Analysis
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max time kernel
127s -
max time network
142s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
21/11/2022, 11:17
Static task
static1
Behavioral task
behavioral1
Sample
110ba9ac9278bc08e86df886eff8c11fc021d45c3cd3bcff2e4c157dc39f85f0.dll
Resource
win7-20220812-en
General
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Target
110ba9ac9278bc08e86df886eff8c11fc021d45c3cd3bcff2e4c157dc39f85f0.dll
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Size
535KB
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MD5
4cfba94b568f1cc0a2609219e0bc62d0
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SHA1
4758f8fa58025618899b30500f48e55dfb176373
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SHA256
110ba9ac9278bc08e86df886eff8c11fc021d45c3cd3bcff2e4c157dc39f85f0
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SHA512
17caa91ed513e6b0ce517313ab51787c771defb941b2f5fd2ded6e30137f1257e6a7fc359059a07606e7fe6422383280b000864752793b02a3eabf62ac3e419a
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SSDEEP
12288:Bzpb/zYEHr7MtRY5aqqhfx183+GaX5KaHe2ufVb8bobqUmabJNPL:Bzpb/zYEHr7MtRoaqqhfx1624aHSgboB
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 1908 regsvr32Srv.exe 784 DesktopLayer.exe -
resource yara_rule behavioral1/files/0x00140000000054ab-57.dat upx behavioral1/files/0x00140000000054ab-59.dat upx behavioral1/files/0x00140000000054ab-61.dat upx behavioral1/memory/1908-65-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/files/0x0009000000012726-67.dat upx behavioral1/files/0x0009000000012726-64.dat upx behavioral1/files/0x0009000000012726-62.dat upx behavioral1/memory/784-68-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Loads dropped DLL 2 IoCs
pid Process 1112 regsvr32.exe 1908 regsvr32Srv.exe -
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\pxDCAA.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 Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\LowRegistry iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "375798049" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\GPU iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\IETld\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\InternetRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{823E8661-6996-11ED-8716-EAF6071D98F9} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\IntelliForms iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\PageSetup iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe -
Modifies registry class 24 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A02C470C-76BE-4592-8F5E-2B2E1B10A3D7}\InprocServer32\ThreadingModel = "Both" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{AA812285-AC65-4311-9434-03286DD98C65} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{AA812285-AC65-4311-9434-03286DD98C65}\ = "General" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{658C5E1C-58E1-43CA-9D10-13735D465576}\InprocServer32\ThreadingModel = "Both" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88616E15-8D2A-421C-9441-E0622F3A133E} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88616E15-8D2A-421C-9441-E0622F3A133E}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\110ba9ac9278bc08e86df886eff8c11fc021d45c3cd3bcff2e4c157dc39f85f0.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88616E15-8D2A-421C-9441-E0622F3A133E}\InprocServer32\ThreadingModel = "Both" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A02C470C-76BE-4592-8F5E-2B2E1B10A3D7} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{AA812285-AC65-4311-9434-03286DD98C65}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\110ba9ac9278bc08e86df886eff8c11fc021d45c3cd3bcff2e4c157dc39f85f0.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{658C5E1C-58E1-43CA-9D10-13735D465576}\FriendlyName = "Lentoid HEVC Decoder" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{658C5E1C-58E1-43CA-9D10-13735D465576}\CLSID = "{658C5E1C-58E1-43CA-9D10-13735D465576}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A02C470C-76BE-4592-8F5E-2B2E1B10A3D7}\ = "License" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{AA812285-AC65-4311-9434-03286DD98C65}\InprocServer32 regsvr32.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{658C5E1C-58E1-43CA-9D10-13735D465576}\FilterData = 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 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A02C470C-76BE-4592-8F5E-2B2E1B10A3D7}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\110ba9ac9278bc08e86df886eff8c11fc021d45c3cd3bcff2e4c157dc39f85f0.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{AA812285-AC65-4311-9434-03286DD98C65}\InprocServer32\ThreadingModel = "Both" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{658C5E1C-58E1-43CA-9D10-13735D465576} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{658C5E1C-58E1-43CA-9D10-13735D465576} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{658C5E1C-58E1-43CA-9D10-13735D465576}\ = "Lentoid HEVC Decoder" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{658C5E1C-58E1-43CA-9D10-13735D465576}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{658C5E1C-58E1-43CA-9D10-13735D465576}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\110ba9ac9278bc08e86df886eff8c11fc021d45c3cd3bcff2e4c157dc39f85f0.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A02C470C-76BE-4592-8F5E-2B2E1B10A3D7}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88616E15-8D2A-421C-9441-E0622F3A133E}\ = "About" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{88616E15-8D2A-421C-9441-E0622F3A133E}\InprocServer32 regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 784 DesktopLayer.exe 784 DesktopLayer.exe 784 DesktopLayer.exe 784 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1784 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 1784 iexplore.exe 1784 iexplore.exe 1800 IEXPLORE.EXE 1800 IEXPLORE.EXE 1800 IEXPLORE.EXE 1800 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 1576 wrote to memory of 1112 1576 regsvr32.exe 28 PID 1576 wrote to memory of 1112 1576 regsvr32.exe 28 PID 1576 wrote to memory of 1112 1576 regsvr32.exe 28 PID 1576 wrote to memory of 1112 1576 regsvr32.exe 28 PID 1576 wrote to memory of 1112 1576 regsvr32.exe 28 PID 1576 wrote to memory of 1112 1576 regsvr32.exe 28 PID 1576 wrote to memory of 1112 1576 regsvr32.exe 28 PID 1112 wrote to memory of 1908 1112 regsvr32.exe 29 PID 1112 wrote to memory of 1908 1112 regsvr32.exe 29 PID 1112 wrote to memory of 1908 1112 regsvr32.exe 29 PID 1112 wrote to memory of 1908 1112 regsvr32.exe 29 PID 1908 wrote to memory of 784 1908 regsvr32Srv.exe 30 PID 1908 wrote to memory of 784 1908 regsvr32Srv.exe 30 PID 1908 wrote to memory of 784 1908 regsvr32Srv.exe 30 PID 1908 wrote to memory of 784 1908 regsvr32Srv.exe 30 PID 784 wrote to memory of 1784 784 DesktopLayer.exe 31 PID 784 wrote to memory of 1784 784 DesktopLayer.exe 31 PID 784 wrote to memory of 1784 784 DesktopLayer.exe 31 PID 784 wrote to memory of 1784 784 DesktopLayer.exe 31 PID 1784 wrote to memory of 1800 1784 iexplore.exe 33 PID 1784 wrote to memory of 1800 1784 iexplore.exe 33 PID 1784 wrote to memory of 1800 1784 iexplore.exe 33 PID 1784 wrote to memory of 1800 1784 iexplore.exe 33
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\110ba9ac9278bc08e86df886eff8c11fc021d45c3cd3bcff2e4c157dc39f85f0.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1576 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\110ba9ac9278bc08e86df886eff8c11fc021d45c3cd3bcff2e4c157dc39f85f0.dll2⤵
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1112 -
C:\Windows\SysWOW64\regsvr32Srv.exeC:\Windows\SysWOW64\regsvr32Srv.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1908 -
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:784 -
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:1784 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1784 CREDAT:275457 /prefetch:26⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1800
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
608B
MD51f9531c7681eae6c2ffc160b9a613188
SHA1778c66e1abfc43990c3d991a50b5df186cb6da4f
SHA2565052d0a147b3b08efd72ec379bdfd64c5991ee72ae0c76f87cf2ac598afc3c20
SHA512b128f814773a1777e7b7d9fae0b00558527fbbd1dc688b8004b81b63ffa69335ff751aa0639448f8bf74e03b3b12add0df029fc5b0b96279bab876747f58d9a6
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a