Analysis
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max time kernel
150s -
max time network
146s -
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 21:35
Static task
static1
General
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Target
dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe
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Size
4.1MB
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MD5
3d732483a45627df58f7f18cee1764bb
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SHA1
d17471e28a047725b15f367cd5d127b1b9347f4f
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SHA256
dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca
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SHA512
973f16eb46a4e12cb987adf4277309b81e2aebcc9de00f2551e9a22ca3ce7d90a7bbea423c2608d7930a349514f111356f89d4305b3d5d1aceddc5e01c51d5dc
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SSDEEP
98304:hsga/db54hpOTZGP3wo0ZMln15HTLEPxA/IhAljsmJ:hsga/1gj04zaA/IoX
Malware Config
Signatures
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Glupteba payload 17 IoCs
Processes:
resource yara_rule behavioral1/memory/1736-134-0x0000000003070000-0x00000000038E7000-memory.dmp family_glupteba behavioral1/memory/1736-135-0x0000000000400000-0x0000000000EA6000-memory.dmp family_glupteba behavioral1/memory/3764-141-0x0000000000400000-0x0000000000EA6000-memory.dmp family_glupteba behavioral1/memory/444-148-0x0000000000400000-0x0000000000EA6000-memory.dmp family_glupteba behavioral1/memory/444-149-0x0000000000400000-0x0000000000EA6000-memory.dmp family_glupteba behavioral1/memory/444-150-0x0000000000400000-0x0000000000EA6000-memory.dmp family_glupteba behavioral1/memory/444-151-0x0000000000400000-0x0000000000EA6000-memory.dmp family_glupteba behavioral1/memory/444-152-0x0000000000400000-0x0000000000EA6000-memory.dmp family_glupteba behavioral1/memory/444-153-0x0000000000400000-0x0000000000EA6000-memory.dmp family_glupteba behavioral1/memory/444-154-0x0000000000400000-0x0000000000EA6000-memory.dmp family_glupteba behavioral1/memory/444-155-0x0000000000400000-0x0000000000EA6000-memory.dmp family_glupteba behavioral1/memory/444-156-0x0000000000400000-0x0000000000EA6000-memory.dmp family_glupteba behavioral1/memory/444-157-0x0000000000400000-0x0000000000EA6000-memory.dmp family_glupteba behavioral1/memory/444-158-0x0000000000400000-0x0000000000EA6000-memory.dmp family_glupteba behavioral1/memory/444-159-0x0000000000400000-0x0000000000EA6000-memory.dmp family_glupteba behavioral1/memory/444-160-0x0000000000400000-0x0000000000EA6000-memory.dmp family_glupteba behavioral1/memory/444-161-0x0000000000400000-0x0000000000EA6000-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 444 csrss.exe 3712 injector.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.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\"" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.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:
dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe -
Drops file in Windows directory 2 IoCs
Processes:
dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exedescription ioc process File opened for modification C:\Windows\rss dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe File created C:\Windows\rss\csrss.exe dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.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 4116 schtasks.exe 3496 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2771 = "Omsk Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2181 = "Astrakhan Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-371 = "Jerusalem Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2751 = "Tomsk Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2142 = "Transbaikal Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-51 = "Greenland Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.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" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.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" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2491 = "Aus Central W. Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2872 = "Magallanes Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1022 = "Bangladesh Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-452 = "Caucasus Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-362 = "GTB Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-601 = "Taipei Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1662 = "Bahia Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-672 = "AUS Eastern Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-892 = "Morocco Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-181 = "Mountain Daylight Time (Mexico)" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-352 = "FLE Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2892 = "Sudan Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-691 = "Tasmania Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1871 = "Russia TZ 7 Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2391 = "Aleutian Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2512 = "Lord Howe Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-251 = "Dateline Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-11 = "Azores Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1971 = "Belarus Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2432 = "Cuba Standard Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1801 = "Line Islands Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time" dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exedd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exeinjector.execsrss.exepid process 1736 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe 1736 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe 3764 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe 3764 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe 3764 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe 3764 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe 3764 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe 3764 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe 3764 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe 3764 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe 3764 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe 3764 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 444 csrss.exe 444 csrss.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 444 csrss.exe 444 csrss.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe 3712 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.execsrss.exedescription pid process Token: SeDebugPrivilege 1736 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Token: SeImpersonatePrivilege 1736 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe Token: SeSystemEnvironmentPrivilege 444 csrss.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.execmd.execsrss.exedescription pid process target process PID 3764 wrote to memory of 2076 3764 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe cmd.exe PID 3764 wrote to memory of 2076 3764 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe cmd.exe PID 2076 wrote to memory of 440 2076 cmd.exe netsh.exe PID 2076 wrote to memory of 440 2076 cmd.exe netsh.exe PID 3764 wrote to memory of 444 3764 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe csrss.exe PID 3764 wrote to memory of 444 3764 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe csrss.exe PID 3764 wrote to memory of 444 3764 dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe csrss.exe PID 444 wrote to memory of 3712 444 csrss.exe injector.exe PID 444 wrote to memory of 3712 444 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\dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe"C:\Users\Admin\AppData\Local\Temp\dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.exe"C:\Users\Admin\AppData\Local\Temp\dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca.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
MD53d732483a45627df58f7f18cee1764bb
SHA1d17471e28a047725b15f367cd5d127b1b9347f4f
SHA256dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca
SHA512973f16eb46a4e12cb987adf4277309b81e2aebcc9de00f2551e9a22ca3ce7d90a7bbea423c2608d7930a349514f111356f89d4305b3d5d1aceddc5e01c51d5dc
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD53d732483a45627df58f7f18cee1764bb
SHA1d17471e28a047725b15f367cd5d127b1b9347f4f
SHA256dd8b33404210c45e8bbc47b625cddb26fcc67dc6fbbdfef9ba773fd95d840dca
SHA512973f16eb46a4e12cb987adf4277309b81e2aebcc9de00f2551e9a22ca3ce7d90a7bbea423c2608d7930a349514f111356f89d4305b3d5d1aceddc5e01c51d5dc
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memory/444-151-0x0000000000400000-0x0000000000EA6000-memory.dmpFilesize
10.6MB
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memory/444-154-0x0000000000400000-0x0000000000EA6000-memory.dmpFilesize
10.6MB
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memory/444-161-0x0000000000400000-0x0000000000EA6000-memory.dmpFilesize
10.6MB
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memory/444-148-0x0000000000400000-0x0000000000EA6000-memory.dmpFilesize
10.6MB
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memory/444-149-0x0000000000400000-0x0000000000EA6000-memory.dmpFilesize
10.6MB
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memory/444-150-0x0000000000400000-0x0000000000EA6000-memory.dmpFilesize
10.6MB
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memory/444-160-0x0000000000400000-0x0000000000EA6000-memory.dmpFilesize
10.6MB
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memory/444-152-0x0000000000400000-0x0000000000EA6000-memory.dmpFilesize
10.6MB
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memory/444-153-0x0000000000400000-0x0000000000EA6000-memory.dmpFilesize
10.6MB
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memory/444-159-0x0000000000400000-0x0000000000EA6000-memory.dmpFilesize
10.6MB
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memory/444-155-0x0000000000400000-0x0000000000EA6000-memory.dmpFilesize
10.6MB
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memory/444-156-0x0000000000400000-0x0000000000EA6000-memory.dmpFilesize
10.6MB
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memory/444-157-0x0000000000400000-0x0000000000EA6000-memory.dmpFilesize
10.6MB
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memory/444-158-0x0000000000400000-0x0000000000EA6000-memory.dmpFilesize
10.6MB
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memory/1736-134-0x0000000003070000-0x00000000038E7000-memory.dmpFilesize
8.5MB
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memory/1736-135-0x0000000000400000-0x0000000000EA6000-memory.dmpFilesize
10.6MB
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memory/3764-141-0x0000000000400000-0x0000000000EA6000-memory.dmpFilesize
10.6MB