Analysis
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max time kernel
132s -
max time network
103s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
13-05-2021 13:33
Static task
static1
Behavioral task
behavioral1
Sample
89f2136c1668228f13f57ab3f834d0d73fa2c4f5524c6f05b4a99fc0cb068de3.dll
Resource
win7v20210410
General
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Target
89f2136c1668228f13f57ab3f834d0d73fa2c4f5524c6f05b4a99fc0cb068de3.dll
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Size
549KB
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MD5
5bda0a8ebff1a1ac8ff3d345ef2e97a3
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SHA1
0d2fb865b1dbedf2ee0d767ed32e3029fcc6efd0
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SHA256
89f2136c1668228f13f57ab3f834d0d73fa2c4f5524c6f05b4a99fc0cb068de3
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SHA512
2519e811c3e005186b6055b35891288587917b76c21eed92e6b27be2cd12a455443d1c96bbfbe72c0a31a96fab553ce64f01dc267b6948118f92c175ee81a71b
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
Processes:
rundll32Srv.exeDesktopLayer.exepid process 3908 rundll32Srv.exe 1960 DesktopLayer.exe -
Processes:
resource yara_rule C:\Windows\SysWOW64\rundll32Srv.exe upx C:\Windows\SysWOW64\rundll32Srv.exe upx behavioral2/memory/3908-119-0x0000000000400000-0x000000000042E000-memory.dmp upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx -
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\pxBCFC.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 Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\HistoryJournalCertificate iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\HistoryJournalCertificate\NextUpdateDate = "327147397" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\FlipAhead iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\FlipAhead\NextUpdateDate = "327147509" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{F33E92D5-B498-11EB-B2DB-E6C57AC66A15} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "327147340" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
DesktopLayer.exepid process 1960 DesktopLayer.exe 1960 DesktopLayer.exe 1960 DesktopLayer.exe 1960 DesktopLayer.exe 1960 DesktopLayer.exe 1960 DesktopLayer.exe 1960 DesktopLayer.exe 1960 DesktopLayer.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
iexplore.exepid process 3732 iexplore.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid process 3732 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
iexplore.exeIEXPLORE.EXEpid process 3732 iexplore.exe 3732 iexplore.exe 2860 IEXPLORE.EXE 2860 IEXPLORE.EXE 2860 IEXPLORE.EXE 2860 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
rundll32.exerundll32.exerundll32Srv.exeDesktopLayer.exeiexplore.exedescription pid process target process PID 796 wrote to memory of 2168 796 rundll32.exe rundll32.exe PID 796 wrote to memory of 2168 796 rundll32.exe rundll32.exe PID 796 wrote to memory of 2168 796 rundll32.exe rundll32.exe PID 2168 wrote to memory of 3908 2168 rundll32.exe rundll32Srv.exe PID 2168 wrote to memory of 3908 2168 rundll32.exe rundll32Srv.exe PID 2168 wrote to memory of 3908 2168 rundll32.exe rundll32Srv.exe PID 3908 wrote to memory of 1960 3908 rundll32Srv.exe DesktopLayer.exe PID 3908 wrote to memory of 1960 3908 rundll32Srv.exe DesktopLayer.exe PID 3908 wrote to memory of 1960 3908 rundll32Srv.exe DesktopLayer.exe PID 1960 wrote to memory of 3732 1960 DesktopLayer.exe iexplore.exe PID 1960 wrote to memory of 3732 1960 DesktopLayer.exe iexplore.exe PID 3732 wrote to memory of 2860 3732 iexplore.exe IEXPLORE.EXE PID 3732 wrote to memory of 2860 3732 iexplore.exe IEXPLORE.EXE PID 3732 wrote to memory of 2860 3732 iexplore.exe IEXPLORE.EXE
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\89f2136c1668228f13f57ab3f834d0d73fa2c4f5524c6f05b4a99fc0cb068de3.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:796 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\89f2136c1668228f13f57ab3f834d0d73fa2c4f5524c6f05b4a99fc0cb068de3.dll,#12⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2168 -
C:\Windows\SysWOW64\rundll32Srv.exeC:\Windows\SysWOW64\rundll32Srv.exe3⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3908 -
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:1960 -
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"5⤵
- Modifies Internet Explorer settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3732 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3732 CREDAT:82945 /prefetch:26⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2860
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Program Files (x86)\Microsoft\DesktopLayer.exeMD5
ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Program Files (x86)\Microsoft\DesktopLayer.exeMD5
ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Windows\SysWOW64\rundll32Srv.exeMD5
ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Windows\SysWOW64\rundll32Srv.exeMD5
ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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memory/1960-120-0x0000000000000000-mapping.dmp
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memory/1960-123-0x0000000000430000-0x0000000000431000-memory.dmpFilesize
4KB
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memory/2168-114-0x0000000000000000-mapping.dmp
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memory/2860-128-0x0000000000000000-mapping.dmp
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memory/3732-124-0x0000000000000000-mapping.dmp
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memory/3732-125-0x00007FFADC0A0000-0x00007FFADC10B000-memory.dmpFilesize
428KB
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memory/3908-118-0x00000000001E0000-0x00000000001EF000-memory.dmpFilesize
60KB
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memory/3908-119-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/3908-115-0x0000000000000000-mapping.dmp