luminosity | 1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0

General

Target

1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0.exe
Size

365KB
MD5

d1de202b733c21c1c1a972d27dd3332d
SHA1

f694ed67d9923bfbd05d9d04b476b9f96c87b9d4
SHA256

1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0
SHA512

8fb320aa3687e2cf8fc7b60d2e42b95b64ce4e9cd2c31eda94b9c7f79df300a879df9fdbdc24ecd9b73b4312991177c3829b6b053862a76c69461d1006d3705a
SSDEEP

6144:WXV+JnRQtCJmM+mKwYpzyAtmLbR9JWJW0lU3hJ272Ja2P4337MqjrEVGPjk7ngIk:eAROuRvEala2P4brEyjk7ngYsP

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:

dllnh.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,\"C:\\Windows\\system32\\clientsvr.exe\""	dllnh.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\826028\\dllnh.exe\""	dllnh.exe

Executes dropped EXE 1 IoCs

Processes:

dllnh.exe

pid process

1448 dllnh.exe

pid	process
1448	dllnh.exe

Loads dropped DLL 2 IoCs

Processes:

1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0.exe

pid	process
2040	1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0.exe
2040	1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

dllnh.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Systnh = "\"C:\\ProgramData\\826028\\dllnh.exe\""	dllnh.exe

Drops file in System32 directory 2 IoCs

Processes:

dllnh.exe

description ioc process

File created C:\Windows\SysWOW64\clientsvr.exe dllnh.exe
File opened for modification C:\Windows\SysWOW64\clientsvr.exe dllnh.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 4 IoCs

Processes:

dllnh.exe

pid process

1448 dllnh.exe
1448 dllnh.exe
1448 dllnh.exe
1448 dllnh.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0.exe

pid process

2040 1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

dllnh.exe

description pid process

Token: SeDebugPrivilege 1448 dllnh.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

dllnh.exe

pid process

1448 dllnh.exe

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

pid	process
1448	dllnh.exe
1448	dllnh.exe
1448	dllnh.exe
1448	dllnh.exe

description	pid	process
Token: SeDebugPrivilege	1448	dllnh.exe

pid	process
1448	dllnh.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0.exe

description	pid	process	target process
PID 2040 wrote to memory of 1448	2040	1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0.exe	dllnh.exe
PID 2040 wrote to memory of 1448	2040	1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0.exe	dllnh.exe
PID 2040 wrote to memory of 1448	2040	1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0.exe	dllnh.exe
PID 2040 wrote to memory of 1448	2040	1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0.exe	dllnh.exe

C:\Users\Admin\AppData\Local\Temp\1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0.exe
"C:\Users\Admin\AppData\Local\Temp\1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:2040

C:\ProgramData\826028\dllnh.exe
"C:\ProgramData\826028\dllnh.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:1448

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\ProgramData\826028\dllnh.exe
Filesize
365KB

MD5
d1de202b733c21c1c1a972d27dd3332d

SHA1
f694ed67d9923bfbd05d9d04b476b9f96c87b9d4

SHA256
1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0

SHA512
8fb320aa3687e2cf8fc7b60d2e42b95b64ce4e9cd2c31eda94b9c7f79df300a879df9fdbdc24ecd9b73b4312991177c3829b6b053862a76c69461d1006d3705a

Download Submit
C:\ProgramData\826028\dllnh.exe
Filesize
365KB

MD5
d1de202b733c21c1c1a972d27dd3332d

SHA1
f694ed67d9923bfbd05d9d04b476b9f96c87b9d4

SHA256
1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0

SHA512
8fb320aa3687e2cf8fc7b60d2e42b95b64ce4e9cd2c31eda94b9c7f79df300a879df9fdbdc24ecd9b73b4312991177c3829b6b053862a76c69461d1006d3705a

Download Submit
\ProgramData\826028\dllnh.exe
Filesize
365KB

MD5
d1de202b733c21c1c1a972d27dd3332d

SHA1
f694ed67d9923bfbd05d9d04b476b9f96c87b9d4

SHA256
1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0

SHA512
8fb320aa3687e2cf8fc7b60d2e42b95b64ce4e9cd2c31eda94b9c7f79df300a879df9fdbdc24ecd9b73b4312991177c3829b6b053862a76c69461d1006d3705a

Download Submit
\ProgramData\826028\dllnh.exe
Filesize
365KB

MD5
d1de202b733c21c1c1a972d27dd3332d

SHA1
f694ed67d9923bfbd05d9d04b476b9f96c87b9d4

SHA256
1c1a3ff73a2792558b5828fe6b0e16dc195391b76e51ee3002b0641c4414e9c0

SHA512
8fb320aa3687e2cf8fc7b60d2e42b95b64ce4e9cd2c31eda94b9c7f79df300a879df9fdbdc24ecd9b73b4312991177c3829b6b053862a76c69461d1006d3705a

Download Submit
memory/1448-58-0x0000000000000000-mapping.dmp

Download
memory/1448-62-0x0000000074C90000-0x000000007523B000-memory.dmp

Filesize
5.7MB

Download
memory/1448-64-0x0000000074C90000-0x000000007523B000-memory.dmp

Filesize
5.7MB

Download
memory/2040-54-0x0000000075C41000-0x0000000075C43000-memory.dmp

Filesize
8KB

Download
memory/2040-55-0x0000000074C90000-0x000000007523B000-memory.dmp

Filesize
5.7MB

Download
memory/2040-63-0x0000000074C90000-0x000000007523B000-memory.dmp

Filesize
5.7MB

Download
memory/2040-65-0x0000000074C90000-0x000000007523B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads