34ae59b7acc09c2e82625640cae82c5158b649db1418ddbaa24138b51f1722c5

Analysis

max time kernel
144s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
27-01-2024 16:14

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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

Score

7^/10

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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	5A84.tmp

Deletes itself 1 IoCs

pid	Process
4396	5A84.tmp

Executes dropped EXE 1 IoCs

pid	Process
4396	5A84.tmp

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4396	5A84.tmp

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

System Information Discovery
T1082

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\DefaultIcon\ = "C:\\ProgramData\\ZImkTWSLZ.ico"	rundll32.exe
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

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2920	rundll32.exe
2920	rundll32.exe
2920	rundll32.exe
2920	rundll32.exe

Suspicious behavior: RenamesItself 26 IoCs

pid	Process
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp
4396	5A84.tmp

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeAssignPrimaryTokenPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeDebugPrivilege	2920	rundll32.exe
Token: 36	2920	rundll32.exe
Token: SeImpersonatePrivilege	2920	rundll32.exe
Token: SeIncBasePriorityPrivilege	2920	rundll32.exe
Token: SeIncreaseQuotaPrivilege	2920	rundll32.exe
Token: 33	2920	rundll32.exe
Token: SeManageVolumePrivilege	2920	rundll32.exe
Token: SeProfSingleProcessPrivilege	2920	rundll32.exe
Token: SeRestorePrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeSystemProfilePrivilege	2920	rundll32.exe
Token: SeTakeOwnershipPrivilege	2920	rundll32.exe
Token: SeShutdownPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeAssignPrimaryTokenPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeDebugPrivilege	2920	rundll32.exe
Token: 36	2920	rundll32.exe
Token: SeImpersonatePrivilege	2920	rundll32.exe
Token: SeIncBasePriorityPrivilege	2920	rundll32.exe
Token: SeIncreaseQuotaPrivilege	2920	rundll32.exe
Token: 33	2920	rundll32.exe
Token: SeManageVolumePrivilege	2920	rundll32.exe
Token: SeProfSingleProcessPrivilege	2920	rundll32.exe
Token: SeRestorePrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeSystemProfilePrivilege	2920	rundll32.exe
Token: SeTakeOwnershipPrivilege	2920	rundll32.exe
Token: SeShutdownPrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeSecurityPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe
Token: SeBackupPrivilege	2920	rundll32.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1448 wrote to memory of 2920	1448	rundll32.exe	49
PID 1448 wrote to memory of 2920	1448	rundll32.exe	49
PID 1448 wrote to memory of 2920	1448	rundll32.exe	49
PID 2920 wrote to memory of 4396	2920	rundll32.exe	90
PID 2920 wrote to memory of 4396	2920	rundll32.exe	90
PID 2920 wrote to memory of 4396	2920	rundll32.exe	90
PID 2920 wrote to memory of 4396	2920	rundll32.exe	90
PID 4396 wrote to memory of 5228	4396	5A84.tmp	91
PID 4396 wrote to memory of 5228	4396	5A84.tmp	91
PID 4396 wrote to memory of 5228	4396	5A84.tmp	91

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\LockBit-Black-Builder-main\LockBit30\Build\LB3_ReflectiveDll_DllMain.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1448
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\LockBit-Black-Builder-main\LockBit30\Build\LB3_ReflectiveDll_DllMain.dll,#1
  2⤵
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2920
- - C:\ProgramData\5A84.tmp
    "C:\ProgramData\5A84.tmp"
    3⤵
    - Checks computer location settings
    - Deletes itself
    - Executes dropped EXE
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious behavior: RenamesItself
    - Suspicious use of WriteProcessMemory
    PID:4396
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\5A84.tmp >> NUL
      4⤵
      PID:5228

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\5A84.tmp

Filesize
14KB

MD5
294e9f64cb1642dd89229fff0592856b

SHA1
97b148c27f3da29ba7b18d6aee8a0db9102f47c9

SHA256
917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

SHA512
b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

Download Submit
C:\Users\Admin\AppData\Local\Temp\LockBit-Black-Builder-main\LockBit30\Build\DDDDDDDDDDDDDDDDDDDDDDDDDDDDD

Filesize
106KB

MD5
159c889292571e8ae68e172ea79e413a

SHA1
dc9d9cb72c659de4b9be169d243d1f57c191d5cc

SHA256
5f030566383f0c869da21eb10d81238cd6f9b588e8ec50adc8e268bf5337bc0d

SHA512
960afa600db924c25d858a0ed285c5ddaf912d096ff4bb1e5cb5934e42bcc68a96b454661b49581a7b95184d8bfaf006be945280e06c6ad0c9a4886964ebe68e

Download Submit
memory/2920-2-0x00000000022D0000-0x00000000022E0000-memory.dmp

Filesize
64KB

Download
memory/2920-1-0x00000000022D0000-0x00000000022E0000-memory.dmp

Filesize
64KB

Download
memory/2920-0-0x00000000022D0000-0x00000000022E0000-memory.dmp

Filesize
64KB

Download
memory/2920-4-0x00000000028F0000-0x0000000002900000-memory.dmp

Filesize
64KB

Download
memory/4396-12-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/4396-10-0x000000007FE40000-0x000000007FE41000-memory.dmp

Filesize
4KB

Download
memory/4396-41-0x000000007FE20000-0x000000007FE21000-memory.dmp

Filesize
4KB

Download
memory/4396-34-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/4396-44-0x000000007FE00000-0x000000007FE01000-memory.dmp

Filesize
4KB

Download
memory/4396-43-0x000000007FDE0000-0x000000007FDE1000-memory.dmp

Filesize
4KB

Download
memory/4396-42-0x000000007FDC0000-0x000000007FDC1000-memory.dmp

Filesize
4KB

Download