Analysis
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max time kernel
151s -
max time network
150s -
platform
windows7_x64 -
resource
win7-en-20211014 -
submitted
19-11-2021 17:35
Static task
static1
Behavioral task
behavioral1
Sample
Sample_5a2ea1b1c301d804e6dd924f.bin.exe
Resource
win7-en-20211014
Behavioral task
behavioral2
Sample
Sample_5a2ea1b1c301d804e6dd924f.bin.exe
Resource
win10-en-20211014
General
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Target
Sample_5a2ea1b1c301d804e6dd924f.bin.exe
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Size
81KB
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MD5
645d25f0d9f89b7b8a48b078e84501b7
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SHA1
7ffd6f6416e103591ff6ead7532843afd698e103
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SHA256
c01657ae6e2f1fd94f247fbfc7dee9c701db142db2a3813c93ede6c633dd8029
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SHA512
5334a34422ce4bb42332337d33e3193c2313907df2e265607fe25d9b7a0fc78dc252173494cb17347bbe499993bda7ff872912ba88ef693a13e5aaae7e1943ac
Malware Config
Signatures
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Processes:
iexplore.exeIEXPLORE.EXEdescription ioc process Set value (data) \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\InternetRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\LowRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\IETld\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\IntelliForms iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{505F7D81-4968-11EC-ADBE-4ECD28260268} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\GPU iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\PageSetup iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe -
Modifies registry class 2 IoCs
Processes:
rundll32.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache rundll32.exe -
Opens file in notepad (likely ransom note) 1 IoCs
Processes:
NOTEPAD.EXEpid process 764 NOTEPAD.EXE -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
AUDIODG.EXEdescription pid process Token: 33 1708 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 1708 AUDIODG.EXE Token: 33 1708 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 1708 AUDIODG.EXE -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid process 328 iexplore.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
Processes:
iexplore.exeIEXPLORE.EXEpid process 328 iexplore.exe 328 iexplore.exe 588 IEXPLORE.EXE 588 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exeSample_5a2ea1b1c301d804e6dd924f.bin.exeiexplore.exedescription pid process target process PID 1480 wrote to memory of 764 1480 rundll32.exe NOTEPAD.EXE PID 1480 wrote to memory of 764 1480 rundll32.exe NOTEPAD.EXE PID 1480 wrote to memory of 764 1480 rundll32.exe NOTEPAD.EXE PID 1588 wrote to memory of 328 1588 Sample_5a2ea1b1c301d804e6dd924f.bin.exe iexplore.exe PID 1588 wrote to memory of 328 1588 Sample_5a2ea1b1c301d804e6dd924f.bin.exe iexplore.exe PID 1588 wrote to memory of 328 1588 Sample_5a2ea1b1c301d804e6dd924f.bin.exe iexplore.exe PID 1588 wrote to memory of 328 1588 Sample_5a2ea1b1c301d804e6dd924f.bin.exe iexplore.exe PID 328 wrote to memory of 588 328 iexplore.exe IEXPLORE.EXE PID 328 wrote to memory of 588 328 iexplore.exe IEXPLORE.EXE PID 328 wrote to memory of 588 328 iexplore.exe IEXPLORE.EXE PID 328 wrote to memory of 588 328 iexplore.exe IEXPLORE.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\Sample_5a2ea1b1c301d804e6dd924f.bin.exe"C:\Users\Admin\AppData\Local\Temp\Sample_5a2ea1b1c301d804e6dd924f.bin.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe" https://www.bitcoin.com/2⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:328 CREDAT:275457 /prefetch:23⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
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C:\Windows\explorer.exe"C:\Windows\explorer.exe"1⤵
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x5981⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Desktop\StopCompress.lock1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\StopCompress.lock2⤵
- Opens file in notepad (likely ransom note)
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/328-64-0x0000000000000000-mapping.dmp
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memory/588-65-0x0000000000000000-mapping.dmp
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memory/764-62-0x0000000000000000-mapping.dmp
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memory/996-60-0x000007FEFC371000-0x000007FEFC373000-memory.dmpFilesize
8KB
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memory/1588-55-0x0000000000E80000-0x0000000000E81000-memory.dmpFilesize
4KB
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memory/1588-57-0x0000000075BA1000-0x0000000075BA3000-memory.dmpFilesize
8KB
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memory/1588-58-0x0000000000B80000-0x0000000000B81000-memory.dmpFilesize
4KB
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memory/1588-59-0x0000000000B85000-0x0000000000B96000-memory.dmpFilesize
68KB