Analysis
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max time kernel
133s -
max time network
110s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
13-05-2021 13:42
Static task
static1
Behavioral task
behavioral1
Sample
cdb4c11175068c6404326a6a219cbb2fb7acff1d64d1ed0a55281b5c89e2a4ad.dll
Resource
win7v20210410
General
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Target
cdb4c11175068c6404326a6a219cbb2fb7acff1d64d1ed0a55281b5c89e2a4ad.dll
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Size
549KB
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MD5
21fae79fe11dd08f734ed645534cc992
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SHA1
63a5235d3a71e1871b736b62ebbd3fb9d2e95513
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SHA256
cdb4c11175068c6404326a6a219cbb2fb7acff1d64d1ed0a55281b5c89e2a4ad
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SHA512
e05f6e0c29751574198523af0ae63f28a602d10fa2d9ccd3078687c1229d1c0c0f483413eb58b05a91ee61f2cd4c67d37cfed0ee35082ba7e7e47b144ace7937
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
Processes:
rundll32Srv.exeDesktopLayer.exepid process 3588 rundll32Srv.exe 3148 DesktopLayer.exe -
Processes:
resource yara_rule C:\Windows\SysWOW64\rundll32Srv.exe upx C:\Windows\SysWOW64\rundll32Srv.exe upx behavioral2/memory/3588-120-0x0000000000400000-0x000000000042E000-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\pxD344.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\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "327148592" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\FlipAhead\NextUpdateDate = "327148761" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" 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 Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\Main 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 (int) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\HistoryJournalCertificate\NextUpdateDate = "327148649" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{DD8764A5-B49B-11EB-B2DB-E6C57AC66A15} = "0" 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\HistoryJournalCertificate iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch 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\FlipAhead iexplore.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
DesktopLayer.exepid process 3148 DesktopLayer.exe 3148 DesktopLayer.exe 3148 DesktopLayer.exe 3148 DesktopLayer.exe 3148 DesktopLayer.exe 3148 DesktopLayer.exe 3148 DesktopLayer.exe 3148 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 3508 IEXPLORE.EXE 3508 IEXPLORE.EXE 3508 IEXPLORE.EXE 3508 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 1636 796 rundll32.exe rundll32.exe PID 796 wrote to memory of 1636 796 rundll32.exe rundll32.exe PID 796 wrote to memory of 1636 796 rundll32.exe rundll32.exe PID 1636 wrote to memory of 3588 1636 rundll32.exe rundll32Srv.exe PID 1636 wrote to memory of 3588 1636 rundll32.exe rundll32Srv.exe PID 1636 wrote to memory of 3588 1636 rundll32.exe rundll32Srv.exe PID 3588 wrote to memory of 3148 3588 rundll32Srv.exe DesktopLayer.exe PID 3588 wrote to memory of 3148 3588 rundll32Srv.exe DesktopLayer.exe PID 3588 wrote to memory of 3148 3588 rundll32Srv.exe DesktopLayer.exe PID 3148 wrote to memory of 3732 3148 DesktopLayer.exe iexplore.exe PID 3148 wrote to memory of 3732 3148 DesktopLayer.exe iexplore.exe PID 3732 wrote to memory of 3508 3732 iexplore.exe IEXPLORE.EXE PID 3732 wrote to memory of 3508 3732 iexplore.exe IEXPLORE.EXE PID 3732 wrote to memory of 3508 3732 iexplore.exe IEXPLORE.EXE
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\cdb4c11175068c6404326a6a219cbb2fb7acff1d64d1ed0a55281b5c89e2a4ad.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:796 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\cdb4c11175068c6404326a6a219cbb2fb7acff1d64d1ed0a55281b5c89e2a4ad.dll,#12⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1636 -
C:\Windows\SysWOW64\rundll32Srv.exeC:\Windows\SysWOW64\rundll32Srv.exe3⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3588 -
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:3148 -
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:3508
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/1636-114-0x0000000000000000-mapping.dmp
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memory/3148-118-0x0000000000000000-mapping.dmp
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memory/3148-123-0x00000000001F0000-0x00000000001F1000-memory.dmpFilesize
4KB
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memory/3508-128-0x0000000000000000-mapping.dmp
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memory/3588-119-0x00000000001E0000-0x00000000001EF000-memory.dmpFilesize
60KB
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memory/3588-120-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/3588-115-0x0000000000000000-mapping.dmp
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memory/3732-126-0x0000000000000000-mapping.dmp
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memory/3732-127-0x00007FFADC0A0000-0x00007FFADC10B000-memory.dmpFilesize
428KB