luminosity | b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829

General

Target

b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe
Size

365KB
MD5

51bc28907f8d8027e3121c3064ef60f6
SHA1

34eb9c2ae598062071362eb8acb06acafddb936a
SHA256

b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829
SHA512

81a68646a515d96c7c2c1bcf670c54631efbb605d867660086c096b52afa411040947b1f7712e90e93fca58491c7535a78be6c3bc3dd31ee46e551a730343d9c
SSDEEP

6144:WXV+JnRQtCJmM+mKwYpzyAtmLbR9JWJWJlU3hJ272Ja2P4337MqjrEVGPjk7ngIk:eAROuRvEPla2P4brEyjk7ngYsP

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:

LiveChat.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,\"C:\\Windows\\system32\\clientsvr.exe\""	LiveChat.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\\178832\\LiveChat.exe\""	LiveChat.exe

Executes dropped EXE 1 IoCs

Processes:

LiveChat.exe

pid process

4828 LiveChat.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

Processes:

b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

LiveChat.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Windows98 = "\"C:\\ProgramData\\178832\\LiveChat.exe\""	LiveChat.exe

Drops file in System32 directory 2 IoCs

Processes:

LiveChat.exe

description	ioc	process
File created	C:\Windows\SysWOW64\clientsvr.exe	LiveChat.exe
File opened for modification	C:\Windows\SysWOW64\clientsvr.exe	LiveChat.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 64 IoCs

Processes:

LiveChat.exeb74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe

pid	process
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4860	b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe
4860	b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe
4828	LiveChat.exe

Suspicious behavior: RenamesItself 1 IoCs

Processes:

b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe

pid process

4860 b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

LiveChat.exe

description pid process

Token: SeDebugPrivilege 4828 LiveChat.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

LiveChat.exe

pid process

4828 LiveChat.exe

pid	process
4860	b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe

description	pid	process
Token: SeDebugPrivilege	4828	LiveChat.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exeLiveChat.exe

description	pid	process	target process
PID 4860 wrote to memory of 4828	4860	b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe	LiveChat.exe
PID 4860 wrote to memory of 4828	4860	b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe	LiveChat.exe
PID 4860 wrote to memory of 4828	4860	b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe	LiveChat.exe
PID 4828 wrote to memory of 4860	4828	LiveChat.exe	b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe
PID 4828 wrote to memory of 4860	4828	LiveChat.exe	b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe
PID 4828 wrote to memory of 4860	4828	LiveChat.exe	b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe
PID 4828 wrote to memory of 4860	4828	LiveChat.exe	b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe
PID 4828 wrote to memory of 4860	4828	LiveChat.exe	b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe

C:\Users\Admin\AppData\Local\Temp\b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe
"C:\Users\Admin\AppData\Local\Temp\b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:4860
- C:\ProgramData\178832\LiveChat.exe
  "C:\ProgramData\178832\LiveChat.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
  - Suspicious use of WriteProcessMemory
  PID:4828

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\178832\LiveChat.exe

Filesize
365KB

MD5
51bc28907f8d8027e3121c3064ef60f6

SHA1
34eb9c2ae598062071362eb8acb06acafddb936a

SHA256
b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829

SHA512
81a68646a515d96c7c2c1bcf670c54631efbb605d867660086c096b52afa411040947b1f7712e90e93fca58491c7535a78be6c3bc3dd31ee46e551a730343d9c

Download Submit
C:\ProgramData\178832\LiveChat.exe

Filesize
365KB

MD5
51bc28907f8d8027e3121c3064ef60f6

SHA1
34eb9c2ae598062071362eb8acb06acafddb936a

SHA256
b74aa3ea836a85ea0e646352f2216b8a834be47b002e04ba88259219a9c13829

SHA512
81a68646a515d96c7c2c1bcf670c54631efbb605d867660086c096b52afa411040947b1f7712e90e93fca58491c7535a78be6c3bc3dd31ee46e551a730343d9c

Download Submit
memory/4828-133-0x0000000000000000-mapping.dmp

Download
memory/4828-136-0x0000000075170000-0x0000000075721000-memory.dmp

Filesize
5.7MB

Download
memory/4828-141-0x0000000075170000-0x0000000075721000-memory.dmp

Filesize
5.7MB

Download
memory/4860-132-0x0000000075170000-0x0000000075721000-memory.dmp

Filesize
5.7MB

Download
memory/4860-137-0x0000000075170000-0x0000000075721000-memory.dmp

Filesize
5.7MB

Download
memory/4860-138-0x00000000063A0000-0x00000000063B7000-memory.dmp

Filesize
92KB

Download
memory/4860-139-0x00000000063A0000-0x00000000063B7000-memory.dmp

Filesize
92KB

Download
memory/4860-140-0x00000000063A0000-0x00000000063B7000-memory.dmp

Filesize
92KB

Download
memory/4860-142-0x0000000075170000-0x0000000075721000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads