luminosity | a2e5e2051fda36150b9c28d797df1ba2917c0c5f4279419efa8902890748b347

Analysis

max time kernel
150s
max time network
9s
platform
windows7_x64
resource
win7v20201028
submitted
28-02-2021 07:18

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General

Target

a2e5e2051fda36150b9c28d797df1ba2917c0c5f4279419efa8902890748b347.exe
Size

313KB
MD5

298b03aacf618a8010c3db5b420627ae
SHA1

1668cfd05ca70d5acc1174c18d673c529fce402f
SHA256

a2e5e2051fda36150b9c28d797df1ba2917c0c5f4279419efa8902890748b347
SHA512

6bde1e09d0599c4bc2e9b91880499bc00dec4fe37b32348c66973522116e664fb197c562aaa1e3becdc425a85b01128f298d92cd6f9898c8c059c6c16d13fe45

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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\848868\\sysmon.exe\""	sysmon.exe

Executes dropped EXE 2 IoCs

pid	Process
556	319030789.exe
1548	sysmon.exe

Loads dropped DLL 2 IoCs

pid	Process
556	319030789.exe
556	319030789.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce	a2e5e2051fda36150b9c28d797df1ba2917c0c5f4279419efa8902890748b347.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	a2e5e2051fda36150b9c28d797df1ba2917c0c5f4279419efa8902890748b347.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\System32 = "\"C:\\ProgramData\\848868\\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

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
1984	powershell.exe
1984	powershell.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
556	319030789.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe
1548	sysmon.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1984	powershell.exe
Token: SeDebugPrivilege	1548	sysmon.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1548	sysmon.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 1340	1932	a2e5e2051fda36150b9c28d797df1ba2917c0c5f4279419efa8902890748b347.exe	25
PID 1932 wrote to memory of 1340	1932	a2e5e2051fda36150b9c28d797df1ba2917c0c5f4279419efa8902890748b347.exe	25
PID 1932 wrote to memory of 1340	1932	a2e5e2051fda36150b9c28d797df1ba2917c0c5f4279419efa8902890748b347.exe	25
PID 1932 wrote to memory of 616	1932	a2e5e2051fda36150b9c28d797df1ba2917c0c5f4279419efa8902890748b347.exe	27
PID 1932 wrote to memory of 616	1932	a2e5e2051fda36150b9c28d797df1ba2917c0c5f4279419efa8902890748b347.exe	27
PID 1932 wrote to memory of 616	1932	a2e5e2051fda36150b9c28d797df1ba2917c0c5f4279419efa8902890748b347.exe	27
PID 616 wrote to memory of 1984	616	cmd.exe	29
PID 616 wrote to memory of 1984	616	cmd.exe	29
PID 616 wrote to memory of 1984	616	cmd.exe	29
PID 1984 wrote to memory of 556	1984	powershell.exe	34
PID 1984 wrote to memory of 556	1984	powershell.exe	34
PID 1984 wrote to memory of 556	1984	powershell.exe	34
PID 1984 wrote to memory of 556	1984	powershell.exe	34
PID 556 wrote to memory of 1548	556	319030789.exe	36
PID 556 wrote to memory of 1548	556	319030789.exe	36
PID 556 wrote to memory of 1548	556	319030789.exe	36
PID 556 wrote to memory of 1548	556	319030789.exe	36
PID 1548 wrote to memory of 556	1548	sysmon.exe	34
PID 1548 wrote to memory of 556	1548	sysmon.exe	34
PID 1548 wrote to memory of 556	1548	sysmon.exe	34
PID 1548 wrote to memory of 556	1548	sysmon.exe	34
PID 1548 wrote to memory of 556	1548	sysmon.exe	34

C:\Users\Admin\AppData\Local\Temp\a2e5e2051fda36150b9c28d797df1ba2917c0c5f4279419efa8902890748b347.exe
"C:\Users\Admin\AppData\Local\Temp\a2e5e2051fda36150b9c28d797df1ba2917c0c5f4279419efa8902890748b347.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Windows\system32\cmd.exe
  cmd.exe /c echo.
  2⤵
  PID:1340
- C:\Windows\system32\cmd.exe
  cmd.exe /c exec.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:616
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -NonInteractive -WindowStyle Hidden -ExecutionPolicy Bypass -File ".\bits.ps1"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1984
  - - C:\Users\Admin\AppData\Local\Temp\319030789\319030789.exe
      "C:\Users\Admin\AppData\Local\Temp\319030789\319030789.exe"
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:556
    - - C:\ProgramData\848868\sysmon.exe
        
        "C:\ProgramData\848868\sysmon.exe"
        5⤵
        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:1548

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/556-31-0x0000000004380000-0x0000000004381000-memory.dmp

Filesize
4KB

Download
memory/556-30-0x0000000004370000-0x0000000004371000-memory.dmp

Filesize
4KB

Download
memory/556-21-0x00000000750C1000-0x00000000750C3000-memory.dmp

Filesize
8KB

Download
memory/556-22-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download
memory/1548-29-0x0000000000780000-0x0000000000781000-memory.dmp

Filesize
4KB

Download
memory/1932-2-0x000007FEFB541000-0x000007FEFB543000-memory.dmp

Filesize
8KB

Download
memory/1984-10-0x000000001ACC0000-0x000000001ACC1000-memory.dmp

Filesize
4KB

Download
memory/1984-17-0x000000001B570000-0x000000001B571000-memory.dmp

Filesize
4KB

Download
memory/1984-16-0x000000001C380000-0x000000001C381000-memory.dmp

Filesize
4KB

Download
memory/1984-13-0x000000001AC40000-0x000000001AC42000-memory.dmp

Filesize
8KB

Download
memory/1984-14-0x000000001AC44000-0x000000001AC46000-memory.dmp

Filesize
8KB

Download
memory/1984-12-0x0000000001EA0000-0x0000000001EA1000-memory.dmp

Filesize
4KB

Download
memory/1984-11-0x00000000022A0000-0x00000000022A1000-memory.dmp

Filesize
4KB

Download
memory/1984-9-0x0000000002600000-0x0000000002601000-memory.dmp

Filesize
4KB

Download
memory/1984-8-0x000007FEF5070000-0x000007FEF5A5C000-memory.dmp

Filesize
9.9MB

Download