Overview
overview
10Static
static
10Lockbit-Ra...er.exe
windows7-x64
9Lockbit-Ra...er.exe
windows10-2004-x64
9Lockbit-Ra...er.exe
windows7-x64
9Lockbit-Ra...er.exe
windows10-2004-x64
9Lockbit-Ra...en.exe
windows7-x64
9Lockbit-Ra...en.exe
windows10-2004-x64
9Lockbit-Ra...ME.vbs
windows7-x64
1Lockbit-Ra...ME.vbs
windows10-2004-x64
1Analysis
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max time kernel
117s -
max time network
117s -
platform
windows7_x64 -
resource
win7-20241023-en -
resource tags
arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system -
submitted
26-11-2024 14:48
Behavioral task
behavioral1
Sample
Lockbit-Ransomware-Builder-main/Builder.exe
Resource
win7-20241010-en
windows7-x64
Behavioral task
behavioral2
Sample
Lockbit-Ransomware-Builder-main/Builder.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
Behavioral task
behavioral3
Sample
Lockbit-Ransomware-Builder-main/Decrypter.exe
Resource
win7-20241023-en
windows7-x64
Behavioral task
behavioral4
Sample
Lockbit-Ransomware-Builder-main/Decrypter.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
Behavioral task
behavioral5
Sample
Lockbit-Ransomware-Builder-main/KeyGen.exe
Resource
win7-20241010-en
windows7-x64
Behavioral task
behavioral6
Sample
Lockbit-Ransomware-Builder-main/KeyGen.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
Behavioral task
behavioral7
Sample
Lockbit-Ransomware-Builder-main/README.vbs
Resource
win7-20240903-en
windows7-x64
Behavioral task
behavioral8
Sample
Lockbit-Ransomware-Builder-main/README.vbs
Resource
win10v2004-20241007-en
windows10-2004-x64
General
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Target
Lockbit-Ransomware-Builder-main/Decrypter.exe
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Size
146KB
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MD5
39c9477cf131ca5ccc05c8871c0e10e6
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SHA1
07b2581b2cb41053d09c4bb896aaabc1d28f2a7b
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SHA256
939281eac1c6e5aa2e4238a1e545e67b2609c15f517474b2a5133bb64fe9c1eb
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SHA512
689fd585232031f746b1573d3ed66ac329420611d4e1092ce6952b49ab0c168091726bd02189a4e183d1196ced4f51953e4eb25a5219a36f86d8f6761da9f129
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SSDEEP
1536:xzICS4AAwczUUf8y8gvMH+1zGSNAojMP95D1xDqk3sA9atm8z+L8QBfuSoyAMjwT:KqJogYkcSNm9V7D7352v+L8DnyAewT
Malware Config
Signatures
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Renames multiple (344) 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 952 CBA8.tmp -
Executes dropped EXE 1 IoCs
pid Process 952 CBA8.tmp -
Loads dropped DLL 1 IoCs
pid Process 2092 Decrypter.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-1-5-21-1163522206-1469769407-485553996-1000\desktop.ini Decrypter.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-1163522206-1469769407-485553996-1000\desktop.ini Decrypter.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-1-5-21-1163522206-1469769407-485553996-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\1pvSvxmZY.bmp" Decrypter.exe Set value (str) \REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\1pvSvxmZY.bmp" Decrypter.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 952 CBA8.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 CBA8.tmp Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Decrypter.exe -
Modifies Control Panel 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Control Panel\Desktop Decrypter.exe Set value (str) \REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Control Panel\Desktop\WallpaperStyle = "10" Decrypter.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.1pvSvxmZY Decrypter.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.1pvSvxmZY\ = "1pvSvxmZY" Decrypter.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\1pvSvxmZY\DefaultIcon Decrypter.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\1pvSvxmZY Decrypter.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\1pvSvxmZY\DefaultIcon\ = "C:\\ProgramData\\1pvSvxmZY.ico" Decrypter.exe -
Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 2092 Decrypter.exe 2092 Decrypter.exe 2092 Decrypter.exe 2092 Decrypter.exe 2092 Decrypter.exe 2092 Decrypter.exe 2092 Decrypter.exe 2092 Decrypter.exe 2092 Decrypter.exe 2092 Decrypter.exe 2092 Decrypter.exe 2092 Decrypter.exe 2092 Decrypter.exe 2092 Decrypter.exe -
Suspicious behavior: RenamesItself 26 IoCs
pid Process 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp 952 CBA8.tmp -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeAssignPrimaryTokenPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeDebugPrivilege 2092 Decrypter.exe Token: 36 2092 Decrypter.exe Token: SeImpersonatePrivilege 2092 Decrypter.exe Token: SeIncBasePriorityPrivilege 2092 Decrypter.exe Token: SeIncreaseQuotaPrivilege 2092 Decrypter.exe Token: 33 2092 Decrypter.exe Token: SeManageVolumePrivilege 2092 Decrypter.exe Token: SeProfSingleProcessPrivilege 2092 Decrypter.exe Token: SeRestorePrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeSystemProfilePrivilege 2092 Decrypter.exe Token: SeTakeOwnershipPrivilege 2092 Decrypter.exe Token: SeShutdownPrivilege 2092 Decrypter.exe Token: SeDebugPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeBackupPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe Token: SeSecurityPrivilege 2092 Decrypter.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2092 wrote to memory of 952 2092 Decrypter.exe 33 PID 2092 wrote to memory of 952 2092 Decrypter.exe 33 PID 2092 wrote to memory of 952 2092 Decrypter.exe 33 PID 2092 wrote to memory of 952 2092 Decrypter.exe 33 PID 2092 wrote to memory of 952 2092 Decrypter.exe 33 PID 952 wrote to memory of 948 952 CBA8.tmp 34 PID 952 wrote to memory of 948 952 CBA8.tmp 34 PID 952 wrote to memory of 948 952 CBA8.tmp 34 PID 952 wrote to memory of 948 952 CBA8.tmp 34
Processes
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C:\Users\Admin\AppData\Local\Temp\Lockbit-Ransomware-Builder-main\Decrypter.exe"C:\Users\Admin\AppData\Local\Temp\Lockbit-Ransomware-Builder-main\Decrypter.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:2092 -
C:\ProgramData\CBA8.tmp"C:\ProgramData\CBA8.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:952 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\CBA8.tmp >> NUL3⤵
- System Location Discovery: System Language Discovery
PID:948
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x14c1⤵PID:528
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
129B
MD5eb787fb2d377cb3002c9a80544d81ab9
SHA1574c5e7c4cc48b5d00b904086598f2815a974bb7
SHA256fbff62d057fff3b3e45aeb5c3e4519505938d0596d4529da9c9dfb55bb69f784
SHA51239a28836690620a8e73387e1ca3854419c91e636e1084ed59d8342eb8bb23ee2f0ae91b74d9ace725a817fca71e4f55d97abf71d6889c24ac9650065c41ecdda
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Filesize
348B
MD59810eed5ecd966874ebeb398ac6531ed
SHA117d2e2bc15df652734b79185cb323e652559fd6a
SHA25653183e5ed0cf42bed46b17c9dcc92ea49737bb57dce34f1e20675a913796566e
SHA512b26ca61461ed8b09f037e33d209cd0a22959b89e3e7895e057f544010fd5ae037e4fa76311763c121cd6e8b3050de22fa7d2163b4d9cf40585e14f5024e0cb79
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Filesize
14KB
MD5294e9f64cb1642dd89229fff0592856b
SHA197b148c27f3da29ba7b18d6aee8a0db9102f47c9
SHA256917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
SHA512b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf
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Filesize
146KB
MD5db61c243271d3038b7adec85fbc33f05
SHA1ccf95a306106f15cce1ea730726995f7c3d04d28
SHA2564a010f61c75c9de9e50d6bb3a7437be2f9ca91d74fb47c6b9bbbcfe9d17f9764
SHA5123ccf5206b22f72c8520b48e38815de4abc1ef70eb36d98098f19920c04d0283b12cdd46a3dcd07f7324cde5ffee756eb19aa995fcfffb12b78ace43c9a5815b1
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Filesize
129B
MD555a145db2ad4f146e45deaf29b15fd9e
SHA14f5c361d48d114b8df15e20db47e2d31bcb08474
SHA256dbf47c0676c0b41560fd492735e58e3e1946409004b01f9cc2ac6c02c44f320a
SHA512ee05b1c6342109bec5c5d86f7cc78c6d54a582076473b7655f563932d0e764ae3664b26fb4835d524c08159863e9ad79a3fdba83917e124d4ab86d3486b2c4c3