Analysis Overview
SHA256
be60e274bdefe322071aa6373c39b72361b79104537e8c96c2ad6e2ec5aa1aa2
Threat Level: Known bad
The file sm0k3s.exe was found to be: Known bad.
Malicious Activity Summary
Lockbit
SmokeLoader
Rule to detect Lockbit 3.0 ransomware Windows payload
Renames multiple (494) files with added filename extension
Reads user/profile data of web browsers
Executes dropped EXE
Drops desktop.ini file(s)
Suspicious use of SetThreadContext
Suspicious use of NtSetInformationThreadHideFromDebugger
Enumerates physical storage devices
Suspicious use of SendNotifyMessage
Suspicious use of AdjustPrivilegeToken
Modifies registry class
Suspicious use of FindShellTrayWindow
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Checks SCSI registry key(s)
Uses Task Scheduler COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-27 09:12
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-27 09:12
Reported
2024-02-27 09:13
Platform
win11-20240221-en
Max time kernel
72s
Max time network
50s
Command Line
Signatures
Lockbit
Rule to detect Lockbit 3.0 ransomware Windows payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
SmokeLoader
Renames multiple (494) files with added filename extension
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\124.exe | N/A |
| N/A | N/A | C:\ProgramData\1BC0.tmp | N/A |
Reads user/profile data of web browsers
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File opened for modification | F:\$RECYCLE.BIN\S-1-5-21-3594324687-1993884830-4019639329-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\124.exe | N/A |
| File opened for modification | C:\$Recycle.Bin\S-1-5-21-3594324687-1993884830-4019639329-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\124.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\1BC0.tmp | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1456 set thread context of 4700 | N/A | C:\Users\Admin\AppData\Local\Temp\sm0k3s.exe | C:\Windows\SysWOW64\cmd.exe |
Enumerates physical storage devices
Checks SCSI registry key(s)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000 | C:\Windows\System32\Taskmgr.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A | C:\Windows\System32\Taskmgr.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName | C:\Windows\System32\Taskmgr.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key enumerated | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI | C:\Windows\SysWOW64\cmd.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\ | N/A | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ | N/A | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ | N/A | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\Taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\System32\Taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\System32\Taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\System32\Taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\System32\Taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\System32\Taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\System32\Taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\System32\Taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\System32\Taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\System32\Taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\System32\Taskmgr.exe | N/A |
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| N/A | N/A | C:\Windows\System32\Taskmgr.exe | N/A |
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| N/A | N/A | C:\Windows\System32\Taskmgr.exe | N/A |
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| N/A | N/A | C:\Windows\System32\Taskmgr.exe | N/A |
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Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\sm0k3s.exe
"C:\Users\Admin\AppData\Local\Temp\sm0k3s.exe"
C:\Windows\System32\Taskmgr.exe
"C:\Windows\System32\Taskmgr.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\SysWow64\cmd.exe"
C:\Users\Admin\AppData\Local\Temp\124.exe
C:\Users\Admin\AppData\Local\Temp\124.exe
C:\ProgramData\1BC0.tmp
"C:\ProgramData\1BC0.tmp"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\1BC0.tmp >> NUL
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | kkudndkwatnfevcaqeefytqnh.top | udp |
| NL | 193.222.96.164:80 | kkudndkwatnfevcaqeefytqnh.top | tcp |
Files
memory/1456-0-0x0000000000400000-0x00000000005F0000-memory.dmp
