Analysis
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max time kernel
93s -
max time network
144s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
02-01-2025 08:12
Static task
static1
Behavioral task
behavioral1
Sample
a441f8aa39e46ed5f8e7815a075920a4b0f0314a177dcee600bfcf00f31b81c8.dll
Resource
win7-20240729-en
General
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Target
a441f8aa39e46ed5f8e7815a075920a4b0f0314a177dcee600bfcf00f31b81c8.dll
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Size
220KB
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MD5
8b43a65547a6e6dacae765c72bb8b255
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SHA1
ae062d5e967c6e31799a8ee64c00ba7b76fe0ef2
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SHA256
a441f8aa39e46ed5f8e7815a075920a4b0f0314a177dcee600bfcf00f31b81c8
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SHA512
13a4f5a0f29c96b33e66b55171ce50df35ee999449ce4615feec561611287c9dfe9de1a4b311c3810c467f120bfd1a5cb0cfcf24a90d884fff32be35cc5f467b
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SSDEEP
3072:5n2PxxtGWfQLBvBt0M1qCWzJP0ruTTBaClHpspom7ffrAmpO:hmILBf0dJ5TTBZbspom7bXc
Malware Config
Signatures
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Modifies firewall policy service 3 TTPs 4 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\rundll32.exe = "C:\\Windows\\SysWOW64\\rundll32.exe:*:enabled:@shell32.dll,-1" rundll32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List rundll32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile rundll32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications rundll32.exe -
Blocklisted process makes network request 1 IoCs
flow pid Process 7 2404 rundll32.exe -
Executes dropped EXE 1 IoCs
pid Process 1416 rundll32mgr.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe -
resource yara_rule behavioral2/files/0x000c000000023b81-3.dat upx behavioral2/memory/1416-4-0x0000000000400000-0x0000000000464000-memory.dmp upx behavioral2/memory/1416-14-0x0000000000400000-0x0000000000464000-memory.dmp upx -
Program crash 1 IoCs
pid pid_target Process procid_target 100 1416 WerFault.exe 84 -
System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32mgr.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1416 rundll32mgr.exe 1416 rundll32mgr.exe -
Suspicious behavior: MapViewOfSection 64 IoCs
pid Process 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe 1416 rundll32mgr.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1416 rundll32mgr.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 2544 wrote to memory of 2404 2544 rundll32.exe 83 PID 2544 wrote to memory of 2404 2544 rundll32.exe 83 PID 2544 wrote to memory of 2404 2544 rundll32.exe 83 PID 2404 wrote to memory of 1416 2404 rundll32.exe 84 PID 2404 wrote to memory of 1416 2404 rundll32.exe 84 PID 2404 wrote to memory of 1416 2404 rundll32.exe 84 PID 1416 wrote to memory of 624 1416 rundll32mgr.exe 5 PID 1416 wrote to memory of 624 1416 rundll32mgr.exe 5 PID 1416 wrote to memory of 624 1416 rundll32mgr.exe 5 PID 1416 wrote to memory of 624 1416 rundll32mgr.exe 5 PID 1416 wrote to memory of 624 1416 rundll32mgr.exe 5 PID 1416 wrote to memory of 624 1416 rundll32mgr.exe 5 PID 1416 wrote to memory of 676 1416 rundll32mgr.exe 7 PID 1416 wrote to memory of 676 1416 rundll32mgr.exe 7 PID 1416 wrote to memory of 676 1416 rundll32mgr.exe 7 PID 1416 wrote to memory of 676 1416 rundll32mgr.exe 7 PID 1416 wrote to memory of 676 1416 rundll32mgr.exe 7 PID 1416 wrote to memory of 676 1416 rundll32mgr.exe 7 PID 1416 wrote to memory of 788 1416 rundll32mgr.exe 8 PID 1416 wrote to memory of 788 1416 rundll32mgr.exe 8 PID 1416 wrote to memory of 788 1416 rundll32mgr.exe 8 PID 1416 wrote to memory of 788 1416 rundll32mgr.exe 8 PID 1416 wrote to memory of 788 1416 rundll32mgr.exe 8 PID 1416 wrote to memory of 788 1416 rundll32mgr.exe 8 PID 1416 wrote to memory of 796 1416 rundll32mgr.exe 9 PID 1416 wrote to memory of 796 1416 rundll32mgr.exe 9 PID 1416 wrote to memory of 796 1416 rundll32mgr.exe 9 PID 1416 wrote to memory of 796 1416 rundll32mgr.exe 9 PID 1416 wrote to memory of 796 1416 rundll32mgr.exe 9 PID 1416 wrote to memory of 796 1416 rundll32mgr.exe 9 PID 1416 wrote to memory of 804 1416 rundll32mgr.exe 10 PID 1416 wrote to memory of 804 1416 rundll32mgr.exe 10 PID 1416 wrote to memory of 804 1416 rundll32mgr.exe 10 PID 1416 wrote to memory of 804 1416 rundll32mgr.exe 10 PID 1416 wrote to memory of 804 1416 rundll32mgr.exe 10 PID 1416 wrote to memory of 804 1416 rundll32mgr.exe 10 PID 1416 wrote to memory of 904 1416 rundll32mgr.exe 11 PID 1416 wrote to memory of 904 1416 rundll32mgr.exe 11 PID 1416 wrote to memory of 904 1416 rundll32mgr.exe 11 PID 1416 wrote to memory of 904 1416 rundll32mgr.exe 11 PID 1416 wrote to memory of 904 1416 rundll32mgr.exe 11 PID 1416 wrote to memory of 904 1416 rundll32mgr.exe 11 PID 1416 wrote to memory of 964 1416 rundll32mgr.exe 12 PID 1416 wrote to memory of 964 1416 rundll32mgr.exe 12 PID 1416 wrote to memory of 964 1416 rundll32mgr.exe 12 PID 1416 wrote to memory of 964 1416 rundll32mgr.exe 12 PID 1416 wrote to memory of 964 1416 rundll32mgr.exe 12 PID 1416 wrote to memory of 964 1416 rundll32mgr.exe 12 PID 1416 wrote to memory of 380 1416 rundll32mgr.exe 13 PID 1416 wrote to memory of 380 1416 rundll32mgr.exe 13 PID 1416 wrote to memory of 380 1416 rundll32mgr.exe 13 PID 1416 wrote to memory of 380 1416 rundll32mgr.exe 13 PID 1416 wrote to memory of 380 1416 rundll32mgr.exe 13 PID 1416 wrote to memory of 380 1416 rundll32mgr.exe 13 PID 1416 wrote to memory of 760 1416 rundll32mgr.exe 14 PID 1416 wrote to memory of 760 1416 rundll32mgr.exe 14 PID 1416 wrote to memory of 760 1416 rundll32mgr.exe 14 PID 1416 wrote to memory of 760 1416 rundll32mgr.exe 14 PID 1416 wrote to memory of 760 1416 rundll32mgr.exe 14 PID 1416 wrote to memory of 760 1416 rundll32mgr.exe 14 PID 1416 wrote to memory of 1032 1416 rundll32mgr.exe 15 PID 1416 wrote to memory of 1032 1416 rundll32mgr.exe 15 PID 1416 wrote to memory of 1032 1416 rundll32mgr.exe 15 PID 1416 wrote to memory of 1032 1416 rundll32mgr.exe 15
Processes
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C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:624
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C:\Windows\system32\fontdrvhost.exe"fontdrvhost.exe"2⤵PID:788
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C:\Windows\system32\dwm.exe"dwm.exe"2⤵PID:380
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C:\Windows\system32\lsass.exeC:\Windows\system32\lsass.exe1⤵PID:676
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C:\Windows\system32\fontdrvhost.exe"fontdrvhost.exe"1⤵PID:796
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k DcomLaunch -p1⤵PID:804
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C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding2⤵PID:3084
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C:\Windows\system32\DllHost.exeC:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}2⤵PID:3868
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C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca2⤵PID:3980
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding2⤵PID:384
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C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe"C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca2⤵PID:2848
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding2⤵PID:4004
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding2⤵PID:2176
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C:\Windows\system32\SppExtComObj.exeC:\Windows\system32\SppExtComObj.exe -Embedding2⤵PID:4948
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C:\Windows\system32\DllHost.exeC:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}2⤵PID:844
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C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe" -ServerName:InputApp.AppX9jnwykgrccxc8by3hsrsh07r423xzvav.mca2⤵PID:2664
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C:\Windows\system32\backgroundTaskHost.exe"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca2⤵PID:2816
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k RPCSS -p1⤵PID:904
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k DcomLaunch -p -s LSM1⤵PID:964
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s gpsvc1⤵PID:760
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService1⤵PID:1032
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s lmhosts1⤵PID:1052
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s TimeBrokerSvc1⤵PID:1060
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNoNetwork -p1⤵PID:1104
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule1⤵PID:1212
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C:\Windows\system32\taskhostw.exetaskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}2⤵PID:2656
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C:\Windows\system32\MusNotification.exeC:\Windows\system32\MusNotification.exe2⤵PID:5016
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s EventLog1⤵PID:1232
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s ProfSvc1⤵PID:1280
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -p -s DispBrokerDesktopSvc1⤵PID:1340
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -p -s nsi1⤵PID:1388
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -p -s EventSystem1⤵PID:1464
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p -s Themes1⤵PID:1476
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s UserManager1⤵PID:1524
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C:\Windows\system32\sihost.exesihost.exe2⤵PID:2468
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s Dhcp1⤵PID:1532
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s SENS1⤵PID:1676
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p -s NlaSvc1⤵PID:1696
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s AudioEndpointBuilder1⤵PID:1752
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalService -p -s netprofm1⤵PID:1816
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p1⤵PID:1844
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k appmodel -p -s StateRepository1⤵PID:1956
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k NetworkService -p -s Dnscache1⤵PID:2020
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p1⤵PID:2032
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p -s ShellHWDetection1⤵PID:2052
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C:\Windows\System32\spoolsv.exeC:\Windows\System32\spoolsv.exe1⤵PID:2136
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s Winmgmt1⤵PID:2144
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNoNetworkFirewall -p1⤵PID:2200
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -s RmSvc1⤵PID:2308
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p -s LanmanWorkstation1⤵PID:2316
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc1⤵PID:2480
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k NetworkServiceNetworkRestricted -p -s PolicyAgent1⤵PID:2592
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s IKEEXT1⤵PID:2600
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k NetworkService -p -s CryptSvc1⤵PID:2692
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s TokenBroker1⤵PID:2772
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s LanmanServer1⤵PID:2792
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C:\Windows\sysmon.exeC:\Windows\sysmon.exe1⤵PID:2836
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s TrkWks1⤵PID:2856
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s WpnService1⤵PID:2864
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -p -s CDPSvc1⤵PID:3444
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:3568
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\a441f8aa39e46ed5f8e7815a075920a4b0f0314a177dcee600bfcf00f31b81c8.dll,#12⤵
- Suspicious use of WriteProcessMemory
PID:2544 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\a441f8aa39e46ed5f8e7815a075920a4b0f0314a177dcee600bfcf00f31b81c8.dll,#13⤵
- Modifies firewall policy service
- Blocklisted process makes network request
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2404 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe4⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1416 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1416 -s 2845⤵
- Program crash
PID:100
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc1⤵PID:3696
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s wlidsvc1⤵PID:4872
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s StorSvc1⤵PID:4816
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p -s SSDPSRV1⤵PID:924
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s WinHttpAutoProxySvc1⤵PID:2896
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalService -p -s LicenseManager1⤵PID:1132
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C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe"C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service1⤵PID:3712
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s NgcCtnrSvc1⤵PID:4708
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1416 -ip 14161⤵PID:4540
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
159KB
MD58703c6aeb2e62da71e50db9698d91e35
SHA1cafceda794c5b1976b46a5d39949137aba8dc9e6
SHA256c3a332de99e2b195bbb3e5927f8ee4217f968bc373f8c499db45db0b3388d47d
SHA51248e45868929fcacfa06c5078de2e54d32cfab80e5dd00036b37f3d55b33269f0ee82f46b68e7a6adc2ec9aecad8672393a77602c1b995133876c2c4e6d15229a