Analysis
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max time kernel
112s -
max time network
114s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
28/10/2024, 17:51
Static task
static1
Behavioral task
behavioral1
Sample
893913ff4387fefdd328d30c720c9b30ea7b34fb3c3d481cfba2791f2ade6a38N.dll
Resource
win7-20240903-en
General
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Target
893913ff4387fefdd328d30c720c9b30ea7b34fb3c3d481cfba2791f2ade6a38N.dll
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Size
240KB
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MD5
b78dcb131cb6e40c10a1bc4d43e9b8f0
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SHA1
3c5935fcde6ef32e939243482601b53e8994391e
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SHA256
893913ff4387fefdd328d30c720c9b30ea7b34fb3c3d481cfba2791f2ade6a38
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SHA512
79373831f69ea93aa755be4ecece1d77d4d9606cc54f489c8ea9141057f4ef52fdf9531668196e73d15f96ab3f6aee64804d8f0e0d66f06158b80c515a633304
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SSDEEP
6144:xKZp3KNjVGvYMPXyX7MGoFlNWeqm7GGJWnA:xCxKNjcHPyYD/We28qA
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 1 IoCs
pid Process 1340 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/1340-8-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/1340-14-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/1340-16-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/1340-11-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/1340-13-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/1340-9-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/1340-7-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/1340-6-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/1340-20-0x0000000000400000-0x000000000041A000-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-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "662659372" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31140194" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "436902891" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "665000997" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "662659372" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31140194" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\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 Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31140194" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{52D7D0C4-9555-11EF-BEF1-FAA11E730504} = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31140194" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "665000997" IEXPLORE.EXE -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 1340 rundll32mgr.exe 1340 rundll32mgr.exe 1340 rundll32mgr.exe 1340 rundll32mgr.exe 1340 rundll32mgr.exe 1340 rundll32mgr.exe 1340 rundll32mgr.exe 1340 rundll32mgr.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1340 rundll32mgr.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 5012 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 5012 iexplore.exe 5012 iexplore.exe 2520 IEXPLORE.EXE 2520 IEXPLORE.EXE 2520 IEXPLORE.EXE 2520 IEXPLORE.EXE -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 1340 rundll32mgr.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 832 wrote to memory of 812 832 rundll32.exe 84 PID 832 wrote to memory of 812 832 rundll32.exe 84 PID 832 wrote to memory of 812 832 rundll32.exe 84 PID 812 wrote to memory of 1340 812 rundll32.exe 85 PID 812 wrote to memory of 1340 812 rundll32.exe 85 PID 812 wrote to memory of 1340 812 rundll32.exe 85 PID 1340 wrote to memory of 5012 1340 rundll32mgr.exe 86 PID 1340 wrote to memory of 5012 1340 rundll32mgr.exe 86 PID 5012 wrote to memory of 2520 5012 iexplore.exe 87 PID 5012 wrote to memory of 2520 5012 iexplore.exe 87 PID 5012 wrote to memory of 2520 5012 iexplore.exe 87
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\893913ff4387fefdd328d30c720c9b30ea7b34fb3c3d481cfba2791f2ade6a38N.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:832 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\893913ff4387fefdd328d30c720c9b30ea7b34fb3c3d481cfba2791f2ade6a38N.dll,#12⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:812 -
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:1340 -
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:5012 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:5012 CREDAT:17410 /prefetch:25⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2520
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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
MD53c368a68cd68a8dbb557088be01b35c7
SHA144d06c93fecdb6bd5dbd84e565b68d4f95be42a1
SHA2566a1c84b1e2ae6a619c05fbc48f3441b0421ebab39aef41a3ebd22f0eb005143b
SHA5123d19c390990bb1d1a41060a36574ec856e2cb3ddbbf226c837ba4aa75c8c32b004e27b3cea29805558fd02a84a0889df95e0b71a64c15f12621173611bab8157
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD59bf3d9bb6c89d918c82a2b0c9a9e0133
SHA14b5173531d918ab33f40e18598ec68d280822112
SHA256d76404d59d9bc26aa99909c963cf16352f047a7b2d431c27bc971b558ea935e6
SHA512e1b0ff0054720a89cca8f57985a1bf6efe15c5ff8dcbaf25ee537fc91f7e4533de2e034c7a00d314ab6e70e9de60f1b977536099c30c2f93febe82b8b87dcad5
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Filesize
15KB
MD51a545d0052b581fbb2ab4c52133846bc
SHA162f3266a9b9925cd6d98658b92adec673cbe3dd3
SHA256557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1
SHA512bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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Filesize
121KB
MD5a93af43a801ff05f44ff97cb95cd886c
SHA17b19ee2905cc330bda0dfa0fb089085ebaacf5e3
SHA25650063bef074ba3c8708974907de35e78f60471f167f0934fa579a03d7ddef779
SHA5125620ee938a3a60bd63eb6df36f74e0e67d9fb881ab787d917db0a84e0e3741627105da957a4e45ab3056620717315566dd3a5641118be4ca6f6a6a6a9f1dbc8d