34ae59b7acc09c2e82625640cae82c5158b649db1418ddbaa24138b51f1722c5

Analysis

max time kernel
106s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
25/03/2025, 13:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

LockBit-Black-Builder-main/LockBit3Builder/Build/LB3_ReflectiveDll_DllMain.dll
Size

107KB
MD5

660679f8d44100cd240add9862598d66
SHA1

afca2fd0af09265e099e8cf5b898ea45f01f288a
SHA256

6667b29705a3c882d536589dc9d7193725ecdbc42c8bb0cc60f3c9d6d0240275
SHA512

d347ed75a08678af1eb449230f437d6f0fb3da6f98a6f7d36eaf73c7cd1399ec9712b940b370a92fa9b8d6a2ece5c607e86ecbfa12cc6cda3df85d66475091dd
SSDEEP

3072:n9bfmBYtGb2kZlBmLmmnFPNeSDkDqS4AJ:n9ptGakZlsLXFISDzAJ

Score

7^/10

defense_evasion discovery

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\Control Panel\International\Geo\Nation	6A04.tmp

Deletes itself 1 IoCs

pid	Process
2832	6A04.tmp

Executes dropped EXE 1 IoCs

pid	Process
2832	6A04.tmp

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Suspicious use of NtSetInformationThreadHideFromDebugger 8 IoCs

pid	Process
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
2832	6A04.tmp

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6A04.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.HHuYRxB06\ = "HHuYRxB06"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\HHuYRxB06\DefaultIcon	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\HHuYRxB06	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\HHuYRxB06\DefaultIcon\ = "C:\\ProgramData\\HHuYRxB06.ico"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.HHuYRxB06	rundll32.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe
1872	rundll32.exe

Suspicious behavior: RenamesItself 26 IoCs

pid	Process
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp
2832	6A04.tmp

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeAssignPrimaryTokenPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeDebugPrivilege	1872	rundll32.exe
Token: 36	1872	rundll32.exe
Token: SeImpersonatePrivilege	1872	rundll32.exe
Token: SeIncBasePriorityPrivilege	1872	rundll32.exe
Token: SeIncreaseQuotaPrivilege	1872	rundll32.exe
Token: 33	1872	rundll32.exe
Token: SeManageVolumePrivilege	1872	rundll32.exe
Token: SeProfSingleProcessPrivilege	1872	rundll32.exe
Token: SeRestorePrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeSystemProfilePrivilege	1872	rundll32.exe
Token: SeTakeOwnershipPrivilege	1872	rundll32.exe
Token: SeShutdownPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeDebugPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeBackupPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe
Token: SeSecurityPrivilege	1872	rundll32.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3232 wrote to memory of 1872	3232	rundll32.exe	86
PID 3232 wrote to memory of 1872	3232	rundll32.exe	86
PID 3232 wrote to memory of 1872	3232	rundll32.exe	86
PID 1872 wrote to memory of 2832	1872	rundll32.exe	89
PID 1872 wrote to memory of 2832	1872	rundll32.exe	89
PID 1872 wrote to memory of 2832	1872	rundll32.exe	89
PID 1872 wrote to memory of 2832	1872	rundll32.exe	89
PID 2832 wrote to memory of 4532	2832	6A04.tmp	91
PID 2832 wrote to memory of 4532	2832	6A04.tmp	91
PID 2832 wrote to memory of 4532	2832	6A04.tmp	91

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\LockBit-Black-Builder-main\LockBit3Builder\Build\LB3_ReflectiveDll_DllMain.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3232
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\LockBit-Black-Builder-main\LockBit3Builder\Build\LB3_ReflectiveDll_DllMain.dll,#1
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1872
- - C:\ProgramData\6A04.tmp
    "C:\ProgramData\6A04.tmp"
    3⤵
    - Checks computer location settings
    - Deletes itself
    - Executes dropped EXE
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: RenamesItself
    - Suspicious use of WriteProcessMemory
    PID:2832
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\6A04.tmp >> NUL
      4⤵
      System Location Discovery: System Language Discovery
      PID:4532

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\6A04.tmp

Filesize
14KB

MD5
294e9f64cb1642dd89229fff0592856b

SHA1
97b148c27f3da29ba7b18d6aee8a0db9102f47c9

SHA256
917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

SHA512
b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

Download Submit
C:\Users\Admin\AppData\Local\Temp\LockBit-Black-Builder-main\LockBit3Builder\Build\DDDDDDDDDDDDDDDDDDDDDDDDDDDDD

Filesize
107KB

MD5
2a25db52060fedecd16a9f60a06c826b

SHA1
a6d2eb2fa682cf70e76d76754c3eb9b553270c41

SHA256
a5aa75d6d4ec057b580ba1b9a8fdbb46fa44a9de5f677c520b796cf062f09611

SHA512
669532ac000400709a6aafe4ed5484e70cd138b02498530b3431dedc97551d5e5ffba13bc55dfc6fff8cf61a1f63a0790b7750ae4b7a22cad0ebda1b7c3133a5

Download Submit
memory/1872-2-0x0000000000CC0000-0x0000000000CD0000-memory.dmp

Filesize
64KB

Download
memory/1872-1-0x0000000000CC0000-0x0000000000CD0000-memory.dmp

Filesize
64KB

Download
memory/1872-0-0x0000000000CC0000-0x0000000000CD0000-memory.dmp

Filesize
64KB

Download
memory/1872-4-0x0000000002A80000-0x0000000002A90000-memory.dmp

Filesize
64KB

Download
memory/2832-14-0x000000007FDC0000-0x000000007FDC1000-memory.dmp

Filesize
4KB

Download
memory/2832-13-0x000000007FE20000-0x000000007FE21000-memory.dmp

Filesize
4KB

Download
memory/2832-12-0x00000000026A0000-0x00000000026B0000-memory.dmp

Filesize
64KB

Download
memory/2832-11-0x00000000026A0000-0x00000000026B0000-memory.dmp

Filesize
64KB

Download
memory/2832-10-0x000000007FE40000-0x000000007FE41000-memory.dmp

Filesize
4KB

Download
memory/2832-43-0x000000007FDE0000-0x000000007FDE1000-memory.dmp

Filesize
4KB

Download
memory/2832-44-0x000000007FE00000-0x000000007FE01000-memory.dmp

Filesize
4KB

Download