luminosity | 76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7

General

Target

76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7.exe
Size

248KB
MD5

79ba3a3666976d7b8c14ec98c7a2bed0
SHA1

b7607e097c70dcb5e96df839b1eeb8c3c240133f
SHA256

76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7
SHA512

e8fd1b0130d166130a4fb4ad062066784453dff17afd4da0cbd09669abd497c98816c3cecb9fd9f5729845004922fa89fb785a6244e6586d59f1fbb3199295ec
SSDEEP

3072:KU4f+fkjZt7fF0L2vMCDiu0Y8RxwLRMcR9aBeWvfxLWDwjeWJ2NJucbPvJ1nlYZC:K1i+f3uBmLbR9JWJWqJYJuEvPr

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

Processes:

sysmon.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\517743\\sysmon.exe\""	sysmon.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,\"C:\\Windows\\system32\\clientsvr.exe\""	sysmon.exe

Executes dropped EXE 1 IoCs

Processes:

sysmon.exe

pid process

2040 sysmon.exe

pid	process
2040	sysmon.exe

Loads dropped DLL 2 IoCs

Processes:

76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7.exe

pid	process
1904	76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7.exe
1904	76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

sysmon.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\System Monitor = "\"C:\\ProgramData\\517743\\sysmon.exe\""	sysmon.exe

Drops file in System32 directory 2 IoCs

Processes:

sysmon.exe

description ioc process

File created C:\Windows\SysWOW64\clientsvr.exe sysmon.exe
File opened for modification C:\Windows\SysWOW64\clientsvr.exe sysmon.exe
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 1 IoCs

Processes:

sysmon.exe

pid process

2040 sysmon.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7.exe

pid process

1904 76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

sysmon.exe

description pid process

Token: SeDebugPrivilege 2040 sysmon.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

sysmon.exe

pid process

2040 sysmon.exe

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

pid	process
2040	sysmon.exe

description	pid	process
Token: SeDebugPrivilege	2040	sysmon.exe

pid	process
2040	sysmon.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7.exe

description	pid	process	target process
PID 1904 wrote to memory of 2040	1904	76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7.exe	sysmon.exe
PID 1904 wrote to memory of 2040	1904	76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7.exe	sysmon.exe
PID 1904 wrote to memory of 2040	1904	76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7.exe	sysmon.exe
PID 1904 wrote to memory of 2040	1904	76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7.exe	sysmon.exe

C:\Users\Admin\AppData\Local\Temp\76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7.exe
"C:\Users\Admin\AppData\Local\Temp\76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:1904
- C:\ProgramData\517743\sysmon.exe
  "C:\ProgramData\517743\sysmon.exe"
  2⤵
  - 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
  PID:2040

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\517743\sysmon.exe

Filesize
248KB

MD5
79ba3a3666976d7b8c14ec98c7a2bed0

SHA1
b7607e097c70dcb5e96df839b1eeb8c3c240133f

SHA256
76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7

SHA512
e8fd1b0130d166130a4fb4ad062066784453dff17afd4da0cbd09669abd497c98816c3cecb9fd9f5729845004922fa89fb785a6244e6586d59f1fbb3199295ec

Download Submit
C:\ProgramData\517743\sysmon.exe

Filesize
248KB

MD5
79ba3a3666976d7b8c14ec98c7a2bed0

SHA1
b7607e097c70dcb5e96df839b1eeb8c3c240133f

SHA256
76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7

SHA512
e8fd1b0130d166130a4fb4ad062066784453dff17afd4da0cbd09669abd497c98816c3cecb9fd9f5729845004922fa89fb785a6244e6586d59f1fbb3199295ec

Download Submit
\ProgramData\517743\sysmon.exe

Filesize
248KB

MD5
79ba3a3666976d7b8c14ec98c7a2bed0

SHA1
b7607e097c70dcb5e96df839b1eeb8c3c240133f

SHA256
76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7

SHA512
e8fd1b0130d166130a4fb4ad062066784453dff17afd4da0cbd09669abd497c98816c3cecb9fd9f5729845004922fa89fb785a6244e6586d59f1fbb3199295ec

Download Submit
\ProgramData\517743\sysmon.exe

Filesize
248KB

MD5
79ba3a3666976d7b8c14ec98c7a2bed0

SHA1
b7607e097c70dcb5e96df839b1eeb8c3c240133f

SHA256
76197d7e8b5862d215563cded0ac38354a27306b69ffca8e451d7369abc088e7

SHA512
e8fd1b0130d166130a4fb4ad062066784453dff17afd4da0cbd09669abd497c98816c3cecb9fd9f5729845004922fa89fb785a6244e6586d59f1fbb3199295ec

Download Submit
memory/1904-54-0x0000000075501000-0x0000000075503000-memory.dmp

Filesize
8KB

Download
memory/1904-55-0x0000000074840000-0x0000000074DEB000-memory.dmp

Filesize
5.7MB

Download
memory/1904-63-0x0000000074840000-0x0000000074DEB000-memory.dmp

Filesize
5.7MB

Download
memory/1904-65-0x0000000074840000-0x0000000074DEB000-memory.dmp

Filesize
5.7MB

Download
memory/2040-58-0x0000000000000000-mapping.dmp

Download
memory/2040-62-0x0000000074840000-0x0000000074DEB000-memory.dmp

Filesize
5.7MB

Download
memory/2040-64-0x0000000074840000-0x0000000074DEB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads