Analysis
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max time kernel
94s -
max time network
142s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
23-11-2024 22:53
Behavioral task
behavioral1
Sample
5a16ffe0019bc40609705dcbc9ecf625262fecbab23485058103fa8278835fb3.dll
Resource
win7-20240903-en
General
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Target
5a16ffe0019bc40609705dcbc9ecf625262fecbab23485058103fa8278835fb3.dll
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Size
103KB
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MD5
389d74c8cd9c43504fb81ae0d3d4af17
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SHA1
06d0d361a87dd230d0ac53d6452f31ca9fca3a0f
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SHA256
5a16ffe0019bc40609705dcbc9ecf625262fecbab23485058103fa8278835fb3
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SHA512
734a05483ea8e8d0d07063ba2f591bd30da7ba4bc689a8011881f9c03a50a9135c68066c6a67903cd92b2b97aa2d1bc1b5e90a09f4450f66860a1630c043b5e7
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SSDEEP
3072:R/QXImmdzgxNJYiGoy7W12gxL3/ovHbb:R/cbfNJY++W4gpvA
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 2 IoCs
Processes:
regsvr32Srv.exeDesktopLayer.exepid Process 624 regsvr32Srv.exe 3936 DesktopLayer.exe -
Drops file in System32 directory 1 IoCs
Processes:
regsvr32.exedescription ioc Process File created C:\Windows\SysWOW64\regsvr32Srv.exe regsvr32.exe -
Processes:
resource yara_rule behavioral2/memory/3508-0-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/files/0x000c000000023b37-3.dat upx behavioral2/memory/624-4-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/624-6-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/3936-16-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/624-15-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/3936-12-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
Processes:
regsvr32Srv.exedescription ioc Process File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe regsvr32Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe regsvr32Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\px9D0B.tmp regsvr32Srv.exe -
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:
regsvr32Srv.exeDesktopLayer.exeIEXPLORE.EXEregsvr32.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regsvr32Srv.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language DesktopLayer.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language IEXPLORE.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regsvr32.exe -
Processes:
iexplore.exeIEXPLORE.EXEdescription ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31145466" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "439167415" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (data) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2831111457" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31145466" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2834392780" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2831111457" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{D45F53D7-A9ED-11EF-91C3-622000771059} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31145466" IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe -
Modifies registry class 23 IoCs
Processes:
regsvr32.exedescription ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7F9DE066-BF3D-4C17-86B7-33E43EBEAEF0} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AED61C3B-C504-49D2-B06C-00F424D0D93E} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AED61C3B-C504-49D2-B06C-00F424D0D93E}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6B6B24E9-1941-4F20-BDC8-0CE6D1577AD2}\ = "Protection Property Page" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{7F9DE066-BF3D-4C17-86B7-33E43EBEAEF0} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{7F9DE066-BF3D-4C17-86B7-33E43EBEAEF0}\CLSID = "{7F9DE066-BF3D-4C17-86B7-33E43EBEAEF0}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7F9DE066-BF3D-4C17-86B7-33E43EBEAEF0}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\5a16ffe0019bc40609705dcbc9ecf625262fecbab23485058103fa8278835fb3.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AED61C3B-C504-49D2-B06C-00F424D0D93E}\InprocServer32\ThreadingModel = "Both" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6B6B24E9-1941-4F20-BDC8-0CE6D1577AD2} regsvr32.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{7F9DE066-BF3D-4C17-86B7-33E43EBEAEF0}\FilterData = 0200000000002000020000000000000030706933000000000000000001000000000000000000000030747933000000006000000070000000317069330800000000000000010000000000000000000000307479330000000060000000700000007669647300001000800000aa00389b7100000000000000000000000000000000 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{33D9A760-90C8-11D0-BD43-00A0C911CE86}\Instance\Alparysoft Lossless Codec\FriendlyName = "Alparysoft Lossless Codec" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{33D9A760-90C8-11D0-BD43-00A0C911CE86}\Instance\Alparysoft Lossless Codec\CLSID = "{7F9DE066-BF3D-4C17-86B7-33E43EBEAEF0}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7F9DE066-BF3D-4C17-86B7-33E43EBEAEF0}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7F9DE066-BF3D-4C17-86B7-33E43EBEAEF0}\InprocServer32\ThreadingModel = "Both" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6B6B24E9-1941-4F20-BDC8-0CE6D1577AD2}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\5a16ffe0019bc40609705dcbc9ecf625262fecbab23485058103fa8278835fb3.dll" regsvr32.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{33D9A760-90C8-11D0-BD43-00A0C911CE86}\Instance\Alparysoft Lossless Codec\FilterData = 0200000000002000020000000000000030706933000000000000000001000000000000000000000030747933000000006000000070000000317069330800000000000000010000000000000000000000307479330000000060000000700000007669647300001000800000aa00389b7100000000000000000000000000000000 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7F9DE066-BF3D-4C17-86B7-33E43EBEAEF0}\ = "Alparysoft Lossless Codec" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AED61C3B-C504-49D2-B06C-00F424D0D93E}\ = "Alparysoft Lossless Codec Properties" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AED61C3B-C504-49D2-B06C-00F424D0D93E}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\5a16ffe0019bc40609705dcbc9ecf625262fecbab23485058103fa8278835fb3.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6B6B24E9-1941-4F20-BDC8-0CE6D1577AD2}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6B6B24E9-1941-4F20-BDC8-0CE6D1577AD2}\InprocServer32\ThreadingModel = "Both" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{7F9DE066-BF3D-4C17-86B7-33E43EBEAEF0}\FriendlyName = "Alparysoft Lossless Codec" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{33D9A760-90C8-11D0-BD43-00A0C911CE86}\Instance\Alparysoft Lossless Codec regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
DesktopLayer.exepid Process 3936 DesktopLayer.exe 3936 DesktopLayer.exe 3936 DesktopLayer.exe 3936 DesktopLayer.exe 3936 DesktopLayer.exe 3936 DesktopLayer.exe 3936 DesktopLayer.exe 3936 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid Process 5012 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
iexplore.exeIEXPLORE.EXEpid Process 5012 iexplore.exe 5012 iexplore.exe 2416 IEXPLORE.EXE 2416 IEXPLORE.EXE 2416 IEXPLORE.EXE 2416 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
regsvr32.exeregsvr32.exeregsvr32Srv.exeDesktopLayer.exeiexplore.exedescription pid Process procid_target PID 1312 wrote to memory of 3508 1312 regsvr32.exe 83 PID 1312 wrote to memory of 3508 1312 regsvr32.exe 83 PID 1312 wrote to memory of 3508 1312 regsvr32.exe 83 PID 3508 wrote to memory of 624 3508 regsvr32.exe 84 PID 3508 wrote to memory of 624 3508 regsvr32.exe 84 PID 3508 wrote to memory of 624 3508 regsvr32.exe 84 PID 624 wrote to memory of 3936 624 regsvr32Srv.exe 85 PID 624 wrote to memory of 3936 624 regsvr32Srv.exe 85 PID 624 wrote to memory of 3936 624 regsvr32Srv.exe 85 PID 3936 wrote to memory of 5012 3936 DesktopLayer.exe 86 PID 3936 wrote to memory of 5012 3936 DesktopLayer.exe 86 PID 5012 wrote to memory of 2416 5012 iexplore.exe 87 PID 5012 wrote to memory of 2416 5012 iexplore.exe 87 PID 5012 wrote to memory of 2416 5012 iexplore.exe 87
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\5a16ffe0019bc40609705dcbc9ecf625262fecbab23485058103fa8278835fb3.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1312 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\5a16ffe0019bc40609705dcbc9ecf625262fecbab23485058103fa8278835fb3.dll2⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3508 -
C:\Windows\SysWOW64\regsvr32Srv.exeC:\Windows\SysWOW64\regsvr32Srv.exe3⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:624 -
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:3936 -
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:5012 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:5012 CREDAT:17410 /prefetch:26⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2416
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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
MD57fecd001d472e28495336306d3e0b570
SHA17dabf5687a11d1d8f92f8ffd348fb73bf077e960
SHA256d3b1b54dfa02ea5cf017cd692023d382defa55e40749816bbddcc3e8ef5e9bff
SHA5125255e2e7897f3abc246464dacea7d32b54a8bdb88806e9d0f54a3d23e76074e2a88adaa35789c32b68d0ca8d6f67726c9ceec31597f3b05628b29cd52af613db
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD5b66c7939b716751686ed25f9940b93e5
SHA1cc0ea11e9afbf85a6db3d8d2651c1e13c986bd3b
SHA256deebbf1434a5f69c4b343f8f902d96b714feac5f18bdc207913e620a08a08c73
SHA51291be2a305b90b64140faa6150f1179e0b077177cdd3a20728494670f863a60133ac1af12c2dd5bbfcc4d2b3fd6248c02de2f93be7b9272abd026e0d9bbdfb0e6
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a