Analysis Overview
SHA256
6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630
Threat Level: Known bad
The file 6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630 was found to be: Known bad.
Malicious Activity Summary
Lockbit family
Lockbit
Rule to detect Lockbit 3.0 ransomware Windows payload
Renames multiple (577) files with added filename extension
Renames multiple (318) 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)
Drops file in System32 directory
Sets desktop wallpaper using registry
Suspicious use of NtSetInformationThreadHideFromDebugger
Unsigned PE
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious behavior: RenamesItself
Suspicious behavior: EnumeratesProcesses
Modifies Control Panel
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-14 04:14
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 04:14
Reported
2024-03-14 04:16
Platform
win7-20240221-en
Max time kernel
117s
Max time network
118s
Command Line
Signatures
Lockbit
Renames multiple (318) files with added filename extension
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.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-1-5-21-1298544033-3225604241-2703760938-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
| File opened for modification | C:\$Recycle.Bin\S-1-5-21-1298544033-3225604241-2703760938-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\hi3mgYt1D.bmp" | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\hi3mgYt1D.bmp" | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
Modifies Control Panel
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Control Panel\Desktop | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Control Panel\Desktop\WallpaperStyle = "10" | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\hi3mgYt1D | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\hi3mgYt1D\DefaultIcon\ = "C:\\ProgramData\\hi3mgYt1D.ico" | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\.hi3mgYt1D | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\.hi3mgYt1D\ = "hi3mgYt1D" | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\hi3mgYt1D\DefaultIcon | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
| N/A | N/A | C:\ProgramData\37C3.tmp | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe
"C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe"
C:\ProgramData\37C3.tmp
"C:\ProgramData\37C3.tmp"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\37C3.tmp >> NUL
C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x14c
Network
Files
memory/1984-0-0x00000000021E0000-0x0000000002220000-memory.dmp
C:\$Recycle.Bin\S-1-5-21-1298544033-3225604241-2703760938-1000\desktop.ini
| MD5 | ec6c6de479a04be858e6319edeb6e5c7 |
| SHA1 | 5e520170da8ff45214ba3a0f93ff58fdc16f25c2 |
| SHA256 | dbd7837095a36ef1c400da111955c71c070a0679fe9592d04dabe05ca3d2aa95 |
| SHA512 | 18848cfcbea50c3e19354570150eb91e23ad72fb75f912c1837cb32be1d66dc6e837e579aecf2f7c4e36293cf2a2af607f24cfa8b0398ee1a516ee9fbc06aa61 |
F:\$RECYCLE.BIN\S-1-5-21-1298544033-3225604241-2703760938-1000\GGGGGGGGGGG
| MD5 | 06ee046b7aac24113477cc82848d3367 |
| SHA1 | ef65c70e63fd0643edd1663d9617beafaf61947d |
| SHA256 | 6fb94df7edb026be1b6ab5c21d59b4a078d92489dbb2de94f830b18587b371cd |
| SHA512 | 1928cca43259391d489d79dcf9cba2a0f46b62ff8d5243115a981d004eab67905b61457046d44581bca0a5b73f57388c4129c78fe84d56041b7d2590fc9d1cd5 |
C:\hi3mgYt1D.README.txt
| MD5 | 170a331a9e66fd2a5c3de1277d081c7f |
| SHA1 | 149596b669db6c1ffe070bb0604bb14a36b7044b |
| SHA256 | 5c03309a0b042fa3145e72e67a214affaab86ad21b369e16f35b4103b7912dc5 |
| SHA512 | 01e8dad53711840540abcaf819cef042e525cdcb8544df97f030470c54caa69ba488a8dad6f2ec38d85b638720376c38ed56df90508a22cd916e3eaf9a5b7e4f |
\ProgramData\37C3.tmp
| MD5 | 294e9f64cb1642dd89229fff0592856b |
| SHA1 | 97b148c27f3da29ba7b18d6aee8a0db9102f47c9 |
| SHA256 | 917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2 |
| SHA512 | b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf |
memory/1256-844-0x000000007EFA0000-0x000000007EFA1000-memory.dmp
memory/1256-845-0x0000000000480000-0x00000000004C0000-memory.dmp
memory/1256-848-0x000000007EF80000-0x000000007EF81000-memory.dmp
memory/1256-849-0x000000007EF20000-0x000000007EF21000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
| MD5 | 9155c07a80befbf51aae144a4c402082 |
| SHA1 | 0d6819bb81d696b979bf1005e33b8e6bee9c0e40 |
| SHA256 | b9c9a5eed9a501c850f4b87013bc896b150577dade6454f5d0ea5dc2c72246bb |
| SHA512 | 735f934be446dced14e2854422a503bf9d694d01cbec37c0c75be78ed5948957fe16eab28def96b38f90878a93c10c890485d14461b655600b922bdcc9a467ba |
memory/1256-876-0x000000007EF40000-0x000000007EF41000-memory.dmp
memory/1256-877-0x000000007EF60000-0x000000007EF61000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-14 04:14
Reported
2024-03-14 04:16
Platform
win10v2004-20240226-en
Max time kernel
14s
Max time network
27s
Command Line
Signatures
Lockbit
Renames multiple (577) files with added filename extension
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\6E6A.tmp | N/A |
Reads user/profile data of web browsers
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File opened for modification | C:\$Recycle.Bin\S-1-5-21-3270530367-132075249-2153716227-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
| File opened for modification | F:\$RECYCLE.BIN\S-1-5-21-3270530367-132075249-2153716227-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\spool\PRINTERS\PPl6x6n0nlgs3b0ur0slhu7ac_.TMP | C:\Windows\system32\printfilterpipelinesvc.exe | N/A |
| File created | C:\Windows\system32\spool\PRINTERS\PP6duftjsdl0m5e0mp8qyotnosb.TMP | C:\Windows\system32\printfilterpipelinesvc.exe | N/A |
| File created | C:\Windows\system32\spool\PRINTERS\00002.SPL | C:\Windows\splwow64.exe | N/A |
| File created | C:\Windows\system32\spool\PRINTERS\PP1grf9exhdq1pv7r9okxrt659d.TMP | C:\Windows\system32\printfilterpipelinesvc.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\hi3mgYt1D.bmp" | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\hi3mgYt1D.bmp" | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
Modifies Control Panel
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\Desktop | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\Desktop\WallpaperStyle = "10" | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\.hi3mgYt1D | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\.hi3mgYt1D\ = "hi3mgYt1D" | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\hi3mgYt1D\DefaultIcon | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\hi3mgYt1D | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\hi3mgYt1D\DefaultIcon\ = "C:\\ProgramData\\hi3mgYt1D.ico" | C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.exe
"C:\Users\Admin\AppData\Local\Temp\6b4502d8ba3cff1a3139f72cdad863d53551b65b8c38d7b838d64212822e4630.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
C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
/insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{758F371A-98ED-4353-8C21-15B267A5A493}.xps" 133548632536560000
C:\ProgramData\6E6A.tmp
"C:\ProgramData\6E6A.tmp"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 136.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
Files
memory/1760-0-0x0000000003120000-0x0000000003130000-memory.dmp
memory/1760-1-0x0000000003120000-0x0000000003130000-memory.dmp
memory/1760-2-0x0000000003120000-0x0000000003130000-memory.dmp
C:\$Recycle.Bin\S-1-5-21-3270530367-132075249-2153716227-1000\desktop.ini
| MD5 | df9eb6c4ea9447532d2a11a9f855dae8 |
| SHA1 | 7b8306629ce8fd6a81062fbd1d69d418057b8c79 |
| SHA256 | b765817b30336638bfd64a1868685d509cc500ba026f8b87ba79980ca580e2cf |
| SHA512 | 0f42ec8f03d7a2b3d3aee8f55f724d909ccc22f67d8f510306aa8a32a55088596f10222d635c63acd908afdbd91214db53d815b796da94ba3f637d5e4cb3a0de |
F:\$RECYCLE.BIN\S-1-5-21-3270530367-132075249-2153716227-1000\DDDDDDDDDDD
| MD5 | 969c41c4c325e2d6805eae163d6b6081 |
| SHA1 | a70c6cb20460be906a264ad237f60c37da75881c |
| SHA256 | b29ed94e7a41146cd5bfacc411dec415cf08814d838f6d620401c2bc7645eb30 |
| SHA512 | 3fcc779d4fa57c7b7712a605e62a215ef4d49ab4b825f0359b94365251c69c82f166b55f2472ca76a3bd57e032661ca0d362fad5cc5556cdd2bf08298d8a3205 |
C:\hi3mgYt1D.README.txt
| MD5 | 444365121dee5baeaa1326e8fcdc087e |
| SHA1 | 758f11d7d406d5f07f3ed645d380640608d60f8e |
| SHA256 | fa7abba59c84417df94dd927be28d5c36505997957313e5d5c78410cf77d281d |
| SHA512 | 2c43bdd338a8883dbd34663bcde1899c3c19f2efd0dde75735a6b8fcabca3e6d5fa67f5854525ce89f73dedc911d3fa85e29ab91ee7794d1b80a22c71daa02d7 |
C:\ProgramData\6E6A.tmp
| MD5 | 294e9f64cb1642dd89229fff0592856b |
| SHA1 | 97b148c27f3da29ba7b18d6aee8a0db9102f47c9 |
| SHA256 | 917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2 |
| SHA512 | b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf |