Analysis
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max time kernel
94s -
max time network
112s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
25-12-2024 22:01
Static task
static1
Behavioral task
behavioral1
Sample
5c86ed4d75334f33e539af77769b2d9f2bf55a412686064bf1110106c83d9d3e.dll
Resource
win7-20241010-en
General
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Target
5c86ed4d75334f33e539af77769b2d9f2bf55a412686064bf1110106c83d9d3e.dll
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Size
124KB
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MD5
4605906f8cdd177f6c2b0ddd8b4cdb52
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SHA1
189fbe9a496a57cf8feb8b2ba84e2cffe9f1488a
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SHA256
5c86ed4d75334f33e539af77769b2d9f2bf55a412686064bf1110106c83d9d3e
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SHA512
0841da0d3a10f7784951f7ca0c0c0490445a08ee3c0bc710f4d800bc9caaebb6fde39d4406d5f82b8e5cab7a69ba769029a5eac41dda2c49d212bed322d3ccea
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SSDEEP
3072:Sj6tEosM7VmKeZ88Dkj7oR2SqwKJXtf5DGyVBQwIY6X47:SMcvZNDkYR2SqwK/AyVBQ9RI7
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 1 IoCs
pid Process 2400 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/2400-8-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/2400-7-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/2400-12-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/2400-15-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/2400-16-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/2400-14-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/2400-10-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/2400-9-0x0000000000400000-0x000000000041A000-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 Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{D3270B03-C30B-11EF-AF2A-EE6C25FCE24B} = "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\FullScreen = "no" 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\VersionManager 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 (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31151896" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31151896" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2813302496" 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\VersionManager\LastCheckForUpdateHighDateTime = "31151896" 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 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\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames 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 (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2813302496" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2817208109" 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 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\DomainSuggestion\NextUpdateDate = "441929077" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 2400 rundll32mgr.exe 2400 rundll32mgr.exe 2400 rundll32mgr.exe 2400 rundll32mgr.exe 2400 rundll32mgr.exe 2400 rundll32mgr.exe 2400 rundll32mgr.exe 2400 rundll32mgr.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2400 rundll32mgr.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3492 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 3492 iexplore.exe 3492 iexplore.exe 2476 IEXPLORE.EXE 2476 IEXPLORE.EXE 2476 IEXPLORE.EXE 2476 IEXPLORE.EXE -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 2400 rundll32mgr.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 2668 wrote to memory of 3840 2668 rundll32.exe 83 PID 2668 wrote to memory of 3840 2668 rundll32.exe 83 PID 2668 wrote to memory of 3840 2668 rundll32.exe 83 PID 3840 wrote to memory of 2400 3840 rundll32.exe 84 PID 3840 wrote to memory of 2400 3840 rundll32.exe 84 PID 3840 wrote to memory of 2400 3840 rundll32.exe 84 PID 2400 wrote to memory of 3492 2400 rundll32mgr.exe 85 PID 2400 wrote to memory of 3492 2400 rundll32mgr.exe 85 PID 3492 wrote to memory of 2476 3492 iexplore.exe 86 PID 3492 wrote to memory of 2476 3492 iexplore.exe 86 PID 3492 wrote to memory of 2476 3492 iexplore.exe 86
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\5c86ed4d75334f33e539af77769b2d9f2bf55a412686064bf1110106c83d9d3e.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2668 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\5c86ed4d75334f33e539af77769b2d9f2bf55a412686064bf1110106c83d9d3e.dll,#12⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3840 -
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:2400 -
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:3492 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3492 CREDAT:17410 /prefetch:25⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2476
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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
MD551a21e13256312a9105906fdc9d54c74
SHA16faa3a4f1c0e1fa7ea769fc6484008a6f718542c
SHA256d2a2b38cdcdbe7e57401b205ec2b79deb48f19bc6a4703aa203807854438d7d6
SHA512ae0e166040fd43b11a09163f4bf0da1f57466126038ea8335652bcd4e1e509e8e0d0dfdeae55b702804e23c649820f02af0f76c55ba2be9b1b2723dc3a236e32
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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Filesize
88KB
MD5fe76e62c9c90a4bea8f2c464dc867719
SHA1f0935e8b6c22dea5c6e9d4127f5c10363deba541
SHA2565705c47b229c893f67741480ed5e3bce60597b2bb0dd755fb1f499a23888d7d6
SHA5127d6d5bfb10df493ffea7132807be417b5a283d34a1cd49042390b2b927691fd53ecf8eee459c727844395f34e4230b2cd85b38b7fb7df0a3638b244d0c3f6394