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Analysis
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max time kernel
143s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
23/01/2024, 18:31
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
lkb99.exe
Resource
win7-20231215-en
windows7-x64
14 signatures
150 seconds
Behavioral task
behavioral2
Sample
lkb99.exe
Resource
win10-20231220-en
windows10-1703-x64
18 signatures
150 seconds
Behavioral task
behavioral3
Sample
lkb99.exe
Resource
win10v2004-20231215-en
windows10-2004-x64
19 signatures
150 seconds
Behavioral task
behavioral4
Sample
lkb99.exe
Resource
win11-20231215-en
windows11-21h2-x64
18 signatures
150 seconds
General
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Target
lkb99.exe
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Size
552KB
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MD5
b4d493ac4428abf9aed55dc444d2073f
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SHA1
6948fd344891e36799a80d6828e42b09ca553b7a
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SHA256
41c611528db77b92eb0e0602215e63e6c2d7efbf1a11f980c514eb31ce9266c3
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SHA512
c4ab19333856e0c8f6a842c64967a9c1fc9ae3a24efc067b0cfe764ef4c8c97236a8afff64ebc983cade3e2775c93a3a35316bea9a6c9b1d4ecfa0acda224e75
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SSDEEP
6144:BXfHNiU8UC0QPfSfCSGSmBzpmlfdJqvAVB0koqAznCFJ+QSu5ClK0glKlriFT+s0:BX1iUhlQP6qX/qUnDC8ZC/wz
Score
10/10
Malware Config
Extracted
Path
C:\Program Files\dotnet\Restore-My-Files.txt
Family
lockbit
Ransom Note
All your important files are encrypted!
Any attempts to restore your files with the thrid-party software will be fatal for your files!
RESTORE YOU DATA POSIBLE ONLY BUYING private key from us.
There is only one way to get your files back:
1) Through a standard browser(FireFox, Chrome, Edge, Opera)
| 1. Open link http://lockbit-decryptor.top/?8841DD9B0AC925FFB94E28A3BAD76C80
| 2. Follow the instructions on this page
2) Through a Tor Browser - recommended
| 1. Download Tor browser - https://www.torproject.org/ and install it.
| 2. Open link in TOR browser - http://lockbitks2tvnmwk.onion/?8841DD9B0AC925FFB94E28A3BAD76C80
This link only works in Tor Browser!
| 3. Follow the instructions on this page
### Attention! ###
# lockbit-decryptor.top may be blocked. We recommend using a Tor browser to access the site
# Do not rename encrypted files.
# Do not try to decrypt using third party software, it may cause permanent data loss.
# Decryption of your files with the help of third parties may cause increased price(they add their fee to our).
# Tor Browser may be blocked in your country or corporate network. Use https://bridges.torproject.org or use Tor Browser over VPN.
# Tor Browser user manual https://tb-manual.torproject.org/about
URLs
http://lockbit-decryptor.top/?8841DD9B0AC925FFB94E28A3BAD76C80
http://lockbitks2tvnmwk.onion/?8841DD9B0AC925FFB94E28A3BAD76C80
Signatures
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Lockbit
Ransomware family with multiple variants released since late 2019.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 1084 bcdedit.exe 3812 bcdedit.exe -
Renames multiple (139) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 4436 wbadmin.exe -
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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation lkb99.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XO1XADpO01 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\lkb99.exe\"" lkb99.exe -
Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\F: lkb99.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 13 IoCs
pid Process 4544 lkb99.exe 4544 lkb99.exe 4544 lkb99.exe 4544 lkb99.exe 4544 lkb99.exe 4544 lkb99.exe 4544 lkb99.exe 4544 lkb99.exe 4544 lkb99.exe 4544 lkb99.exe 4544 lkb99.exe 4544 lkb99.exe 4544 lkb99.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.25\.version lkb99.exe File created C:\Program Files\Java\jdk-1.8\jre\Restore-My-Files.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\7zCon.sfx lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\fa.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\hy.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\pt-br.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\License.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\fr.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\hi.txt lkb99.exe File opened for modification C:\Program Files\Java\jdk-1.8\include\win32\bridge\AccessBridgeCallbacks.h lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\de.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\ka.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\ku-ckb.txt lkb99.exe File opened for modification C:\Program Files\EditHide.temp lkb99.exe File opened for modification C:\Program Files\Java\jdk-1.8\include\jdwpTransport.h lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\pa-in.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\va.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\vi.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\7z.sfx lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\bg.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\mng2.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\nl.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\nn.txt lkb99.exe File opened for modification C:\Program Files\Java\jdk-1.8\include\win32\jni_md.h lkb99.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.25\Microsoft.NETCore.App.deps.json lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\hr.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\kaa.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\tt.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\uk.txt lkb99.exe File opened for modification C:\Program Files\ExpandUnprotect.midi lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\el.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\ga.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\ky.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\mr.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\ta.txt lkb99.exe File created C:\Program Files\7-Zip\Lang\Restore-My-Files.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\fy.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\lv.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\et.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\hu.txt lkb99.exe File opened for modification C:\Program Files\DenyLock.au3 lkb99.exe File created C:\Program Files\dotnet\Restore-My-Files.txt lkb99.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.0\.version lkb99.exe File opened for modification C:\Program Files\Java\jdk-1.8\include\jawt.h lkb99.exe File created C:\Program Files\7-Zip\Restore-My-Files.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\is.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\nb.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\si.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\readme.txt lkb99.exe File created C:\Program Files\Java\jdk-1.8\include\win32\Restore-My-Files.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\7-zip.chm lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\ku.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\tr.txt lkb99.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.25\Microsoft.WindowsDesktop.App.deps.json lkb99.exe File created C:\Program Files\dotnet\swidtag\Restore-My-Files.txt lkb99.exe File opened for modification C:\Program Files\ApproveRegister.wmf lkb99.exe File opened for modification C:\Program Files\dotnet\swidtag\Microsoft Windows Desktop Runtime - 8.0.0 (x64).swidtag lkb99.exe File created C:\Program Files\Java\jdk-1.8\include\win32\bridge\Restore-My-Files.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\ca.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\fur.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\gu.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\mk.txt lkb99.exe File opened for modification C:\Program Files\7-Zip\Lang\pt.txt lkb99.exe File opened for modification C:\Program Files\Java\jdk-1.8\include\win32\bridge\AccessBridgeCalls.c lkb99.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
pid pid_target Process procid_target 4944 4544 WerFault.exe 84 -
Checks SCSI registry key(s) 3 TTPs 4 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\FriendlyName vds.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName vds.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_DADY&PROD_DADY_DVD-ROM\4&215468A5&0&010000 vds.exe -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1556 vssadmin.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4544 lkb99.exe 4544 lkb99.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeTakeOwnershipPrivilege 4544 lkb99.exe Token: SeDebugPrivilege 4544 lkb99.exe Token: SeBackupPrivilege 2324 vssvc.exe Token: SeRestorePrivilege 2324 vssvc.exe Token: SeAuditPrivilege 2324 vssvc.exe Token: SeIncreaseQuotaPrivilege 1580 WMIC.exe Token: SeSecurityPrivilege 1580 WMIC.exe Token: SeTakeOwnershipPrivilege 1580 WMIC.exe Token: SeLoadDriverPrivilege 1580 WMIC.exe Token: SeSystemProfilePrivilege 1580 WMIC.exe Token: SeSystemtimePrivilege 1580 WMIC.exe Token: SeProfSingleProcessPrivilege 1580 WMIC.exe Token: SeIncBasePriorityPrivilege 1580 WMIC.exe Token: SeCreatePagefilePrivilege 1580 WMIC.exe Token: SeBackupPrivilege 1580 WMIC.exe Token: SeRestorePrivilege 1580 WMIC.exe Token: SeShutdownPrivilege 1580 WMIC.exe Token: SeDebugPrivilege 1580 WMIC.exe Token: SeSystemEnvironmentPrivilege 1580 WMIC.exe Token: SeRemoteShutdownPrivilege 1580 WMIC.exe Token: SeUndockPrivilege 1580 WMIC.exe Token: SeManageVolumePrivilege 1580 WMIC.exe Token: 33 1580 WMIC.exe Token: 34 1580 WMIC.exe Token: 35 1580 WMIC.exe Token: 36 1580 WMIC.exe Token: SeIncreaseQuotaPrivilege 1580 WMIC.exe Token: SeSecurityPrivilege 1580 WMIC.exe Token: SeTakeOwnershipPrivilege 1580 WMIC.exe Token: SeLoadDriverPrivilege 1580 WMIC.exe Token: SeSystemProfilePrivilege 1580 WMIC.exe Token: SeSystemtimePrivilege 1580 WMIC.exe Token: SeProfSingleProcessPrivilege 1580 WMIC.exe Token: SeIncBasePriorityPrivilege 1580 WMIC.exe Token: SeCreatePagefilePrivilege 1580 WMIC.exe Token: SeBackupPrivilege 1580 WMIC.exe Token: SeRestorePrivilege 1580 WMIC.exe Token: SeShutdownPrivilege 1580 WMIC.exe Token: SeDebugPrivilege 1580 WMIC.exe Token: SeSystemEnvironmentPrivilege 1580 WMIC.exe Token: SeRemoteShutdownPrivilege 1580 WMIC.exe Token: SeUndockPrivilege 1580 WMIC.exe Token: SeManageVolumePrivilege 1580 WMIC.exe Token: 33 1580 WMIC.exe Token: 34 1580 WMIC.exe Token: 35 1580 WMIC.exe Token: 36 1580 WMIC.exe Token: SeBackupPrivilege 3800 wbengine.exe Token: SeRestorePrivilege 3800 wbengine.exe Token: SeSecurityPrivilege 3800 wbengine.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4544 wrote to memory of 4744 4544 lkb99.exe 99 PID 4544 wrote to memory of 4744 4544 lkb99.exe 99 PID 4744 wrote to memory of 1556 4744 cmd.exe 101 PID 4744 wrote to memory of 1556 4744 cmd.exe 101 PID 4744 wrote to memory of 1580 4744 cmd.exe 106 PID 4744 wrote to memory of 1580 4744 cmd.exe 106 PID 4744 wrote to memory of 1084 4744 cmd.exe 107 PID 4744 wrote to memory of 1084 4744 cmd.exe 107 PID 4744 wrote to memory of 3812 4744 cmd.exe 108 PID 4744 wrote to memory of 3812 4744 cmd.exe 108 PID 4744 wrote to memory of 4436 4744 cmd.exe 109 PID 4744 wrote to memory of 4436 4744 cmd.exe 109 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
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Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\lkb99.exe"C:\Users\Admin\AppData\Local\Temp\lkb99.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Enumerates connected drives
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4544 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin delete shadows /all /quiet & wmic shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet2⤵
- Suspicious use of WriteProcessMemory
PID:4744 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:1556
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete3⤵
- Suspicious use of AdjustPrivilegeToken
PID:1580
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C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures3⤵
- Modifies boot configuration data using bcdedit
PID:1084
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no3⤵
- Modifies boot configuration data using bcdedit
PID:3812
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C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet3⤵
- Deletes backup catalog
PID:4436
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4544 -s 16442⤵
- Program crash
PID:4944
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4544 -ip 45441⤵PID:4068
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2324
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3800
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:932
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:3140
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD5b77fb32e53d8ae1ceaa380be190a75da
SHA1047a7c1f3ed8f4d329097e98ef3cd6ad224cfee9
SHA256ca59087934a6eea0fcaac46a6012ab09bfde96f0acdeb19fc282df8ce4e13b97
SHA512fab0ac8dd6b23acdee3134e3c0e29c6ce0b71d7dee3423c3ad55e2b2757ba951ea28439b06639c3ea3944be66bc3d729f081229297a8e180c5905bb5a630e985