Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system - submitted
10/03/2024, 18:12
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
04e6a78bec09791767edbcfbd8c5c010cdec58bd410db696c75f7fc4ac4fc140.dll
Resource
win7-20231129-en
windows7-x64
13 signatures
150 seconds
General
- Target 04e6a78bec09791767edbcfbd8c5c010cdec58bd410db696c75f7fc4ac4fc140.dll
- Size 97KB
- Sample240310-wtkq1shf99
- SHA256 04e6a78bec09791767edbcfbd8c5c010cdec58bd410db696c75f7fc4ac4fc140
- MD5 53be458a9216a8afca49f788e2957052
- SHA1 da10b3e1ea37297bdb682d8ac4bd3120ecd066e8
- SHA512 f4cabab5821f2dec9f4151979c07086a2e481f6030bcb9d5d84ac5dc68e8a2024d9125f333dd0d097f434dac71f55b6b372e2f630d6d333d3ee22de0e7c2041c
- SSDEEP 3072:nVDgUtSVfR6zgw8P0BGMMUo3MH+N4lLKC:nhzEfR6zr8PrcmCa4
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral2/files/0x000700000001e59e-3.dat UPX behavioral2/memory/1064-5-0x0000000000400000-0x000000000042F000-memory.dmp UPX behavioral2/memory/1064-8-0x0000000000400000-0x000000000042F000-memory.dmp UPX behavioral2/memory/4752-15-0x0000000000400000-0x000000000042F000-memory.dmp UPX behavioral2/memory/4752-13-0x0000000000400000-0x000000000042F000-memory.dmp UPX - Executes dropped EXE 2 IoCs
pid Process 1064 regsvr32Srv.exe 4752 DesktopLayer.exe -
resource yara_rule behavioral2/files/0x000700000001e59e-3.dat upx behavioral2/memory/1064-5-0x0000000000400000-0x000000000042F000-memory.dmp upx behavioral2/memory/1064-8-0x0000000000400000-0x000000000042F000-memory.dmp upx behavioral2/memory/4752-15-0x0000000000400000-0x000000000042F000-memory.dmp upx behavioral2/memory/4752-13-0x0000000000400000-0x000000000042F000-memory.dmp upx - Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\regsvr32Srv.exe regsvr32.exe - Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\px3BE0.tmp regsvr32Srv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe regsvr32Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe regsvr32Srv.exe -
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31093526" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2733842872" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{CE65D20B-DF09-11EE-87B8-CA9969386483} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31093526" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "416859345" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2733217701" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2733842872" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\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-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31093526" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31093526" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2733217701" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe - Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A5DE670-2241-4308-99AF-FA5605236B76} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A5DE670-2241-4308-99AF-FA5605236B76}\ = "Audio Converter PlugIn Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A5DE670-2241-4308-99AF-FA5605236B76}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A5DE670-2241-4308-99AF-FA5605236B76}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\04e6a78bec09791767edbcfbd8c5c010cdec58bd410db696c75f7fc4ac4fc140.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6A5DE670-2241-4308-99AF-FA5605236B76}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe - Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 4752 DesktopLayer.exe 4752 DesktopLayer.exe 4752 DesktopLayer.exe 4752 DesktopLayer.exe 4752 DesktopLayer.exe 4752 DesktopLayer.exe 4752 DesktopLayer.exe 4752 DesktopLayer.exe - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4620 iexplore.exe - Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 4620 iexplore.exe 4620 iexplore.exe 2244 IEXPLORE.EXE 2244 IEXPLORE.EXE 2244 IEXPLORE.EXE 2244 IEXPLORE.EXE - Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 4172 wrote to memory of 3344 4172 regsvr32.exe 88 PID 4172 wrote to memory of 3344 4172 regsvr32.exe 88 PID 4172 wrote to memory of 3344 4172 regsvr32.exe 88 PID 3344 wrote to memory of 1064 3344 regsvr32.exe 89 PID 3344 wrote to memory of 1064 3344 regsvr32.exe 89 PID 3344 wrote to memory of 1064 3344 regsvr32.exe 89 PID 1064 wrote to memory of 4752 1064 regsvr32Srv.exe 90 PID 1064 wrote to memory of 4752 1064 regsvr32Srv.exe 90 PID 1064 wrote to memory of 4752 1064 regsvr32Srv.exe 90 PID 4752 wrote to memory of 4620 4752 DesktopLayer.exe 91 PID 4752 wrote to memory of 4620 4752 DesktopLayer.exe 91 PID 4620 wrote to memory of 2244 4620 iexplore.exe 92 PID 4620 wrote to memory of 2244 4620 iexplore.exe 92 PID 4620 wrote to memory of 2244 4620 iexplore.exe 92
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\04e6a78bec09791767edbcfbd8c5c010cdec58bd410db696c75f7fc4ac4fc140.dll1⤵
- Suspicious use of WriteProcessMemory
PID:4172 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\04e6a78bec09791767edbcfbd8c5c010cdec58bd410db696c75f7fc4ac4fc140.dll2⤵
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3344 -
C:\Windows\SysWOW64\regsvr32Srv.exeC:\Windows\SysWOW64\regsvr32Srv.exe3⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1064 -
C:\Program Files (x86)\Microsoft\DesktopLayer.exe"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4752 -
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:4620 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4620 CREDAT:17410 /prefetch:26⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2244
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\verB3B0.tmp
- Size 15KB
- SHA256 557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1
- MD5 1a545d0052b581fbb2ab4c52133846bc
- SHA1 62f3266a9b9925cd6d98658b92adec673cbe3dd3
- SHA512 bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d
- SSDEEP 384:79Jv9DF9/C9qc9/J9V791T9TK9Xf9Nm9xQ95a9BR9fV:79Jv9DF9/C9qc9/J9V791T9TK9Xf9NmT
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\PL0BY74L\suggestions[1].en-US
- Size 17KB
- SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
- MD5 5a34cb996293fde2cb7a4ac89587393a
- SHA1 3c96c993500690d1a77873cd62bc639b3a10653f
- SHA512 e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
- SSDEEP 384:K4gN8sGygaEKfWYSJUKbO7UckxtBjCdY7mO3D0C5l+piEieDSV126ry1/XSGKwG3:K4gNFXiKfWfJ1Kockxbd7mAt5Mp5ie2F
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\SysWOW64\regsvr32Srv.exe
- Size 61KB
- SHA256 e6db1aa577d981ff37dffc63cf7496a94db52e27c035f59983236cf1117becaf
- MD5 1e28b93df4dc13ba183d7cac665bc45e
- SHA1 9f91ec079b5033516398e65970431602ba51647c
- SHA512 f133fd3ce7ddc48f090f3f94c98ea8b3b6ad017fc774c43d691176fe3f18a499de890be3aaaadd36299df41ea0f705a7375a6772409efccd11991bc49e4d7331
- SSDEEP 1536:5TT95bRCdsKmz7NYhojPK9rM6eC19bSg/uJ:p95AqNYhcPKFMEjZA
- MD5 SHA1 SHA512 SSDEEP