luminosity | b0844dbcd6eb29418e04843cc69e61f90afbcc250d60f402dcdb815392cdd71d

General

Target

b0844dbcd6eb29418e04843cc69e61f90afbcc250d60f402dcdb815392cdd71d.exe
Size

222KB
MD5

83b9b884a0228470ebc1511fe82163d0
SHA1

f05a70ac20fd3518a761663d39635ee0f5048b33
SHA256

b0844dbcd6eb29418e04843cc69e61f90afbcc250d60f402dcdb815392cdd71d
SHA512

962e7d95a8ab7b4f894abe6f5452949f52c6f0b65a0aa5487231ac1c398c6d3a0631bd7287618faa475ef0035755d2a3e76404bc722034bb0455ef62bb7ba297
SSDEEP

3072:8U4f+fkjZt7fF0L2vMCDiu0Y8RxwLRMcR9aBeWvfxLWDwieWJ2NJucbPvJ1nlYZC:81i+f3uBmLbR9JWJWPJYJuEvPr

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\""	helper.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\503884\\helper.exe\""	helper.exe

Executes dropped EXE 1 IoCs

pid	Process
852	helper.exe

Loads dropped DLL 2 IoCs

pid	Process
2004	b0844dbcd6eb29418e04843cc69e61f90afbcc250d60f402dcdb815392cdd71d.exe
2004	b0844dbcd6eb29418e04843cc69e61f90afbcc250d60f402dcdb815392cdd71d.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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Computer Helper = "\"C:\\ProgramData\\503884\\helper.exe\""	helper.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\clientsvr.exe	helper.exe
File opened for modification	C:\Windows\SysWOW64\clientsvr.exe	helper.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 2 IoCs

pid	Process
852	helper.exe
852	helper.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2004	b0844dbcd6eb29418e04843cc69e61f90afbcc250d60f402dcdb815392cdd71d.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	852	helper.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
852	helper.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2004 wrote to memory of 852	2004	b0844dbcd6eb29418e04843cc69e61f90afbcc250d60f402dcdb815392cdd71d.exe	29
PID 2004 wrote to memory of 852	2004	b0844dbcd6eb29418e04843cc69e61f90afbcc250d60f402dcdb815392cdd71d.exe	29
PID 2004 wrote to memory of 852	2004	b0844dbcd6eb29418e04843cc69e61f90afbcc250d60f402dcdb815392cdd71d.exe	29
PID 2004 wrote to memory of 852	2004	b0844dbcd6eb29418e04843cc69e61f90afbcc250d60f402dcdb815392cdd71d.exe	29

C:\Users\Admin\AppData\Local\Temp\b0844dbcd6eb29418e04843cc69e61f90afbcc250d60f402dcdb815392cdd71d.exe
"C:\Users\Admin\AppData\Local\Temp\b0844dbcd6eb29418e04843cc69e61f90afbcc250d60f402dcdb815392cdd71d.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:2004
- C:\ProgramData\503884\helper.exe
  "C:\ProgramData\503884\helper.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:852

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\503884\helper.exe

Filesize
222KB

MD5
83b9b884a0228470ebc1511fe82163d0

SHA1
f05a70ac20fd3518a761663d39635ee0f5048b33

SHA256
b0844dbcd6eb29418e04843cc69e61f90afbcc250d60f402dcdb815392cdd71d

SHA512
962e7d95a8ab7b4f894abe6f5452949f52c6f0b65a0aa5487231ac1c398c6d3a0631bd7287618faa475ef0035755d2a3e76404bc722034bb0455ef62bb7ba297

Download Submit
C:\ProgramData\503884\helper.exe

Filesize
222KB

MD5
83b9b884a0228470ebc1511fe82163d0

SHA1
f05a70ac20fd3518a761663d39635ee0f5048b33

SHA256
b0844dbcd6eb29418e04843cc69e61f90afbcc250d60f402dcdb815392cdd71d

SHA512
962e7d95a8ab7b4f894abe6f5452949f52c6f0b65a0aa5487231ac1c398c6d3a0631bd7287618faa475ef0035755d2a3e76404bc722034bb0455ef62bb7ba297

Download Submit
\ProgramData\503884\helper.exe

Filesize
222KB

MD5
83b9b884a0228470ebc1511fe82163d0

SHA1
f05a70ac20fd3518a761663d39635ee0f5048b33

SHA256
b0844dbcd6eb29418e04843cc69e61f90afbcc250d60f402dcdb815392cdd71d

SHA512
962e7d95a8ab7b4f894abe6f5452949f52c6f0b65a0aa5487231ac1c398c6d3a0631bd7287618faa475ef0035755d2a3e76404bc722034bb0455ef62bb7ba297

Download Submit
\ProgramData\503884\helper.exe

Filesize
222KB

MD5
83b9b884a0228470ebc1511fe82163d0

SHA1
f05a70ac20fd3518a761663d39635ee0f5048b33

SHA256
b0844dbcd6eb29418e04843cc69e61f90afbcc250d60f402dcdb815392cdd71d

SHA512
962e7d95a8ab7b4f894abe6f5452949f52c6f0b65a0aa5487231ac1c398c6d3a0631bd7287618faa475ef0035755d2a3e76404bc722034bb0455ef62bb7ba297

Download Submit
memory/852-62-0x0000000074110000-0x00000000746BB000-memory.dmp

Filesize
5.7MB

Download
memory/852-64-0x0000000074110000-0x00000000746BB000-memory.dmp

Filesize
5.7MB

Download
memory/2004-54-0x0000000075811000-0x0000000075813000-memory.dmp

Filesize
8KB

Download
memory/2004-55-0x0000000074110000-0x00000000746BB000-memory.dmp

Filesize
5.7MB

Download
memory/2004-63-0x0000000074110000-0x00000000746BB000-memory.dmp

Filesize
5.7MB

Download
memory/2004-65-0x0000000074110000-0x00000000746BB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads