Analysis Overview
SHA256
ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122
Threat Level: Known bad
The file ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122 was found to be: Known bad.
Malicious Activity Summary
Lockbit family
Rule to detect Lockbit 3.0 ransomware Windows payload
Lockbit
Renames multiple (600) files with added filename extension
Renames multiple (314) files with added filename extension
Deletes itself
Reads user/profile data of web browsers
Executes dropped EXE
Loads dropped DLL
Drops desktop.ini file(s)
Suspicious use of NtSetInformationThreadHideFromDebugger
Drops file in System32 directory
Sets desktop wallpaper using registry
Enumerates physical storage devices
Unsigned PE
Modifies registry class
Suspicious behavior: RenamesItself
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Modifies Control Panel
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-14 04:21
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 04:21
Reported
2024-03-14 04:24
Platform
win7-20240221-en
Max time kernel
151s
Max time network
164s
Command Line
Signatures
Lockbit
Renames multiple (314) files with added filename extension
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.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-1-5-21-778096762-2241304387-192235952-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | N/A |
| File opened for modification | C:\$Recycle.Bin\S-1-5-21-778096762-2241304387-192235952-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\j3ncKbrq7.bmp" | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\j3ncKbrq7.bmp" | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
Enumerates physical storage devices
Modifies Control Panel
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000\Control Panel\Desktop\WallpaperStyle = "10" | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000\Control Panel\Desktop | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\.j3ncKbrq7 | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\.j3ncKbrq7\ = "j3ncKbrq7" | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\j3ncKbrq7\DefaultIcon | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\j3ncKbrq7 | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\j3ncKbrq7\DefaultIcon\ = "C:\\ProgramData\\j3ncKbrq7.ico" | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
| N/A | N/A | C:\ProgramData\AAA1.tmp | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe
"C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe"
C:\ProgramData\AAA1.tmp
"C:\ProgramData\AAA1.tmp"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\AAA1.tmp >> NUL
Network
Files
memory/884-0-0x0000000002310000-0x0000000002350000-memory.dmp
C:\$Recycle.Bin\S-1-5-21-778096762-2241304387-192235952-1000\desktop.ini
| MD5 | 510244ba36e758b62da2ffde7b887c19 |
| SHA1 | 1e6687e895327844a1d3e37cfb369c04c0b566b5 |
| SHA256 | 37b9fa9a098e548a7e146150549510a8b13607ab6cd946c3e8d51154f88d5033 |
| SHA512 | 7b3e7133089af12aef7fda325a17e955ead1c3928d60dea08813e287bcf5483c06a28058314426cc0484ada7ab8dc11d287c36faad27b34ce0f1edd576d8429a |
F:\$RECYCLE.BIN\S-1-5-21-778096762-2241304387-192235952-1000\CCCCCCCCCCC
| MD5 | 3928517b6be2d032a287bae809b39311 |
| SHA1 | 1408d23851b4906fa86b52e71ea5131a056877a2 |
| SHA256 | a54fffefac9873e6ecb9fe9478afef1fef7e130848da68eb483640fb570a6661 |
| SHA512 | 28502eff259980c79ed2272b879664380d5f5b5cccc55472e709b069b3924280180d71c53051bced7d920d804637e0c3a66f09cdcf0f4dfffc3f60faa50fac08 |
C:\j3ncKbrq7.README.txt
| MD5 | 3f38195a47b5f3eea6814f887d10a9ea |
| SHA1 | 60991392ee9c025c5602f6ee88f0937c58c16cf0 |
| SHA256 | dccea726e9b48b399779440dd565fa986d36ba9dcd132277a727c95dde2c4caa |
| SHA512 | df653cdd375bea8ce2ef4104c18ca08e55ff14e7a8f554ac76297032d6dba8e724a45f0128497ea90f5b1007d0c06c7451e1773a1896bf67e41d7507f5b57cea |
\ProgramData\AAA1.tmp
| MD5 | 294e9f64cb1642dd89229fff0592856b |
| SHA1 | 97b148c27f3da29ba7b18d6aee8a0db9102f47c9 |
| SHA256 | 917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2 |
| SHA512 | b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf |
memory/2760-832-0x000000007EFA0000-0x000000007EFA1000-memory.dmp
memory/2760-833-0x0000000000260000-0x00000000002A0000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
| MD5 | 6ead5fa98dff59480b4e2202ec37c9e1 |
| SHA1 | a143e8d80a6c98c5c2c3f1403e9689f98e66711d |
| SHA256 | 926d23112e3e31ab372b11ebb47be53f821164e15541aac8813e6250bb0da2fa |
| SHA512 | 77d9eea5b4df7cb3cca18bfcc8087eabe812e8dcfea5c7f23d794a717f5a3d111649117742975deccbee6dfc8bebe524fa3a96e830326c1ea1320e64babcfde9 |
memory/2760-839-0x0000000000260000-0x00000000002A0000-memory.dmp
memory/2760-842-0x000000007EF80000-0x000000007EF81000-memory.dmp
memory/2760-843-0x000000007EF20000-0x000000007EF21000-memory.dmp
memory/2760-866-0x000000007EF60000-0x000000007EF61000-memory.dmp
memory/2760-865-0x000000007EF40000-0x000000007EF41000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-14 04:21
Reported
2024-03-14 04:24
Platform
win10v2004-20240226-en
Max time kernel
147s
Max time network
157s
Command Line
Signatures
Lockbit
Renames multiple (600) 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-1-5-21-2727153400-192325109-1870347593-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | N/A |
| File opened for modification | F:\$RECYCLE.BIN\S-1-5-21-2727153400-192325109-1870347593-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.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 |
| File created | C:\Windows\system32\spool\PRINTERS\PPnxl31yh2q05hk7f01a3_nanl.TMP | C:\Windows\system32\printfilterpipelinesvc.exe | N/A |
| File created | C:\Windows\system32\spool\PRINTERS\PPyspk9kicu0xk2x95yy9xiylub.TMP | C:\Windows\system32\printfilterpipelinesvc.exe | N/A |
| File created | C:\Windows\system32\spool\PRINTERS\PPzy6hx3k_ck0xpl5ny1s59pcfb.TMP | C:\Windows\system32\printfilterpipelinesvc.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\.j3ncKbrq7 | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\.j3ncKbrq7\ = "j3ncKbrq7" | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\j3ncKbrq7\DefaultIcon | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\j3ncKbrq7 | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\j3ncKbrq7\DefaultIcon\ = "C:\\ProgramData\\j3ncKbrq7.ico" | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4884 wrote to memory of 212 | N/A | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | C:\Windows\splwow64.exe |
| PID 4884 wrote to memory of 212 | N/A | C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe | C:\Windows\splwow64.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe
"C:\Users\Admin\AppData\Local\Temp\ba0eefdfbd1421d37d47f3feaae8e768a4679d6b544bb97f5237319e8ab0b122.exe"
C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
C:\Windows\system32\printfilterpipelinesvc.exe
C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 72.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 138.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.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 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.241.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 174.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 42.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 176.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 5.173.189.20.in-addr.arpa | udp |
Files
memory/4884-0-0x0000000003180000-0x0000000003190000-memory.dmp
memory/4884-1-0x0000000003180000-0x0000000003190000-memory.dmp
memory/4884-2-0x0000000003180000-0x0000000003190000-memory.dmp
C:\$Recycle.Bin\S-1-5-21-2727153400-192325109-1870347593-1000\desktop.ini
| MD5 | b972f9d15fb3736233a5deaad36cc717 |
| SHA1 | bbe877e76cbefe77201f9aa5881de50bb14c6273 |
| SHA256 | 5a4e54fad1b51382ad8435af8e5c82f1d23b0c80c15ad766ccd32a55867f781e |
| SHA512 | 8b9db97b9bfd5ad008e0c7e7d01c3fcecadc0255110bedbb7f645d7d771efbfddc5ad4ebc99acee28a2da2f28bafde6a636be83e2ad1e3e7bc81c8c23044bb30 |
F:\$RECYCLE.BIN\S-1-5-21-2727153400-192325109-1870347593-1000\DDDDDDDDDDD
| MD5 | b5b2736405e53f77f98ce21a1e58c8a3 |
| SHA1 | 022a7a25e10fc3a218a743b2d846534116ecfb00 |
| SHA256 | 2452e85e8bae91eebfa0eb2a149a238262f8d679008b910a2021f8c83a41de48 |
| SHA512 | 062ba61ecce4f2d8695742ba8d6c29688678b5da7f53a1448f98a4f21d110d6736651bf2608c08f4b4b5a9c33363017908b41460f1fe667e2e56df41a8a97f3f |
C:\j3ncKbrq7.README.txt
| MD5 | f964d56bc1e004a0faf927e047194535 |
| SHA1 | bc35bae6defe3d1e49b4e16c9f601e7a5cc8eb2e |
| SHA256 | e7c7cadd331c672d2f03f784d431980221051cda1abe860b637d7e8ada7a1e61 |
| SHA512 | 24f318f175b90fb1f9644d5becce7ade996003c7bf6ebe675f191694c6e537f29481e511f64769cb405c7a2edf14123984946488eb52a1daf24a9ec9d580a56d |
memory/4884-2734-0x0000000003180000-0x0000000003190000-memory.dmp
memory/4884-2735-0x0000000003180000-0x0000000003190000-memory.dmp
memory/4884-2736-0x0000000003180000-0x0000000003190000-memory.dmp