luminosity | 3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
07-05-2024 20:21

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General

Target

3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe
Size

638KB
MD5

1fdd8e8afb5238c0e160774f8b6a8e5b
SHA1

7fa2fc7f6632b3ddadfc930959cf8e6401b7f0de
SHA256

3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d
SHA512

d48b8c2aca82ffb5b7f9e3f9cf53cf75b9c86fda6f06a46e5f1040f12f236f5adccd2076b027c914902e376f6307a948846c095c0ac048c4643f2cd661372884
SSDEEP

12288:uZWg5P5RpcVpQjn8qadSWixuGEQVhz3SlEbshkKnUTcA9OX:Lg95REpQjHak9ufQHyvUA/

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

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\""	sysmon.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\453764\\sysmon.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-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation	3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe

Executes dropped EXE 4 IoCs

pid	Process
1912	sysmon.exe
3832	sysmon.exe
4380	sysmon.exe
3676	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-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\System Monitor = "\"C:\\ProgramData\\453764\\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 4 IoCs

description	pid	Process	procid_target
PID 3432 set thread context of 1728	3432	3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe	88
PID 1912 set thread context of 3676	1912	sysmon.exe	97
PID 1912 set thread context of 4380	1912	sysmon.exe	96
PID 1912 set thread context of 3832	1912	sysmon.exe	95

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
1728	3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe
1728	3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe
3676	sysmon.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1728	3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3676	sysmon.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3676	sysmon.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3432 wrote to memory of 1728	3432	3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe	88
PID 3432 wrote to memory of 1728	3432	3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe	88
PID 3432 wrote to memory of 1728	3432	3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe	88
PID 3432 wrote to memory of 1728	3432	3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe	88
PID 3432 wrote to memory of 1728	3432	3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe	88
PID 3432 wrote to memory of 1728	3432	3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe	88
PID 3432 wrote to memory of 1728	3432	3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe	88
PID 3432 wrote to memory of 1728	3432	3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe	88
PID 1728 wrote to memory of 1912	1728	3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe	93
PID 1728 wrote to memory of 1912	1728	3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe	93
PID 1728 wrote to memory of 1912	1728	3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe	93
PID 1912 wrote to memory of 3832	1912	sysmon.exe	95
PID 1912 wrote to memory of 3832	1912	sysmon.exe	95
PID 1912 wrote to memory of 3832	1912	sysmon.exe	95
PID 1912 wrote to memory of 4380	1912	sysmon.exe	96
PID 1912 wrote to memory of 4380	1912	sysmon.exe	96
PID 1912 wrote to memory of 4380	1912	sysmon.exe	96
PID 1912 wrote to memory of 3676	1912	sysmon.exe	97
PID 1912 wrote to memory of 3676	1912	sysmon.exe	97
PID 1912 wrote to memory of 3676	1912	sysmon.exe	97
PID 1912 wrote to memory of 3676	1912	sysmon.exe	97
PID 1912 wrote to memory of 3676	1912	sysmon.exe	97
PID 1912 wrote to memory of 3676	1912	sysmon.exe	97
PID 1912 wrote to memory of 3676	1912	sysmon.exe	97
PID 1912 wrote to memory of 3676	1912	sysmon.exe	97
PID 3676 wrote to memory of 1728	3676	sysmon.exe	88
PID 3676 wrote to memory of 1728	3676	sysmon.exe	88
PID 3676 wrote to memory of 1728	3676	sysmon.exe	88
PID 3676 wrote to memory of 1728	3676	sysmon.exe	88
PID 3676 wrote to memory of 1728	3676	sysmon.exe	88

C:\Users\Admin\AppData\Local\Temp\3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe
"C:\Users\Admin\AppData\Local\Temp\3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3432
- C:\Users\Admin\AppData\Local\Temp\3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe
  "C:\Users\Admin\AppData\Local\Temp\3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:1728
- - C:\ProgramData\453764\sysmon.exe
    "C:\ProgramData\453764\sysmon.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1912
  - - C:\ProgramData\453764\sysmon.exe
      "C:\ProgramData\453764\sysmon.exe"
      4⤵
      Executes dropped EXE
      PID:3832
  - - C:\ProgramData\453764\sysmon.exe
      "C:\ProgramData\453764\sysmon.exe"
      4⤵
      Executes dropped EXE
      PID:4380
  - - C:\ProgramData\453764\sysmon.exe
      "C:\ProgramData\453764\sysmon.exe"
      4⤵
      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:3676

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\453764\sysmon.exe

Filesize
638KB

MD5
1fdd8e8afb5238c0e160774f8b6a8e5b

SHA1
7fa2fc7f6632b3ddadfc930959cf8e6401b7f0de

SHA256
3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d

SHA512
d48b8c2aca82ffb5b7f9e3f9cf53cf75b9c86fda6f06a46e5f1040f12f236f5adccd2076b027c914902e376f6307a948846c095c0ac048c4643f2cd661372884

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\3739266e1f38976ad890c6595dde6e398f7dec6fad52b9c5f77aad2853f0833d.exe.log

Filesize
594B

MD5
fdb26b3b547022b45cfaeee57eafd566

SHA1
11c6798b8a59233f404014c5e79b3363cd564b37

SHA256
2707fc7f074413881b7bafca05079327b188db6005709951e7f69d39a2af97c0

SHA512
44d9bb8c0f0b341690d00eda86e15a50f7f29ce9595925c1a2a7e19ad26202d10049a7a97bea278ecb7d429ad555de8edceeffff664d4b06309a9410a09bb700

Download Submit
memory/1728-4-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1728-43-0x00000000071B0000-0x00000000071B1000-memory.dmp

Filesize
4KB

Download
memory/1728-6-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1728-48-0x0000000074B90000-0x0000000075141000-memory.dmp

Filesize
5.7MB

Download
memory/1728-47-0x0000000007190000-0x00000000071A7000-memory.dmp

Filesize
92KB

Download
memory/1728-11-0x0000000074B90000-0x0000000075141000-memory.dmp

Filesize
5.7MB

Download
memory/1728-46-0x0000000074B90000-0x0000000075141000-memory.dmp

Filesize
5.7MB

Download
memory/1728-12-0x0000000074B90000-0x0000000075141000-memory.dmp

Filesize
5.7MB

Download
memory/1728-44-0x0000000007190000-0x00000000071A7000-memory.dmp

Filesize
92KB

Download
memory/1728-40-0x0000000007190000-0x00000000071A7000-memory.dmp

Filesize
92KB

Download
memory/1728-41-0x0000000007190000-0x00000000071A7000-memory.dmp

Filesize
92KB

Download
memory/1728-42-0x0000000007190000-0x00000000071A7000-memory.dmp

Filesize
92KB

Download
memory/1912-28-0x0000000074B90000-0x0000000075141000-memory.dmp

Filesize
5.7MB

Download
memory/1912-38-0x0000000074B90000-0x0000000075141000-memory.dmp

Filesize
5.7MB

Download
memory/1912-27-0x0000000074B90000-0x0000000075141000-memory.dmp

Filesize
5.7MB

Download
memory/1912-26-0x0000000074B90000-0x0000000075141000-memory.dmp

Filesize
5.7MB

Download
memory/3432-3-0x0000000074B90000-0x0000000075141000-memory.dmp

Filesize
5.7MB

Download
memory/3432-1-0x0000000074B90000-0x0000000075141000-memory.dmp

Filesize
5.7MB

Download
memory/3432-10-0x0000000074B90000-0x0000000075141000-memory.dmp

Filesize
5.7MB

Download
memory/3432-2-0x0000000074B90000-0x0000000075141000-memory.dmp

Filesize
5.7MB

Download
memory/3432-0-0x0000000074B92000-0x0000000074B93000-memory.dmp

Filesize
4KB

Download