Analysis
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max time kernel
145s -
max time network
144s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
29-03-2023 13:52
Static task
static1
General
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Target
d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe
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Size
4.1MB
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MD5
9a606d6b37d4a07f7d6b21580b1b96de
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SHA1
771d4c9ac75f9fd57550fb71765061e715493ebd
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SHA256
d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8
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SHA512
896590f24976f29dca3dcca8bf855e8d62f3259289259d7f4bda082bc722af447b53d9c78d9e38aa1b3033634b81f4d5a7c286475b7840aba34e84d2f1622173
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SSDEEP
98304:Mn7DsKGaqVohMV3iM4rojo/8eRQfWle7+NTITxGbeKkQCvx:83B+EyiMgojz7JTxc/k/vx
Malware Config
Signatures
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Glupteba payload 16 IoCs
Processes:
resource yara_rule behavioral1/memory/4016-134-0x0000000002E10000-0x0000000003687000-memory.dmp family_glupteba behavioral1/memory/4016-135-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/4648-141-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/688-148-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/688-149-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/688-150-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/688-151-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/688-152-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/688-153-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/688-154-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/688-155-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/688-156-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/688-157-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/688-158-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/688-159-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/688-166-0x0000000000400000-0x0000000000C91000-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 688 csrss.exe 2928 injector.exe 4584 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/4584-165-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/4584-167-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/4584-169-0x0000000000400000-0x0000000000C25000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\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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Legitimate hosting services abused for malware hosting/C2 1 TTPs
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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:
d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exedescription ioc process File opened (read-only) \??\VBoxMiniRdrDN d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe -
Drops file in Windows directory 2 IoCs
Processes:
d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exedescription ioc process File opened for modification C:\Windows\rss d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe File created C:\Windows\rss\csrss.exe d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 3540 4648 WerFault.exe d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.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 2140 schtasks.exe 1492 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-81 = "Atlantic Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.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" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1022 = "Bangladesh Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2772 = "Omsk Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-449 = "Azerbaijan Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-631 = "Tokyo Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.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" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-932 = "Coordinated Universal Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-331 = "E. Europe Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-448 = "Azerbaijan Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-181 = "Mountain Daylight Time (Mexico)" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-291 = "Central European Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.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" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2942 = "Sao Tome Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2511 = "Lord Howe Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2792 = "Novosibirsk Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.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" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-931 = "Coordinated Universal Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-71 = "Newfoundland Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1502 = "Turkey Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2891 = "Sudan Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1801 = "Line Islands Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2161 = "Altai Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-442 = "Arabian Standard Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.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" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time" d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exed4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exeinjector.execsrss.exepid process 4016 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe 4016 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe 4648 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe 4648 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe 4648 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe 4648 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe 4648 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe 4648 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe 4648 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe 4648 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe 4648 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe 4648 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 688 csrss.exe 688 csrss.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 688 csrss.exe 688 csrss.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe 2928 injector.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.execsrss.exedescription pid process Token: SeDebugPrivilege 4016 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Token: SeImpersonatePrivilege 4016 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe Token: SeSystemEnvironmentPrivilege 688 csrss.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.execmd.execsrss.exedescription pid process target process PID 4648 wrote to memory of 416 4648 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe cmd.exe PID 4648 wrote to memory of 416 4648 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe cmd.exe PID 416 wrote to memory of 4776 416 cmd.exe netsh.exe PID 416 wrote to memory of 4776 416 cmd.exe netsh.exe PID 4648 wrote to memory of 688 4648 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe csrss.exe PID 4648 wrote to memory of 688 4648 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe csrss.exe PID 4648 wrote to memory of 688 4648 d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe csrss.exe PID 688 wrote to memory of 2928 688 csrss.exe injector.exe PID 688 wrote to memory of 2928 688 csrss.exe injector.exe PID 688 wrote to memory of 4584 688 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 688 wrote to memory of 4584 688 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 688 wrote to memory of 4584 688 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\d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe"C:\Users\Admin\AppData\Local\Temp\d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.exe"C:\Users\Admin\AppData\Local\Temp\d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8.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.
- Modifies data under HKEY_USERS
- 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 4648 -s 6723⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4648 -ip 46481⤵
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
MD59a606d6b37d4a07f7d6b21580b1b96de
SHA1771d4c9ac75f9fd57550fb71765061e715493ebd
SHA256d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8
SHA512896590f24976f29dca3dcca8bf855e8d62f3259289259d7f4bda082bc722af447b53d9c78d9e38aa1b3033634b81f4d5a7c286475b7840aba34e84d2f1622173
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C:\Windows\rss\csrss.exeFilesize
4.1MB
MD59a606d6b37d4a07f7d6b21580b1b96de
SHA1771d4c9ac75f9fd57550fb71765061e715493ebd
SHA256d4276c33705feadeced60a642af66f4170e754864d822b9768f5b6f4d965aba8
SHA512896590f24976f29dca3dcca8bf855e8d62f3259289259d7f4bda082bc722af447b53d9c78d9e38aa1b3033634b81f4d5a7c286475b7840aba34e84d2f1622173
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memory/688-153-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/688-166-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/688-150-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/688-151-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/688-152-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/688-149-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/688-154-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/688-155-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/688-156-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/688-157-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/688-158-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/688-159-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/688-148-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4016-134-0x0000000002E10000-0x0000000003687000-memory.dmpFilesize
8.5MB
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memory/4016-135-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
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memory/4584-165-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/4584-167-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/4584-169-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
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memory/4648-141-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB