luminosity | 655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9

Analysis

max time kernel
152s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27-11-2022 12:47

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General

Target

655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe
Size

263KB
MD5

0933760192fb29d692ef0e037229e86d
SHA1

e9a323e9fd86d090e3e942060c7d809d7f0a6eee
SHA256

655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9
SHA512

b7c733f0b5c02bfe61420dbb75a1c6cf57353b24c0853e07199cb89e3eebb1743df621779874ca6d1f00250c8a257e8b8b45bf4ee59a9bae5a8e3f7b0c4b52f0
SSDEEP

6144:Wve5lT+gycJHniGIGAigQtXopTPZTwqVOBCvDgi:W0Tu1G9BtXoBZrMBaDgi

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\""	sysmon.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\455397\\sysmon.exe\""	sysmon.exe

Executes dropped EXE 2 IoCs

pid	Process
4372	sysmon.exe
4760	sysmon.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\System Monitor = "\"C:\\ProgramData\\455397\\sysmon.exe\""	sysmon.exe

Drops file in System32 directory 2 IoCs

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 620 set thread context of 5020	620	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe	82
PID 4372 set thread context of 4760	4372	sysmon.exe	85

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
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4372	sysmon.exe
4372	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
5020	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe
5020	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
620	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe
620	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe
4760	sysmon.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
5020	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	620	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe
Token: SeDebugPrivilege	4372	sysmon.exe
Token: SeDebugPrivilege	4760	sysmon.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4760	sysmon.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 620 wrote to memory of 5020	620	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe	82
PID 620 wrote to memory of 5020	620	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe	82
PID 620 wrote to memory of 5020	620	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe	82
PID 620 wrote to memory of 5020	620	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe	82
PID 620 wrote to memory of 5020	620	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe	82
PID 620 wrote to memory of 5020	620	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe	82
PID 620 wrote to memory of 5020	620	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe	82
PID 620 wrote to memory of 5020	620	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe	82
PID 5020 wrote to memory of 4372	5020	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe	83
PID 5020 wrote to memory of 4372	5020	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe	83
PID 5020 wrote to memory of 4372	5020	655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe	83
PID 4372 wrote to memory of 4760	4372	sysmon.exe	85
PID 4372 wrote to memory of 4760	4372	sysmon.exe	85
PID 4372 wrote to memory of 4760	4372	sysmon.exe	85
PID 4372 wrote to memory of 4760	4372	sysmon.exe	85
PID 4372 wrote to memory of 4760	4372	sysmon.exe	85
PID 4372 wrote to memory of 4760	4372	sysmon.exe	85
PID 4372 wrote to memory of 4760	4372	sysmon.exe	85
PID 4372 wrote to memory of 4760	4372	sysmon.exe	85
PID 4760 wrote to memory of 4372	4760	sysmon.exe	83
PID 4760 wrote to memory of 4372	4760	sysmon.exe	83
PID 4760 wrote to memory of 4372	4760	sysmon.exe	83
PID 4760 wrote to memory of 4372	4760	sysmon.exe	83
PID 4760 wrote to memory of 4372	4760	sysmon.exe	83
PID 4760 wrote to memory of 5020	4760	sysmon.exe	82
PID 4760 wrote to memory of 5020	4760	sysmon.exe	82
PID 4760 wrote to memory of 5020	4760	sysmon.exe	82
PID 4760 wrote to memory of 5020	4760	sysmon.exe	82
PID 4760 wrote to memory of 5020	4760	sysmon.exe	82
PID 4760 wrote to memory of 620	4760	sysmon.exe	79
PID 4760 wrote to memory of 620	4760	sysmon.exe	79
PID 4760 wrote to memory of 620	4760	sysmon.exe	79
PID 4760 wrote to memory of 620	4760	sysmon.exe	79
PID 4760 wrote to memory of 620	4760	sysmon.exe	79

C:\Users\Admin\AppData\Local\Temp\655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe
"C:\Users\Admin\AppData\Local\Temp\655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:620
- C:\Users\Admin\AppData\Local\Temp\655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe
  "C:\Users\Admin\AppData\Local\Temp\655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:5020
- - C:\ProgramData\455397\sysmon.exe
    "C:\ProgramData\455397\sysmon.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4372
  - - C:\ProgramData\455397\sysmon.exe
      "C:\ProgramData\455397\sysmon.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:4760

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

Replay Monitor

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Downloads

C:\ProgramData\455397\sysmon.exe

Filesize
263KB

MD5
0933760192fb29d692ef0e037229e86d

SHA1
e9a323e9fd86d090e3e942060c7d809d7f0a6eee

SHA256
655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9

SHA512
b7c733f0b5c02bfe61420dbb75a1c6cf57353b24c0853e07199cb89e3eebb1743df621779874ca6d1f00250c8a257e8b8b45bf4ee59a9bae5a8e3f7b0c4b52f0

Download Submit
C:\ProgramData\455397\sysmon.exe

Filesize
263KB

MD5
0933760192fb29d692ef0e037229e86d

SHA1
e9a323e9fd86d090e3e942060c7d809d7f0a6eee

SHA256
655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9

SHA512
b7c733f0b5c02bfe61420dbb75a1c6cf57353b24c0853e07199cb89e3eebb1743df621779874ca6d1f00250c8a257e8b8b45bf4ee59a9bae5a8e3f7b0c4b52f0

Download Submit
C:\ProgramData\455397\sysmon.exe

Filesize
263KB

MD5
0933760192fb29d692ef0e037229e86d

SHA1
e9a323e9fd86d090e3e942060c7d809d7f0a6eee

SHA256
655c5fb5f5600963ef4d2d705b839e62be86ae03dc3e416a1feaa670b85dfaa9

SHA512
b7c733f0b5c02bfe61420dbb75a1c6cf57353b24c0853e07199cb89e3eebb1743df621779874ca6d1f00250c8a257e8b8b45bf4ee59a9bae5a8e3f7b0c4b52f0

Download Submit
memory/620-133-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/620-132-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/4372-140-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/4372-142-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/4760-154-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/4760-146-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/5020-141-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/5020-135-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/5020-149-0x0000000007400000-0x0000000007417000-memory.dmp

Filesize
92KB

Download
memory/5020-150-0x0000000007400000-0x0000000007417000-memory.dmp

Filesize
92KB

Download
memory/5020-151-0x0000000007400000-0x0000000007417000-memory.dmp

Filesize
92KB

Download
memory/5020-136-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/5020-155-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download