Overview
overview
10Static
static
10LockBit-Bl...ld.bat
windows7-x64
3LockBit-Bl...ld.bat
windows10-2004-x64
3LockBit-Bl...B3.exe
windows7-x64
10LockBit-Bl...B3.exe
windows10-2004-x64
10LockBit-Bl...or.exe
windows7-x64
7LockBit-Bl...or.exe
windows10-2004-x64
7LockBit-Bl...in.dll
windows7-x64
10LockBit-Bl...in.dll
windows10-2004-x64
7LockBit-Bl...32.dll
windows7-x64
3LockBit-Bl...32.dll
windows10-2004-x64
3LockBit-Bl...ss.dll
windows7-x64
10LockBit-Bl...ss.dll
windows10-2004-x64
10LockBit-Bl...ss.exe
windows7-x64
10LockBit-Bl...ss.exe
windows10-2004-x64
10LockBit-Bl...er.exe
windows7-x64
1LockBit-Bl...er.exe
windows10-2004-x64
3LockBit-Bl...en.exe
windows7-x64
1LockBit-Bl...en.exe
windows10-2004-x64
3LockBit-Bl...ld.bat
windows7-x64
3LockBit-Bl...ld.bat
windows10-2004-x64
3LockBit-Bl...B3.exe
windows7-x64
10LockBit-Bl...B3.exe
windows10-2004-x64
10LockBit-Bl...or.exe
windows7-x64
7LockBit-Bl...or.exe
windows10-2004-x64
7LockBit-Bl...in.dll
windows7-x64
10LockBit-Bl...in.dll
windows10-2004-x64
7LockBit-Bl...32.dll
windows7-x64
3LockBit-Bl...32.dll
windows10-2004-x64
3LockBit-Bl...ss.dll
windows7-x64
10LockBit-Bl...ss.dll
windows10-2004-x64
10LockBit-Bl...ss.exe
windows7-x64
10LockBit-Bl...ss.exe
windows10-2004-x64
10Analysis
-
max time kernel
121s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20241023-en -
resource tags
arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system -
submitted
25/03/2025, 13:38
Behavioral task
behavioral1
Sample
LockBit-Black-Builder-main/LockBit30/Build.bat
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
LockBit-Black-Builder-main/LockBit30/Build.bat
Resource
win10v2004-20250314-en
Behavioral task
behavioral3
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3.exe
Resource
win7-20240903-en
Behavioral task
behavioral4
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3.exe
Resource
win10v2004-20250314-en
Behavioral task
behavioral5
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3Decryptor.exe
Resource
win7-20240903-en
Behavioral task
behavioral6
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3Decryptor.exe
Resource
win10v2004-20250314-en
Behavioral task
behavioral7
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3_ReflectiveDll_DllMain.dll
Resource
win7-20241023-en
Behavioral task
behavioral8
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3_ReflectiveDll_DllMain.dll
Resource
win10v2004-20250314-en
Behavioral task
behavioral9
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3_Rundll32.dll
Resource
win7-20240729-en
Behavioral task
behavioral10
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3_Rundll32.dll
Resource
win10v2004-20250314-en
Behavioral task
behavioral11
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3_Rundll32_pass.dll
Resource
win7-20241010-en
Behavioral task
behavioral12
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3_Rundll32_pass.dll
Resource
win10v2004-20250314-en
Behavioral task
behavioral13
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3_pass.exe
Resource
win7-20240903-en
Behavioral task
behavioral14
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3_pass.exe
Resource
win10v2004-20250314-en
Behavioral task
behavioral15
Sample
LockBit-Black-Builder-main/LockBit30/builder.exe
Resource
win7-20250207-en
Behavioral task
behavioral16
Sample
LockBit-Black-Builder-main/LockBit30/builder.exe
Resource
win10v2004-20250313-en
Behavioral task
behavioral17
Sample
LockBit-Black-Builder-main/LockBit30/keygen.exe
Resource
win7-20240903-en
Behavioral task
behavioral18
Sample
LockBit-Black-Builder-main/LockBit30/keygen.exe
Resource
win10v2004-20250313-en
Behavioral task
behavioral19
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build.bat
Resource
win7-20240903-en
Behavioral task
behavioral20
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build.bat
Resource
win10v2004-20250314-en
Behavioral task
behavioral21
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3.exe
Resource
win7-20241023-en
Behavioral task
behavioral22
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3.exe
Resource
win10v2004-20250314-en
Behavioral task
behavioral23
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3Decryptor.exe
Resource
win7-20240903-en
Behavioral task
behavioral24
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3Decryptor.exe
Resource
win10v2004-20250314-en
Behavioral task
behavioral25
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3_ReflectiveDll_DllMain.dll
Resource
win7-20250207-en
Behavioral task
behavioral26
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3_ReflectiveDll_DllMain.dll
Resource
win10v2004-20250314-en
Behavioral task
behavioral27
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3_Rundll32.dll
Resource
win7-20241010-en
Behavioral task
behavioral28
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3_Rundll32.dll
Resource
win10v2004-20250314-en
Behavioral task
behavioral29
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3_Rundll32_pass.dll
Resource
win7-20250207-en
Behavioral task
behavioral30
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3_Rundll32_pass.dll
Resource
win10v2004-20250313-en
Behavioral task
behavioral31
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3_pass.exe
Resource
win7-20240903-en
Behavioral task
behavioral32
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3_pass.exe
Resource
win10v2004-20250314-en
General
-
Target
LockBit-Black-Builder-main/LockBit30/Build/LB3_ReflectiveDll_DllMain.dll
-
Size
106KB
-
MD5
2ecc319574b76994e76c4f971c820362
-
SHA1
8f3d04cab7c6be2220860ec391d75ba2f8f17b33
-
SHA256
123797c18b044fb5aeba5dcccaf9ef1df0b7553413e9433876f1f94b8cd0584f
-
SHA512
39c63668d424ff9efa625a82312edf5a30f7ca3edd896bd6ef1857ced02e5462cf191af54b6e55388b844fa5e50f77e3a6ce5b5983f61eb57a45c4b2fbb3567e
-
SSDEEP
1536:LzICS4A30TY1kUS/U2ztdS1I6DdL9Ta16CX4VtgYfC3zHZbhuMGCS:0J0TYyUS/U2RgGWL9+joVtHfilfd
Malware Config
Extracted
C:\Users\ZImkTWSLZ.README.txt
lockbit
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
http://lockbitapt.uz
http://lockbitapt2yfbt7lchxejug47kmqvqqxvvjpqkmevv4l3azl3gy6pyd.onion.ly
http://lockbitapt5x4zkjbcqmz6frdhecqqgadevyiwqxukksspnlidyvd7qd.onion.ly
http://lockbitapt6vx57t3eeqjofwgcglmutr3a35nygvokja5uuccip4ykyd.onion.ly
http://lockbitapt34kvrip6xojylohhxrwsvpzdffgs5z4pbbsywnzsbdguqd.onion.ly
http://lockbitaptc2iq4atewz2ise62q63wfktyrl4qtwuk5qax262kgtzjqd.onion.ly
http://lockbitaptjpikdqjynvgozhgc6bgetgucdk5xjacozeaawihmoio6yd.onion.ly
http://lockbitaptq7ephv2oigdncfhtwhpqgwmqojnxqdyhprxxfpcllqdxad.onion.ly
http://lockbitaptstzf3er2lz6ku3xuifafq2yh5lmiqj5ncur6rtlmkteiqd.onion.ly
http://lockbitaptoofrpignlz6dt2wqqc5z3a4evjevoa3eqdfcntxad5lmyd.onion.ly
https://twitter.com/hashtag/lockbit?f=live
http://lockbitsupt7nr3fa6e7xyb73lk6bw6rcneqhoyblniiabj4uwvzapqd.onion
http://lockbitsupuhswh4izvoucoxsbnotkmgq6durg7kficg6u33zfvq3oyd.onion
http://lockbitsupn2h6be2cnqpvncyhj4rgmnwn44633hnzzmtxdvjoqlp7yd.onion
http://lockbitsupp.uz
https://tox.chat/download.html
Signatures
-
Lockbit
Ransomware family with multiple variants released since late 2019.
-
Lockbit family
-
Renames multiple (358) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
-
Executes dropped EXE 2 IoCs
pid Process 1596 BE02.tmp 848 BE8F.tmp -
Loads dropped DLL 2 IoCs
pid Process 2388 rundll32.exe 2388 rundll32.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
-
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\ZImkTWSLZ.bmp" rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\ZImkTWSLZ.bmp" rundll32.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 1596 BE02.tmp 848 BE8F.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 rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language BE8F.tmp Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Modifies Control Panel 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Control Panel\Desktop rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Control Panel\Desktop\WallpaperStyle = "10" rundll32.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.ZImkTWSLZ rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.ZImkTWSLZ\ = "ZImkTWSLZ" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ZImkTWSLZ\DefaultIcon rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ZImkTWSLZ rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\ZImkTWSLZ\DefaultIcon\ = "C:\\ProgramData\\ZImkTWSLZ.ico" rundll32.exe -
Suspicious behavior: EnumeratesProcesses 12 IoCs
pid Process 2388 rundll32.exe 2388 rundll32.exe 2388 rundll32.exe 2388 rundll32.exe 2388 rundll32.exe 2388 rundll32.exe 2388 rundll32.exe 2388 rundll32.exe 2388 rundll32.exe 2388 rundll32.exe 2388 rundll32.exe 2388 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeAssignPrimaryTokenPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeDebugPrivilege 2388 rundll32.exe Token: 36 2388 rundll32.exe Token: SeImpersonatePrivilege 2388 rundll32.exe Token: SeIncBasePriorityPrivilege 2388 rundll32.exe Token: SeIncreaseQuotaPrivilege 2388 rundll32.exe Token: 33 2388 rundll32.exe Token: SeManageVolumePrivilege 2388 rundll32.exe Token: SeProfSingleProcessPrivilege 2388 rundll32.exe Token: SeRestorePrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeSystemProfilePrivilege 2388 rundll32.exe Token: SeTakeOwnershipPrivilege 2388 rundll32.exe Token: SeShutdownPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeDebugPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeBackupPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe Token: SeSecurityPrivilege 2388 rundll32.exe -
Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 2596 wrote to memory of 2388 2596 rundll32.exe 30 PID 2596 wrote to memory of 2388 2596 rundll32.exe 30 PID 2596 wrote to memory of 2388 2596 rundll32.exe 30 PID 2596 wrote to memory of 2388 2596 rundll32.exe 30 PID 2596 wrote to memory of 2388 2596 rundll32.exe 30 PID 2596 wrote to memory of 2388 2596 rundll32.exe 30 PID 2596 wrote to memory of 2388 2596 rundll32.exe 30 PID 2388 wrote to memory of 1596 2388 rundll32.exe 33 PID 2388 wrote to memory of 1596 2388 rundll32.exe 33 PID 2388 wrote to memory of 1596 2388 rundll32.exe 33 PID 2388 wrote to memory of 1596 2388 rundll32.exe 33 PID 2388 wrote to memory of 1596 2388 rundll32.exe 33 PID 2388 wrote to memory of 848 2388 rundll32.exe 34 PID 2388 wrote to memory of 848 2388 rundll32.exe 34 PID 2388 wrote to memory of 848 2388 rundll32.exe 34 PID 2388 wrote to memory of 848 2388 rundll32.exe 34 PID 2388 wrote to memory of 848 2388 rundll32.exe 34 PID 848 wrote to memory of 1972 848 BE8F.tmp 35 PID 848 wrote to memory of 1972 848 BE8F.tmp 35 PID 848 wrote to memory of 1972 848 BE8F.tmp 35 PID 848 wrote to memory of 1972 848 BE8F.tmp 35
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\LockBit-Black-Builder-main\LockBit30\Build\LB3_ReflectiveDll_DllMain.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2596 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\LockBit-Black-Builder-main\LockBit30\Build\LB3_ReflectiveDll_DllMain.dll,#12⤵
- Loads dropped DLL
- 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:2388 -
C:\ProgramData\BE02.tmp"C:\ProgramData\BE02.tmp"3⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:1596
-
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C:\ProgramData\BE8F.tmp"C:\ProgramData\BE8F.tmp"3⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:848 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\BE8F.tmp >> NUL4⤵
- System Location Discovery: System Language Discovery
PID:1972
-
-
-
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x1481⤵PID:2456
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
6KB
MD539567c4340e03045a7aec5a112f265a0
SHA1633653de62438dae2fec4cd783922da8ece6f6ca
SHA25601ccefb4eac905d35033225dc81295005fa664c5e1427e794856f374e4c95aa3
SHA51282a82c1def04d1e7c75d644c0c070d5e7c2912fb53f2c344fda36c21200edd00ea0b39360f471b91147bd25f5570a4af8fbcacbd17900da7a9742d8c81a0d325
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Filesize
14KB
MD5294e9f64cb1642dd89229fff0592856b
SHA197b148c27f3da29ba7b18d6aee8a0db9102f47c9
SHA256917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
SHA512b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf