Analysis
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max time kernel
132s -
max time network
191s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
20-06-2022 23:57
Static task
static1
Behavioral task
behavioral1
Sample
3138a402a7df1d48dc76c42db50761e2d80c1d2925cbb9279fa5d01f835aa04b.dll
Resource
win7-20220414-en
General
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Target
3138a402a7df1d48dc76c42db50761e2d80c1d2925cbb9279fa5d01f835aa04b.dll
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Size
155KB
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MD5
8ca0133cfea932a7a181c23353628f3f
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SHA1
c7111e2f7cc67dcdd5d18bdde76476b681cfc18a
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SHA256
3138a402a7df1d48dc76c42db50761e2d80c1d2925cbb9279fa5d01f835aa04b
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SHA512
485023c4b67864458e4ee94d06083bb68f1856aed463f590a25bfabca614379ecad9b558ba3a8695c8d9192966fc64de9afdca9e49e67ad77a32646391c22186
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
Processes:
rundll32Srv.exeDesktopLayer.exepid process 1524 rundll32Srv.exe 1400 DesktopLayer.exe -
Processes:
resource yara_rule \Windows\SysWOW64\rundll32Srv.exe upx behavioral1/memory/1216-58-0x00000000001D0000-0x00000000001FE000-memory.dmp upx C:\Windows\SysWOW64\rundll32Srv.exe upx C:\Windows\SysWOW64\rundll32Srv.exe upx \Program Files (x86)\Microsoft\DesktopLayer.exe upx behavioral1/memory/1524-65-0x0000000000400000-0x000000000042E000-memory.dmp upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx behavioral1/memory/1400-69-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Loads dropped DLL 2 IoCs
Processes:
rundll32.exerundll32Srv.exepid process 1216 rundll32.exe 1524 rundll32Srv.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in System32 directory 1 IoCs
Processes:
rundll32.exedescription ioc process File created C:\Windows\SysWOW64\rundll32Srv.exe rundll32.exe -
Drops file in Program Files directory 3 IoCs
Processes:
rundll32Srv.exedescription ioc process File opened for modification C:\Program Files (x86)\Microsoft\pxBCBB.tmp rundll32Srv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe rundll32Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe rundll32Srv.exe -
Processes:
iexplore.exeIEXPLORE.EXEdescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\IETld\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\LowRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\GPU iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\InternetRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\IntelliForms iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\PageSetup iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{53E6C061-F106-11EC-8873-66AE473A865F} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "362541987" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
DesktopLayer.exepid process 1400 DesktopLayer.exe 1400 DesktopLayer.exe 1400 DesktopLayer.exe 1400 DesktopLayer.exe -
Suspicious use of AdjustPrivilegeToken 8 IoCs
Processes:
rundll32.exedescription pid process Token: SeImpersonatePrivilege 1216 rundll32.exe Token: SeTcbPrivilege 1216 rundll32.exe Token: SeChangeNotifyPrivilege 1216 rundll32.exe Token: SeCreateTokenPrivilege 1216 rundll32.exe Token: SeBackupPrivilege 1216 rundll32.exe Token: SeRestorePrivilege 1216 rundll32.exe Token: SeIncreaseQuotaPrivilege 1216 rundll32.exe Token: SeAssignPrimaryTokenPrivilege 1216 rundll32.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid process 1292 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
iexplore.exeIEXPLORE.EXEpid process 1292 iexplore.exe 1292 iexplore.exe 1156 IEXPLORE.EXE 1156 IEXPLORE.EXE 1156 IEXPLORE.EXE 1156 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
rundll32.exerundll32.exerundll32Srv.exeDesktopLayer.exeiexplore.exedescription pid process target process PID 964 wrote to memory of 1216 964 rundll32.exe rundll32.exe PID 964 wrote to memory of 1216 964 rundll32.exe rundll32.exe PID 964 wrote to memory of 1216 964 rundll32.exe rundll32.exe PID 964 wrote to memory of 1216 964 rundll32.exe rundll32.exe PID 964 wrote to memory of 1216 964 rundll32.exe rundll32.exe PID 964 wrote to memory of 1216 964 rundll32.exe rundll32.exe PID 964 wrote to memory of 1216 964 rundll32.exe rundll32.exe PID 1216 wrote to memory of 1524 1216 rundll32.exe rundll32Srv.exe PID 1216 wrote to memory of 1524 1216 rundll32.exe rundll32Srv.exe PID 1216 wrote to memory of 1524 1216 rundll32.exe rundll32Srv.exe PID 1216 wrote to memory of 1524 1216 rundll32.exe rundll32Srv.exe PID 1524 wrote to memory of 1400 1524 rundll32Srv.exe DesktopLayer.exe PID 1524 wrote to memory of 1400 1524 rundll32Srv.exe DesktopLayer.exe PID 1524 wrote to memory of 1400 1524 rundll32Srv.exe DesktopLayer.exe PID 1524 wrote to memory of 1400 1524 rundll32Srv.exe DesktopLayer.exe PID 1400 wrote to memory of 1292 1400 DesktopLayer.exe iexplore.exe PID 1400 wrote to memory of 1292 1400 DesktopLayer.exe iexplore.exe PID 1400 wrote to memory of 1292 1400 DesktopLayer.exe iexplore.exe PID 1400 wrote to memory of 1292 1400 DesktopLayer.exe iexplore.exe PID 1292 wrote to memory of 1156 1292 iexplore.exe IEXPLORE.EXE PID 1292 wrote to memory of 1156 1292 iexplore.exe IEXPLORE.EXE PID 1292 wrote to memory of 1156 1292 iexplore.exe IEXPLORE.EXE PID 1292 wrote to memory of 1156 1292 iexplore.exe IEXPLORE.EXE
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\3138a402a7df1d48dc76c42db50761e2d80c1d2925cbb9279fa5d01f835aa04b.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\3138a402a7df1d48dc76c42db50761e2d80c1d2925cbb9279fa5d01f835aa04b.dll,#12⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32Srv.exeC:\Windows\SysWOW64\rundll32Srv.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
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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
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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
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C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1292 CREDAT:275457 /prefetch:26⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Program Files (x86)\Microsoft\DesktopLayer.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Program Files (x86)\Microsoft\DesktopLayer.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\D7U73GKD.txtFilesize
600B
MD557cb0a9edbf44556b5b08032271028c1
SHA104f88c6cc7c49ddc5cd1c89a94dc89fea8ffb58c
SHA256530b1809c01f5d447248d23786c4c25317931da7b1f62423266bf652c62fc4cb
SHA512a114273dcb6ea7f297e455223bfd875a4e4cf19a54de5c425ca7a2a4c3834bcf0a4d2b6677d93bc29beab8e8e6deeaeed74bd0e77ac56d5a2ea7b26c48ac1126
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C:\Windows\SysWOW64\rundll32Srv.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Windows\SysWOW64\rundll32Srv.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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\Program Files (x86)\Microsoft\DesktopLayer.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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\Windows\SysWOW64\rundll32Srv.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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memory/1216-58-0x00000000001D0000-0x00000000001FE000-memory.dmpFilesize
184KB
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memory/1216-54-0x0000000000000000-mapping.dmp
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memory/1216-57-0x0000000010000000-0x000000001002B000-memory.dmpFilesize
172KB
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memory/1216-70-0x0000000010000000-0x000000001002B000-memory.dmpFilesize
172KB
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memory/1216-55-0x0000000075711000-0x0000000075713000-memory.dmpFilesize
8KB
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memory/1400-64-0x0000000000000000-mapping.dmp
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memory/1400-69-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/1524-59-0x0000000000000000-mapping.dmp
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memory/1524-65-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB