Analysis
-
max time kernel
92s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
17-11-2024 10:54
Behavioral task
behavioral1
Sample
f9a7463309aa2fc7c54bd24872563ac3f3ad1b06f38d534b630fa5c1a06916b3.dll
Resource
win7-20240903-en
General
-
Target
f9a7463309aa2fc7c54bd24872563ac3f3ad1b06f38d534b630fa5c1a06916b3.dll
-
Size
153KB
-
MD5
707774c51185e6c76b8594fc4db4e435
-
SHA1
511f24048f0efa9e8eabc147489d90345bca40d9
-
SHA256
f9a7463309aa2fc7c54bd24872563ac3f3ad1b06f38d534b630fa5c1a06916b3
-
SHA512
6de969b35f57c49809068e75b693088ceeaa2ef6c68f1d85e20ac21e96be040141453c2ef0b1cf3210fa151bf34d689a67601ff2aace39256dfba13b3a318132
-
SSDEEP
3072:oAy8YnjbmrBByW8rKui6f3SchqtQX0ES0l5lW+FH5/M1d7+M1:xy8y1WUqchcM0mHq
Malware Config
Signatures
-
Ramnit family
-
Executes dropped EXE 2 IoCs
Processes:
rundll32Srv.exeDesktopLayer.exepid Process 756 rundll32Srv.exe 1416 DesktopLayer.exe -
Drops file in System32 directory 1 IoCs
Processes:
rundll32.exedescription ioc Process File created C:\Windows\SysWOW64\rundll32Srv.exe rundll32.exe -
Processes:
resource yara_rule behavioral2/memory/4800-0-0x0000000010000000-0x0000000010083000-memory.dmp upx behavioral2/files/0x000c000000023b7e-3.dat upx behavioral2/memory/756-4-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/756-7-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/1416-11-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/1416-16-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/1416-14-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/4800-19-0x0000000010000000-0x0000000010083000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
Processes:
rundll32Srv.exedescription ioc Process File opened for modification C:\Program Files (x86)\Microsoft\pxA4FA.tmp rundll32Srv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe rundll32Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe rundll32Srv.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target Process procid_target 2616 4800 WerFault.exe 87 -
System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
IEXPLORE.EXErundll32.exerundll32Srv.exeDesktopLayer.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language IEXPLORE.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32Srv.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language DesktopLayer.exe -
Processes:
iexplore.exeIEXPLORE.EXEdescription ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31144159" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31144159" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31144159" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "438605927" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1478000476" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1467063530" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\"" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1467063530" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{82F6010B-A4D2-11EF-ADF2-E24E87F0D14E} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
DesktopLayer.exepid Process 1416 DesktopLayer.exe 1416 DesktopLayer.exe 1416 DesktopLayer.exe 1416 DesktopLayer.exe 1416 DesktopLayer.exe 1416 DesktopLayer.exe 1416 DesktopLayer.exe 1416 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid Process 4736 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
iexplore.exeIEXPLORE.EXEpid Process 4736 iexplore.exe 4736 iexplore.exe 2976 IEXPLORE.EXE 2976 IEXPLORE.EXE 2976 IEXPLORE.EXE 2976 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
rundll32.exerundll32.exerundll32Srv.exeDesktopLayer.exeiexplore.exedescription pid Process procid_target PID 4052 wrote to memory of 4800 4052 rundll32.exe 87 PID 4052 wrote to memory of 4800 4052 rundll32.exe 87 PID 4052 wrote to memory of 4800 4052 rundll32.exe 87 PID 4800 wrote to memory of 756 4800 rundll32.exe 88 PID 4800 wrote to memory of 756 4800 rundll32.exe 88 PID 4800 wrote to memory of 756 4800 rundll32.exe 88 PID 756 wrote to memory of 1416 756 rundll32Srv.exe 89 PID 756 wrote to memory of 1416 756 rundll32Srv.exe 89 PID 756 wrote to memory of 1416 756 rundll32Srv.exe 89 PID 1416 wrote to memory of 4736 1416 DesktopLayer.exe 91 PID 1416 wrote to memory of 4736 1416 DesktopLayer.exe 91 PID 4736 wrote to memory of 2976 4736 iexplore.exe 93 PID 4736 wrote to memory of 2976 4736 iexplore.exe 93 PID 4736 wrote to memory of 2976 4736 iexplore.exe 93
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\f9a7463309aa2fc7c54bd24872563ac3f3ad1b06f38d534b630fa5c1a06916b3.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:4052 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\f9a7463309aa2fc7c54bd24872563ac3f3ad1b06f38d534b630fa5c1a06916b3.dll,#12⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4800 -
C:\Windows\SysWOW64\rundll32Srv.exeC:\Windows\SysWOW64\rundll32Srv.exe3⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:756 -
C:\Program Files (x86)\Microsoft\DesktopLayer.exe"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"4⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1416 -
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"5⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4736 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4736 CREDAT:17410 /prefetch:26⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2976
-
-
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4800 -s 6803⤵
- Program crash
PID:2616
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4800 -ip 48001⤵PID:948
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize471B
MD567b3270e9ee2455fec6e20353842018a
SHA1afb768285ecc4fad9cb171c6ec0247e54a645746
SHA256a0e3067884f99355e97dd1979abe971940e233b6d8426ca2f9caedc7f5b25456
SHA512605ae45158f81452bfe383b3a8ec2407ce9c1bcd0d5b1372d13c870569105c764b89abf0a184fa3779770dba24e69b503ba7825026fcfd24fda06cce3ac9f3c5
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD5ccfb78465b4972b2451b834a77390d57
SHA1cc1379d74e0ef94e82c2835a7c7784417743980f
SHA25659c848870d67b6a0a92149ea10530d1dc3c521121bc40b8ea191da528a44f048
SHA5125b408bc9caeaa4e6e69d1052932358aea539e0afd0784c264f45264d048770225d2b757113bae1d2433ee368c9b0560d08c7c55ba550dbf769819c5b76df61b5
-
Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
-
Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a