Analysis
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max time kernel
96s -
max time network
113s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
19-12-2024 02:18
Static task
static1
Behavioral task
behavioral1
Sample
5415e199eb03c2853043259353c0c8004d73cf39bc307c2cb44149735a67214dN.dll
Resource
win7-20240729-en
General
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Target
5415e199eb03c2853043259353c0c8004d73cf39bc307c2cb44149735a67214dN.dll
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Size
289KB
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MD5
f5850b4e99e56d3b5d770bbed9612360
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SHA1
3daf10ae37ddd9bc97980e5f7b6a3372c7c8fea1
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SHA256
5415e199eb03c2853043259353c0c8004d73cf39bc307c2cb44149735a67214d
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SHA512
7eab147d565d2b66da3df6dcafe4319c9d249c8794f96366dade199423559f737c1f7d908ea61e7dc6be861cb13110726bc9c3a50206b7d44269180d276b4e13
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SSDEEP
6144:PCIGPj038tAgFMldWNX+DubRkLZ2+KcAfv5CSkS7:Uj038t/FMldW4DTZ2+KccC9S7
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 1 IoCs
pid Process 3704 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/3704-15-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3704-17-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3704-14-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3704-13-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3704-12-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3704-10-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3704-9-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3704-8-0x0000000000400000-0x000000000041A000-memory.dmp upx -
Program crash 1 IoCs
pid pid_target Process procid_target 3712 3488 WerFault.exe 83 -
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 Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{8255884E-BDAF-11EF-AF2A-FAA11E730504} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31150524" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31150524" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31150524" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "441339672" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (data) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1456613087" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1456613087" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1461926092" IEXPLORE.EXE -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 3704 rundll32mgr.exe 3704 rundll32mgr.exe 3704 rundll32mgr.exe 3704 rundll32mgr.exe 3704 rundll32mgr.exe 3704 rundll32mgr.exe 3704 rundll32mgr.exe 3704 rundll32mgr.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3704 rundll32mgr.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4924 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 4924 iexplore.exe 4924 iexplore.exe 4964 IEXPLORE.EXE 4964 IEXPLORE.EXE 4964 IEXPLORE.EXE 4964 IEXPLORE.EXE -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 3704 rundll32mgr.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 2416 wrote to memory of 3488 2416 rundll32.exe 83 PID 2416 wrote to memory of 3488 2416 rundll32.exe 83 PID 2416 wrote to memory of 3488 2416 rundll32.exe 83 PID 3488 wrote to memory of 3704 3488 rundll32.exe 84 PID 3488 wrote to memory of 3704 3488 rundll32.exe 84 PID 3488 wrote to memory of 3704 3488 rundll32.exe 84 PID 3704 wrote to memory of 4924 3704 rundll32mgr.exe 86 PID 3704 wrote to memory of 4924 3704 rundll32mgr.exe 86 PID 4924 wrote to memory of 4964 4924 iexplore.exe 88 PID 4924 wrote to memory of 4964 4924 iexplore.exe 88 PID 4924 wrote to memory of 4964 4924 iexplore.exe 88
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\5415e199eb03c2853043259353c0c8004d73cf39bc307c2cb44149735a67214dN.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2416 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\5415e199eb03c2853043259353c0c8004d73cf39bc307c2cb44149735a67214dN.dll,#12⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3488 -
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:3704 -
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:4924 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4924 CREDAT:17410 /prefetch:25⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:4964
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3488 -s 6083⤵
- Program crash
PID:3712
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3488 -ip 34881⤵PID:4452
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
MD55e99ec80bb4e60401972729dff7db4f2
SHA1a68a2f47614d8afd1b7afd1e0620d32cd393e2c0
SHA2566ac6e0c6b415580d28c082f0e59f45289379890a167c088a557d3e2578b424e0
SHA5127670c7e91ae9555458275effc570e107c9ae43b02e65f9200b773f9139dfe228faf55f5c4ac5d9d713d0231e16c129baf1c289534b42ac7b4d042f370240c654
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD5b2aa45f623926b85e0f56ae10c80d660
SHA1eaea3693d301b43a70ea9eb4b620a8d5602b2ae3
SHA2563ecd204886f46d6dcc6d0b4043e2045e0ec1ee1e87bd83132694ad4cd528562c
SHA5124f9a46459ce1d6f974dbcd7b5aecf5d32db0b52d2ccb5a5d076a5109470d4084310394865be66fa7dbc07ed613c677da9c64f28ec659a88b45f1258d5a967595
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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Filesize
121KB
MD5ee77f2a82f0ada3db67768b4fb688c71
SHA15165e088484d73d5100a92bcfab9f6ea367407fe
SHA25671793760f681181db3e67b9f9231b1dc67dd896b431f4b13d920d876fb8edbb9
SHA51240e7a4dfedbbc8e936684b3bf498d2d47b05b2fe8af13f21e89dca5fac8aa1d9caa354120c4d0308295b35f9f6a9a2c2fd0eae488b33e665cb27431f3b2148f1