memory/1456-1-0x0000000000400000-0x00000000005F0000-memory.dmp
memory/1020-3-0x000001B77A6A0000-0x000001B77A6A1000-memory.dmp
memory/1020-2-0x000001B77A6A0000-0x000001B77A6A1000-memory.dmp
memory/1020-4-0x000001B77A6A0000-0x000001B77A6A1000-memory.dmp
memory/1020-8-0x000001B77A6A0000-0x000001B77A6A1000-memory.dmp
memory/1020-9-0x000001B77A6A0000-0x000001B77A6A1000-memory.dmp
memory/1020-10-0x000001B77A6A0000-0x000001B77A6A1000-memory.dmp
memory/1020-11-0x000001B77A6A0000-0x000001B77A6A1000-memory.dmp
memory/1020-13-0x000001B77A6A0000-0x000001B77A6A1000-memory.dmp
memory/1020-12-0x000001B77A6A0000-0x000001B77A6A1000-memory.dmp
memory/1020-14-0x000001B77A6A0000-0x000001B77A6A1000-memory.dmp
memory/1456-15-0x0000000000400000-0x00000000005F0000-memory.dmp
memory/1456-18-0x0000000000400000-0x00000000005F0000-memory.dmp
memory/4700-19-0x0000000000400000-0x000000000040B000-memory.dmp
memory/1456-20-0x0000000000400000-0x00000000005F0000-memory.dmp
memory/4700-21-0x0000000000400000-0x000000000040B000-memory.dmp
memory/3240-22-0x0000000006930000-0x0000000006946000-memory.dmp
memory/4700-23-0x0000000000400000-0x000000000040B000-memory.dmp
memory/1456-27-0x0000000000400000-0x00000000005F0000-memory.dmp
memory/1456-28-0x0000000000400000-0x00000000005F0000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\124.exe
| MD5 | 9b7027b10ee698c1588def9cbcdb03d8 |
| SHA1 | 0804a8a4a2dcb427df8923a5e6647c49ff786f41 |
| SHA256 | e4e6567b1861ca066a60c3257baaa5ef495694ca66b87647b36008500c935bcd |
| SHA512 | bf27f03d5cefcc2d6ec4dbc60ffd28255324e08b78dd0b3da5a31a3d578fa718768d826d7e656b2ff626fef8651dbed9b61b4f5b48df5aa81921763552226041 |
memory/5048-36-0x0000000002950000-0x0000000002960000-memory.dmp
C:\$Recycle.Bin\S-1-5-21-3594324687-1993884830-4019639329-1000\AAAAAAAAAAA
| MD5 | c448a81f1e1699fbf1d1517d3d03db60 |
| SHA1 | 6358ab4b23f4829ba0461bdf154c0eecd76d707c |
| SHA256 | 71acc824e8a616c9b2bca79d837f4264805c841eb626f18d8e1c7a7f00248fda |
| SHA512 | aa4846f155742022523eeef38ae400951ac2201e3b143454dda7e14353a74b8eb855f6b08761356096fe294fbcb046b7bcf17ca35698ceec0ded5d7105e57ce3 |
memory/5048-93-0x0000000002950000-0x0000000002960000-memory.dmp
C:\iBUgUvnWk.README.txt
| MD5 | 7c3d34a06bb11ab8383e8afa4c60434d |
| SHA1 | f87e16c6e6d36e70f436228aa3244dfb76f7fc2c |
| SHA256 | 2639d017985bafc4a1b213f5b9cf9409a16bc4b01ece1952bc4360a03bf3066a |
| SHA512 | 7969f6b2b9b5586fedbda52b895704fe2ba31bf7914a04dea790d2787326c66cfb644baf4c913adad22929d4a1e1f3e5d17fc369672f411d857aa456c3ab57bb |
F:\$RECYCLE.BIN\S-1-5-21-3594324687-1993884830-4019639329-1000\DDDDDDDDDDD
| MD5 | 3578f5eddd7f64c4e01ef90ce320b348 |
| SHA1 | 4aac5cbf63b23411e289d0810caa66122435254b |
| SHA256 | d02cb260d6f521674afa893ed4a811e2ee0dd6f22e48fe89c09096669217f8a1 |
| SHA512 | 6fb1df6e4714197ecc5ec7bcd97019fc4914fa4b125584a87d9a8991b1a2fd8faa75f46010a1e13cf28d74d17d29b875a3fec16970dd615291aeafb77235665a |
memory/5048-39-0x0000000002950000-0x0000000002960000-memory.dmp
C:\Users\Admin\AppData\Local\D3DSCache\ecbf0d5a3a180bb\F4EB2D6C-ED2B-4BDD-AD9D-F913287E6768.val
| MD5 | 4f55be8451c1090c2a54a50d79243cfb |
| SHA1 | f1a94bc446b6ae32300ada858fb251667a17b71d |
| SHA256 | 1b8257869915ac04445cb4bfdc0e0fc03db80efb96da98c49e7cbc4097bc28a2 |
| SHA512 | b87403fc4ab05cd4dd092d0707cd0dd22f927c65dcf73bce6f6bf2731f0572e089697908eeb377617c9f2531fdb3a495087feafb31871ea9a6f472a45d9d20f6 |
C:\ProgramData\1BC0.tmp
| MD5 | 294e9f64cb1642dd89229fff0592856b |
| SHA1 | 97b148c27f3da29ba7b18d6aee8a0db9102f47c9 |
| SHA256 | 917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2 |
| SHA512 | b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf |
memory/3956-2704-0x000000007FE70000-0x000000007FE71000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\BBBBBBB
| MD5 | c843ba2d931b883740c180182a08c463 |
| SHA1 | 42c901fb1d581ac5853c193b5c826da41196ff5f |
| SHA256 | 07e70eac68c242c0c98cf1a5f38fa76b1a03428927d1851624a5955e2539e9f8 |
| SHA512 | ecd0d22a3582223d20210d17d7b9112d123201af5890135ab7c8404afb15b068a3b729b280b0e6dd975cab1bbf6d574c7f30be2b16a4aee97c15db1594a7a46f |
memory/3956-2706-0x0000000002740000-0x0000000002750000-memory.dmp
memory/3956-2730-0x000000007FDF0000-0x000000007FDF1000-memory.dmp
memory/3956-2711-0x000000007FE50000-0x000000007FE51000-memory.dmp
memory/3956-2736-0x000000007FE10000-0x000000007FE11000-memory.dmp
memory/3956-2737-0x000000007FE30000-0x000000007FE31000-memory.dmp