3968a850f5bc70d954bb5609d929f181a6f05a117fa3be4531cbd96cedfde5d6

Analysis

max time kernel
94s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-12-2024 22:25

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General

Target

LBB_ReflectiveDll_DllMain.dll
Size

113KB
MD5

ab5bdca69285d4838af12117c910bfde
SHA1

208060cf988f1702124504bae0c6a4addbeb6db3
SHA256

5594fea724aa3a124b259e81999f20affecb2238f7e517c56c450a3a311ab2bd
SHA512

33c8cb31dd142defcf52ddadaa540d86d8fdd586ad3f0f280d90c66279cf09229edde08efb9daac81383f65ba171b86344c4e5c6343b02270bfa92201e08f547
SSDEEP

3072:+/fNzovq5EKHttru48dBVFktgraAyHXU:+/Gvq5EKH6zdrFPraA

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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	7705.tmp

Deletes itself 1 IoCs

pid	Process
1168	7705.tmp

Executes dropped EXE 1 IoCs

pid	Process
1168	7705.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 3 IoCs

pid	Process
2396	rundll32.exe
2396	rundll32.exe
1168	7705.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	7705.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\kF0wnCN24	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\kF0wnCN24\DefaultIcon\ = "C:\\ProgramData\\kF0wnCN24.ico"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.kF0wnCN24	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.kF0wnCN24\ = "kF0wnCN24"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\kF0wnCN24\DefaultIcon	rundll32.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2396	rundll32.exe
2396	rundll32.exe
2396	rundll32.exe
2396	rundll32.exe
2396	rundll32.exe
2396	rundll32.exe

Suspicious behavior: RenamesItself 26 IoCs

pid	Process
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp
1168	7705.tmp

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeAssignPrimaryTokenPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeDebugPrivilege	2396	rundll32.exe
Token: 36	2396	rundll32.exe
Token: SeImpersonatePrivilege	2396	rundll32.exe
Token: SeIncBasePriorityPrivilege	2396	rundll32.exe
Token: SeIncreaseQuotaPrivilege	2396	rundll32.exe
Token: 33	2396	rundll32.exe
Token: SeManageVolumePrivilege	2396	rundll32.exe
Token: SeProfSingleProcessPrivilege	2396	rundll32.exe
Token: SeRestorePrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeSystemProfilePrivilege	2396	rundll32.exe
Token: SeTakeOwnershipPrivilege	2396	rundll32.exe
Token: SeShutdownPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeDebugPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeAssignPrimaryTokenPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeDebugPrivilege	2396	rundll32.exe
Token: 36	2396	rundll32.exe
Token: SeImpersonatePrivilege	2396	rundll32.exe
Token: SeIncBasePriorityPrivilege	2396	rundll32.exe
Token: SeIncreaseQuotaPrivilege	2396	rundll32.exe
Token: 33	2396	rundll32.exe
Token: SeManageVolumePrivilege	2396	rundll32.exe
Token: SeProfSingleProcessPrivilege	2396	rundll32.exe
Token: SeRestorePrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeSystemProfilePrivilege	2396	rundll32.exe
Token: SeTakeOwnershipPrivilege	2396	rundll32.exe
Token: SeShutdownPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeSecurityPrivilege	2396	rundll32.exe
Token: SeBackupPrivilege	2396	rundll32.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 2396	2844	rundll32.exe	82
PID 2844 wrote to memory of 2396	2844	rundll32.exe	82
PID 2844 wrote to memory of 2396	2844	rundll32.exe	82
PID 2396 wrote to memory of 1168	2396	rundll32.exe	84
PID 2396 wrote to memory of 1168	2396	rundll32.exe	84
PID 2396 wrote to memory of 1168	2396	rundll32.exe	84
PID 2396 wrote to memory of 1168	2396	rundll32.exe	84
PID 1168 wrote to memory of 3980	1168	7705.tmp	85
PID 1168 wrote to memory of 3980	1168	7705.tmp	85
PID 1168 wrote to memory of 3980	1168	7705.tmp	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\LBB_ReflectiveDll_DllMain.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\LBB_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:2396
- - C:\ProgramData\7705.tmp
    "C:\ProgramData\7705.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:1168
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\7705.tmp >> NUL
      4⤵
      System Location Discovery: System Language Discovery
      PID:3980

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

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Downloads

C:\ProgramData\7705.tmp

Filesize
14KB

MD5
294e9f64cb1642dd89229fff0592856b

SHA1
97b148c27f3da29ba7b18d6aee8a0db9102f47c9

SHA256
917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

SHA512
b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

Download Submit
C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDDDDDDDDDDDDDD

Filesize
113KB

MD5
0a8112bddbd70e170070308d3fa4a059

SHA1
2dede8b58560a094a557c0c9998d3fd4cd4102f7

SHA256
624281d2f2947a8ae399e7975bf3f4201aaa0b43ed49c24a6204d09192264408

SHA512
2577923f0480cc85cd61c2e3a40e006865af2bbe8f7c84d11da252bc0572346516612c028629caae46988a47b7efdbb49fbd5fc1b8f1ad3baa1c7902b631d455

Download Submit
memory/1168-13-0x00000000026F0000-0x0000000002700000-memory.dmp

Filesize
64KB

Download
memory/1168-15-0x000000007FDC0000-0x000000007FDC1000-memory.dmp

Filesize
4KB

Download
memory/1168-14-0x000000007FE20000-0x000000007FE21000-memory.dmp

Filesize
4KB

Download
memory/1168-12-0x00000000026F0000-0x0000000002700000-memory.dmp

Filesize
64KB

Download
memory/1168-11-0x000000007FE40000-0x000000007FE41000-memory.dmp

Filesize
4KB

Download
memory/1168-45-0x000000007FE00000-0x000000007FE01000-memory.dmp

Filesize
4KB

Download
memory/1168-44-0x000000007FDE0000-0x000000007FDE1000-memory.dmp

Filesize
4KB

Download
memory/2396-4-0x00000000033B0000-0x00000000033C0000-memory.dmp

Filesize
64KB

Download
memory/2396-5-0x00000000033B0000-0x00000000033C0000-memory.dmp

Filesize
64KB

Download
memory/2396-0-0x0000000002EF0000-0x0000000002F00000-memory.dmp

Filesize
64KB

Download
memory/2396-1-0x0000000002EF0000-0x0000000002F00000-memory.dmp

Filesize
64KB

Download
memory/2396-2-0x0000000002EF0000-0x0000000002F00000-memory.dmp

Filesize
64KB

Download