Analysis
-
max time kernel
140s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
25-01-2023 11:00
Static task
static1
General
-
Target
4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe
-
Size
4.2MB
-
MD5
d5f38c43c2b69a76a8cf277d55f8c23f
-
SHA1
2a20856f4ebcfbcd32acc990fa1f8656c93cc609
-
SHA256
4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb
-
SHA512
74bf35d58c79e84b80879c9e0a11ddd80c894bd73a586a18bbd4955fa29a689ce620836af5ffccb915b1acaa379f563552e8153b1b7a9ed5536ff97d2db06fb2
-
SSDEEP
98304:+QH9DqCOTnfsMTHs/SU0koWPkt/OOGKiXMDp1msQL+QOKVb07V0R:+Kjkf7THwfIxGKCMFkZRq0R
Malware Config
Signatures
-
Suspicious use of NtCreateUserProcessOtherParentProcess 6 IoCs
Processes:
svchost.exedescription pid process target process PID 372 created 4800 372 svchost.exe 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe PID 372 created 3640 372 svchost.exe csrss.exe PID 372 created 3640 372 svchost.exe csrss.exe PID 372 created 3640 372 svchost.exe csrss.exe PID 372 created 3732 372 svchost.exe f801950a962ddba14caaa44bf084b55c.exe PID 372 created 3732 372 svchost.exe f801950a962ddba14caaa44bf084b55c.exe -
Executes dropped EXE 3 IoCs
Processes:
csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exepid process 3640 csrss.exe 5068 injector.exe 3732 f801950a962ddba14caaa44bf084b55c.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
-
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/3732-157-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/3732-161-0x0000000000400000-0x0000000000C25000-memory.dmp upx behavioral1/memory/3732-163-0x0000000000400000-0x0000000000C25000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\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.
-
Legitimate hosting services abused for malware hosting/C2 1 TTPs
-
Drops file in Windows directory 2 IoCs
Processes:
4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exedescription ioc process File opened for modification C:\Windows\rss 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe File created C:\Windows\rss\csrss.exe 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.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 3016 schtasks.exe 3232 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.execsrss.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-932 = "Coordinated Universal Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2341 = "Haiti Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.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,-1021 = "Bangladesh Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-742 = "New Zealand Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.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" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1042 = "Ulaanbaatar Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-272 = "Greenwich Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.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" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-672 = "AUS Eastern Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-104 = "Central Brazilian Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.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" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2872 = "Magallanes Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.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" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-451 = "Caucasus Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2161 = "Altai Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1872 = "Russia TZ 7 Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2392 = "Aleutian Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1861 = "Russia TZ 6 Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-842 = "Argentina Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-602 = "Taipei Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed csrss.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-571 = "China Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-11 = "Azores Daylight Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.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" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-982 = "Kamchatka Standard Time" 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exeinjector.execsrss.exepid process 4800 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe 4800 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe 1268 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe 1268 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe 1268 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe 1268 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe 1268 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe 1268 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe 1268 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe 1268 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe 1268 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe 1268 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 3640 csrss.exe 3640 csrss.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 3640 csrss.exe 3640 csrss.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe 5068 injector.exe -
Suspicious use of AdjustPrivilegeToken 25 IoCs
Processes:
4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exesvchost.execsrss.exedescription pid process Token: SeDebugPrivilege 4800 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Token: SeImpersonatePrivilege 4800 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe Token: SeTcbPrivilege 372 svchost.exe Token: SeTcbPrivilege 372 svchost.exe Token: SeBackupPrivilege 372 svchost.exe Token: SeRestorePrivilege 372 svchost.exe Token: SeBackupPrivilege 372 svchost.exe Token: SeRestorePrivilege 372 svchost.exe Token: SeBackupPrivilege 372 svchost.exe Token: SeRestorePrivilege 372 svchost.exe Token: SeBackupPrivilege 372 svchost.exe Token: SeRestorePrivilege 372 svchost.exe Token: SeSystemEnvironmentPrivilege 3640 csrss.exe Token: SeBackupPrivilege 372 svchost.exe Token: SeRestorePrivilege 372 svchost.exe Token: SeBackupPrivilege 372 svchost.exe Token: SeRestorePrivilege 372 svchost.exe Token: SeBackupPrivilege 372 svchost.exe Token: SeRestorePrivilege 372 svchost.exe Token: SeBackupPrivilege 372 svchost.exe Token: SeRestorePrivilege 372 svchost.exe Token: SeBackupPrivilege 372 svchost.exe Token: SeRestorePrivilege 372 svchost.exe Token: SeBackupPrivilege 372 svchost.exe Token: SeRestorePrivilege 372 svchost.exe -
Suspicious use of WriteProcessMemory 25 IoCs
Processes:
svchost.exe4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.execmd.execsrss.exedescription pid process target process PID 372 wrote to memory of 1268 372 svchost.exe 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe PID 372 wrote to memory of 1268 372 svchost.exe 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe PID 372 wrote to memory of 1268 372 svchost.exe 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe PID 1268 wrote to memory of 216 1268 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe cmd.exe PID 1268 wrote to memory of 216 1268 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe cmd.exe PID 216 wrote to memory of 3480 216 cmd.exe netsh.exe PID 216 wrote to memory of 3480 216 cmd.exe netsh.exe PID 1268 wrote to memory of 3640 1268 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe csrss.exe PID 1268 wrote to memory of 3640 1268 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe csrss.exe PID 1268 wrote to memory of 3640 1268 4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe csrss.exe PID 372 wrote to memory of 3016 372 svchost.exe schtasks.exe PID 372 wrote to memory of 3016 372 svchost.exe schtasks.exe PID 372 wrote to memory of 4600 372 svchost.exe schtasks.exe PID 372 wrote to memory of 4600 372 svchost.exe schtasks.exe PID 3640 wrote to memory of 5068 3640 csrss.exe injector.exe PID 3640 wrote to memory of 5068 3640 csrss.exe injector.exe PID 372 wrote to memory of 3232 372 svchost.exe schtasks.exe PID 372 wrote to memory of 3232 372 svchost.exe schtasks.exe PID 3640 wrote to memory of 3732 3640 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 3640 wrote to memory of 3732 3640 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 3640 wrote to memory of 3732 3640 csrss.exe f801950a962ddba14caaa44bf084b55c.exe PID 372 wrote to memory of 2356 372 svchost.exe schtasks.exe PID 372 wrote to memory of 2356 372 svchost.exe schtasks.exe PID 372 wrote to memory of 3776 372 svchost.exe schtasks.exe PID 372 wrote to memory of 3776 372 svchost.exe schtasks.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe"C:\Users\Admin\AppData\Local\Temp\4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
C:\Users\Admin\AppData\Local\Temp\4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe"C:\Users\Admin\AppData\Local\Temp\4f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb.exe"2⤵
- Adds Run key to start application
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
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
-
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
-
C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
-
C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵
-
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
-
C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
-
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exeC:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe4⤵
- Executes dropped EXE
-
C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn "csrss" /f5⤵
-
C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn "ScheduledUpdate" /f5⤵
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s seclogon1⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exeFilesize
3.2MB
MD5f801950a962ddba14caaa44bf084b55c
SHA17cadc9076121297428442785536ba0df2d4ae996
SHA256c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f
SHA5124183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5
-
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exeFilesize
3.2MB
MD5f801950a962ddba14caaa44bf084b55c
SHA17cadc9076121297428442785536ba0df2d4ae996
SHA256c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f
SHA5124183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5
-
C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dllFilesize
99KB
MD509031a062610d77d685c9934318b4170
SHA1880f744184e7774f3d14c1bb857e21cc7fe89a6d
SHA256778bd69af403df3c4e074c31b3850d71bf0e64524bea4272a802ca9520b379dd
SHA5129a276e1f0f55d35f2bf38eb093464f7065bdd30a660e6d1c62eed5e76d1fb2201567b89d9ae65d2d89dc99b142159e36fb73be8d5e08252a975d50544a7cda27
-
C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeFilesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
-
C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeFilesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
-
C:\Windows\rss\csrss.exeFilesize
4.2MB
MD5d5f38c43c2b69a76a8cf277d55f8c23f
SHA12a20856f4ebcfbcd32acc990fa1f8656c93cc609
SHA2564f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb
SHA51274bf35d58c79e84b80879c9e0a11ddd80c894bd73a586a18bbd4955fa29a689ce620836af5ffccb915b1acaa379f563552e8153b1b7a9ed5536ff97d2db06fb2
-
C:\Windows\rss\csrss.exeFilesize
4.2MB
MD5d5f38c43c2b69a76a8cf277d55f8c23f
SHA12a20856f4ebcfbcd32acc990fa1f8656c93cc609
SHA2564f4661c95f28894e1d10ea647930a38b05a47d8a5d601bc4803b912574076ffb
SHA51274bf35d58c79e84b80879c9e0a11ddd80c894bd73a586a18bbd4955fa29a689ce620836af5ffccb915b1acaa379f563552e8153b1b7a9ed5536ff97d2db06fb2
-
memory/216-137-0x0000000000000000-mapping.dmp
-
memory/1268-140-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/1268-135-0x0000000000000000-mapping.dmp
-
memory/1268-138-0x0000000002917000-0x0000000002D00000-memory.dmpFilesize
3.9MB
-
memory/1268-144-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/2356-159-0x0000000000000000-mapping.dmp
-
memory/3016-145-0x0000000000000000-mapping.dmp
-
memory/3232-152-0x0000000000000000-mapping.dmp
-
memory/3480-139-0x0000000000000000-mapping.dmp
-
memory/3640-148-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/3640-141-0x0000000000000000-mapping.dmp
-
memory/3640-147-0x0000000003000000-0x00000000033E9000-memory.dmpFilesize
3.9MB
-
memory/3640-153-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/3640-158-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/3732-161-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
-
memory/3732-154-0x0000000000000000-mapping.dmp
-
memory/3732-163-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
-
memory/3732-157-0x0000000000400000-0x0000000000C25000-memory.dmpFilesize
8.1MB
-
memory/3776-160-0x0000000000000000-mapping.dmp
-
memory/4600-146-0x0000000000000000-mapping.dmp
-
memory/4800-136-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/4800-134-0x0000000000400000-0x0000000000C91000-memory.dmpFilesize
8.6MB
-
memory/4800-133-0x0000000002ED0000-0x0000000003747000-memory.dmpFilesize
8.5MB
-
memory/4800-132-0x0000000002ADC000-0x0000000002EC5000-memory.dmpFilesize
3.9MB
-
memory/5068-149-0x0000000000000000-mapping.dmp