjector.execsrss.exepid process 4644 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe 4644 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe 3192 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe 3192 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe 3192 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe 3192 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe 3192 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe 3192 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe 3192 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe 3192 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe 3192 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe 3192 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 1564 csrss.exe 1564 csrss.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 1564 csrss.exe 1564 csrss.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe 3552 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.execsrss.exedescription pid process Token: SeDebugPrivilege 4644 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Token: SeImpersonatePrivilege 4644 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe Token: SeSystemEnvironmentPrivilege 1564 csrss.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.execmd.execsrss.exedescription pid process target process PID 3192 wrote to memory of 3804 3192 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe cmd.exe PID 3192 wrote to memory of 3804 3192 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe cmd.exe PID 3804 wrote to memory of 1172 3804 cmd.exe netsh.exe PID 3804 wrote to memory of 1172 3804 cmd.exe netsh.exe PID 3192 wrote to memory of 1564 3192 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe csrss.exe PID 3192 wrote to memory of 1564 3192 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe csrss.exe PID 3192 wrote to memory of 1564 3192 38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe csrss.exe PID 1564 wrote to memory of 3552 1564 csrss.exe injector.exe PID 1564 wrote to memory of 3552 1564 csrss.exe injector.exe PID 1564 wrote to memory of 4460 1564 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 1564 wrote to memory of 4460 1564 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 1564 wrote to memory of 4460 1564 csrss.exe f801950a962ddba14caaa44bf084b55c.exe -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe"C:\Users\Admin\AppData\Local\Temp\38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe"C:\Users\Admin\AppData\Local\Temp\38c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511.exe"2⤵
- Adds Run key to start application
- Checks for VirtualBox DLLs, possible anti-VM trick
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\netsh.exenetsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes4⤵
- Modifies Windows Firewall
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeC:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
-
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
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
MD535598ec1e8862d17f7cdd6739c46b618
SHA141ffbc74b0d8cd51ca5c8ecc3af7d706d902f7e3
SHA25638c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511
SHA512e5cadff38a9412280cae56f42549feafefd4fffe7d0cac779713ded41ffd47598694865c0f50268a444ee4e5b48df20d2b07c5fa83bd2768d238d0f4081d2093
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD535598ec1e8862d17f7cdd6739c46b618
SHA141ffbc74b0d8cd51ca5c8ecc3af7d706d902f7e3
SHA25638c810d283b9604e61eaa851934aa0d922361e37bcd0915e3edfc54b935a6511
SHA512e5cadff38a9412280cae56f42549feafefd4fffe7d0cac779713ded41ffd47598694865c0f50268a444ee4e5b48df20d2b07c5fa83bd2768d238d0f4081d2093
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memory/1564-153-0x0000000000400000-0x0000000002F48000-memory.dmpFilesize
43.3MB
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memory/1564-156-0x0000000000400000-0x0000000002F48000-memory.dmpFilesize
43.3MB
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memory/1564-149-0x0000000000400000-0x0000000002F48000-memory.dmpFilesize
43.3MB
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memory/1564-150-0x0000000000400000-0x0000000002F48000-memory.dmpFilesize
43.3MB
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memory/1564-151-0x0000000000400000-0x0000000002F48000-memory.dmpFilesize
43.3MB
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memory/1564-152-0x0000000000400000-0x0000000002F48000-memory.dmpFilesize
43.3MB
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memory/1564-161-0x0000000000400000-0x0000000002F48000-memory.dmpFilesize
43.3MB
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memory/1564-154-0x0000000000400000-0x0000000002F48000-memory.dmpFilesize
43.3MB
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memory/1564-155-0x0000000000400000-0x0000000002F48000-memory.dmpFilesize
43.3MB
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memory/1564-160-0x0000000000400000-0x0000000002F48000-memory.dmpFilesize
43.3MB
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memory/1564-157-0x0000000000400000-0x0000000002F48000-memory.dmpFilesize
43.3MB
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memory/1564-158-0x0000000000400000-0x0000000002F48000-memory.dmpFilesize
43.3MB
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memory/1564-159-0x0000000000400000-0x0000000002F48000-memory.dmpFilesize
43.3MB
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memory/3192-142-0x0000000000400000-0x0000000002F48000-memory.dmpFilesize
43.3MB
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memory/4460-167-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/4644-134-0x0000000005100000-0x0000000005977000-memory.dmpFilesize
8.5MB
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memory/4644-136-0x0000000005100000-0x0000000005977000-memory.dmpFilesize
8.5MB
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memory/4644-135-0x0000000000400000-0x0000000002F48000-memory.dmpFilesize
43.3MB