luminosity | 804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89

General

Target

804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe
Size

196KB
MD5

4e3b4a58556b73a525ac4ad4a667fc5f
SHA1

8647ce41e973ec67d068c14921d80942a55f8bb4
SHA256

804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89
SHA512

f85285858789a1e30b2afad625dfede84853c6154108b83a6a53cc7b88c5d6996ba2eb0dd38298fdd312f5ff280f3ea9aa523ba8a51ab83cff9efb8b20dcb6c7
SSDEEP

6144:1L5Bx3DhHc6peTzhKeLTHav3bjUl2yzac:1VBx3tHc6khK4EPe2yV

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

Processes:

csrd.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,\"C:\\Windows\\system32\\clientsvr.exe\""	csrd.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\106150\\csrd.exe\""	csrd.exe

Executes dropped EXE 2 IoCs

Processes:

csrd.execsrd.exe

pid process

4004 csrd.exe
856 csrd.exe

pid	process
4004	csrd.exe
856	csrd.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

Processes:

804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

csrd.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\csrdLink = "\"C:\\ProgramData\\106150\\csrd.exe\""	csrd.exe

Drops file in System32 directory 2 IoCs

Processes:

csrd.exe

description ioc process

File created C:\Windows\SysWOW64\clientsvr.exe csrd.exe
File opened for modification C:\Windows\SysWOW64\clientsvr.exe csrd.exe

description	ioc	process
File created	C:\Windows\SysWOW64\clientsvr.exe	csrd.exe
File opened for modification	C:\Windows\SysWOW64\clientsvr.exe	csrd.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.execsrd.exe

description	pid	process	target process
PID 4284 set thread context of 4244	4284	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe
PID 4004 set thread context of 856	4004	csrd.exe	csrd.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: RenamesItself 1 IoCs

Processes:

804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe

pid process

4244 804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe

pid	process
4244	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.execsrd.exe

description	pid	process
Token: SeDebugPrivilege	4284	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe
Token: SeDebugPrivilege	4004	csrd.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

csrd.exe

pid process

856 csrd.exe

pid	process
856	csrd.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.execsrd.exe

description	pid	process	target process
PID 4284 wrote to memory of 4244	4284	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe
PID 4284 wrote to memory of 4244	4284	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe
PID 4284 wrote to memory of 4244	4284	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe
PID 4284 wrote to memory of 4244	4284	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe
PID 4284 wrote to memory of 4244	4284	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe
PID 4284 wrote to memory of 4244	4284	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe
PID 4284 wrote to memory of 4244	4284	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe
PID 4284 wrote to memory of 4244	4284	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe
PID 4244 wrote to memory of 4004	4244	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe	csrd.exe
PID 4244 wrote to memory of 4004	4244	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe	csrd.exe
PID 4244 wrote to memory of 4004	4244	804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe	csrd.exe
PID 4004 wrote to memory of 856	4004	csrd.exe	csrd.exe
PID 4004 wrote to memory of 856	4004	csrd.exe	csrd.exe
PID 4004 wrote to memory of 856	4004	csrd.exe	csrd.exe
PID 4004 wrote to memory of 856	4004	csrd.exe	csrd.exe
PID 4004 wrote to memory of 856	4004	csrd.exe	csrd.exe
PID 4004 wrote to memory of 856	4004	csrd.exe	csrd.exe
PID 4004 wrote to memory of 856	4004	csrd.exe	csrd.exe
PID 4004 wrote to memory of 856	4004	csrd.exe	csrd.exe

C:\Users\Admin\AppData\Local\Temp\804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe
"C:\Users\Admin\AppData\Local\Temp\804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4284
- C:\Users\Admin\AppData\Local\Temp\804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe
  "C:\Users\Admin\AppData\Local\Temp\804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:4244
- - C:\ProgramData\106150\csrd.exe
    "C:\ProgramData\106150\csrd.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4004
  - - C:\ProgramData\106150\csrd.exe
      "C:\ProgramData\106150\csrd.exe"
      4⤵
      Modifies WinLogon for persistence
      Executes dropped EXE
      Adds Run key to start application
      Drops file in System32 directory
      Suspicious use of SetWindowsHookEx
      PID:856

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\106150\csrd.exe

Filesize
196KB

MD5
4e3b4a58556b73a525ac4ad4a667fc5f

SHA1
8647ce41e973ec67d068c14921d80942a55f8bb4

SHA256
804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89

SHA512
f85285858789a1e30b2afad625dfede84853c6154108b83a6a53cc7b88c5d6996ba2eb0dd38298fdd312f5ff280f3ea9aa523ba8a51ab83cff9efb8b20dcb6c7

Download Submit
C:\ProgramData\106150\csrd.exe

Filesize
196KB

MD5
4e3b4a58556b73a525ac4ad4a667fc5f

SHA1
8647ce41e973ec67d068c14921d80942a55f8bb4

SHA256
804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89

SHA512
f85285858789a1e30b2afad625dfede84853c6154108b83a6a53cc7b88c5d6996ba2eb0dd38298fdd312f5ff280f3ea9aa523ba8a51ab83cff9efb8b20dcb6c7

Download Submit
C:\ProgramData\106150\csrd.exe

Filesize
196KB

MD5
4e3b4a58556b73a525ac4ad4a667fc5f

SHA1
8647ce41e973ec67d068c14921d80942a55f8bb4

SHA256
804a74007782f858db9f08ec1797aa92429c1ae2f2496045854db975777ffe89

SHA512
f85285858789a1e30b2afad625dfede84853c6154108b83a6a53cc7b88c5d6996ba2eb0dd38298fdd312f5ff280f3ea9aa523ba8a51ab83cff9efb8b20dcb6c7

Download Submit
memory/856-147-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/856-146-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/856-143-0x0000000000000000-mapping.dmp

Download
memory/4004-140-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/4004-137-0x0000000000000000-mapping.dmp

Download
memory/4004-142-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/4244-141-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/4244-136-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/4244-135-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/4244-134-0x0000000000000000-mapping.dmp

Download
memory/4244-148-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/4284-132-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/4284-133-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads