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Analysis
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max time kernel
181s -
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, 19:35
Static task
static1
Behavioral task
behavioral1
Sample
3f00b878ce79ea6b33a00ae8fdbfb6ff8fab201544f9eb4df702a117684092e7.dll
Resource
win7-20220812-en
General
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Target
3f00b878ce79ea6b33a00ae8fdbfb6ff8fab201544f9eb4df702a117684092e7.dll
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Size
400KB
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MD5
44526eb19747af0fc8bb59a257158ee0
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SHA1
a77e18d5a037c654e3ca0bb67b84043dce20f4e8
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SHA256
3f00b878ce79ea6b33a00ae8fdbfb6ff8fab201544f9eb4df702a117684092e7
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SHA512
3f1164a07fc324acdff95739b31f1c65d7d83fbfb27edcb70281d1648cf7427f85f1244b19788310f1970d7cd2c3b81ffd042561f6c49ce1498b0231cd9c7557
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SSDEEP
6144:5PlV59g81QWguohIP/siMbo8Crn2zzwRFMciFMNrb3YgxS3bCAO5kkGONa3dNlOT:xlVvN1QWguohInJDrn8zwNF7eCrRatY
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 1744 rundll32Srv.exe 1648 DesktopLayer.exe -
resource yara_rule behavioral1/files/0x00140000000054ab-56.dat upx behavioral1/files/0x00140000000054ab-58.dat upx behavioral1/files/0x00140000000054ab-60.dat upx behavioral1/files/0x000a0000000122f7-61.dat upx behavioral1/files/0x000a0000000122f7-64.dat upx behavioral1/memory/1744-63-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/files/0x000a0000000122f7-67.dat upx behavioral1/memory/1648-68-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Loads dropped DLL 2 IoCs
pid Process 1820 rundll32.exe 1744 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\pxAC66.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 -
Program crash 1 IoCs
pid pid_target Process procid_target 1644 1820 WerFault.exe 28 -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ 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\IETld\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 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{FF824F91-439D-11ED-979E-6A94EDCEDC7A} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch 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\DomainSuggestion\FileNames 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\BrowserEmulation\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Zoom 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\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "371623141" 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\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser 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\GPU 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\Main 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\PageSetup 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 Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1648 DesktopLayer.exe 1648 DesktopLayer.exe 1648 DesktopLayer.exe 1648 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1724 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 1724 iexplore.exe 1724 iexplore.exe 1564 IEXPLORE.EXE 1564 IEXPLORE.EXE 1564 IEXPLORE.EXE 1564 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 27 IoCs
description pid Process procid_target PID 1108 wrote to memory of 1820 1108 rundll32.exe 28 PID 1108 wrote to memory of 1820 1108 rundll32.exe 28 PID 1108 wrote to memory of 1820 1108 rundll32.exe 28 PID 1108 wrote to memory of 1820 1108 rundll32.exe 28 PID 1108 wrote to memory of 1820 1108 rundll32.exe 28 PID 1108 wrote to memory of 1820 1108 rundll32.exe 28 PID 1108 wrote to memory of 1820 1108 rundll32.exe 28 PID 1820 wrote to memory of 1744 1820 rundll32.exe 29 PID 1820 wrote to memory of 1744 1820 rundll32.exe 29 PID 1820 wrote to memory of 1744 1820 rundll32.exe 29 PID 1820 wrote to memory of 1744 1820 rundll32.exe 29 PID 1744 wrote to memory of 1648 1744 rundll32Srv.exe 31 PID 1744 wrote to memory of 1648 1744 rundll32Srv.exe 31 PID 1744 wrote to memory of 1648 1744 rundll32Srv.exe 31 PID 1744 wrote to memory of 1648 1744 rundll32Srv.exe 31 PID 1820 wrote to memory of 1644 1820 rundll32.exe 30 PID 1820 wrote to memory of 1644 1820 rundll32.exe 30 PID 1820 wrote to memory of 1644 1820 rundll32.exe 30 PID 1820 wrote to memory of 1644 1820 rundll32.exe 30 PID 1648 wrote to memory of 1724 1648 DesktopLayer.exe 32 PID 1648 wrote to memory of 1724 1648 DesktopLayer.exe 32 PID 1648 wrote to memory of 1724 1648 DesktopLayer.exe 32 PID 1648 wrote to memory of 1724 1648 DesktopLayer.exe 32 PID 1724 wrote to memory of 1564 1724 iexplore.exe 34 PID 1724 wrote to memory of 1564 1724 iexplore.exe 34 PID 1724 wrote to memory of 1564 1724 iexplore.exe 34 PID 1724 wrote to memory of 1564 1724 iexplore.exe 34
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\3f00b878ce79ea6b33a00ae8fdbfb6ff8fab201544f9eb4df702a117684092e7.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1108 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\3f00b878ce79ea6b33a00ae8fdbfb6ff8fab201544f9eb4df702a117684092e7.dll,#12⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1820 -
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:1744 -
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:1648 -
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:1724 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1724 CREDAT:275457 /prefetch:26⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1564
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1820 -s 2283⤵
- Program crash
PID:1644
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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
MD56fb2a21f8d726b67939dd06c52a2b483
SHA17373c6b925e931b12f31624f83e3d310b418a63f
SHA256f74d84a23cb1ccee0964089b9c0946d2f52e9021a478409ccae67605b1dc3af7
SHA512a4fc6325f19dca823edd225a7dabc04f15a6704d82655fad181ae95609a4aec9aca8e46815f2473466aa6178b86e6f573ae03024c3c41f5b923f0bb8083d8f32
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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