luminosity | b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7d

Analysis

max time kernel
119s
max time network
116s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-01-2025 02:23

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General

Target

b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe
Size

545KB
MD5

f664d833881df94c0f9031a9f7ec4a10
SHA1

3dacab483cf100212cdfa882a3e84d473c16cc6a
SHA256

b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7d
SHA512

c65a807cda69c7f301754b815e2492f773e2f9e0101772b7983c8dd10f84ada189a8941c6bdc73f7f73f58ee8b717eb76a05e8e9b8204197fb5ff7b073f267a9
SSDEEP

12288:+nr9KNeYASGqoIB5PNaqBDnhiBnr9KNeYASGqoIB5PNaqBDnhi:ar0NVASPoWPdtAr0NVASPoWPdt

Score

10^/10

luminosity discovery 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
Luminosity family
luminosity

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

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\""	winlogon.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\714240\\winlogon.exe\""	winlogon.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe

Executes dropped EXE 2 IoCs

pid	Process
2244	winlogon.exe
2396	winlogon.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Winlogon = "\"C:\\ProgramData\\714240\\winlogon.exe\""	winlogon.exe

Drops file in System32 directory 2 IoCs

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 692 set thread context of 1736	692	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe	89
PID 2244 set thread context of 2396	2244	winlogon.exe	93

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlogon.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlogon.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
1736	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe
1736	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
692	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe
692	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2244	winlogon.exe
2244	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe
2396	winlogon.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1736	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	692	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe
Token: SeDebugPrivilege	2244	winlogon.exe
Token: SeDebugPrivilege	2396	winlogon.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2396	winlogon.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 692 wrote to memory of 1736	692	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe	89
PID 692 wrote to memory of 1736	692	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe	89
PID 692 wrote to memory of 1736	692	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe	89
PID 692 wrote to memory of 1736	692	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe	89
PID 692 wrote to memory of 1736	692	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe	89
PID 692 wrote to memory of 1736	692	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe	89
PID 692 wrote to memory of 1736	692	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe	89
PID 692 wrote to memory of 1736	692	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe	89
PID 1736 wrote to memory of 2244	1736	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe	90
PID 1736 wrote to memory of 2244	1736	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe	90
PID 1736 wrote to memory of 2244	1736	b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe	90
PID 2244 wrote to memory of 2396	2244	winlogon.exe	93
PID 2244 wrote to memory of 2396	2244	winlogon.exe	93
PID 2244 wrote to memory of 2396	2244	winlogon.exe	93
PID 2244 wrote to memory of 2396	2244	winlogon.exe	93
PID 2244 wrote to memory of 2396	2244	winlogon.exe	93
PID 2244 wrote to memory of 2396	2244	winlogon.exe	93
PID 2244 wrote to memory of 2396	2244	winlogon.exe	93
PID 2244 wrote to memory of 2396	2244	winlogon.exe	93
PID 2396 wrote to memory of 1736	2396	winlogon.exe	89
PID 2396 wrote to memory of 1736	2396	winlogon.exe	89
PID 2396 wrote to memory of 1736	2396	winlogon.exe	89
PID 2396 wrote to memory of 1736	2396	winlogon.exe	89
PID 2396 wrote to memory of 1736	2396	winlogon.exe	89
PID 2396 wrote to memory of 692	2396	winlogon.exe	81
PID 2396 wrote to memory of 692	2396	winlogon.exe	81
PID 2396 wrote to memory of 692	2396	winlogon.exe	81
PID 2396 wrote to memory of 692	2396	winlogon.exe	81
PID 2396 wrote to memory of 692	2396	winlogon.exe	81
PID 2396 wrote to memory of 2244	2396	winlogon.exe	90
PID 2396 wrote to memory of 2244	2396	winlogon.exe	90
PID 2396 wrote to memory of 2244	2396	winlogon.exe	90
PID 2396 wrote to memory of 2244	2396	winlogon.exe	90
PID 2396 wrote to memory of 2244	2396	winlogon.exe	90

C:\Users\Admin\AppData\Local\Temp\b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe
"C:\Users\Admin\AppData\Local\Temp\b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:692
- C:\Users\Admin\AppData\Local\Temp\b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe
  "C:\Users\Admin\AppData\Local\Temp\b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7dN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:1736
- - C:\ProgramData\714240\winlogon.exe
    "C:\ProgramData\714240\winlogon.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2244
  - - C:\ProgramData\714240\winlogon.exe
      "C:\ProgramData\714240\winlogon.exe"
      4⤵
      Modifies WinLogon for persistence
      Executes dropped EXE
      Adds Run key to start application
      Drops file in System32 directory
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\714240\winlogon.exe

Filesize
545KB

MD5
f664d833881df94c0f9031a9f7ec4a10

SHA1
3dacab483cf100212cdfa882a3e84d473c16cc6a

SHA256
b784eb06ba5a377af68910ca46e012ca64337c4408bb75697201a4765e0bcc7d

SHA512
c65a807cda69c7f301754b815e2492f773e2f9e0101772b7983c8dd10f84ada189a8941c6bdc73f7f73f58ee8b717eb76a05e8e9b8204197fb5ff7b073f267a9

Download Submit
memory/692-36-0x00000000052C0000-0x00000000052D7000-memory.dmp

Filesize
92KB

Download
memory/692-1-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/692-2-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/692-3-0x00000000750B2000-0x00000000750B3000-memory.dmp

Filesize
4KB

Download
memory/692-4-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/692-39-0x00000000052C0000-0x00000000052D7000-memory.dmp

Filesize
92KB

Download
memory/692-38-0x00000000052E0000-0x00000000052E1000-memory.dmp

Filesize
4KB

Download
memory/692-37-0x00000000052C0000-0x00000000052D7000-memory.dmp

Filesize
92KB

Download
memory/692-0-0x00000000750B2000-0x00000000750B3000-memory.dmp

Filesize
4KB

Download
memory/692-35-0x00000000052C0000-0x00000000052D7000-memory.dmp

Filesize
92KB

Download
memory/1736-7-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/1736-8-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/1736-22-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/1736-50-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/1736-49-0x0000000006B90000-0x0000000006BA7000-memory.dmp

Filesize
92KB

Download
memory/1736-31-0x0000000006B90000-0x0000000006BA7000-memory.dmp

Filesize
92KB

Download
memory/1736-32-0x0000000006BB0000-0x0000000006BB1000-memory.dmp

Filesize
4KB

Download
memory/1736-29-0x0000000006B90000-0x0000000006BA7000-memory.dmp

Filesize
92KB

Download
memory/1736-30-0x0000000006B90000-0x0000000006BA7000-memory.dmp

Filesize
92KB

Download
memory/1736-33-0x0000000006B90000-0x0000000006BA7000-memory.dmp

Filesize
92KB

Download
memory/1736-5-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1736-6-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/2244-19-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/2244-21-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/2244-20-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/2244-41-0x0000000005400000-0x0000000005417000-memory.dmp

Filesize
92KB

Download
memory/2244-42-0x0000000005400000-0x0000000005417000-memory.dmp

Filesize
92KB

Download
memory/2244-44-0x0000000005420000-0x0000000005421000-memory.dmp

Filesize
4KB

Download
memory/2244-43-0x0000000005400000-0x0000000005417000-memory.dmp

Filesize
92KB

Download
memory/2244-45-0x0000000005400000-0x0000000005417000-memory.dmp

Filesize
92KB

Download
memory/2244-23-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/2396-47-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download
memory/2396-26-0x00000000750B0000-0x0000000075661000-memory.dmp

Filesize
5.7MB

Download