Analysis Overview
SHA256
5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816
Threat Level: Known bad
The file 5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816 was found to be: Known bad.
Malicious Activity Summary
Lockbit
Lockbit family
Rule to detect Lockbit 3.0 ransomware Windows payload
Renames multiple (348) files with added filename extension
Renames multiple (598) files with added filename extension
Executes dropped EXE
Reads user/profile data of web browsers
Deletes itself
Loads dropped DLL
Drops desktop.ini file(s)
Sets desktop wallpaper using registry
Suspicious use of NtSetInformationThreadHideFromDebugger
Drops file in System32 directory
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious behavior: RenamesItself
Modifies Control Panel
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-14 04:12
Signatures
Lockbit family
Rule to detect Lockbit 3.0 ransomware Windows payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-14 04:12
Reported
2024-03-14 04:15
Platform
win7-20240220-en
Max time kernel
120s
Max time network
121s
Command Line
Signatures
Lockbit
Renames multiple (348) files with added filename extension
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | 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-1-5-21-2721934792-624042501-2768869379-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
| File opened for modification | C:\$Recycle.Bin\S-1-5-21-2721934792-624042501-2768869379-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\sNLnicEVl.bmp" | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\sNLnicEVl.bmp" | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
Enumerates physical storage devices
Modifies Control Panel
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Control Panel\Desktop\WallpaperStyle = "10" | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Control Panel\Desktop | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\.sNLnicEVl\ = "sNLnicEVl" | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\sNLnicEVl\DefaultIcon | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\sNLnicEVl | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\sNLnicEVl\DefaultIcon\ = "C:\\ProgramData\\sNLnicEVl.ico" | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\.sNLnicEVl | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
| N/A | N/A | C:\ProgramData\2EAE.tmp | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe
"C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe"
C:\ProgramData\2EAE.tmp
"C:\ProgramData\2EAE.tmp"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\2EAE.tmp >> NUL
C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x14c
Network
Files
memory/2268-0-0x0000000000410000-0x0000000000450000-memory.dmp
C:\$Recycle.Bin\S-1-5-21-2721934792-624042501-2768869379-1000\EEEEEEEEEEE
| MD5 | 1527e602c83cfc6570f4de16035051dd |
| SHA1 | 60d8e37aed7e6fdd1be1d5b83c863d6e7e75992d |
| SHA256 | 72ab9e6503e26f788c3beabb35f2384cbdf511ba9bec8961963c3b7d85bb122a |
| SHA512 | 43ceb96d968974f051ed39d3d8998695fbf8c6f9f8ab65ff51fef14f220f8623a89a4509fafd27aaa8dc96adbe0e3a3b90cd27f57d57f6ee5c6008aa391a6dbb |
F:\$RECYCLE.BIN\S-1-5-21-2721934792-624042501-2768869379-1000\DDDDDDDDDDD
| MD5 | 82a7e38d1fa28b7660f639ea0daea8fc |
| SHA1 | f101dedd4b8e78b3e2fb2125b7755e37de229f83 |
| SHA256 | 6a7a4a27dfa45dac5c79655a20f7df11d227557de01e73716b18d2bc8bd01485 |
| SHA512 | 8db9a70ac00f23da5622499d73e44b9bc16ea161b0a301bb586e8103f0c8d81543dd0ae356c21fae2d72f213d3f1033ed5952f29bd38e4446360f78b22178d38 |
C:\sNLnicEVl.README.txt
| MD5 | 885e5b5a0b7100068d7359be5025b479 |
| SHA1 | 413e60216fd28e306c8ac910f7d317a88f3ea9e3 |
| SHA256 | 3f8a1cf73e0f9fae26c30e80ff47c409799b697685cf31688e17e9f77e8e8ade |
| SHA512 | 804a5949d5d0cde73fb4c667b34cc14266a3dee9691277201f3bfdab99bfe1f8445ff64db8f5f2410528f4f9b96a5f069f90aaede998aa97489ea364f32e9b26 |
\ProgramData\2EAE.tmp
| MD5 | 294e9f64cb1642dd89229fff0592856b |
| SHA1 | 97b148c27f3da29ba7b18d6aee8a0db9102f47c9 |
| SHA256 | 917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2 |
| SHA512 | b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf |
memory/3036-874-0x000000007EFA0000-0x000000007EFA1000-memory.dmp
memory/3036-875-0x0000000000300000-0x0000000000340000-memory.dmp
memory/3036-879-0x0000000000300000-0x0000000000340000-memory.dmp
memory/3036-881-0x000000007EF80000-0x000000007EF81000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
| MD5 | 2d2d9cd0b622414a449c37ad22414283 |
| SHA1 | b83f2945f57908e4703719247e72700fe59870a1 |
| SHA256 | b30210759a4fe4cc438f2ba29250ff1a034f0845857fc6664ed45020da848a87 |
| SHA512 | c77efb551b64294c54fccec5a5adc8c63b38cd4da8066e35905281ec45bafef51e353c15d2c0103907da2f6e19079e5c68a092bb41c9ed71fe146ce10a619340 |
memory/3036-882-0x000000007EF20000-0x000000007EF21000-memory.dmp
memory/3036-908-0x000000007EF60000-0x000000007EF61000-memory.dmp
memory/3036-907-0x000000007EF40000-0x000000007EF41000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-14 04:12
Reported
2024-03-14 04:15
Platform
win10v2004-20240226-en
Max time kernel
148s
Max time network
159s
Command Line
Signatures
Lockbit
Renames multiple (598) files with added filename extension
Reads user/profile data of web browsers
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File opened for modification | C:\$Recycle.Bin\S-1-5-21-513485977-2495024337-1260977654-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
| File opened for modification | F:\$RECYCLE.BIN\S-1-5-21-513485977-2495024337-1260977654-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\spool\PRINTERS\00002.SPL | C:\Windows\splwow64.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\.sNLnicEVl\ = "sNLnicEVl" | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\sNLnicEVl\DefaultIcon | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\sNLnicEVl | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\sNLnicEVl\DefaultIcon\ = "C:\\ProgramData\\sNLnicEVl.ico" | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\.sNLnicEVl | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 852 wrote to memory of 4932 | N/A | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | C:\Windows\splwow64.exe |
| PID 852 wrote to memory of 4932 | N/A | C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe | C:\Windows\splwow64.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe
"C:\Users\Admin\AppData\Local\Temp\5735ea71ae9c58fe79c5049056421cf68600d6afdac1c441ae02291637779816.exe"
C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 134.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.241.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 211.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 122.10.44.20.in-addr.arpa | udp |
Files
memory/852-0-0x0000000002800000-0x0000000002810000-memory.dmp
memory/852-1-0x0000000002800000-0x0000000002810000-memory.dmp
memory/852-2-0x0000000002800000-0x0000000002810000-memory.dmp
C:\$Recycle.Bin\S-1-5-21-513485977-2495024337-1260977654-1000\desktop.ini
| MD5 | b267f4591d6432c2ea3842f36cb23890 |
| SHA1 | 43c0ad7c7bb11faa849898ca9525eee4a86e6c31 |
| SHA256 | 2ffb59c364a33737ce182b1983dfdc1f0987f38c88d80f1ad79264c6f5c37189 |
| SHA512 | 48ec83b833451e8d6331d717ebd1e818a9b11113b61144a3c982660cf343be63344cee1e4ba6ca867ae3e03deadc53b1ebdfc626286ead8c5fbae7ce3ec351fa |
F:\$RECYCLE.BIN\S-1-5-21-513485977-2495024337-1260977654-1000\DDDDDDDDDDD
| MD5 | 91318b3e599e5e5becec27d3a103d3b5 |
| SHA1 | 476dfaddc4f4dc4483de2c75572bc9818faa21be |
| SHA256 | 285e0f063e3ce8402c922a9bf059b0b08b795ad9998952e8b96ca97d7c641f6b |
| SHA512 | d5203b90f8fec7908cb8577bfe538927c50fb744d868bf1c94bc298db2d3495e7d6f1ae60fc6548fb05d721b43926d0e619bf1f0c674773b006272fe72492981 |
C:\Users\sNLnicEVl.README.txt
| MD5 | 885e5b5a0b7100068d7359be5025b479 |
| SHA1 | 413e60216fd28e306c8ac910f7d317a88f3ea9e3 |
| SHA256 | 3f8a1cf73e0f9fae26c30e80ff47c409799b697685cf31688e17e9f77e8e8ade |
| SHA512 | 804a5949d5d0cde73fb4c667b34cc14266a3dee9691277201f3bfdab99bfe1f8445ff64db8f5f2410528f4f9b96a5f069f90aaede998aa97489ea364f32e9b26 |
memory/852-2726-0x0000000002800000-0x0000000002810000-memory.dmp
memory/852-2727-0x0000000002800000-0x0000000002810000-memory.dmp