luminosity | 27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4b

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-11-2024 00:09

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General

Target

27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe
Size

1.2MB
MD5

fa6f8b21924d0288cc91e20e710608e0
SHA1

9cfc9f4e732aa278bb880cb1facb58849eb55a3e
SHA256

27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4b
SHA512

aaef1619c519f6d570184ce936aeb0b3f5a8f4333e29259619eb7976e67351bc4fd8acac2c21b2075dd27ed57bbce8ba8fe72d8e04126006d2cfe5655223f839
SSDEEP

12288:ZF8e6ej5cQObE7oyWjEZsIWO1F5s8paXERJJKCQ:oen5Omp4EZsIWO1F5s8pa0RJJKC

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\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\527644\\sysmon.exe\""	sysmon.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,\"C:\\Windows\\system32\\clientsvr.exe\""	sysmon.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe

Executes dropped EXE 2 IoCs

pid	Process
1664	sysmon.exe
1612	sysmon.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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\System Monitor = "\"C:\\ProgramData\\527644\\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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2792 set thread context of 4008	2792	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe	82
PID 1664 set thread context of 1612	1664	sysmon.exe	85

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	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sysmon.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sysmon.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
4008	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe
4008	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe
1612	sysmon.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4008	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1612	sysmon.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1612	sysmon.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2792 wrote to memory of 4008	2792	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe	82
PID 2792 wrote to memory of 4008	2792	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe	82
PID 2792 wrote to memory of 4008	2792	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe	82
PID 2792 wrote to memory of 4008	2792	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe	82
PID 2792 wrote to memory of 4008	2792	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe	82
PID 2792 wrote to memory of 4008	2792	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe	82
PID 2792 wrote to memory of 4008	2792	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe	82
PID 2792 wrote to memory of 4008	2792	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe	82
PID 4008 wrote to memory of 1664	4008	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe	84
PID 4008 wrote to memory of 1664	4008	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe	84
PID 4008 wrote to memory of 1664	4008	27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe	84
PID 1664 wrote to memory of 1612	1664	sysmon.exe	85
PID 1664 wrote to memory of 1612	1664	sysmon.exe	85
PID 1664 wrote to memory of 1612	1664	sysmon.exe	85
PID 1664 wrote to memory of 1612	1664	sysmon.exe	85
PID 1664 wrote to memory of 1612	1664	sysmon.exe	85
PID 1664 wrote to memory of 1612	1664	sysmon.exe	85
PID 1664 wrote to memory of 1612	1664	sysmon.exe	85
PID 1664 wrote to memory of 1612	1664	sysmon.exe	85
PID 1612 wrote to memory of 4008	1612	sysmon.exe	82
PID 1612 wrote to memory of 4008	1612	sysmon.exe	82
PID 1612 wrote to memory of 4008	1612	sysmon.exe	82
PID 1612 wrote to memory of 4008	1612	sysmon.exe	82
PID 1612 wrote to memory of 4008	1612	sysmon.exe	82

C:\Users\Admin\AppData\Local\Temp\27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe
"C:\Users\Admin\AppData\Local\Temp\27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2792
- C:\Users\Admin\AppData\Local\Temp\27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe
  "C:\Users\Admin\AppData\Local\Temp\27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:4008
- - C:\ProgramData\527644\sysmon.exe
    "C:\ProgramData\527644\sysmon.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1664
  - - C:\ProgramData\527644\sysmon.exe
      "C:\ProgramData\527644\sysmon.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:1612

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

Replay Monitor

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Downloads

C:\ProgramData\527644\sysmon.exe

Filesize
1.2MB

MD5
fa6f8b21924d0288cc91e20e710608e0

SHA1
9cfc9f4e732aa278bb880cb1facb58849eb55a3e

SHA256
27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4b

SHA512
aaef1619c519f6d570184ce936aeb0b3f5a8f4333e29259619eb7976e67351bc4fd8acac2c21b2075dd27ed57bbce8ba8fe72d8e04126006d2cfe5655223f839

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\27fada8a5998904fcbd5104d080b8295846ba0f1cb4c551d7b8179d30edc6b4bN.exe.log

Filesize
594B

MD5
fdb26b3b547022b45cfaeee57eafd566

SHA1
11c6798b8a59233f404014c5e79b3363cd564b37

SHA256
2707fc7f074413881b7bafca05079327b188db6005709951e7f69d39a2af97c0

SHA512
44d9bb8c0f0b341690d00eda86e15a50f7f29ce9595925c1a2a7e19ad26202d10049a7a97bea278ecb7d429ad555de8edceeffff664d4b06309a9410a09bb700

Download Submit
memory/1664-28-0x0000000075330000-0x00000000758E1000-memory.dmp

Filesize
5.7MB

Download
memory/1664-35-0x0000000075330000-0x00000000758E1000-memory.dmp

Filesize
5.7MB

Download
memory/1664-27-0x0000000075330000-0x00000000758E1000-memory.dmp

Filesize
5.7MB

Download
memory/1664-26-0x0000000075330000-0x00000000758E1000-memory.dmp

Filesize
5.7MB

Download
memory/2792-1-0x0000000075330000-0x00000000758E1000-memory.dmp

Filesize
5.7MB

Download
memory/2792-2-0x0000000075330000-0x00000000758E1000-memory.dmp

Filesize
5.7MB

Download
memory/2792-3-0x0000000075330000-0x00000000758E1000-memory.dmp

Filesize
5.7MB

Download
memory/2792-45-0x0000000075330000-0x00000000758E1000-memory.dmp

Filesize
5.7MB

Download
memory/2792-0-0x0000000075332000-0x0000000075333000-memory.dmp

Filesize
4KB

Download
memory/2792-13-0x0000000075330000-0x00000000758E1000-memory.dmp

Filesize
5.7MB

Download
memory/4008-10-0x0000000075330000-0x00000000758E1000-memory.dmp

Filesize
5.7MB

Download
memory/4008-14-0x0000000075330000-0x00000000758E1000-memory.dmp

Filesize
5.7MB

Download
memory/4008-12-0x0000000075330000-0x00000000758E1000-memory.dmp

Filesize
5.7MB

Download
memory/4008-38-0x0000000075330000-0x00000000758E1000-memory.dmp

Filesize
5.7MB

Download
memory/4008-43-0x0000000007160000-0x0000000007177000-memory.dmp

Filesize
92KB

Download
memory/4008-42-0x0000000007180000-0x0000000007181000-memory.dmp

Filesize
4KB

Download
memory/4008-41-0x0000000007160000-0x0000000007177000-memory.dmp

Filesize
92KB

Download
memory/4008-40-0x0000000007160000-0x0000000007177000-memory.dmp

Filesize
92KB

Download
memory/4008-39-0x0000000007160000-0x0000000007177000-memory.dmp

Filesize
92KB

Download
memory/4008-6-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4008-4-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4008-47-0x0000000007160000-0x0000000007177000-memory.dmp

Filesize
92KB

Download
memory/4008-48-0x0000000075330000-0x00000000758E1000-memory.dmp

Filesize
5.7MB

Download