Analysis
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max time kernel
150s -
max time network
128s -
platform
windows10-1703_x64 -
resource
win10-20230220-en -
resource tags
arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system -
submitted
28-03-2023 22:41
Static task
static1
General
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Target
1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe
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Size
4.1MB
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MD5
52a6da34618afc5cdf3a2d9e6829564b
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SHA1
6592b3e4a47b973a99d7752e5cb26a10f4c04756
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SHA256
1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c
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SHA512
e7a480946d28c3914e045801e3e2c3c5b22cc2fc5c3bc751e9bc1d26561fa40bbd66976395229ab4c0c79763969c060b44b6973cafcc3c5b7bed7cf5eb494157
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SSDEEP
98304:oUdwLCQU4shpicxy6jtxBRMATIHJvkKrcghVV:oUudU4micxy6XvCv/VV
Malware Config
Signatures
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Glupteba payload 15 IoCs
Processes:
resource yara_rule behavioral1/memory/3668-120-0x0000000005140000-0x00000000059B7000-memory.dmp family_glupteba behavioral1/memory/3668-121-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/4144-126-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/936-134-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/936-135-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/936-136-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/936-137-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/936-138-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/936-139-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/936-140-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/936-141-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/936-142-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/936-143-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/936-149-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/936-151-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba -
Processes:
1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe = "0" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Executes dropped EXE 3 IoCs
Processes:
csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exepid process 936 csrss.exe 4312 injector.exe 3752 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/3752-150-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/3752-152-0x0000000000400000-0x0000000000C25000-memory.dmp upx -
Processes:
1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe = "0" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3853465373-1718857667-1861325682-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\S-1-5-21-3853465373-1718857667-1861325682-1000\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:
1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe -
Drops file in Windows directory 2 IoCs
Processes:
1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exedescription ioc process File opened for modification C:\Windows\rss 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe File created C:\Windows\rss\csrss.exe 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.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 4880 schtasks.exe 4956 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-362 = "GTB Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1831 = "Russia TZ 2 Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-71 = "Newfoundland Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-122 = "SA Pacific Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-251 = "Dateline Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1721 = "Libya Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-831 = "SA Eastern Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-412 = "E. Africa Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-181 = "Mountain Daylight Time (Mexico)" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-332 = "E. Europe Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1862 = "Russia TZ 6 Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2161 = "Altai Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-291 = "Central European Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-112 = "Eastern Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.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" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1912 = "Russia TZ 10 Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.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" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1971 = "Belarus Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.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" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-602 = "Taipei Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.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" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2751 = "Tomsk Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1801 = "Line Islands Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.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" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.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" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-82 = "Atlantic Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-391 = "Arab Daylight Time" 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exeinjector.execsrss.exepid process 3668 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe 3668 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe 4144 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe 4144 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe 4144 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe 4144 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe 4144 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe 4144 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe 4144 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe 4144 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe 4144 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe 4144 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 936 csrss.exe 936 csrss.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 936 csrss.exe 936 csrss.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe 4312 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.execsrss.exedescription pid process Token: SeDebugPrivilege 3668 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Token: SeImpersonatePrivilege 3668 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe Token: SeSystemEnvironmentPrivilege 936 csrss.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.execmd.execsrss.exedescription pid process target process PID 4144 wrote to memory of 2440 4144 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe cmd.exe PID 4144 wrote to memory of 2440 4144 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe cmd.exe PID 2440 wrote to memory of 4864 2440 cmd.exe netsh.exe PID 2440 wrote to memory of 4864 2440 cmd.exe netsh.exe PID 4144 wrote to memory of 936 4144 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe csrss.exe PID 4144 wrote to memory of 936 4144 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe csrss.exe PID 4144 wrote to memory of 936 4144 1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe csrss.exe PID 936 wrote to memory of 4312 936 csrss.exe injector.exe PID 936 wrote to memory of 4312 936 csrss.exe injector.exe PID 936 wrote to memory of 3752 936 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 936 wrote to memory of 3752 936 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 936 wrote to memory of 3752 936 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\1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe"C:\Users\Admin\AppData\Local\Temp\1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3668 -
C:\Users\Admin\AppData\Local\Temp\1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe"C:\Users\Admin\AppData\Local\Temp\1490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c.exe"2⤵
- Windows security bypass
- Windows security modification
- 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
PID:4144 -
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
PID:2440 -
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
PID:4864 -
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
PID:936 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:4880 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:1204
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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
PID:4312 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:4956 -
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exeC:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe4⤵
- Executes dropped EXE
PID:3752
Network
MITRE ATT&CK Enterprise 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
MD552a6da34618afc5cdf3a2d9e6829564b
SHA16592b3e4a47b973a99d7752e5cb26a10f4c04756
SHA2561490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c
SHA512e7a480946d28c3914e045801e3e2c3c5b22cc2fc5c3bc751e9bc1d26561fa40bbd66976395229ab4c0c79763969c060b44b6973cafcc3c5b7bed7cf5eb494157
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD552a6da34618afc5cdf3a2d9e6829564b
SHA16592b3e4a47b973a99d7752e5cb26a10f4c04756
SHA2561490798f58131742a4ce542127369e0df6b6d3a8f0127fc7847678ace7a0537c
SHA512e7a480946d28c3914e045801e3e2c3c5b22cc2fc5c3bc751e9bc1d26561fa40bbd66976395229ab4c0c79763969c060b44b6973cafcc3c5b7bed7cf5eb494157
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memory/936-137-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/936-142-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/936-135-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/936-136-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/936-151-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/936-138-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/936-139-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/936-140-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/936-141-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/936-134-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/936-143-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/936-149-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/3668-121-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/3668-120-0x0000000005140000-0x00000000059B7000-memory.dmpFilesize
8.5MB
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memory/3752-150-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/3752-152-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/4144-126-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB