Analysis
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max time kernel
137s -
max time network
132s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
21-01-2021 07:13
Static task
static1
Behavioral task
behavioral1
Sample
f0t0s.dll
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
f0t0s.dll
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
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Target
f0t0s.dll
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Size
141KB
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MD5
eecfc005c040236b5818d7e8f775ffed
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SHA1
42bb1cfe2532023f6a099328e7a8f08dcd145231
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SHA256
cd773a8e18731c4d551faf1dcc8eb050c7eac19c9758a145f91c1dfa79361db8
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SHA512
ad9e6f52e5e2920369a003c98539c212e9ce839ff211cf3059468ba565fce345277611b893e8c2f546108cb9cd921c20c32ec8da5ce78de298b738f7b2221cf1
Score
10/10
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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Drops file in Windows directory 1 IoCs
Processes:
regsvr32.exedescription ioc process File opened for modification C:\Windows\ regsvr32.exe -
Modifies Internet Explorer Phishing Filter 1 TTPs 2 IoCs
Processes:
iexplore.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\PhishingFilter iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\PhishingFilter\ClientSupported_MigrationTime = 7fd9c04391add601 iexplore.exe -
Processes:
iexplore.exeiexplore.exeiexplore.exeIEXPLORE.EXEiexplore.exeIEXPLORE.EXEIEXPLORE.EXEdescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\MINIE iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3646214604" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{04898484-5BC1-11EB-B59A-42BBCFED91E6} = "0" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000001cad0ccd232972468e753df42302a60a00000000020000000000106600000001000020000000c49f9621680e2de6002e0df25c25ec7460b70ea7b56690f7cea02828b68bf243000000000e800000000200002000000018cedae11e504250d3fbc3bcb75790f658e6feeb138e3d15172a9183221d0b78200000000550d39b6755febf50787230c8096a2f2476147ec87fd6c69b756227fe5359a8400000006137194be3dc613bf95252bdb08940d4900cc18396fe4dced42657f854f80c8e294e1a2476fa6b2f64b88039fd85e5ae3bac7332e367ef84e5da6d382c3b10cf iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 401f08e4cdefd601 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30863309" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = f00deaeacdefd601 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{34EDBDBE-5BC1-11EB-B59A-42BBCFED91E6} = "0" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 00cf24e4cdefd601 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000001cad0ccd232972468e753df42302a60a00000000020000000000106600000001000020000000337c5c2c7548ca3ea101ad24783718a5e3ed02300292ac2e0a94dcd98dc57fa1000000000e800000000200002000000048be8e3872bd0daf664d923814f08b3faec12abaab04285b59027fc3c00003c220000000a185d950b0eaa4a934031230296a48626df72fa3281362adcca1e476597c3e2a40000000af1520323822eb8fa13637b6199b136c4fcb8e8c5108161c990ac7c7efe61d036d4894325e530b7f2052952bedaf486defc94272406136f64c22442b43e41217 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000001cad0ccd232972468e753df42302a60a0000000002000000000010660000000100002000000018e35ef51a8836c2bf3a14e6bb999e8fec4ccf50ccd823114ef4e36f90964ebe000000000e800000000200002000000048ca8d61b6ef94f2bc3b91ea55344ea770275c08eded97d7c8bb2fa854128b9c20000000e2a8800ef3fb6600c7a64e6e0f9ec2c27660a1ba2de294170a98ebd7ccbe791e400000009be52e405c02bbacd3cbf7226a82c24693e9bef43d04b9b2410b59de08992ae582c5cf32b97c2be74cda341163230019e7162798d631af0363ff11df346c7087 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\MINIE iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{4A4B10A7-5BC1-11EB-B59A-42BBCFED91E6} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30863309" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000001cad0ccd232972468e753df42302a60a00000000020000000000106600000001000020000000aa64e0599036fd5ea95c266ed538b84476010433657d782c871b6290781c37ee000000000e8000000002000020000000f9a9dafbd27c9d84f0ec5d9fa3c11d7f101a6af25cadaeeac2f8cf9ff60377f42000000037e479e5ce124fcfdfe1817451993c1d8720b64f0fb3920d41650785a94139c34000000018c30446fc1b9adff64b195560f8767a04e9c24b6e359054e9c42338c32564b95775cadff5ffd587d8f49ff02d81823d6e61ad0685e54bcd8c8cb9f4608dd453 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 10c25500ceefd601 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3646214604" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\MINIE iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\MINIE iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{27F23037-5BC1-11EB-B59A-42BBCFED91E6} = "0" iexplore.exe -
Suspicious use of FindShellTrayWindow 4 IoCs
Processes:
iexplore.exeiexplore.exeiexplore.exeiexplore.exepid process 2944 iexplore.exe 736 iexplore.exe 3336 iexplore.exe 1700 iexplore.exe -
Suspicious use of SetWindowsHookEx 16 IoCs
Processes:
iexplore.exeIEXPLORE.EXEiexplore.exeIEXPLORE.EXEiexplore.exeIEXPLORE.EXEiexplore.exeIEXPLORE.EXEpid process 2944 iexplore.exe 2944 iexplore.exe 2624 IEXPLORE.EXE 2624 IEXPLORE.EXE 736 iexplore.exe 736 iexplore.exe 1948 IEXPLORE.EXE 1948 IEXPLORE.EXE 3336 iexplore.exe 3336 iexplore.exe 908 IEXPLORE.EXE 908 IEXPLORE.EXE 1700 iexplore.exe 1700 iexplore.exe 1156 IEXPLORE.EXE 1156 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
regsvr32.exeiexplore.exeiexplore.exeiexplore.exeiexplore.exedescription pid process target process PID 576 wrote to memory of 1840 576 regsvr32.exe regsvr32.exe PID 576 wrote to memory of 1840 576 regsvr32.exe regsvr32.exe PID 576 wrote to memory of 1840 576 regsvr32.exe regsvr32.exe PID 2944 wrote to memory of 2624 2944 iexplore.exe IEXPLORE.EXE PID 2944 wrote to memory of 2624 2944 iexplore.exe IEXPLORE.EXE PID 2944 wrote to memory of 2624 2944 iexplore.exe IEXPLORE.EXE PID 736 wrote to memory of 1948 736 iexplore.exe IEXPLORE.EXE PID 736 wrote to memory of 1948 736 iexplore.exe IEXPLORE.EXE PID 736 wrote to memory of 1948 736 iexplore.exe IEXPLORE.EXE PID 3336 wrote to memory of 908 3336 iexplore.exe IEXPLORE.EXE PID 3336 wrote to memory of 908 3336 iexplore.exe IEXPLORE.EXE PID 3336 wrote to memory of 908 3336 iexplore.exe IEXPLORE.EXE PID 1700 wrote to memory of 1156 1700 iexplore.exe IEXPLORE.EXE PID 1700 wrote to memory of 1156 1700 iexplore.exe IEXPLORE.EXE PID 1700 wrote to memory of 1156 1700 iexplore.exe IEXPLORE.EXE
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\f0t0s.dll1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\f0t0s.dll2⤵
- Drops file in Windows directory
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe" -Embedding1⤵
- 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:2944 CREDAT:82945 /prefetch:22⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe" -Embedding1⤵
- 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:736 CREDAT:82945 /prefetch:22⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe" -Embedding1⤵
- 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:3336 CREDAT:82945 /prefetch:22⤵
- Suspicious use of SetWindowsHookEx
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe" -Embedding1⤵
- Modifies Internet Explorer Phishing Filter
- 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:1700 CREDAT:82945 /prefetch:22⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/908-7-0x0000000000000000-mapping.dmp
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memory/1156-8-0x0000000000000000-mapping.dmp
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memory/1840-2-0x0000000000000000-mapping.dmp
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memory/1840-4-0x0000000000400000-0x0000000000429000-memory.dmpFilesize
164KB
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memory/1840-3-0x0000000001090000-0x0000000001091000-memory.dmpFilesize
4KB
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memory/1948-6-0x0000000000000000-mapping.dmp
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memory/2624-5-0x0000000000000000-mapping.dmp