luminosity | 497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035

Analysis

max time kernel
190s
max time network
226s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
26-11-2022 15:21

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General

Target

497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe
Size

267KB
MD5

73189127106a82789164e3e2b83d4ce5
SHA1

221e08a774a46b84e36fa55aa0a82f10af813765
SHA256

497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035
SHA512

df9a1ca3ded719b59c5c74021635f02aeef9c0b1cb258e275f651eff63d59767ce38f3b45747767a0a1a961fac3b406d101ea4cc0e1c0d6599ce76305db94dba
SSDEEP

6144:5v+2p5fGOmQ2lBZnUnoJHwGYbf6JvMumZnRFgsWct8lXp:J+2p5pmQg5U6HCSdmZR2otk5

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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\166024\\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
4784	helper.exe
4876	helper.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Computer Helper = "\"C:\\ProgramData\\166024\\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 5060 set thread context of 3472	5060	497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe	82
PID 4784 set thread context of 4876	4784	helper.exe	84

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
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
5060	497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe
5060	497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4784	helper.exe
4784	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe
4876	helper.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3472	497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5060	497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe
Token: SeDebugPrivilege	4784	helper.exe
Token: SeDebugPrivilege	4876	helper.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4876	helper.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 5060 wrote to memory of 3472	5060	497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe	82
PID 5060 wrote to memory of 3472	5060	497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe	82
PID 5060 wrote to memory of 3472	5060	497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe	82
PID 5060 wrote to memory of 3472	5060	497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe	82
PID 5060 wrote to memory of 3472	5060	497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe	82
PID 5060 wrote to memory of 3472	5060	497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe	82
PID 5060 wrote to memory of 3472	5060	497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe	82
PID 5060 wrote to memory of 3472	5060	497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe	82
PID 3472 wrote to memory of 4784	3472	497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe	83
PID 3472 wrote to memory of 4784	3472	497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe	83
PID 3472 wrote to memory of 4784	3472	497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe	83
PID 4784 wrote to memory of 4876	4784	helper.exe	84
PID 4784 wrote to memory of 4876	4784	helper.exe	84
PID 4784 wrote to memory of 4876	4784	helper.exe	84
PID 4784 wrote to memory of 4876	4784	helper.exe	84
PID 4784 wrote to memory of 4876	4784	helper.exe	84
PID 4784 wrote to memory of 4876	4784	helper.exe	84
PID 4784 wrote to memory of 4876	4784	helper.exe	84
PID 4784 wrote to memory of 4876	4784	helper.exe	84
PID 4876 wrote to memory of 5060	4876	helper.exe	79
PID 4876 wrote to memory of 5060	4876	helper.exe	79
PID 4876 wrote to memory of 5060	4876	helper.exe	79
PID 4876 wrote to memory of 5060	4876	helper.exe	79
PID 4876 wrote to memory of 5060	4876	helper.exe	79
PID 4876 wrote to memory of 4784	4876	helper.exe	83
PID 4876 wrote to memory of 4784	4876	helper.exe	83
PID 4876 wrote to memory of 4784	4876	helper.exe	83
PID 4876 wrote to memory of 4784	4876	helper.exe	83
PID 4876 wrote to memory of 4784	4876	helper.exe	83

C:\Users\Admin\AppData\Local\Temp\497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe
"C:\Users\Admin\AppData\Local\Temp\497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5060
- C:\Users\Admin\AppData\Local\Temp\497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe
  "C:\Users\Admin\AppData\Local\Temp\497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:3472
- - C:\ProgramData\166024\helper.exe
    "C:\ProgramData\166024\helper.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4784
  - - C:\ProgramData\166024\helper.exe
      "C:\ProgramData\166024\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
      Suspicious use of WriteProcessMemory
      PID:4876

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

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Downloads

C:\ProgramData\166024\helper.exe

Filesize
267KB

MD5
73189127106a82789164e3e2b83d4ce5

SHA1
221e08a774a46b84e36fa55aa0a82f10af813765

SHA256
497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035

SHA512
df9a1ca3ded719b59c5c74021635f02aeef9c0b1cb258e275f651eff63d59767ce38f3b45747767a0a1a961fac3b406d101ea4cc0e1c0d6599ce76305db94dba

Download Submit
C:\ProgramData\166024\helper.exe

Filesize
267KB

MD5
73189127106a82789164e3e2b83d4ce5

SHA1
221e08a774a46b84e36fa55aa0a82f10af813765

SHA256
497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035

SHA512
df9a1ca3ded719b59c5c74021635f02aeef9c0b1cb258e275f651eff63d59767ce38f3b45747767a0a1a961fac3b406d101ea4cc0e1c0d6599ce76305db94dba

Download Submit
C:\ProgramData\166024\helper.exe

Filesize
267KB

MD5
73189127106a82789164e3e2b83d4ce5

SHA1
221e08a774a46b84e36fa55aa0a82f10af813765

SHA256
497d69084c82c0578576fb2d90c1cac706325f3a9da8626aebdc69b3c9340035

SHA512
df9a1ca3ded719b59c5c74021635f02aeef9c0b1cb258e275f651eff63d59767ce38f3b45747767a0a1a961fac3b406d101ea4cc0e1c0d6599ce76305db94dba

Download Submit
memory/3472-136-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/3472-135-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/3472-141-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/3472-148-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/4784-140-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/4784-142-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/4876-146-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/4876-147-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/5060-132-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/5060-133-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download