Analysis
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max time kernel
110s -
max time network
111s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
28/11/2022, 02:48
Static task
static1
Behavioral task
behavioral1
Sample
ffb9ba821cd0568e49e14db738158167c451e4747871339875f47d10e105132d.exe
Resource
win7-20220812-en
General
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Target
ffb9ba821cd0568e49e14db738158167c451e4747871339875f47d10e105132d.exe
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Size
132KB
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MD5
acdb106a9198ea196969ddba272a460e
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SHA1
9d246c7c3a0ea14ebe888015596964440606748b
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SHA256
ffb9ba821cd0568e49e14db738158167c451e4747871339875f47d10e105132d
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SHA512
5397f6cd799ebb4623e73a5b5ad361977d5508bd3465fd84ce11af6ab2b37eca23e005efde70e84d1ac379373fc0171af722d6741cfd27023680ec1c121f3590
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SSDEEP
3072:fEJ4oxJrPhqrrm8Hj7ijhOHr3QVdAdjdrl2K98gXZsQ45GBdX8ckFQLGLCM:fIXxgGj5M/kFQLGLC
Malware Config
Signatures
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description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 29112022.exe -
Executes dropped EXE 1 IoCs
pid Process 1336 29112022.exe -
Loads dropped DLL 2 IoCs
pid Process 1944 ffb9ba821cd0568e49e14db738158167c451e4747871339875f47d10e105132d.exe 1944 ffb9ba821cd0568e49e14db738158167c451e4747871339875f47d10e105132d.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 29112022.exe -
Installs/modifies Browser Helper Object 2 TTPs 3 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\ 29112022.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\NoExplorer = "1" 29112022.exe Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects 29112022.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\PageSetup iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\InternetRegistry iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (data) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\LowRegistry iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "376467320" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\IETld\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\IntelliForms iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{CAE477F1-6FAC-11ED-991C-C6F54D7498C3} = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\GPU iexplore.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1296 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 1944 ffb9ba821cd0568e49e14db738158167c451e4747871339875f47d10e105132d.exe 1336 29112022.exe 1296 iexplore.exe 1296 iexplore.exe 648 IEXPLORE.EXE 648 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 1944 wrote to memory of 1336 1944 ffb9ba821cd0568e49e14db738158167c451e4747871339875f47d10e105132d.exe 27 PID 1944 wrote to memory of 1336 1944 ffb9ba821cd0568e49e14db738158167c451e4747871339875f47d10e105132d.exe 27 PID 1944 wrote to memory of 1336 1944 ffb9ba821cd0568e49e14db738158167c451e4747871339875f47d10e105132d.exe 27 PID 1944 wrote to memory of 1336 1944 ffb9ba821cd0568e49e14db738158167c451e4747871339875f47d10e105132d.exe 27 PID 1336 wrote to memory of 1104 1336 29112022.exe 30 PID 1336 wrote to memory of 1104 1336 29112022.exe 30 PID 1336 wrote to memory of 1104 1336 29112022.exe 30 PID 1336 wrote to memory of 1104 1336 29112022.exe 30 PID 1336 wrote to memory of 1104 1336 29112022.exe 30 PID 1336 wrote to memory of 1104 1336 29112022.exe 30 PID 1336 wrote to memory of 1104 1336 29112022.exe 30 PID 1336 wrote to memory of 1144 1336 29112022.exe 31 PID 1336 wrote to memory of 1144 1336 29112022.exe 31 PID 1336 wrote to memory of 1144 1336 29112022.exe 31 PID 1336 wrote to memory of 1144 1336 29112022.exe 31 PID 1336 wrote to memory of 1144 1336 29112022.exe 31 PID 1336 wrote to memory of 1144 1336 29112022.exe 31 PID 1336 wrote to memory of 1144 1336 29112022.exe 31 PID 1336 wrote to memory of 1296 1336 29112022.exe 32 PID 1336 wrote to memory of 1296 1336 29112022.exe 32 PID 1336 wrote to memory of 1296 1336 29112022.exe 32 PID 1336 wrote to memory of 1296 1336 29112022.exe 32 PID 1296 wrote to memory of 648 1296 iexplore.exe 33 PID 1296 wrote to memory of 648 1296 iexplore.exe 33 PID 1296 wrote to memory of 648 1296 iexplore.exe 33 PID 1296 wrote to memory of 648 1296 iexplore.exe 33 -
System policy modification 1 TTPs 4 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System 29112022.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 29112022.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Ext\CLSID 29112022.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Ext\CLSID\ = "1" 29112022.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\ffb9ba821cd0568e49e14db738158167c451e4747871339875f47d10e105132d.exe"C:\Users\Admin\AppData\Local\Temp\ffb9ba821cd0568e49e14db738158167c451e4747871339875f47d10e105132d.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1944 -
C:\Users\Admin\29112022.exe"C:\Users\Admin\29112022.exe"2⤵
- UAC bypass
- Executes dropped EXE
- Checks whether UAC is enabled
- Installs/modifies Browser Helper Object
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1336 -
C:\Windows\SysWOW64\regsvr32.exeC:\Windows\SysWOW64\regsvr32.exe /s c:\Users\Admin\vhsrecdc\vhsrecdc.dll3⤵PID:1104
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C:\Windows\SysWOW64\regsvr32.exeC:\Windows\system32\regsvr32.exe /s c:\Users\Admin\vhsrecdc\vhsrecdc.dll3⤵PID:1144
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"3⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1296 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1296 CREDAT:275457 /prefetch:24⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:648
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
132KB
MD5acdb106a9198ea196969ddba272a460e
SHA19d246c7c3a0ea14ebe888015596964440606748b
SHA256ffb9ba821cd0568e49e14db738158167c451e4747871339875f47d10e105132d
SHA5125397f6cd799ebb4623e73a5b5ad361977d5508bd3465fd84ce11af6ab2b37eca23e005efde70e84d1ac379373fc0171af722d6741cfd27023680ec1c121f3590
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Filesize
132KB
MD5acdb106a9198ea196969ddba272a460e
SHA19d246c7c3a0ea14ebe888015596964440606748b
SHA256ffb9ba821cd0568e49e14db738158167c451e4747871339875f47d10e105132d
SHA5125397f6cd799ebb4623e73a5b5ad361977d5508bd3465fd84ce11af6ab2b37eca23e005efde70e84d1ac379373fc0171af722d6741cfd27023680ec1c121f3590
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Filesize
106B
MD595e82e402d75842b9acfb6b6a35458fa
SHA13b40fc4e277564b1f7c35bb9ef5072f2f5931126
SHA256f2635a4317c9a086899079bed035f0ee1e2f12f59b5fb070d5a4f627e57f895d
SHA5121025cfc5963fac8829e3102705303adf1c671a9ac2d255f45b6255f1125c37321bd2d63a232387855ea3b7f8812615c21f6dda0a8d70855d807618a528f5e366
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Filesize
608B
MD5dcb908a1ebcea1b40b01b03717317e18
SHA17244c56f05d5ab044d6b1d410d72d0f93dbc48d1
SHA256200363b0b9d85840b6710eeb2db1bb0a4565b1b462e84333f4b66635dd7275a6
SHA512d849d240b8117eb28ecaf7679ce8336645a844dc67728bc358e7c1c000154d003081efe893e79aa8ffd6fe234e19a75a523bce32a3e9d5d389364582ff6c6e06
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Filesize
132KB
MD5acdb106a9198ea196969ddba272a460e
SHA19d246c7c3a0ea14ebe888015596964440606748b
SHA256ffb9ba821cd0568e49e14db738158167c451e4747871339875f47d10e105132d
SHA5125397f6cd799ebb4623e73a5b5ad361977d5508bd3465fd84ce11af6ab2b37eca23e005efde70e84d1ac379373fc0171af722d6741cfd27023680ec1c121f3590
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Filesize
132KB
MD5acdb106a9198ea196969ddba272a460e
SHA19d246c7c3a0ea14ebe888015596964440606748b
SHA256ffb9ba821cd0568e49e14db738158167c451e4747871339875f47d10e105132d
SHA5125397f6cd799ebb4623e73a5b5ad361977d5508bd3465fd84ce11af6ab2b37eca23e005efde70e84d1ac379373fc0171af722d6741cfd27023680ec1c121f3590