Analysis
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max time kernel
143s -
max time network
137s -
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 18:15
Static task
static1
Behavioral task
behavioral1
Sample
CA69CC6680515603FF76C0D9F7FF98AF.exe
Resource
win7-20230220-en
General
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Target
CA69CC6680515603FF76C0D9F7FF98AF.exe
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Size
4.1MB
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MD5
ca69cc6680515603ff76c0d9f7ff98af
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SHA1
a838890818f67c9a0eba8f3d15c04fcd6f7a3bb8
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SHA256
44af15077c839bdc975ebd81f2bd2188c0ced84ea9b2facbda807eb3d05747d0
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SHA512
dc6b9c7f56d7a0085e62e7779337b70ab9b8700d0ea580bf8455361dc17c69654bb0ab68ff7cd89f260140a3c1aa43d2161d3d4a0856ab6d8d5c90102cf7e61b
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SSDEEP
98304:zFkiC6Dxkh193M37JyWckqXzjOES7r9ojcGWjOKol:RkiCcxkJM34WcfNSNSUsl
Malware Config
Signatures
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Glupteba payload 16 IoCs
Processes:
resource yara_rule behavioral2/memory/2124-134-0x00000000050D0000-0x0000000005947000-memory.dmp family_glupteba behavioral2/memory/2124-135-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral2/memory/1444-141-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral2/memory/4336-148-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral2/memory/4336-149-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral2/memory/4336-150-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral2/memory/4336-151-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral2/memory/4336-152-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral2/memory/4336-153-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral2/memory/4336-154-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral2/memory/4336-155-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral2/memory/4336-156-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral2/memory/4336-157-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral2/memory/4336-158-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral2/memory/4336-161-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba behavioral2/memory/4336-166-0x0000000000400000-0x0000000002F4E000-memory.dmp family_glupteba -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Executes dropped EXE 3 IoCs
Processes:
csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exepid process 4336 csrss.exe 5116 injector.exe 2152 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 behavioral2/memory/2152-165-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral2/memory/2152-167-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral2/memory/2152-169-0x0000000000400000-0x0000000000C25000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
CA69CC6680515603FF76C0D9F7FF98AF.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\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:
CA69CC6680515603FF76C0D9F7FF98AF.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN CA69CC6680515603FF76C0D9F7FF98AF.exe -
Drops file in Windows directory 2 IoCs
Processes:
CA69CC6680515603FF76C0D9F7FF98AF.exedescription ioc process File opened for modification C:\Windows\rss CA69CC6680515603FF76C0D9F7FF98AF.exe File created C:\Windows\rss\csrss.exe CA69CC6680515603FF76C0D9F7FF98AF.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 4156 1444 WerFault.exe CA69CC6680515603FF76C0D9F7FF98AF.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Modifies data under HKEY_USERS 64 IoCs
Processes:
CA69CC6680515603FF76C0D9F7FF98AF.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2841 = "Saratov Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-691 = "Tasmania Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-362 = "GTB Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2392 = "Aleutian Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2451 = "Saint Pierre Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1502 = "Turkey Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-342 = "Egypt Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.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" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1971 = "Belarus Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-892 = "Morocco Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3142 = "South Sudan Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.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" CA69CC6680515603FF76C0D9F7FF98AF.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" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.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" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2142 = "Transbaikal Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2181 = "Astrakhan Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.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" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-391 = "Arab Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1721 = "Libya Daylight Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time" CA69CC6680515603FF76C0D9F7FF98AF.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
CA69CC6680515603FF76C0D9F7FF98AF.exeCA69CC6680515603FF76C0D9F7FF98AF.exeinjector.execsrss.exepid process 2124 CA69CC6680515603FF76C0D9F7FF98AF.exe 2124 CA69CC6680515603FF76C0D9F7FF98AF.exe 1444 CA69CC6680515603FF76C0D9F7FF98AF.exe 1444 CA69CC6680515603FF76C0D9F7FF98AF.exe 1444 CA69CC6680515603FF76C0D9F7FF98AF.exe 1444 CA69CC6680515603FF76C0D9F7FF98AF.exe 1444 CA69CC6680515603FF76C0D9F7FF98AF.exe 1444 CA69CC6680515603FF76C0D9F7FF98AF.exe 1444 CA69CC6680515603FF76C0D9F7FF98AF.exe 1444 CA69CC6680515603FF76C0D9F7FF98AF.exe 1444 CA69CC6680515603FF76C0D9F7FF98AF.exe 1444 CA69CC6680515603FF76C0D9F7FF98AF.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 4336 csrss.exe 4336 csrss.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 4336 csrss.exe 4336 csrss.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe 5116 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
CA69CC6680515603FF76C0D9F7FF98AF.execsrss.exedescription pid process Token: SeDebugPrivilege 2124 CA69CC6680515603FF76C0D9F7FF98AF.exe Token: SeImpersonatePrivilege 2124 CA69CC6680515603FF76C0D9F7FF98AF.exe Token: SeSystemEnvironmentPrivilege 4336 csrss.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
CA69CC6680515603FF76C0D9F7FF98AF.execmd.execsrss.exedescription pid process target process PID 1444 wrote to memory of 4136 1444 CA69CC6680515603FF76C0D9F7FF98AF.exe cmd.exe PID 1444 wrote to memory of 4136 1444 CA69CC6680515603FF76C0D9F7FF98AF.exe cmd.exe PID 4136 wrote to memory of 5080 4136 cmd.exe netsh.exe PID 4136 wrote to memory of 5080 4136 cmd.exe netsh.exe PID 1444 wrote to memory of 4336 1444 CA69CC6680515603FF76C0D9F7FF98AF.exe csrss.exe PID 1444 wrote to memory of 4336 1444 CA69CC6680515603FF76C0D9F7FF98AF.exe csrss.exe PID 1444 wrote to memory of 4336 1444 CA69CC6680515603FF76C0D9F7FF98AF.exe csrss.exe PID 4336 wrote to memory of 5116 4336 csrss.exe injector.exe PID 4336 wrote to memory of 5116 4336 csrss.exe injector.exe PID 4336 wrote to memory of 2152 4336 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 4336 wrote to memory of 2152 4336 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 4336 wrote to memory of 2152 4336 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\CA69CC6680515603FF76C0D9F7FF98AF.exe"C:\Users\Admin\AppData\Local\Temp\CA69CC6680515603FF76C0D9F7FF98AF.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\CA69CC6680515603FF76C0D9F7FF98AF.exe"C:\Users\Admin\AppData\Local\Temp\CA69CC6680515603FF76C0D9F7FF98AF.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)
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C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exeC:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe4⤵
- Executes dropped EXE
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn "csrss" /f5⤵
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn "ScheduledUpdate" /f5⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1444 -s 8203⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1444 -ip 14441⤵
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\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\NtQuerySystemInformationHook.dllFilesize
99KB
MD509031a062610d77d685c9934318b4170
SHA1880f744184e7774f3d14c1bb857e21cc7fe89a6d
SHA256778bd69af403df3c4e074c31b3850d71bf0e64524bea4272a802ca9520b379dd
SHA5129a276e1f0f55d35f2bf38eb093464f7065bdd30a660e6d1c62eed5e76d1fb2201567b89d9ae65d2d89dc99b142159e36fb73be8d5e08252a975d50544a7cda27
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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
MD5ca69cc6680515603ff76c0d9f7ff98af
SHA1a838890818f67c9a0eba8f3d15c04fcd6f7a3bb8
SHA25644af15077c839bdc975ebd81f2bd2188c0ced84ea9b2facbda807eb3d05747d0
SHA512dc6b9c7f56d7a0085e62e7779337b70ab9b8700d0ea580bf8455361dc17c69654bb0ab68ff7cd89f260140a3c1aa43d2161d3d4a0856ab6d8d5c90102cf7e61b
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD5ca69cc6680515603ff76c0d9f7ff98af
SHA1a838890818f67c9a0eba8f3d15c04fcd6f7a3bb8
SHA25644af15077c839bdc975ebd81f2bd2188c0ced84ea9b2facbda807eb3d05747d0
SHA512dc6b9c7f56d7a0085e62e7779337b70ab9b8700d0ea580bf8455361dc17c69654bb0ab68ff7cd89f260140a3c1aa43d2161d3d4a0856ab6d8d5c90102cf7e61b
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memory/1444-141-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
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memory/2124-134-0x00000000050D0000-0x0000000005947000-memory.dmpFilesize
8.5MB
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memory/2124-135-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
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memory/2152-169-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/2152-167-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/2152-165-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/4336-151-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
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memory/4336-155-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
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memory/4336-156-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
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memory/4336-157-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
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memory/4336-158-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
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memory/4336-154-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
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memory/4336-161-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
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memory/4336-153-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
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memory/4336-152-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
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memory/4336-166-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
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memory/4336-150-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
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memory/4336-149-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB
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memory/4336-148-0x0000000000400000-0x0000000002F4E000-memory.dmpFilesize
43.3MB