luminosity | 5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338

Analysis

max time kernel
151s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29-10-2022 13:40

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General

Target

5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe
Size

1.4MB
MD5

0f546e7eb4be1a79cd2e15f67cbe42b7
SHA1

bd706034409b6e6556920727c97e07eef28035f6
SHA256

5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338
SHA512

8f2ce5cf7285227590736e6ba2352b80c1bfcd49ba3f5c54e405c7a835c6ff5f75d2e57f4f6f31f87fb986227180d72a523aff62680815b1a2dcbb278e578f3d
SSDEEP

24576:ZRon1G/j+J1rUyv4iBImufwpH1RH17qhsaQO51HYrq/cHYIAmTXs0x/GphJq:Z8c/yHz/BfHRIUqcHBmb

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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\327462\\sysmon.exe\""	sysmon.exe

Executes dropped EXE 2 IoCs

pid	Process
5088	sysmon.exe
1504	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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\System Monitor = "\"C:\\ProgramData\\327462\\sysmon.exe\""	sysmon.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.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 4468 set thread context of 4872	4468	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe	83
PID 5088 set thread context of 1504	5088	sysmon.exe	85

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly\Desktop.ini	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe
File opened for modification	C:\Windows\assembly	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe
File created	C:\Windows\assembly\Desktop.ini	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.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
4468	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe
4468	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe
4468	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe
4468	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe
5088	sysmon.exe
5088	sysmon.exe
5088	sysmon.exe
5088	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
4872	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe
4872	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe
1504	sysmon.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4872	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4468	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe
Token: SeDebugPrivilege	5088	sysmon.exe
Token: SeDebugPrivilege	1504	sysmon.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1504	sysmon.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 4468 wrote to memory of 4872	4468	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe	83
PID 4468 wrote to memory of 4872	4468	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe	83
PID 4468 wrote to memory of 4872	4468	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe	83
PID 4468 wrote to memory of 4872	4468	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe	83
PID 4468 wrote to memory of 4872	4468	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe	83
PID 4468 wrote to memory of 4872	4468	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe	83
PID 4468 wrote to memory of 4872	4468	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe	83
PID 4468 wrote to memory of 4872	4468	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe	83
PID 4872 wrote to memory of 5088	4872	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe	84
PID 4872 wrote to memory of 5088	4872	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe	84
PID 4872 wrote to memory of 5088	4872	5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe	84
PID 5088 wrote to memory of 1504	5088	sysmon.exe	85
PID 5088 wrote to memory of 1504	5088	sysmon.exe	85
PID 5088 wrote to memory of 1504	5088	sysmon.exe	85
PID 5088 wrote to memory of 1504	5088	sysmon.exe	85
PID 5088 wrote to memory of 1504	5088	sysmon.exe	85
PID 5088 wrote to memory of 1504	5088	sysmon.exe	85
PID 5088 wrote to memory of 1504	5088	sysmon.exe	85
PID 5088 wrote to memory of 1504	5088	sysmon.exe	85
PID 1504 wrote to memory of 4872	1504	sysmon.exe	83
PID 1504 wrote to memory of 4872	1504	sysmon.exe	83
PID 1504 wrote to memory of 4872	1504	sysmon.exe	83
PID 1504 wrote to memory of 4872	1504	sysmon.exe	83
PID 1504 wrote to memory of 4872	1504	sysmon.exe	83
PID 1504 wrote to memory of 5088	1504	sysmon.exe	84
PID 1504 wrote to memory of 5088	1504	sysmon.exe	84
PID 1504 wrote to memory of 5088	1504	sysmon.exe	84
PID 1504 wrote to memory of 5088	1504	sysmon.exe	84
PID 1504 wrote to memory of 5088	1504	sysmon.exe	84

C:\Users\Admin\AppData\Local\Temp\5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe
"C:\Users\Admin\AppData\Local\Temp\5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe"
1⤵
- Drops desktop.ini file(s)
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4468
- C:\Users\Admin\AppData\Local\Temp\5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe
  C:\Users\Admin\AppData\Local\Temp\5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:4872
- - C:\ProgramData\327462\sysmon.exe
    "C:\ProgramData\327462\sysmon.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:5088
  - - C:\ProgramData\327462\sysmon.exe
      C:\ProgramData\327462\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:1504

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\327462\sysmon.exe

Filesize
1.4MB

MD5
0f546e7eb4be1a79cd2e15f67cbe42b7

SHA1
bd706034409b6e6556920727c97e07eef28035f6

SHA256
5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338

SHA512
8f2ce5cf7285227590736e6ba2352b80c1bfcd49ba3f5c54e405c7a835c6ff5f75d2e57f4f6f31f87fb986227180d72a523aff62680815b1a2dcbb278e578f3d

Download Submit
C:\ProgramData\327462\sysmon.exe

Filesize
1.4MB

MD5
0f546e7eb4be1a79cd2e15f67cbe42b7

SHA1
bd706034409b6e6556920727c97e07eef28035f6

SHA256
5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338

SHA512
8f2ce5cf7285227590736e6ba2352b80c1bfcd49ba3f5c54e405c7a835c6ff5f75d2e57f4f6f31f87fb986227180d72a523aff62680815b1a2dcbb278e578f3d

Download Submit
C:\ProgramData\327462\sysmon.exe

Filesize
1.4MB

MD5
0f546e7eb4be1a79cd2e15f67cbe42b7

SHA1
bd706034409b6e6556920727c97e07eef28035f6

SHA256
5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338

SHA512
8f2ce5cf7285227590736e6ba2352b80c1bfcd49ba3f5c54e405c7a835c6ff5f75d2e57f4f6f31f87fb986227180d72a523aff62680815b1a2dcbb278e578f3d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\5176d63c9ea432c992ba2cf7b50aa915d7c672af42bd237308654d2ce5c5a338.exe.log

Filesize
319B

MD5
da4fafeffe21b7cb3a8c170ca7911976

SHA1
50ef77e2451ab60f93f4db88325b897d215be5ad

SHA256
7341a4a13e81cbb5b7f39ec47bb45f84836b08b8d8e3ea231d2c7dad982094f7

SHA512
0bc24b69460f31a0ebc0628b99908d818ee85feb7e4b663271d9375b30cced0cd55a0bbf8edff1281a4c886ddf4476ffc989c283069cdcb1235ffcb265580fc6

Download Submit
C:\Users\Admin\AppData\Local\Temp\svhost.exe

Filesize
52KB

MD5
a64daca3cfbcd039df3ec29d3eddd001

SHA1
eee8b2573f71e8d5c3ee7e53af3e6772e090d0f3

SHA256
403752009f29381d5e4036b8be94589c89188f9ce8ef5f86959eaaada019ed36

SHA512
b6fe2d0ae3fcd4442579ecf10d498d61e0f042813c8fc4be8019da77d849cfcf0b168507139a1b5697227c272de9091788f8e03cf1ce13d5b5077568cfa6a479

Download Submit
memory/1504-145-0x0000000074E80000-0x0000000075431000-memory.dmp

Filesize
5.7MB

Download
memory/1504-154-0x0000000074E80000-0x0000000075431000-memory.dmp

Filesize
5.7MB

Download
memory/4468-144-0x0000000074E80000-0x0000000075431000-memory.dmp

Filesize
5.7MB

Download
memory/4468-132-0x0000000074E80000-0x0000000075431000-memory.dmp

Filesize
5.7MB

Download
memory/4872-147-0x0000000007360000-0x0000000007377000-memory.dmp

Filesize
92KB

Download
memory/4872-153-0x0000000074E80000-0x0000000075431000-memory.dmp

Filesize
5.7MB

Download
memory/4872-135-0x0000000074E80000-0x0000000075431000-memory.dmp

Filesize
5.7MB

Download
memory/4872-146-0x0000000007360000-0x0000000007377000-memory.dmp

Filesize
92KB

Download
memory/4872-134-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/4872-148-0x0000000007360000-0x0000000007377000-memory.dmp

Filesize
92KB

Download
memory/4872-156-0x0000000074E80000-0x0000000075431000-memory.dmp

Filesize
5.7MB

Download
memory/5088-152-0x0000000074E80000-0x0000000075431000-memory.dmp

Filesize
5.7MB

Download
memory/5088-150-0x0000000005BA0000-0x0000000005BB7000-memory.dmp

Filesize
92KB

Download
memory/5088-139-0x0000000074E80000-0x0000000075431000-memory.dmp

Filesize
5.7MB

Download
memory/5088-151-0x0000000005BA0000-0x0000000005BB7000-memory.dmp

Filesize
92KB

Download
memory/5088-149-0x0000000005BA0000-0x0000000005BB7000-memory.dmp

Filesize
92KB

Download