Analysis
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max time kernel
150s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20230221-en -
resource tags
arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system -
submitted
27-03-2023 18:17
Static task
static1
General
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Target
3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe
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Size
4.1MB
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MD5
9e72ce3c2bf266f37a62d4115a52b3f9
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SHA1
662a7f9cb179881ea1d683dbe340542fc21ef521
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SHA256
3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89
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SHA512
ef7fcd444e4c5624fd798131991d78c90491b734f66b5c0b74a401f406a47865a7799688815145254d630066c172d2cc0d549d7707e260713dfd741a371e6154
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SSDEEP
98304:CR4aIsqGXrMM5+XC79bek6AV6rp64timIOdgjmBZlYVyYA2:42RGgM5+y7kk6AV6/LIygjgZ2Vp
Malware Config
Signatures
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Glupteba payload 17 IoCs
Processes:
resource yara_rule behavioral1/memory/2472-134-0x0000000002FD0000-0x0000000003847000-memory.dmp family_glupteba behavioral1/memory/2472-136-0x0000000000400000-0x0000000000EA7000-memory.dmp family_glupteba behavioral1/memory/524-140-0x0000000000400000-0x0000000000EA7000-memory.dmp family_glupteba behavioral1/memory/1628-148-0x0000000000400000-0x0000000000EA7000-memory.dmp family_glupteba behavioral1/memory/1628-149-0x0000000000400000-0x0000000000EA7000-memory.dmp family_glupteba behavioral1/memory/1628-150-0x0000000000400000-0x0000000000EA7000-memory.dmp family_glupteba behavioral1/memory/1628-151-0x0000000000400000-0x0000000000EA7000-memory.dmp family_glupteba behavioral1/memory/1628-152-0x0000000000400000-0x0000000000EA7000-memory.dmp family_glupteba behavioral1/memory/1628-153-0x0000000000400000-0x0000000000EA7000-memory.dmp family_glupteba behavioral1/memory/1628-154-0x0000000000400000-0x0000000000EA7000-memory.dmp family_glupteba behavioral1/memory/1628-155-0x0000000000400000-0x0000000000EA7000-memory.dmp family_glupteba behavioral1/memory/1628-156-0x0000000000400000-0x0000000000EA7000-memory.dmp family_glupteba behavioral1/memory/1628-157-0x0000000000400000-0x0000000000EA7000-memory.dmp family_glupteba behavioral1/memory/1628-158-0x0000000000400000-0x0000000000EA7000-memory.dmp family_glupteba behavioral1/memory/1628-159-0x0000000000400000-0x0000000000EA7000-memory.dmp family_glupteba behavioral1/memory/1628-160-0x0000000000400000-0x0000000000EA7000-memory.dmp family_glupteba behavioral1/memory/1628-161-0x0000000000400000-0x0000000000EA7000-memory.dmp family_glupteba -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Executes dropped EXE 2 IoCs
Processes:
csrss.exeinjector.exepid process 1628 csrss.exe 2252 injector.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\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:
3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe -
Drops file in Windows directory 2 IoCs
Processes:
3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exedescription ioc process File opened for modification C:\Windows\rss 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe File created C:\Windows\rss\csrss.exe 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.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 3972 schtasks.exe 3340 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2391 = "Aleutian Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2451 = "Saint Pierre Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-752 = "Tonga Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-452 = "Caucasus Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.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" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-672 = "AUS Eastern Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-104 = "Central Brazilian Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2001 = "Cabo Verde Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.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" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-601 = "Taipei Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-81 = "Atlantic Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2341 = "Haiti Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-384 = "Namibia Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1502 = "Turkey Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2772 = "Omsk Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-442 = "Arabian Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-448 = "Azerbaijan Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-652 = "AUS Central Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-602 = "Taipei Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-122 = "SA Pacific Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2531 = "Chatham Islands Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3141 = "South Sudan Daylight Time" 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exeinjector.execsrss.exepid process 2472 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe 2472 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe 524 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe 524 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe 524 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe 524 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe 524 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe 524 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe 524 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe 524 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe 524 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe 524 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 1628 csrss.exe 1628 csrss.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 1628 csrss.exe 1628 csrss.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe 2252 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.execsrss.exedescription pid process Token: SeDebugPrivilege 2472 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Token: SeImpersonatePrivilege 2472 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe Token: SeSystemEnvironmentPrivilege 1628 csrss.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.execmd.execsrss.exedescription pid process target process PID 524 wrote to memory of 64 524 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe cmd.exe PID 524 wrote to memory of 64 524 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe cmd.exe PID 64 wrote to memory of 1696 64 cmd.exe netsh.exe PID 64 wrote to memory of 1696 64 cmd.exe netsh.exe PID 524 wrote to memory of 1628 524 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe csrss.exe PID 524 wrote to memory of 1628 524 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe csrss.exe PID 524 wrote to memory of 1628 524 3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe csrss.exe PID 1628 wrote to memory of 2252 1628 csrss.exe injector.exe PID 1628 wrote to memory of 2252 1628 csrss.exe injector.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\3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe"C:\Users\Admin\AppData\Local\Temp\3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.exe"C:\Users\Admin\AppData\Local\Temp\3a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89.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
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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)
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
MD59e72ce3c2bf266f37a62d4115a52b3f9
SHA1662a7f9cb179881ea1d683dbe340542fc21ef521
SHA2563a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89
SHA512ef7fcd444e4c5624fd798131991d78c90491b734f66b5c0b74a401f406a47865a7799688815145254d630066c172d2cc0d549d7707e260713dfd741a371e6154
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD59e72ce3c2bf266f37a62d4115a52b3f9
SHA1662a7f9cb179881ea1d683dbe340542fc21ef521
SHA2563a927642327ea0d858764834d4666a796d57834dd1e992a153da6198cf606e89
SHA512ef7fcd444e4c5624fd798131991d78c90491b734f66b5c0b74a401f406a47865a7799688815145254d630066c172d2cc0d549d7707e260713dfd741a371e6154
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memory/524-140-0x0000000000400000-0x0000000000EA7000-memory.dmpFilesize
10.7MB
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memory/1628-151-0x0000000000400000-0x0000000000EA7000-memory.dmpFilesize
10.7MB
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memory/1628-153-0x0000000000400000-0x0000000000EA7000-memory.dmpFilesize
10.7MB
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memory/1628-148-0x0000000000400000-0x0000000000EA7000-memory.dmpFilesize
10.7MB
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memory/1628-149-0x0000000000400000-0x0000000000EA7000-memory.dmpFilesize
10.7MB
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memory/1628-150-0x0000000000400000-0x0000000000EA7000-memory.dmpFilesize
10.7MB
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memory/1628-161-0x0000000000400000-0x0000000000EA7000-memory.dmpFilesize
10.7MB
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memory/1628-152-0x0000000000400000-0x0000000000EA7000-memory.dmpFilesize
10.7MB
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memory/1628-160-0x0000000000400000-0x0000000000EA7000-memory.dmpFilesize
10.7MB
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memory/1628-154-0x0000000000400000-0x0000000000EA7000-memory.dmpFilesize
10.7MB
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memory/1628-155-0x0000000000400000-0x0000000000EA7000-memory.dmpFilesize
10.7MB
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memory/1628-156-0x0000000000400000-0x0000000000EA7000-memory.dmpFilesize
10.7MB
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memory/1628-157-0x0000000000400000-0x0000000000EA7000-memory.dmpFilesize
10.7MB
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memory/1628-158-0x0000000000400000-0x0000000000EA7000-memory.dmpFilesize
10.7MB
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memory/1628-159-0x0000000000400000-0x0000000000EA7000-memory.dmpFilesize
10.7MB
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memory/2472-136-0x0000000000400000-0x0000000000EA7000-memory.dmpFilesize
10.7MB
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memory/2472-134-0x0000000002FD0000-0x0000000003847000-memory.dmpFilesize
8.5MB