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Analysis
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max time kernel
93s -
max time network
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platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
26/12/2024, 04:15
Static task
static1
Behavioral task
behavioral1
Sample
9b06af982da13a032e29a0493fb0645b821ab379e6fc69d1c755a8b9d4cfafb7.dll
Resource
win7-20241023-en
General
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Target
9b06af982da13a032e29a0493fb0645b821ab379e6fc69d1c755a8b9d4cfafb7.dll
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Size
513KB
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MD5
dc8bc6ccd74d328c9f641c282a287feb
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SHA1
a56f0a1acc9efb8c3e3de608bb8a2e840073f5c3
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SHA256
9b06af982da13a032e29a0493fb0645b821ab379e6fc69d1c755a8b9d4cfafb7
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SHA512
36cc0402fa295a6bcaa43da6305aa2ea1a8547bc6985b38bb465c53217c05b1819c28818533ef80c0b056b8d5bfc2bc66ac95683f4a11c78e05d29a8a9a8036f
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SSDEEP
6144:el2uHQRByruC6NFpkt4nuTU1d76R27lpiRHfdXluzGjJOCcoGFccMWDOJraQ3wBF:en40IOc/RqAzx5
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 1 IoCs
pid Process 3532 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/memory/3532-6-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3532-8-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3532-11-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3532-13-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3532-16-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3532-15-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3532-12-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3532-9-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3532-7-0x0000000000400000-0x000000000041A000-memory.dmp upx -
System Location Discovery: System Language Discovery 1 TTPs 3 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 Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language IEXPLORE.EXE -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31151948" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3824031126" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3820749628" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{0F573D17-C340-11EF-A4B7-D2BD7E71DA05} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31151948" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31151948" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "441951512" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3820749628" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 3532 rundll32mgr.exe 3532 rundll32mgr.exe 3532 rundll32mgr.exe 3532 rundll32mgr.exe 3532 rundll32mgr.exe 3532 rundll32mgr.exe 3532 rundll32mgr.exe 3532 rundll32mgr.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3532 rundll32mgr.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4528 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 4528 iexplore.exe 4528 iexplore.exe 4140 IEXPLORE.EXE 4140 IEXPLORE.EXE 4140 IEXPLORE.EXE 4140 IEXPLORE.EXE -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 3532 rundll32mgr.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 4592 wrote to memory of 4860 4592 rundll32.exe 84 PID 4592 wrote to memory of 4860 4592 rundll32.exe 84 PID 4592 wrote to memory of 4860 4592 rundll32.exe 84 PID 4860 wrote to memory of 3532 4860 rundll32.exe 85 PID 4860 wrote to memory of 3532 4860 rundll32.exe 85 PID 4860 wrote to memory of 3532 4860 rundll32.exe 85 PID 3532 wrote to memory of 4528 3532 rundll32mgr.exe 86 PID 3532 wrote to memory of 4528 3532 rundll32mgr.exe 86 PID 4528 wrote to memory of 4140 4528 iexplore.exe 87 PID 4528 wrote to memory of 4140 4528 iexplore.exe 87 PID 4528 wrote to memory of 4140 4528 iexplore.exe 87
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\9b06af982da13a032e29a0493fb0645b821ab379e6fc69d1c755a8b9d4cfafb7.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:4592 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\9b06af982da13a032e29a0493fb0645b821ab379e6fc69d1c755a8b9d4cfafb7.dll,#12⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4860 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3532 -
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"4⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4528 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4528 CREDAT:17410 /prefetch:25⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:4140
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize471B
MD573d8dd7eaa8896905e31f1960f51ece1
SHA1164e031603e75d95091220c5ff0d695547f6d3ae
SHA2569ff75ab638fe252bd0d04aea3f0ce38270ffc8df5db9399f9ea45aaef196dddc
SHA5124879585482992d7ea3ee02775b74592b06daab32a63dc7700dd4da40c45a524f3bcfc2beff928a85563f09ad0438be5b3e458bc3d0cd08ad146d416fec014a04
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD5ce915b29a6d9c42f34dd4bc94d2f2984
SHA1c6d55b06d3d0ca58062bad12073f1f5d6cf360db
SHA2565ffc9f1ec7b5d9ad4f2bf914e110b8a431c7449a86824436402e283bd9883fa6
SHA512956ed216bfdac62fcf8012cf02da2cb3be7e9df2366ae1e5f9210fec5aa533f1fe762d73dca066fac41c35024c3c9d4cd065f534df37dec9c45361911505855d
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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Filesize
88KB
MD5fe76e62c9c90a4bea8f2c464dc867719
SHA1f0935e8b6c22dea5c6e9d4127f5c10363deba541
SHA2565705c47b229c893f67741480ed5e3bce60597b2bb0dd755fb1f499a23888d7d6
SHA5127d6d5bfb10df493ffea7132807be417b5a283d34a1cd49042390b2b927691fd53ecf8eee459c727844395f34e4230b2cd85b38b7fb7df0a3638b244d0c3f6394