luminosity | 044575c1d5d98c4d1d63c1e6d1ce0f5d1fdfc2700bc37818de25a9b9e60087c0

Analysis

max time kernel
151s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
03-10-2022 01:39

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General

Target

044575c1d5d98c4d1d63c1e6d1ce0f5d1fdfc2700bc37818de25a9b9e60087c0.exe
Size

248KB
MD5

71c4f38df1f9e5fc232a1147eec23510
SHA1

b53d664a2213ff71a5eb1f896afd03d06277c2cb
SHA256

044575c1d5d98c4d1d63c1e6d1ce0f5d1fdfc2700bc37818de25a9b9e60087c0
SHA512

aa659373944f47d46f87f7859337e49c1b853ab26c6423a63458522178faaf2c6117d2c33dc0e5e3a8d2e75f67d57ff4d211cec056c19a4b7aa463998f6c3bac
SSDEEP

3072:KU4f+fkjZt7fF0L2vMCDiu0Y8RxwLRMcR9aBeWvfxLWDw3eWJ2NJucbPvJ1nlYZC:K1i+f3uBmLbR9JWJW2JYJuEvPr

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\""	svchost.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\\791891\\svchost.exe\""	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
892	svchost.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	044575c1d5d98c4d1d63c1e6d1ce0f5d1fdfc2700bc37818de25a9b9e60087c0.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\Service Hoster = "\"C:\\ProgramData\\791891\\svchost.exe\""	svchost.exe

Drops file in System32 directory 2 IoCs

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

pid	Process
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
644	044575c1d5d98c4d1d63c1e6d1ce0f5d1fdfc2700bc37818de25a9b9e60087c0.exe
644	044575c1d5d98c4d1d63c1e6d1ce0f5d1fdfc2700bc37818de25a9b9e60087c0.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
644	044575c1d5d98c4d1d63c1e6d1ce0f5d1fdfc2700bc37818de25a9b9e60087c0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	892	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
892	svchost.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 644 wrote to memory of 892	644	044575c1d5d98c4d1d63c1e6d1ce0f5d1fdfc2700bc37818de25a9b9e60087c0.exe	90
PID 644 wrote to memory of 892	644	044575c1d5d98c4d1d63c1e6d1ce0f5d1fdfc2700bc37818de25a9b9e60087c0.exe	90
PID 644 wrote to memory of 892	644	044575c1d5d98c4d1d63c1e6d1ce0f5d1fdfc2700bc37818de25a9b9e60087c0.exe	90
PID 892 wrote to memory of 644	892	svchost.exe	83
PID 892 wrote to memory of 644	892	svchost.exe	83
PID 892 wrote to memory of 644	892	svchost.exe	83
PID 892 wrote to memory of 644	892	svchost.exe	83
PID 892 wrote to memory of 644	892	svchost.exe	83

C:\Users\Admin\AppData\Local\Temp\044575c1d5d98c4d1d63c1e6d1ce0f5d1fdfc2700bc37818de25a9b9e60087c0.exe
"C:\Users\Admin\AppData\Local\Temp\044575c1d5d98c4d1d63c1e6d1ce0f5d1fdfc2700bc37818de25a9b9e60087c0.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:644
- C:\ProgramData\791891\svchost.exe
  "C:\ProgramData\791891\svchost.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:892

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\791891\svchost.exe

Filesize
248KB

MD5
71c4f38df1f9e5fc232a1147eec23510

SHA1
b53d664a2213ff71a5eb1f896afd03d06277c2cb

SHA256
044575c1d5d98c4d1d63c1e6d1ce0f5d1fdfc2700bc37818de25a9b9e60087c0

SHA512
aa659373944f47d46f87f7859337e49c1b853ab26c6423a63458522178faaf2c6117d2c33dc0e5e3a8d2e75f67d57ff4d211cec056c19a4b7aa463998f6c3bac

Download Submit
C:\ProgramData\791891\svchost.exe

Filesize
248KB

MD5
71c4f38df1f9e5fc232a1147eec23510

SHA1
b53d664a2213ff71a5eb1f896afd03d06277c2cb

SHA256
044575c1d5d98c4d1d63c1e6d1ce0f5d1fdfc2700bc37818de25a9b9e60087c0

SHA512
aa659373944f47d46f87f7859337e49c1b853ab26c6423a63458522178faaf2c6117d2c33dc0e5e3a8d2e75f67d57ff4d211cec056c19a4b7aa463998f6c3bac

Download Submit
memory/644-132-0x0000000074E40000-0x00000000753F1000-memory.dmp

Filesize
5.7MB

Download
memory/644-137-0x0000000074E40000-0x00000000753F1000-memory.dmp

Filesize
5.7MB

Download
memory/644-138-0x0000000006600000-0x0000000006617000-memory.dmp

Filesize
92KB

Download
memory/644-139-0x0000000006600000-0x0000000006617000-memory.dmp

Filesize
92KB

Download
memory/644-140-0x0000000006600000-0x0000000006617000-memory.dmp

Filesize
92KB

Download
memory/644-142-0x0000000074E40000-0x00000000753F1000-memory.dmp

Filesize
5.7MB

Download
memory/892-136-0x0000000074E40000-0x00000000753F1000-memory.dmp

Filesize
5.7MB

Download
memory/892-141-0x0000000074E40000-0x00000000753F1000-memory.dmp

Filesize
5.7MB

Download