luminosity | 66d60762a72239205e4dc4e2c3d2e662ae6462b9d675c094e5a6d771fe11a809

General

Target

66d60762a72239205e4dc4e2c3d2e662ae6462b9d675c094e5a6d771fe11a809.exe
Size

222KB
MD5

88a5eebc648221d89ee054dd1df207be
SHA1

ae66fdee2af58dca79f43e598421af3fa407bfab
SHA256

66d60762a72239205e4dc4e2c3d2e662ae6462b9d675c094e5a6d771fe11a809
SHA512

d306013c406131cdc3623322e37f0ef2f98afa023444c2d5fd30a69813524169264aa85eb8781e8fa207c3858afbd6c8093fb77385c71fe730ee6ac3d8c7dbb9
SSDEEP

3072:8U4f+fkjZt7fF0L2vMCDiu0Y8RxwLRMcR9aBeWvfxLWDwMeWJ2NJucbPvJ1nlYZC:81i+f3uBmLbR9JWJWtJYJuEvPr

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\""	defup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\527263\\defup.exe\""	defup.exe

Executes dropped EXE 1 IoCs

pid	Process
3144	defup.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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	66d60762a72239205e4dc4e2c3d2e662ae6462b9d675c094e5a6d771fe11a809.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-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Windows Defender Updater = "\"C:\\ProgramData\\527263\\defup.exe\""	defup.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\clientsvr.exe	defup.exe
File opened for modification	C:\Windows\SysWOW64\clientsvr.exe	defup.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 34 IoCs

pid	Process
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe
3144	defup.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
5000	66d60762a72239205e4dc4e2c3d2e662ae6462b9d675c094e5a6d771fe11a809.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3144	defup.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3144	defup.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5000 wrote to memory of 3144	5000	66d60762a72239205e4dc4e2c3d2e662ae6462b9d675c094e5a6d771fe11a809.exe	87
PID 5000 wrote to memory of 3144	5000	66d60762a72239205e4dc4e2c3d2e662ae6462b9d675c094e5a6d771fe11a809.exe	87
PID 5000 wrote to memory of 3144	5000	66d60762a72239205e4dc4e2c3d2e662ae6462b9d675c094e5a6d771fe11a809.exe	87

C:\Users\Admin\AppData\Local\Temp\66d60762a72239205e4dc4e2c3d2e662ae6462b9d675c094e5a6d771fe11a809.exe
"C:\Users\Admin\AppData\Local\Temp\66d60762a72239205e4dc4e2c3d2e662ae6462b9d675c094e5a6d771fe11a809.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:5000
- C:\ProgramData\527263\defup.exe
  "C:\ProgramData\527263\defup.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:3144

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

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Downloads

C:\ProgramData\527263\defup.exe

Filesize
222KB

MD5
88a5eebc648221d89ee054dd1df207be

SHA1
ae66fdee2af58dca79f43e598421af3fa407bfab

SHA256
66d60762a72239205e4dc4e2c3d2e662ae6462b9d675c094e5a6d771fe11a809

SHA512
d306013c406131cdc3623322e37f0ef2f98afa023444c2d5fd30a69813524169264aa85eb8781e8fa207c3858afbd6c8093fb77385c71fe730ee6ac3d8c7dbb9

Download Submit
C:\ProgramData\527263\defup.exe

Filesize
222KB

MD5
88a5eebc648221d89ee054dd1df207be

SHA1
ae66fdee2af58dca79f43e598421af3fa407bfab

SHA256
66d60762a72239205e4dc4e2c3d2e662ae6462b9d675c094e5a6d771fe11a809

SHA512
d306013c406131cdc3623322e37f0ef2f98afa023444c2d5fd30a69813524169264aa85eb8781e8fa207c3858afbd6c8093fb77385c71fe730ee6ac3d8c7dbb9

Download Submit
memory/3144-137-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/3144-138-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/5000-132-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/5000-133-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/5000-139-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads