luminosity | ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e

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

Processes:

repair.exe

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-1-5-21-575491160-2295418218-1540667289-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\260198\\repair.exe\""	repair.exe

Executes dropped EXE 1 IoCs

Processes:

repair.exe

pid process

1496 repair.exe

pid	process
1496	repair.exe

Loads dropped DLL 2 IoCs

Processes:

ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe

pid	process
1684	ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe
1684	ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

repair.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-575491160-2295418218-1540667289-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Mechanic = "\"C:\\ProgramData\\260198\\repair.exe\""	repair.exe

Drops file in System32 directory 2 IoCs

Processes:

repair.exe

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 7 IoCs

Processes:

repair.exe

pid process

1496 repair.exe
1496 repair.exe
1496 repair.exe
1496 repair.exe
1496 repair.exe
1496 repair.exe
1496 repair.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe

pid process

1684 ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

repair.exe

description pid process

Token: SeDebugPrivilege 1496 repair.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

repair.exe

pid process

1496 repair.exe

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

pid	process
1496	repair.exe
1496	repair.exe
1496	repair.exe
1496	repair.exe
1496	repair.exe
1496	repair.exe
1496	repair.exe

description	pid	process
Token: SeDebugPrivilege	1496	repair.exe

pid	process
1496	repair.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe

description	pid	process	target process
PID 1684 wrote to memory of 1496	1684	ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe	repair.exe
PID 1684 wrote to memory of 1496	1684	ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe	repair.exe
PID 1684 wrote to memory of 1496	1684	ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe	repair.exe
PID 1684 wrote to memory of 1496	1684	ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe	repair.exe

C:\Users\Admin\AppData\Local\Temp\ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe
"C:\Users\Admin\AppData\Local\Temp\ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:1684
- C:\ProgramData\260198\repair.exe
  "C:\ProgramData\260198\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
  PID:1496

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\260198\repair.exe

Filesize
365KB

MD5
3c9be28e4d4613c828ce09079cedbaf0

SHA1
3f3129c7b1d2a71c878cfa3a40d41807efb15fed

SHA256
ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e

SHA512
0897f20a9cfa9c9afddc3a97220e994e263bb72891e58a91055d75f1870709d80bf4f55efd0703b32841587264b8103787ac3d8d6bd5c980e29abda444a321f7

Download Submit
C:\ProgramData\260198\repair.exe

Filesize
365KB

MD5
3c9be28e4d4613c828ce09079cedbaf0

SHA1
3f3129c7b1d2a71c878cfa3a40d41807efb15fed

SHA256
ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e

SHA512
0897f20a9cfa9c9afddc3a97220e994e263bb72891e58a91055d75f1870709d80bf4f55efd0703b32841587264b8103787ac3d8d6bd5c980e29abda444a321f7

Download Submit
\ProgramData\260198\repair.exe

Filesize
365KB

MD5
3c9be28e4d4613c828ce09079cedbaf0

SHA1
3f3129c7b1d2a71c878cfa3a40d41807efb15fed

SHA256
ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e

SHA512
0897f20a9cfa9c9afddc3a97220e994e263bb72891e58a91055d75f1870709d80bf4f55efd0703b32841587264b8103787ac3d8d6bd5c980e29abda444a321f7

Download Submit
\ProgramData\260198\repair.exe

Filesize
365KB

MD5
3c9be28e4d4613c828ce09079cedbaf0

SHA1
3f3129c7b1d2a71c878cfa3a40d41807efb15fed

SHA256
ce75c15a3459e4a32795571c89de2576f7bc3f3295f04ba2d52f8cb13404795e

SHA512
0897f20a9cfa9c9afddc3a97220e994e263bb72891e58a91055d75f1870709d80bf4f55efd0703b32841587264b8103787ac3d8d6bd5c980e29abda444a321f7

Download Submit
memory/1496-58-0x0000000000000000-mapping.dmp

Download
memory/1496-62-0x0000000074F50000-0x00000000754FB000-memory.dmp

Filesize
5.7MB

Download
memory/1496-64-0x0000000074F50000-0x00000000754FB000-memory.dmp

Filesize
5.7MB

Download
memory/1684-54-0x0000000075B11000-0x0000000075B13000-memory.dmp

Filesize
8KB

Download
memory/1684-55-0x0000000074F50000-0x00000000754FB000-memory.dmp

Filesize
5.7MB

Download
memory/1684-63-0x0000000074F50000-0x00000000754FB000-memory.dmp

Filesize
5.7MB

Download
memory/1684-65-0x0000000074F50000-0x00000000754FB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads