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Analysis
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max time kernel
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max time network
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platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
21/11/2022, 10:40
Static task
static1
Behavioral task
behavioral1
Sample
92b8bc7045f8749d165db8d995089593097fa6fb1ef704410844e648c3b53a90.dll
Resource
win7-20220901-en
General
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Target
92b8bc7045f8749d165db8d995089593097fa6fb1ef704410844e648c3b53a90.dll
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Size
387KB
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MD5
087ded1caa48db77756c6e2f804149c0
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SHA1
d910b316af79e5094e0a8c3bcc4f05b951453e59
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SHA256
92b8bc7045f8749d165db8d995089593097fa6fb1ef704410844e648c3b53a90
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SHA512
0a38353065075d4222080450053027e216f5bccb81e95f5b336bccace8db1204175ec2be5cfdfc7bd5edc42876ebcc1c280797f344286d64fab6c0f6cdc0c375
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SSDEEP
12288:0uM4nc11eju169PkNROaHrmtccN4aE4m6:w0jr9PkopE4m
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 1416 rundll32Srv.exe 1312 DesktopLayer.exe -
resource yara_rule behavioral1/files/0x000500000000b2d2-56.dat upx behavioral1/files/0x000500000000b2d2-58.dat upx behavioral1/files/0x000500000000b2d2-60.dat upx behavioral1/files/0x0009000000013199-61.dat upx behavioral1/files/0x0009000000013199-63.dat upx behavioral1/memory/1416-64-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/files/0x0009000000013199-66.dat upx behavioral1/memory/1312-67-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Loads dropped DLL 2 IoCs
pid Process 1496 rundll32.exe 1416 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 created C:\Program Files (x86)\Microsoft\DesktopLayer.exe rundll32Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe rundll32Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\pxB67.tmp rundll32Srv.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\GPU iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\PageSetup iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{FBCDA321-6988-11ED-A03D-460E09B1FADA} = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "375792239" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IntelliForms iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IETld\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\InternetRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1312 DesktopLayer.exe 1312 DesktopLayer.exe 1312 DesktopLayer.exe 1312 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 296 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 296 iexplore.exe 296 iexplore.exe 1164 IEXPLORE.EXE 1164 IEXPLORE.EXE 1164 IEXPLORE.EXE 1164 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 1468 wrote to memory of 1496 1468 rundll32.exe 27 PID 1468 wrote to memory of 1496 1468 rundll32.exe 27 PID 1468 wrote to memory of 1496 1468 rundll32.exe 27 PID 1468 wrote to memory of 1496 1468 rundll32.exe 27 PID 1468 wrote to memory of 1496 1468 rundll32.exe 27 PID 1468 wrote to memory of 1496 1468 rundll32.exe 27 PID 1468 wrote to memory of 1496 1468 rundll32.exe 27 PID 1496 wrote to memory of 1416 1496 rundll32.exe 28 PID 1496 wrote to memory of 1416 1496 rundll32.exe 28 PID 1496 wrote to memory of 1416 1496 rundll32.exe 28 PID 1496 wrote to memory of 1416 1496 rundll32.exe 28 PID 1416 wrote to memory of 1312 1416 rundll32Srv.exe 29 PID 1416 wrote to memory of 1312 1416 rundll32Srv.exe 29 PID 1416 wrote to memory of 1312 1416 rundll32Srv.exe 29 PID 1416 wrote to memory of 1312 1416 rundll32Srv.exe 29 PID 1312 wrote to memory of 296 1312 DesktopLayer.exe 30 PID 1312 wrote to memory of 296 1312 DesktopLayer.exe 30 PID 1312 wrote to memory of 296 1312 DesktopLayer.exe 30 PID 1312 wrote to memory of 296 1312 DesktopLayer.exe 30 PID 296 wrote to memory of 1164 296 iexplore.exe 32 PID 296 wrote to memory of 1164 296 iexplore.exe 32 PID 296 wrote to memory of 1164 296 iexplore.exe 32 PID 296 wrote to memory of 1164 296 iexplore.exe 32
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\92b8bc7045f8749d165db8d995089593097fa6fb1ef704410844e648c3b53a90.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1468 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\92b8bc7045f8749d165db8d995089593097fa6fb1ef704410844e648c3b53a90.dll,#12⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1496 -
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:1416 -
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:1312 -
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:296 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:296 CREDAT:275457 /prefetch:26⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1164
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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
MD56248d79f345f230f6f24821832a76dd4
SHA15ec4f5940c41b927bd8c56c44fe734a13fc3e3ce
SHA2562120940a6a265016ba53da839d0dce27d9c560c7840ec8de2f3f3ede5ab953a0
SHA512b8ca28704be936fa40da85d78c3e969ac1a3b13846f6340440af17936af27ce79c24eb882ba162adfee9af57cfdd1be2a2beb133809e374084cb4ac9ed53d3a0
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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