f566f21f3db0c4a9f421f18e6561279b4dd4c5fd3c32456a6f2e5b927b49719d

Resubmissions

23-05-2024 09:35

240523-lkmh5scb37 10

28-04-2024 14:29

240428-rth5zahg49 10

Analysis

max time kernel
93s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 09:35

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General

Target

LockBit-Black-Builder-main/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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	5592.tmp

Deletes itself 1 IoCs

pid	Process
3992	5592.tmp

Executes dropped EXE 1 IoCs

pid	Process
3992	5592.tmp

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3992	5592.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\ = "ZImkTWSLZ"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ZImkTWSLZ\DefaultIcon	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ZImkTWSLZ	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ZImkTWSLZ\DefaultIcon\ = "C:\\ProgramData\\ZImkTWSLZ.ico"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2596	rundll32.exe
2596	rundll32.exe
2596	rundll32.exe
2596	rundll32.exe
2596	rundll32.exe
2596	rundll32.exe
2596	rundll32.exe
2596	rundll32.exe

Suspicious behavior: RenamesItself 26 IoCs

pid	Process
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp
3992	5592.tmp

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeAssignPrimaryTokenPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeDebugPrivilege	2596	rundll32.exe
Token: 36	2596	rundll32.exe
Token: SeImpersonatePrivilege	2596	rundll32.exe
Token: SeIncBasePriorityPrivilege	2596	rundll32.exe
Token: SeIncreaseQuotaPrivilege	2596	rundll32.exe
Token: 33	2596	rundll32.exe
Token: SeManageVolumePrivilege	2596	rundll32.exe
Token: SeProfSingleProcessPrivilege	2596	rundll32.exe
Token: SeRestorePrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeSystemProfilePrivilege	2596	rundll32.exe
Token: SeTakeOwnershipPrivilege	2596	rundll32.exe
Token: SeShutdownPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeDebugPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeAssignPrimaryTokenPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeDebugPrivilege	2596	rundll32.exe
Token: 36	2596	rundll32.exe
Token: SeImpersonatePrivilege	2596	rundll32.exe
Token: SeIncBasePriorityPrivilege	2596	rundll32.exe
Token: SeIncreaseQuotaPrivilege	2596	rundll32.exe
Token: 33	2596	rundll32.exe
Token: SeManageVolumePrivilege	2596	rundll32.exe
Token: SeProfSingleProcessPrivilege	2596	rundll32.exe
Token: SeRestorePrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeSystemProfilePrivilege	2596	rundll32.exe
Token: SeTakeOwnershipPrivilege	2596	rundll32.exe
Token: SeShutdownPrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeSecurityPrivilege	2596	rundll32.exe
Token: SeBackupPrivilege	2596	rundll32.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3848 wrote to memory of 2596	3848	rundll32.exe	82
PID 3848 wrote to memory of 2596	3848	rundll32.exe	82
PID 3848 wrote to memory of 2596	3848	rundll32.exe	82
PID 2596 wrote to memory of 3992	2596	rundll32.exe	84
PID 2596 wrote to memory of 3992	2596	rundll32.exe	84
PID 2596 wrote to memory of 3992	2596	rundll32.exe	84
PID 2596 wrote to memory of 3992	2596	rundll32.exe	84
PID 3992 wrote to memory of 3572	3992	5592.tmp	85
PID 3992 wrote to memory of 3572	3992	5592.tmp	85
PID 3992 wrote to memory of 3572	3992	5592.tmp	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\LockBit-Black-Builder-main\LockBit-Black-Builder-main\LockBit30\Build\LB3_ReflectiveDll_DllMain.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3848
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\LockBit-Black-Builder-main\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:2596
- - C:\ProgramData\5592.tmp
    "C:\ProgramData\5592.tmp"
    3⤵
    - Checks computer location settings
    - Deletes itself
    - Executes dropped EXE
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious behavior: RenamesItself
    - Suspicious use of WriteProcessMemory
    PID:3992
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\5592.tmp >> NUL
      4⤵
      PID:3572

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\5592.tmp

Filesize
14KB

MD5
294e9f64cb1642dd89229fff0592856b

SHA1
97b148c27f3da29ba7b18d6aee8a0db9102f47c9

SHA256
917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

SHA512
b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

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

Filesize
106KB

MD5
03bce846961d8e75813bc26a07daf2f7

SHA1
2c29df36f52445942644f28a5a68e63ce17a2e6d

SHA256
5786cdb135fb938c518a60dc099bcc4e96a56241b0a1dc0d20f7256b194ca2af

SHA512
5610684024175545a692dabd3afcf4416fcd66ff8ff950187fcb16a804aa214f2407eb4603cbcae5f19c09beca62e61d33d1f19755ade83bdf88e727ad57eba0

Download Submit
memory/2596-4-0x0000000003490000-0x00000000034A0000-memory.dmp

Filesize
64KB

Download
memory/2596-0-0x0000000002C60000-0x0000000002C70000-memory.dmp

Filesize
64KB

Download
memory/2596-5-0x0000000003490000-0x00000000034A0000-memory.dmp

Filesize
64KB

Download
memory/2596-6-0x0000000003490000-0x00000000034A0000-memory.dmp

Filesize
64KB

Download
memory/2596-2-0x0000000002C60000-0x0000000002C70000-memory.dmp

Filesize
64KB

Download
memory/2596-1-0x0000000002C60000-0x0000000002C70000-memory.dmp

Filesize
64KB

Download
memory/3992-29-0x000000007FDC0000-0x000000007FDC1000-memory.dmp

Filesize
4KB

Download
memory/3992-27-0x000000007FE20000-0x000000007FE21000-memory.dmp

Filesize
4KB

Download
memory/3992-25-0x0000000000490000-0x00000000004A0000-memory.dmp

Filesize
64KB

Download
memory/3992-20-0x0000000000490000-0x00000000004A0000-memory.dmp

Filesize
64KB

Download
memory/3992-13-0x000000007FE40000-0x000000007FE41000-memory.dmp

Filesize
4KB

Download
memory/3992-46-0x000000007FE00000-0x000000007FE01000-memory.dmp

Filesize
4KB

Download
memory/3992-45-0x000000007FDE0000-0x000000007FDE1000-memory.dmp

Filesize
4KB

Download