Overview
overview
10Static
static
10LockBit-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...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...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...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
3Analysis
-
max time kernel
67s -
max time network
24s -
platform
windows7_x64 -
resource
win7-20240729-en -
resource tags
arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system -
submitted
26-11-2024 18:04
Behavioral task
behavioral1
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral3
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3Decryptor.exe
Resource
win7-20241010-en
Behavioral task
behavioral4
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3Decryptor.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral5
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3_pass.exe
Resource
win7-20241010-en
Behavioral task
behavioral6
Sample
LockBit-Black-Builder-main/LockBit30/Build/LB3_pass.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral7
Sample
LockBit-Black-Builder-main/LockBit30/builder.exe
Resource
win7-20240903-en
Behavioral task
behavioral8
Sample
LockBit-Black-Builder-main/LockBit30/builder.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral9
Sample
LockBit-Black-Builder-main/LockBit30/keygen.exe
Resource
win7-20240903-en
Behavioral task
behavioral10
Sample
LockBit-Black-Builder-main/LockBit30/keygen.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral11
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3.exe
Resource
win7-20241023-en
Behavioral task
behavioral12
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral13
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3Decryptor.exe
Resource
win7-20241010-en
Behavioral task
behavioral14
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3Decryptor.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral15
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3_pass.exe
Resource
win7-20240903-en
Behavioral task
behavioral16
Sample
LockBit-Black-Builder-main/LockBit3Builder/Build/LB3_pass.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral17
Sample
LockBit-Black-Builder-main/LockBit3Builder/builder.exe
Resource
win7-20240903-en
Behavioral task
behavioral18
Sample
LockBit-Black-Builder-main/LockBit3Builder/builder.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral19
Sample
LockBit-Black-Builder-main/LockBit3Builder/keygen.exe
Resource
win7-20240903-en
Behavioral task
behavioral20
Sample
LockBit-Black-Builder-main/LockBit3Builder/keygen.exe
Resource
win10v2004-20241007-en
General
-
Target
LockBit-Black-Builder-main/LockBit30/Build/LB3.exe
-
Size
153KB
-
MD5
c73eac0c837c3c5caca3a885f46c17d9
-
SHA1
a0ca9511b40c9c2451986ce179016ec4014e9adb
-
SHA256
e609bf8406b61613f3e605d277cf445059974a4c71c3edd09fffae86a3c5dbfe
-
SHA512
157c92e561cd18876ab60faf8a3d8e62633e7750accb965e86f3202b0d5ff902d3ae51fb41592d9be22672e67a713291e469a09be57e6f77dd6343090324792a
-
SSDEEP
3072:xqJogYkcSNm9V7D2YRLCm8ZdqVAxrMismEm8T:xq2kc4m9tDlhLqb
Malware Config
Extracted
C:\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.
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Lockbit family
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Renames multiple (371) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Deletes itself 1 IoCs
pid Process 2376 FD62.tmp -
Executes dropped EXE 1 IoCs
pid Process 2376 FD62.tmp -
Loads dropped DLL 1 IoCs
pid Process 2540 LB3.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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Drops desktop.ini file(s) 2 IoCs
description ioc Process File opened for modification C:\$Recycle.Bin\S-1-5-21-2703099537-420551529-3771253338-1000\desktop.ini LB3.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2703099537-420551529-3771253338-1000\desktop.ini LB3.exe -
Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
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Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\ZImkTWSLZ.bmp" LB3.exe Set value (str) \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\ZImkTWSLZ.bmp" LB3.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 2376 FD62.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 LB3.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language FD62.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-1-5-21-2703099537-420551529-3771253338-1000\Control Panel\Desktop LB3.exe Set value (str) \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Control Panel\Desktop\WallpaperStyle = "10" LB3.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.ZImkTWSLZ LB3.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.ZImkTWSLZ\ = "ZImkTWSLZ" LB3.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ZImkTWSLZ\DefaultIcon LB3.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ZImkTWSLZ LB3.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\ZImkTWSLZ\DefaultIcon\ = "C:\\ProgramData\\ZImkTWSLZ.ico" LB3.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1848 NOTEPAD.EXE -
Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 2540 LB3.exe 2540 LB3.exe 2540 LB3.exe 2540 LB3.exe 2540 LB3.exe 2540 LB3.exe 2540 LB3.exe 2540 LB3.exe 2540 LB3.exe 2540 LB3.exe 2540 LB3.exe 2540 LB3.exe 2540 LB3.exe 2540 LB3.exe -
Suspicious behavior: RenamesItself 26 IoCs
pid Process 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp 2376 FD62.tmp -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeAssignPrimaryTokenPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeDebugPrivilege 2540 LB3.exe Token: 36 2540 LB3.exe Token: SeImpersonatePrivilege 2540 LB3.exe Token: SeIncBasePriorityPrivilege 2540 LB3.exe Token: SeIncreaseQuotaPrivilege 2540 LB3.exe Token: 33 2540 LB3.exe Token: SeManageVolumePrivilege 2540 LB3.exe Token: SeProfSingleProcessPrivilege 2540 LB3.exe Token: SeRestorePrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeSystemProfilePrivilege 2540 LB3.exe Token: SeTakeOwnershipPrivilege 2540 LB3.exe Token: SeShutdownPrivilege 2540 LB3.exe Token: SeDebugPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeBackupPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe Token: SeSecurityPrivilege 2540 LB3.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2540 wrote to memory of 2376 2540 LB3.exe 31 PID 2540 wrote to memory of 2376 2540 LB3.exe 31 PID 2540 wrote to memory of 2376 2540 LB3.exe 31 PID 2540 wrote to memory of 2376 2540 LB3.exe 31 PID 2540 wrote to memory of 2376 2540 LB3.exe 31 PID 2376 wrote to memory of 3064 2376 FD62.tmp 32 PID 2376 wrote to memory of 3064 2376 FD62.tmp 32 PID 2376 wrote to memory of 3064 2376 FD62.tmp 32 PID 2376 wrote to memory of 3064 2376 FD62.tmp 32
Processes
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C:\Users\Admin\AppData\Local\Temp\LockBit-Black-Builder-main\LockBit30\Build\LB3.exe"C:\Users\Admin\AppData\Local\Temp\LockBit-Black-Builder-main\LockBit30\Build\LB3.exe"1⤵
- Loads dropped DLL
- 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:2540 -
C:\ProgramData\FD62.tmp"C:\ProgramData\FD62.tmp"2⤵
- Deletes itself
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:2376 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\FD62.tmp >> NUL3⤵
- System Location Discovery: System Language Discovery
PID:3064
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-
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\ZImkTWSLZ.README.txt1⤵
- Opens file in notepad (likely ransom note)
PID:1848
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x1481⤵PID:1572
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
-
Filesize
129B
MD5a8fbec7e796cacec3a19874d870b261b
SHA18261454843f956ffc1ce9140803d7e7ac82ff10e
SHA2560a74422de43f63d48af81de81802be749fbc7537915d8124d7fbf7f6d2da0e81
SHA512fcc500559ee41437e21008eae812c1895ab7f40d52e641219ba2df3ff4699a9fa08ad3c806f0f2d5d40204c01a056f1e9e08e82bbd038b5ce1c9c75fb3ac09af
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Filesize
153KB
MD5594bc8cbc0e6b6fb2e4742af8f30b5a3
SHA181265187ccbf9bb158d32b225d17025a49ea7dd2
SHA256faedd3f78a67ca685a18e26f3c38d07d6b52e159107baa7dc7afae6733794f04
SHA5120f39ffac94813d9ab6496b4c309fad4fd6c036f770b4140072db593258997f246798ace3ac4c61beffb9c3271157da4e006d8588222ce384026f4cd27c531aef
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Filesize
6KB
MD5c99286949a888ffaf1ece9528ace6980
SHA165352b807fbdb745271347bf8fb839513a98beb6
SHA2562c31a092980065973477e7101de9b7a63cc130c270c1c0c9087f2675a85620f6
SHA51283fe7297520b78d3cd862f6a3f4f0565eac479a74218af712a66db7c1d0c10d2d85fe79df66eac3187cb6f256d088c0a68a96f8193a2c2c168e49d3326970321
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Filesize
129B
MD575ddc3a6acb1865c4c1a5c4b9a674ed6
SHA1a16597aaca37c505bd2e089899fc8b0bfbf04432
SHA25663331b45ef44d64b9e311277d32a1265d58fc207794e72e88cec4c50e00995a2
SHA51209fe02ff2be64d0281ccbd840c747b974dd1902160f029bd0bc6de6cbd432a6dcf7a93ea8b3e32100329ac83d5be00f4990c2b8e89cc59385f82889a18d8e6cf
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Filesize
14KB
MD5294e9f64cb1642dd89229fff0592856b
SHA197b148c27f3da29ba7b18d6aee8a0db9102f47c9
SHA256917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
SHA512b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf