Analysis
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max time kernel
149s -
max time network
126s -
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 19:23
Static task
static1
General
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Target
cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe
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Size
4.1MB
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MD5
d4e2c915b6daf7dbb958c2794c297611
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SHA1
21aeaf4d67e16b0a1b0f903d198eff988fbcd169
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SHA256
cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89
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SHA512
8f6b541d1973ef34e6097e2963501611a7cab53b15f041f6bce5d32b0501e5e9b4036d23107b699ddb318d467274aa7473d6a25419f618185f3843906aa801cc
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SSDEEP
98304:m5WAcVPIJkEpWqzo2CYKTP49xfEJicYRmST5XhK2k70cb:MCweEp5zo2C3TP49cicYoGdU2A0cb
Malware Config
Signatures
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Glupteba payload 16 IoCs
Processes:
resource yara_rule behavioral1/memory/4540-118-0x00000000050E0000-0x0000000005957000-memory.dmp family_glupteba behavioral1/memory/4540-119-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/3024-124-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2616-127-0x00000000056F0000-0x0000000005F67000-memory.dmp family_glupteba behavioral1/memory/2616-133-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2616-134-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2616-135-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2616-136-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2616-137-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2616-138-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2616-139-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2616-140-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2616-141-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2616-142-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2616-143-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/2616-150-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba -
Processes:
cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe = "0" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Executes dropped EXE 3 IoCs
Processes:
csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exepid process 2616 csrss.exe 2060 injector.exe 3416 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/3416-149-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/3416-151-0x0000000000400000-0x0000000000C25000-memory.dmp upx -
Processes:
cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe = "0" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3346939869-2835594282-3775165920-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\S-1-5-21-3346939869-2835594282-3775165920-1000\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:
cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe -
Drops file in Windows directory 2 IoCs
Processes:
cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exedescription ioc process File created C:\Windows\rss\csrss.exe cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe File opened for modification C:\Windows\rss cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.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 4708 schtasks.exe 2696 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exenetsh.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-242 = "Samoa Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-671 = "AUS Eastern Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-632 = "Tokyo Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-221 = "Alaskan Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2531 = "Chatham Islands Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-352 = "FLE Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.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" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-672 = "AUS Eastern Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-631 = "Tokyo Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-441 = "Arabian Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.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" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-182 = "Mountain Standard Time (Mexico)" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2371 = "Easter Island Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2792 = "Novosibirsk Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.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" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2752 = "Tomsk Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-105 = "Central Brazilian Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Key created \REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Control netsh.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2512 = "Lord Howe Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-742 = "New Zealand Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-691 = "Tasmania Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-42 = "E. South America Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-652 = "AUS Central Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.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" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1841 = "Russia TZ 4 Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.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" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000 csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-41 = "E. South America Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2771 = "Omsk Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)" cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.execd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exeinjector.execsrss.exepid process 4540 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe 4540 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe 3024 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe 3024 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe 3024 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe 3024 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe 3024 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe 3024 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe 3024 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe 3024 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe 3024 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe 3024 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2616 csrss.exe 2616 csrss.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2616 csrss.exe 2616 csrss.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe 2060 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.execsrss.exedescription pid process Token: SeDebugPrivilege 4540 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Token: SeImpersonatePrivilege 4540 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe Token: SeSystemEnvironmentPrivilege 2616 csrss.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.execmd.execsrss.exedescription pid process target process PID 3024 wrote to memory of 3728 3024 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe cmd.exe PID 3024 wrote to memory of 3728 3024 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe cmd.exe PID 3728 wrote to memory of 3792 3728 cmd.exe netsh.exe PID 3728 wrote to memory of 3792 3728 cmd.exe netsh.exe PID 3024 wrote to memory of 2616 3024 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe csrss.exe PID 3024 wrote to memory of 2616 3024 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe csrss.exe PID 3024 wrote to memory of 2616 3024 cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe csrss.exe PID 2616 wrote to memory of 2060 2616 csrss.exe injector.exe PID 2616 wrote to memory of 2060 2616 csrss.exe injector.exe PID 2616 wrote to memory of 3416 2616 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 2616 wrote to memory of 3416 2616 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 2616 wrote to memory of 3416 2616 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\cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe"C:\Users\Admin\AppData\Local\Temp\cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4540 -
C:\Users\Admin\AppData\Local\Temp\cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.exe"C:\Users\Admin\AppData\Local\Temp\cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89.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:3024 -
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:3728 -
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
- Modifies data under HKEY_USERS
PID:3792 -
C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2616 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:4708 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:4648
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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:2060 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:2696 -
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exeC:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe4⤵
- Executes dropped EXE
PID:3416
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
MD5d4e2c915b6daf7dbb958c2794c297611
SHA121aeaf4d67e16b0a1b0f903d198eff988fbcd169
SHA256cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89
SHA5128f6b541d1973ef34e6097e2963501611a7cab53b15f041f6bce5d32b0501e5e9b4036d23107b699ddb318d467274aa7473d6a25419f618185f3843906aa801cc
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD5d4e2c915b6daf7dbb958c2794c297611
SHA121aeaf4d67e16b0a1b0f903d198eff988fbcd169
SHA256cd6574c586fb16baedd4db4af297823d76c224fb260a7d0dbe05045817791a89
SHA5128f6b541d1973ef34e6097e2963501611a7cab53b15f041f6bce5d32b0501e5e9b4036d23107b699ddb318d467274aa7473d6a25419f618185f3843906aa801cc
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memory/2616-137-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/2616-140-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/2616-133-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/2616-134-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/2616-135-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/2616-136-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/2616-150-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/2616-138-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/2616-139-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/2616-127-0x00000000056F0000-0x0000000005F67000-memory.dmpFilesize
8.5MB
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memory/2616-141-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/2616-142-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/2616-143-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/3024-124-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/3416-149-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/3416-151-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/4540-119-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/4540-118-0x00000000050E0000-0x0000000005957000-memory.dmpFilesize
8.5MB