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Analysis
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max time kernel
165s -
max time network
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platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
03/10/2022, 19:29
Static task
static1
Behavioral task
behavioral1
Sample
71813b00b27ee24f7961826b22805c06d2c5c7ae808682af421f14daab43cde8.dll
Resource
win7-20220812-en
General
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Target
71813b00b27ee24f7961826b22805c06d2c5c7ae808682af421f14daab43cde8.dll
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Size
184KB
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MD5
3e05429fc9fc7ab619d9ab8201af1cc0
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SHA1
b49339d998a08905da30d3c1741804db17a9ca90
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SHA256
71813b00b27ee24f7961826b22805c06d2c5c7ae808682af421f14daab43cde8
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SHA512
8a404952e207470ea214497caff91af575be2de266408108763f0285e99ad4a4035930fda3c7ffeccad301299a2fde273394300e47223c2619b3d5afda7ed725
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SSDEEP
3072:9HCnmwzJgdWixQAIkmKXGbAqpKGUtsVwl/p3jFz:9EmcJgZxIkmKXGb3pK5sur
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 1732 rundll32Srv.exe 1744 DesktopLayer.exe -
resource yara_rule behavioral1/files/0x00140000000054ab-56.dat upx behavioral1/memory/1740-58-0x0000000000160000-0x000000000018E000-memory.dmp upx behavioral1/files/0x00140000000054ab-60.dat upx behavioral1/files/0x00140000000054ab-62.dat upx behavioral1/files/0x0009000000013300-63.dat upx behavioral1/files/0x0009000000013300-66.dat upx behavioral1/memory/1732-65-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/files/0x0009000000013300-68.dat upx behavioral1/memory/1744-69-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Loads dropped DLL 2 IoCs
pid Process 1740 rundll32.exe 1732 rundll32Srv.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32Srv.exe rundll32.exe -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\pxE83E.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 -
description ioc Process 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\Recovery\AdminActive 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\IETld\LowMic iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" 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\FileNames iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "371622679" 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\Zoom iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\LowRegistry 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\AdminActive\{E2B04761-439C-11ED-A6C3-FE72C9E2D9C9} = "0" 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\PageSetup iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser 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\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 (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\Recovery\PendingRecovery 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 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\BrowserEmulation\LowMic iexplore.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1744 DesktopLayer.exe 1744 DesktopLayer.exe 1744 DesktopLayer.exe 1744 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 800 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 800 iexplore.exe 800 iexplore.exe 680 IEXPLORE.EXE 680 IEXPLORE.EXE 680 IEXPLORE.EXE 680 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 996 wrote to memory of 1740 996 rundll32.exe 27 PID 996 wrote to memory of 1740 996 rundll32.exe 27 PID 996 wrote to memory of 1740 996 rundll32.exe 27 PID 996 wrote to memory of 1740 996 rundll32.exe 27 PID 996 wrote to memory of 1740 996 rundll32.exe 27 PID 996 wrote to memory of 1740 996 rundll32.exe 27 PID 996 wrote to memory of 1740 996 rundll32.exe 27 PID 1740 wrote to memory of 1732 1740 rundll32.exe 28 PID 1740 wrote to memory of 1732 1740 rundll32.exe 28 PID 1740 wrote to memory of 1732 1740 rundll32.exe 28 PID 1740 wrote to memory of 1732 1740 rundll32.exe 28 PID 1732 wrote to memory of 1744 1732 rundll32Srv.exe 29 PID 1732 wrote to memory of 1744 1732 rundll32Srv.exe 29 PID 1732 wrote to memory of 1744 1732 rundll32Srv.exe 29 PID 1732 wrote to memory of 1744 1732 rundll32Srv.exe 29 PID 1744 wrote to memory of 800 1744 DesktopLayer.exe 30 PID 1744 wrote to memory of 800 1744 DesktopLayer.exe 30 PID 1744 wrote to memory of 800 1744 DesktopLayer.exe 30 PID 1744 wrote to memory of 800 1744 DesktopLayer.exe 30 PID 800 wrote to memory of 680 800 iexplore.exe 32 PID 800 wrote to memory of 680 800 iexplore.exe 32 PID 800 wrote to memory of 680 800 iexplore.exe 32 PID 800 wrote to memory of 680 800 iexplore.exe 32
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\71813b00b27ee24f7961826b22805c06d2c5c7ae808682af421f14daab43cde8.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:996 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\71813b00b27ee24f7961826b22805c06d2c5c7ae808682af421f14daab43cde8.dll,#12⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1740 -
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
PID:1732 -
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:1744 -
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:800 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:800 CREDAT:275457 /prefetch:26⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:680
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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
MD51c5b25d3c1169c17645bf1f721f75269
SHA14946d5b5ef172c2870c63dcb4a8f51361fb845d8
SHA25692d679e551bbbb2f3213ba397f689b1f0a839f0edff6bd83d8b707932a849dcb
SHA512a17d4635ed8399a0a5b448276efe7557ea0c269f54903cc97296e299e8f86f789349f406ce0211c5d0487814371793acb77d61fb6f50974895d4a7dbc23faf29
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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