luminosity | 257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d

General

Target

257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe
Size

258KB
MD5

220e4be9f75f1a8ed6091702fc0b7fe5
SHA1

4cae4f91647f96474eecd5e186a63e5d8451a11e
SHA256

257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d
SHA512

177bb7ae8e5e61cebdac28917e19afb053b3d77c408c12fe4bb6d91ab1eeef356c495f8da100c541052459b45f4dd32f00bfbd642925b57042e3e1e99c42bd22
SSDEEP

6144:95FgsZZ+c7PQBpWHiyu8Qu+tsrnFr9Ha4S9mhJMJAPMDmp:90s2BwHifXirFJa0hEAUDy

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\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\690438\\helper.exe\""	helper.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,\"C:\\Windows\\system32\\clientsvr.exe\""	helper.exe

Executes dropped EXE 2 IoCs

pid	Process
1052	helper.exe
1400	helper.exe

Loads dropped DLL 2 IoCs

pid	Process
1216	257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe
1216	257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Computer Helper = "\"C:\\ProgramData\\690438\\helper.exe\""	helper.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\clientsvr.exe	helper.exe
File opened for modification	C:\Windows\SysWOW64\clientsvr.exe	helper.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1800 set thread context of 1216	1800	257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe	28
PID 1052 set thread context of 1400	1052	helper.exe	31

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

pid	Process
1400	helper.exe
1400	helper.exe
1400	helper.exe
1400	helper.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1216	257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1400	helper.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1400	helper.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 1216	1800	257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe	28
PID 1800 wrote to memory of 1216	1800	257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe	28
PID 1800 wrote to memory of 1216	1800	257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe	28
PID 1800 wrote to memory of 1216	1800	257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe	28
PID 1800 wrote to memory of 1216	1800	257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe	28
PID 1800 wrote to memory of 1216	1800	257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe	28
PID 1800 wrote to memory of 1216	1800	257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe	28
PID 1800 wrote to memory of 1216	1800	257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe	28
PID 1800 wrote to memory of 1216	1800	257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe	28
PID 1216 wrote to memory of 1052	1216	257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe	30
PID 1216 wrote to memory of 1052	1216	257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe	30
PID 1216 wrote to memory of 1052	1216	257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe	30
PID 1216 wrote to memory of 1052	1216	257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe	30
PID 1052 wrote to memory of 1400	1052	helper.exe	31
PID 1052 wrote to memory of 1400	1052	helper.exe	31
PID 1052 wrote to memory of 1400	1052	helper.exe	31
PID 1052 wrote to memory of 1400	1052	helper.exe	31
PID 1052 wrote to memory of 1400	1052	helper.exe	31
PID 1052 wrote to memory of 1400	1052	helper.exe	31
PID 1052 wrote to memory of 1400	1052	helper.exe	31
PID 1052 wrote to memory of 1400	1052	helper.exe	31
PID 1052 wrote to memory of 1400	1052	helper.exe	31

C:\Users\Admin\AppData\Local\Temp\257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe
"C:\Users\Admin\AppData\Local\Temp\257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Users\Admin\AppData\Local\Temp\257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe
  "C:\Users\Admin\AppData\Local\Temp\257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:1216
- - C:\ProgramData\690438\helper.exe
    "C:\ProgramData\690438\helper.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1052
  - - C:\ProgramData\690438\helper.exe
      "C:\ProgramData\690438\helper.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
      PID:1400

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\690438\helper.exe

Filesize
258KB

MD5
220e4be9f75f1a8ed6091702fc0b7fe5

SHA1
4cae4f91647f96474eecd5e186a63e5d8451a11e

SHA256
257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d

SHA512
177bb7ae8e5e61cebdac28917e19afb053b3d77c408c12fe4bb6d91ab1eeef356c495f8da100c541052459b45f4dd32f00bfbd642925b57042e3e1e99c42bd22

Download Submit
C:\ProgramData\690438\helper.exe

Filesize
258KB

MD5
220e4be9f75f1a8ed6091702fc0b7fe5

SHA1
4cae4f91647f96474eecd5e186a63e5d8451a11e

SHA256
257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d

SHA512
177bb7ae8e5e61cebdac28917e19afb053b3d77c408c12fe4bb6d91ab1eeef356c495f8da100c541052459b45f4dd32f00bfbd642925b57042e3e1e99c42bd22

Download Submit
C:\ProgramData\690438\helper.exe

Filesize
258KB

MD5
220e4be9f75f1a8ed6091702fc0b7fe5

SHA1
4cae4f91647f96474eecd5e186a63e5d8451a11e

SHA256
257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d

SHA512
177bb7ae8e5e61cebdac28917e19afb053b3d77c408c12fe4bb6d91ab1eeef356c495f8da100c541052459b45f4dd32f00bfbd642925b57042e3e1e99c42bd22

Download Submit
\ProgramData\690438\helper.exe

Filesize
258KB

MD5
220e4be9f75f1a8ed6091702fc0b7fe5

SHA1
4cae4f91647f96474eecd5e186a63e5d8451a11e

SHA256
257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d

SHA512
177bb7ae8e5e61cebdac28917e19afb053b3d77c408c12fe4bb6d91ab1eeef356c495f8da100c541052459b45f4dd32f00bfbd642925b57042e3e1e99c42bd22

Download Submit
\ProgramData\690438\helper.exe

Filesize
258KB

MD5
220e4be9f75f1a8ed6091702fc0b7fe5

SHA1
4cae4f91647f96474eecd5e186a63e5d8451a11e

SHA256
257d954b25d5d45b7ee8fd5bb47ad2e423e39f88a64da75e34e4a482a9728d1d

SHA512
177bb7ae8e5e61cebdac28917e19afb053b3d77c408c12fe4bb6d91ab1eeef356c495f8da100c541052459b45f4dd32f00bfbd642925b57042e3e1e99c42bd22

Download Submit
memory/1052-92-0x0000000074190000-0x000000007473B000-memory.dmp

Filesize
5.7MB

Download
memory/1052-79-0x0000000074190000-0x000000007473B000-memory.dmp

Filesize
5.7MB

Download
memory/1216-57-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/1216-56-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/1216-72-0x0000000074190000-0x000000007473B000-memory.dmp

Filesize
5.7MB

Download
memory/1216-63-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/1216-68-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/1216-59-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/1216-70-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/1216-100-0x0000000074190000-0x000000007473B000-memory.dmp

Filesize
5.7MB

Download
memory/1216-98-0x0000000074190000-0x000000007473B000-memory.dmp

Filesize
5.7MB

Download
memory/1400-97-0x0000000074190000-0x000000007473B000-memory.dmp

Filesize
5.7MB

Download
memory/1400-99-0x0000000074190000-0x000000007473B000-memory.dmp

Filesize
5.7MB

Download
memory/1800-54-0x0000000075241000-0x0000000075243000-memory.dmp

Filesize
8KB

Download
memory/1800-55-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download
memory/1800-67-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads