luminosity | 8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
11-10-2022 19:52

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General

Target

8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe
Size

168KB
MD5

aa7814ec18864f0b90a1100a624cb1fd
SHA1

81f5af5bb7b98d4f4901330aadce275cf8529453
SHA256

8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c
SHA512

7e91a074fe75c9629148a77897afac05433d0e5d99d30683e0c60f58a840002b1c309c5623ab0d862f7b52bdb8be41cd2e0b3ebc14235cad2a65985214a6f288
SSDEEP

3072:bk5zdU9Qy3RDAMx4k3HeSUNz2Pbjc7bN5nzI9CUTjcqyCKGBp2gGrND0GU:w5zd8RDr6zSAqPbjMbnzpWIqvKGtg

Score

10^/10

luminosity 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

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\708802\\explorer.exe\""	explorer.exe

Executes dropped EXE 2 IoCs

pid	Process
2472	explorer.exe
3168	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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\explorer = "\"C:\\ProgramData\\708802\\explorer.exe\""	explorer.exe

Drops file in System32 directory 2 IoCs

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4960 set thread context of 1760	4960	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe	84
PID 2472 set thread context of 3168	2472	explorer.exe	87

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4960	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe
2472	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
1760	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe
1760	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
2472	explorer.exe
2472	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe
3168	explorer.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1760	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4960	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe
Token: SeDebugPrivilege	2472	explorer.exe
Token: SeDebugPrivilege	3168	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3168	explorer.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 4960 wrote to memory of 1760	4960	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe	84
PID 4960 wrote to memory of 1760	4960	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe	84
PID 4960 wrote to memory of 1760	4960	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe	84
PID 4960 wrote to memory of 1760	4960	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe	84
PID 4960 wrote to memory of 1760	4960	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe	84
PID 4960 wrote to memory of 1760	4960	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe	84
PID 4960 wrote to memory of 1760	4960	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe	84
PID 4960 wrote to memory of 1760	4960	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe	84
PID 1760 wrote to memory of 2472	1760	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe	85
PID 1760 wrote to memory of 2472	1760	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe	85
PID 1760 wrote to memory of 2472	1760	8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe	85
PID 2472 wrote to memory of 3168	2472	explorer.exe	87
PID 2472 wrote to memory of 3168	2472	explorer.exe	87
PID 2472 wrote to memory of 3168	2472	explorer.exe	87
PID 2472 wrote to memory of 3168	2472	explorer.exe	87
PID 2472 wrote to memory of 3168	2472	explorer.exe	87
PID 2472 wrote to memory of 3168	2472	explorer.exe	87
PID 2472 wrote to memory of 3168	2472	explorer.exe	87
PID 2472 wrote to memory of 3168	2472	explorer.exe	87
PID 3168 wrote to memory of 1760	3168	explorer.exe	84
PID 3168 wrote to memory of 1760	3168	explorer.exe	84
PID 3168 wrote to memory of 1760	3168	explorer.exe	84
PID 3168 wrote to memory of 1760	3168	explorer.exe	84
PID 3168 wrote to memory of 1760	3168	explorer.exe	84
PID 3168 wrote to memory of 2472	3168	explorer.exe	85
PID 3168 wrote to memory of 2472	3168	explorer.exe	85
PID 3168 wrote to memory of 2472	3168	explorer.exe	85
PID 3168 wrote to memory of 2472	3168	explorer.exe	85
PID 3168 wrote to memory of 2472	3168	explorer.exe	85

C:\Users\Admin\AppData\Local\Temp\8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe
"C:\Users\Admin\AppData\Local\Temp\8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4960
- C:\Users\Admin\AppData\Local\Temp\8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe
  "C:\Users\Admin\AppData\Local\Temp\8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:1760
- - C:\ProgramData\708802\explorer.exe
    "C:\ProgramData\708802\explorer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2472
  - - C:\ProgramData\708802\explorer.exe
      "C:\ProgramData\708802\explorer.exe"
      4⤵
      Modifies WinLogon for persistence
      Executes dropped EXE
      Adds Run key to start application
      Drops file in System32 directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:3168

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\708802\explorer.exe

Filesize
168KB

MD5
aa7814ec18864f0b90a1100a624cb1fd

SHA1
81f5af5bb7b98d4f4901330aadce275cf8529453

SHA256
8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c

SHA512
7e91a074fe75c9629148a77897afac05433d0e5d99d30683e0c60f58a840002b1c309c5623ab0d862f7b52bdb8be41cd2e0b3ebc14235cad2a65985214a6f288

Download Submit
C:\ProgramData\708802\explorer.exe

Filesize
168KB

MD5
aa7814ec18864f0b90a1100a624cb1fd

SHA1
81f5af5bb7b98d4f4901330aadce275cf8529453

SHA256
8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c

SHA512
7e91a074fe75c9629148a77897afac05433d0e5d99d30683e0c60f58a840002b1c309c5623ab0d862f7b52bdb8be41cd2e0b3ebc14235cad2a65985214a6f288

Download Submit
C:\ProgramData\708802\explorer.exe

Filesize
168KB

MD5
aa7814ec18864f0b90a1100a624cb1fd

SHA1
81f5af5bb7b98d4f4901330aadce275cf8529453

SHA256
8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c

SHA512
7e91a074fe75c9629148a77897afac05433d0e5d99d30683e0c60f58a840002b1c309c5623ab0d862f7b52bdb8be41cd2e0b3ebc14235cad2a65985214a6f288

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c.exe.log

Filesize
224B

MD5
9c4b66f77f12558c48b620ddfb44029d

SHA1
446651db643b943ec37b9b3599655e211a4bc73e

SHA256
42f723d18283fda6a0904046cc29ee8d10e562d20c7615259a46ae9c0e4c9708

SHA512
983aed0ec15a79b716ac6dc080146e4ed098c117c31167053fb5971649dc621d1db5292fdd76f3010f094b75d57ea0bdb35bc829c6ba37e4d276b266361dee8e

Download Submit
memory/1760-157-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download
memory/1760-135-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/1760-136-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download
memory/1760-150-0x00000000070C0000-0x00000000070D7000-memory.dmp

Filesize
92KB

Download
memory/1760-149-0x00000000070C0000-0x00000000070D7000-memory.dmp

Filesize
92KB

Download
memory/1760-142-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download
memory/1760-148-0x00000000070C0000-0x00000000070D7000-memory.dmp

Filesize
92KB

Download
memory/2472-151-0x0000000005090000-0x00000000050A7000-memory.dmp

Filesize
92KB

Download
memory/2472-143-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download
memory/2472-140-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download
memory/2472-153-0x0000000005090000-0x00000000050A7000-memory.dmp

Filesize
92KB

Download
memory/2472-152-0x0000000005090000-0x00000000050A7000-memory.dmp

Filesize
92KB

Download
memory/2472-154-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download
memory/3168-147-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download
memory/3168-155-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download
memory/4960-141-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download
memory/4960-132-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download
memory/4960-133-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download