luminosity | 141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
26-11-2022 20:09

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General

Target

141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe
Size

504KB
MD5

442e1935e53619952a33090b4ba5aacd
SHA1

f98168d3740aa39572457fdb18646167bc713030
SHA256

141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9
SHA512

674f40dc2adb1a25d498c88a809fffcbd448119140d910a15fa535b97d8847a99942598b5f4a8622e4041abb4191e71fe7fba70f1966839a114b96d9722bfe36
SSDEEP

12288:H9cXDP90RVcaVWjUhQuczopZCPgcLMGOe:HGXDP9WVHxpZggIMU

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\""	helper.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\538748\\helper.exe\""	helper.exe

Executes dropped EXE 2 IoCs

pid	Process
2100	helper.exe
3624	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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Computer Helper = "\"C:\\ProgramData\\538748\\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 644 set thread context of 4760	644	141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe	81
PID 2100 set thread context of 3624	2100	helper.exe	83

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
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
4760	141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe
4760	141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe
3624	helper.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4760	141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	644	141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe
Token: SeDebugPrivilege	2100	helper.exe
Token: SeDebugPrivilege	3624	helper.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3624	helper.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 644 wrote to memory of 4760	644	141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe	81
PID 644 wrote to memory of 4760	644	141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe	81
PID 644 wrote to memory of 4760	644	141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe	81
PID 644 wrote to memory of 4760	644	141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe	81
PID 644 wrote to memory of 4760	644	141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe	81
PID 644 wrote to memory of 4760	644	141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe	81
PID 644 wrote to memory of 4760	644	141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe	81
PID 644 wrote to memory of 4760	644	141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe	81
PID 4760 wrote to memory of 2100	4760	141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe	82
PID 4760 wrote to memory of 2100	4760	141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe	82
PID 4760 wrote to memory of 2100	4760	141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe	82
PID 2100 wrote to memory of 3624	2100	helper.exe	83
PID 2100 wrote to memory of 3624	2100	helper.exe	83
PID 2100 wrote to memory of 3624	2100	helper.exe	83
PID 2100 wrote to memory of 3624	2100	helper.exe	83
PID 2100 wrote to memory of 3624	2100	helper.exe	83
PID 2100 wrote to memory of 3624	2100	helper.exe	83
PID 2100 wrote to memory of 3624	2100	helper.exe	83
PID 2100 wrote to memory of 3624	2100	helper.exe	83
PID 3624 wrote to memory of 4760	3624	helper.exe	81
PID 3624 wrote to memory of 4760	3624	helper.exe	81
PID 3624 wrote to memory of 4760	3624	helper.exe	81
PID 3624 wrote to memory of 4760	3624	helper.exe	81
PID 3624 wrote to memory of 4760	3624	helper.exe	81

C:\Users\Admin\AppData\Local\Temp\141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe
"C:\Users\Admin\AppData\Local\Temp\141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:644
- C:\Users\Admin\AppData\Local\Temp\141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe
  C:\Users\Admin\AppData\Local\Temp\141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:4760
- - C:\ProgramData\538748\helper.exe
    "C:\ProgramData\538748\helper.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2100
  - - C:\ProgramData\538748\helper.exe
      C:\ProgramData\538748\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:3624

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\538748\helper.exe

Filesize
504KB

MD5
442e1935e53619952a33090b4ba5aacd

SHA1
f98168d3740aa39572457fdb18646167bc713030

SHA256
141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9

SHA512
674f40dc2adb1a25d498c88a809fffcbd448119140d910a15fa535b97d8847a99942598b5f4a8622e4041abb4191e71fe7fba70f1966839a114b96d9722bfe36

Download Submit
C:\ProgramData\538748\helper.exe

Filesize
504KB

MD5
442e1935e53619952a33090b4ba5aacd

SHA1
f98168d3740aa39572457fdb18646167bc713030

SHA256
141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9

SHA512
674f40dc2adb1a25d498c88a809fffcbd448119140d910a15fa535b97d8847a99942598b5f4a8622e4041abb4191e71fe7fba70f1966839a114b96d9722bfe36

Download Submit
C:\ProgramData\538748\helper.exe

Filesize
504KB

MD5
442e1935e53619952a33090b4ba5aacd

SHA1
f98168d3740aa39572457fdb18646167bc713030

SHA256
141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9

SHA512
674f40dc2adb1a25d498c88a809fffcbd448119140d910a15fa535b97d8847a99942598b5f4a8622e4041abb4191e71fe7fba70f1966839a114b96d9722bfe36

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\141ed19ec18802d3fc24038503e8c361a2653ae79935e3d7cda14172dbc43be9.exe.log

Filesize
496B

MD5
7baa6583f69f63f7230df9bf98448356

SHA1
fe9eb85b57192362da704a3c130377fe83862320

SHA256
a632504621b4cac1d5ba5465c7ad9b30f3d036e9838682506782124a211bed4f

SHA512
0e72541791281c0fdac1f5fc6beea0b9eb8766b2a386aecb92cb8a44e5b59b7114c79194393ddeff957ffe86021a311caed7ce2731b863d97ad441870efbc051

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\helper.exe.log

Filesize
496B

MD5
7baa6583f69f63f7230df9bf98448356

SHA1
fe9eb85b57192362da704a3c130377fe83862320

SHA256
a632504621b4cac1d5ba5465c7ad9b30f3d036e9838682506782124a211bed4f

SHA512
0e72541791281c0fdac1f5fc6beea0b9eb8766b2a386aecb92cb8a44e5b59b7114c79194393ddeff957ffe86021a311caed7ce2731b863d97ad441870efbc051

Download Submit
memory/644-136-0x0000000075300000-0x00000000758B1000-memory.dmp

Filesize
5.7MB

Download
memory/644-132-0x0000000075300000-0x00000000758B1000-memory.dmp

Filesize
5.7MB

Download
memory/2100-145-0x0000000075300000-0x00000000758B1000-memory.dmp

Filesize
5.7MB

Download
memory/3624-151-0x0000000075300000-0x00000000758B1000-memory.dmp

Filesize
5.7MB

Download
memory/3624-146-0x0000000075300000-0x00000000758B1000-memory.dmp

Filesize
5.7MB

Download
memory/4760-137-0x0000000075300000-0x00000000758B1000-memory.dmp

Filesize
5.7MB

Download
memory/4760-134-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/4760-147-0x0000000075300000-0x00000000758B1000-memory.dmp

Filesize
5.7MB

Download
memory/4760-148-0x0000000006DB0000-0x0000000006DC7000-memory.dmp

Filesize
92KB

Download
memory/4760-150-0x0000000006DB0000-0x0000000006DC7000-memory.dmp

Filesize
92KB

Download
memory/4760-149-0x0000000006DB0000-0x0000000006DC7000-memory.dmp

Filesize
92KB

Download
memory/4760-152-0x0000000075300000-0x00000000758B1000-memory.dmp

Filesize
5.7MB

Download