luminosity | 0f94ecc5132b9d5f61f4983a36587cb08f58bbf7f3d62b4775da1e892f961f3d

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02/01/2025, 00:36

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General

Target
malware.exe
Size 168KB
Sample250102-aycejstkc1
SHA256 8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c
MD5 aa7814ec18864f0b90a1100a624cb1fd
SHA1 81f5af5bb7b98d4f4901330aadce275cf8529453
SHA512 7e91a074fe75c9629148a77897afac05433d0e5d99d30683e0c60f58a840002b1c309c5623ab0d862f7b52bdb8be41cd2e0b3ebc14235cad2a65985214a6f288
SSDEEP 3072:bk5zdU9Qy3RDAMx4k3HeSUNz2Pbjc7bN5nzI9CUTjcqyCKGBp2gGrND0GU:w5zd8RDr6zSAqPbjMbnzpWIqvKGtg
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

luminosity discovery persistence rat

Malware Config

Signatures

Luminosity
Luminosity is a RAT family that was on sale, while claiming to be a system administration utility.
rat luminosity
Luminosity family
luminosity

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,\"C:\\Windows\\system32\\clientsvr.exe\""	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\884103\\explorer.exe\""	explorer.exe

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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	malware.exe

Executes dropped EXE 2 IoCs

pid	Process
1424	explorer.exe
4548	explorer.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\explorer = "\"C:\\ProgramData\\884103\\explorer.exe\""	explorer.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\clientsvr.exe	explorer.exe
File opened for modification	C:\Windows\SysWOW64\clientsvr.exe	explorer.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4648 set thread context of 1332	4648	malware.exe	88
PID 1424 set thread context of 4548	1424	explorer.exe	93

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 4 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	malware.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	malware.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4648	malware.exe
1424	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
1332	malware.exe
1332	malware.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe
4548	explorer.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1332	malware.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4648	malware.exe
Token: SeDebugPrivilege	1424	explorer.exe
Token: SeDebugPrivilege	4548	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4548	explorer.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4648 wrote to memory of 1332	4648	malware.exe	88
PID 4648 wrote to memory of 1332	4648	malware.exe	88
PID 4648 wrote to memory of 1332	4648	malware.exe	88
PID 4648 wrote to memory of 1332	4648	malware.exe	88
PID 4648 wrote to memory of 1332	4648	malware.exe	88
PID 4648 wrote to memory of 1332	4648	malware.exe	88
PID 4648 wrote to memory of 1332	4648	malware.exe	88
PID 4648 wrote to memory of 1332	4648	malware.exe	88
PID 1332 wrote to memory of 1424	1332	malware.exe	90
PID 1332 wrote to memory of 1424	1332	malware.exe	90
PID 1332 wrote to memory of 1424	1332	malware.exe	90
PID 1424 wrote to memory of 4548	1424	explorer.exe	93
PID 1424 wrote to memory of 4548	1424	explorer.exe	93
PID 1424 wrote to memory of 4548	1424	explorer.exe	93
PID 1424 wrote to memory of 4548	1424	explorer.exe	93
PID 1424 wrote to memory of 4548	1424	explorer.exe	93
PID 1424 wrote to memory of 4548	1424	explorer.exe	93
PID 1424 wrote to memory of 4548	1424	explorer.exe	93
PID 1424 wrote to memory of 4548	1424	explorer.exe	93
PID 4548 wrote to memory of 1332	4548	explorer.exe	88
PID 4548 wrote to memory of 1332	4548	explorer.exe	88
PID 4548 wrote to memory of 1332	4548	explorer.exe	88
PID 4548 wrote to memory of 1332	4548	explorer.exe	88
PID 4548 wrote to memory of 1332	4548	explorer.exe	88

C:\Users\Admin\AppData\Local\Temp\malware.exe
"C:\Users\Admin\AppData\Local\Temp\malware.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4648
- C:\Users\Admin\AppData\Local\Temp\malware.exe
  "C:\Users\Admin\AppData\Local\Temp\malware.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:1332
- - C:\ProgramData\884103\explorer.exe
    "C:\ProgramData\884103\explorer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1424
  - - C:\ProgramData\884103\explorer.exe
      "C:\ProgramData\884103\explorer.exe"
      4⤵
      Modifies WinLogon for persistence
      Executes dropped EXE
      Adds Run key to start application
      Drops file in System32 directory
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:4548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

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

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Downloads

explorer.exe

Path C:\ProgramData\884103\explorer.exe
Size 168KB
SHA256 8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c
MD5 aa7814ec18864f0b90a1100a624cb1fd
SHA1 81f5af5bb7b98d4f4901330aadce275cf8529453
SHA512 7e91a074fe75c9629148a77897afac05433d0e5d99d30683e0c60f58a840002b1c309c5623ab0d862f7b52bdb8be41cd2e0b3ebc14235cad2a65985214a6f288
SSDEEP 3072:bk5zdU9Qy3RDAMx4k3HeSUNz2Pbjc7bN5nzI9CUTjcqyCKGBp2gGrND0GU:w5zd8RDr6zSAqPbjMbnzpWIqvKGtg
MD5 SHA1 SHA512 SSDEEP

Submit Download

malware.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\malware.exe.log
Size 224B
SHA256 42f723d18283fda6a0904046cc29ee8d10e562d20c7615259a46ae9c0e4c9708
MD5 9c4b66f77f12558c48b620ddfb44029d
SHA1 446651db643b943ec37b9b3599655e211a4bc73e
SHA512 983aed0ec15a79b716ac6dc080146e4ed098c117c31167053fb5971649dc621d1db5292fdd76f3010f094b75d57ea0bdb35bc829c6ba37e4d276b266361dee8e
MD5 SHA1 SHA512

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memory/1332-36-0x0000000006C20000-0x0000000006C21000-memory.dmp

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memory/1332-37-0x0000000006C00000-0x0000000006C17000-memory.dmp

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memory/1332-44-0x0000000074CC0000-0x0000000075271000-memory.dmp

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memory/1332-5-0x0000000000400000-0x000000000043E000-memory.dmp

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memory/1332-6-0x0000000074CC0000-0x0000000075271000-memory.dmp

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memory/1332-7-0x0000000074CC0000-0x0000000075271000-memory.dmp

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memory/1332-43-0x0000000006C00000-0x0000000006C17000-memory.dmp

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memory/1332-35-0x0000000006C00000-0x0000000006C17000-memory.dmp

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memory/1332-34-0x0000000006C00000-0x0000000006C17000-memory.dmp

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memory/1332-24-0x0000000074CC0000-0x0000000075271000-memory.dmp

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memory/1332-33-0x0000000006C00000-0x0000000006C17000-memory.dmp

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memory/1424-40-0x0000000074CC0000-0x0000000075271000-memory.dmp

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memory/1424-25-0x0000000074CC0000-0x0000000075271000-memory.dmp

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memory/1424-21-0x0000000074CC0000-0x0000000075271000-memory.dmp

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memory/4548-29-0x0000000074CC0000-0x0000000075271000-memory.dmp

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memory/4548-30-0x0000000074CC0000-0x0000000075271000-memory.dmp

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memory/4548-41-0x0000000074CC0000-0x0000000075271000-memory.dmp

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memory/4548-28-0x0000000074CC0000-0x0000000075271000-memory.dmp

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memory/4648-0-0x0000000074CC2000-0x0000000074CC3000-memory.dmp

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memory/4648-2-0x0000000074CC0000-0x0000000075271000-memory.dmp

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memory/4648-3-0x0000000074CC2000-0x0000000074CC3000-memory.dmp

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memory/4648-23-0x0000000074CC0000-0x0000000075271000-memory.dmp

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memory/4648-1-0x0000000074CC0000-0x0000000075271000-memory.dmp

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memory/4648-4-0x0000000074CC0000-0x0000000075271000-memory.dmp

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