Analysis
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max time kernel
150s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
28-03-2023 20:07
Static task
static1
General
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Target
8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe
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Size
4.1MB
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MD5
32af05e8ceea412df35ed3098fc76308
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SHA1
e160d6563c832cffd9f42f98216e8038fde94b43
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SHA256
8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3
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SHA512
3c75b022f793ebec6978d37e158f23d962988a51e3955c4f1abd222fe4f1f993c83745858aec4239a110ce9fa9d9159d1db31274291bfebe0220966a0025a0a1
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SSDEEP
98304:kELwTlvdgEX2NpXI1CvrZ0wYkLx78mDXz//wDHa17+P6a+DsJxVO2PF/:kEaAEXAsCv10rkLuUz//Wa1iPqsJxVOi
Malware Config
Signatures
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Glupteba payload 18 IoCs
Processes:
resource yara_rule behavioral1/memory/1520-134-0x0000000005100000-0x0000000005977000-memory.dmp family_glupteba behavioral1/memory/1520-135-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/1520-136-0x0000000005100000-0x0000000005977000-memory.dmp family_glupteba behavioral1/memory/2132-138-0x0000000004FA0000-0x0000000005817000-memory.dmp family_glupteba behavioral1/memory/2132-143-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/4220-150-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/4220-151-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/4220-152-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/4220-153-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/4220-154-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/4220-155-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/4220-156-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/4220-157-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/4220-158-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/4220-159-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/4220-160-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/4220-161-0x0000000000400000-0x0000000002F4D000-memory.dmp family_glupteba behavioral1/memory/4220-162-0x0000000000400000-0x0000000002F4D000-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 4220 csrss.exe 4860 injector.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\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:
8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe -
Drops file in Windows directory 2 IoCs
Processes:
8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exedescription ioc process File opened for modification C:\Windows\rss 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe File created C:\Windows\rss\csrss.exe 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.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 4536 schtasks.exe 3712 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3141 = "South Sudan Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2892 = "Sudan Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1662 = "Bahia Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2432 = "Cuba Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1932 = "Russia TZ 11 Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-371 = "Jerusalem Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1722 = "Libya Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1912 = "Russia TZ 10 Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-448 = "Azerbaijan Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-572 = "China Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2942 = "Sao Tome Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2771 = "Omsk Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-732 = "Fiji Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-51 = "Greenland Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-71 = "Newfoundland Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2872 = "Magallanes Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.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" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.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" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-202 = "US Mountain Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2511 = "Lord Howe Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1042 = "Ulaanbaatar Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-81 = "Atlantic Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.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" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.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" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1822 = "Russia TZ 1 Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-122 = "SA Pacific Standard Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time" 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exeinjector.execsrss.exepid process 1520 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe 1520 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe 2132 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe 2132 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe 2132 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe 2132 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe 2132 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe 2132 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe 2132 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe 2132 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe 2132 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe 2132 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4220 csrss.exe 4220 csrss.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4220 csrss.exe 4220 csrss.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe 4860 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.execsrss.exedescription pid process Token: SeDebugPrivilege 1520 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Token: SeImpersonatePrivilege 1520 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe Token: SeSystemEnvironmentPrivilege 4220 csrss.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.execmd.execsrss.exedescription pid process target process PID 2132 wrote to memory of 2156 2132 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe cmd.exe PID 2132 wrote to memory of 2156 2132 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe cmd.exe PID 2156 wrote to memory of 4852 2156 cmd.exe netsh.exe PID 2156 wrote to memory of 4852 2156 cmd.exe netsh.exe PID 2132 wrote to memory of 4220 2132 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe csrss.exe PID 2132 wrote to memory of 4220 2132 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe csrss.exe PID 2132 wrote to memory of 4220 2132 8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe csrss.exe PID 4220 wrote to memory of 4860 4220 csrss.exe injector.exe PID 4220 wrote to memory of 4860 4220 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\8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe"C:\Users\Admin\AppData\Local\Temp\8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.exe"C:\Users\Admin\AppData\Local\Temp\8c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3.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
MD532af05e8ceea412df35ed3098fc76308
SHA1e160d6563c832cffd9f42f98216e8038fde94b43
SHA2568c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3
SHA5123c75b022f793ebec6978d37e158f23d962988a51e3955c4f1abd222fe4f1f993c83745858aec4239a110ce9fa9d9159d1db31274291bfebe0220966a0025a0a1
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD532af05e8ceea412df35ed3098fc76308
SHA1e160d6563c832cffd9f42f98216e8038fde94b43
SHA2568c03086c7f4a307bc6ce966c3e90352f284e39d8e0d8fd4fdef20d8531f4ddd3
SHA5123c75b022f793ebec6978d37e158f23d962988a51e3955c4f1abd222fe4f1f993c83745858aec4239a110ce9fa9d9159d1db31274291bfebe0220966a0025a0a1
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memory/1520-134-0x0000000005100000-0x0000000005977000-memory.dmpFilesize
8.5MB
-
memory/1520-135-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/1520-136-0x0000000005100000-0x0000000005977000-memory.dmpFilesize
8.5MB
-
memory/2132-138-0x0000000004FA0000-0x0000000005817000-memory.dmpFilesize
8.5MB
-
memory/2132-143-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/4220-151-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/4220-150-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/4220-152-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/4220-153-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/4220-154-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/4220-155-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/4220-156-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/4220-157-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/4220-158-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/4220-159-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/4220-160-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
-
memory/4220-161-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB
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memory/4220-162-0x0000000000400000-0x0000000002F4D000-memory.dmpFilesize
43.3MB