luminosity | ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
20-11-2022 07:30

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General

Target

ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe
Size

365KB
MD5

3c9be28e4d4613c828ce09079cedbaf0
SHA1

3f3129c7b1d2a71c878cfa3a40d41807efb15fed
SHA256

ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e
SHA512

0897f20a9cfa9c9afddc3a97220e994e263bb72891e58a91055d75f1870709d80bf4f55efd0703b32841587264b8103787ac3d8d6bd5c980e29abda444a321f7
SSDEEP

6144:WXV+JnRQtCJmM+mKwYpzyAtmLbR9JWJW+lU3hJ272Ja2P4337MqjrEVGPjk7ngIk:eAROuRvE0la2P4brEyjk7ngYsP

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\""	repair.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\\307203\\repair.exe\""	repair.exe

Executes dropped EXE 1 IoCs

pid	Process
3300	repair.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Mechanic = "\"C:\\ProgramData\\307203\\repair.exe\""	repair.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\clientsvr.exe	repair.exe
File opened for modification	C:\Windows\SysWOW64\clientsvr.exe	repair.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
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
4152	ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe
4152	ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe
3300	repair.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4152	ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3300	repair.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3300	repair.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4152 wrote to memory of 3300	4152	ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe	81
PID 4152 wrote to memory of 3300	4152	ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe	81
PID 4152 wrote to memory of 3300	4152	ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe	81
PID 3300 wrote to memory of 4152	3300	repair.exe	80
PID 3300 wrote to memory of 4152	3300	repair.exe	80
PID 3300 wrote to memory of 4152	3300	repair.exe	80
PID 3300 wrote to memory of 4152	3300	repair.exe	80
PID 3300 wrote to memory of 4152	3300	repair.exe	80

C:\Users\Admin\AppData\Local\Temp\ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe
"C:\Users\Admin\AppData\Local\Temp\ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:4152
- C:\ProgramData\307203\repair.exe
  "C:\ProgramData\307203\repair.exe"
  2⤵
  - 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:3300

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\307203\repair.exe

Filesize
365KB

MD5
3c9be28e4d4613c828ce09079cedbaf0

SHA1
3f3129c7b1d2a71c878cfa3a40d41807efb15fed

SHA256
ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e

SHA512
0897f20a9cfa9c9afddc3a97220e994e263bb72891e58a91055d75f1870709d80bf4f55efd0703b32841587264b8103787ac3d8d6bd5c980e29abda444a321f7

Download Submit
C:\ProgramData\307203\repair.exe

Filesize
365KB

MD5
3c9be28e4d4613c828ce09079cedbaf0

SHA1
3f3129c7b1d2a71c878cfa3a40d41807efb15fed

SHA256
ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e

SHA512
0897f20a9cfa9c9afddc3a97220e994e263bb72891e58a91055d75f1870709d80bf4f55efd0703b32841587264b8103787ac3d8d6bd5c980e29abda444a321f7

Download Submit
memory/3300-136-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download
memory/3300-141-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download
memory/4152-132-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download
memory/4152-137-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download
memory/4152-138-0x00000000071C0000-0x00000000071D7000-memory.dmp

Filesize
92KB

Download
memory/4152-139-0x00000000071C0000-0x00000000071D7000-memory.dmp

Filesize
92KB

Download
memory/4152-140-0x00000000071C0000-0x00000000071D7000-memory.dmp

Filesize
92KB

Download
memory/4152-142-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download