luminosity | 189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec

Analysis

max time kernel
152s
max time network
168s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29-10-2022 13:29

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General

Target

189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe
Size

402KB
MD5

da12d3c00497b8527b7943e3579e52d9
SHA1

9f7489fc7b6171eadc37cf813bd81c6482e101f0
SHA256

189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec
SHA512

7648a29785771f1c5551968e6f09c0b636ec60022efdafd5689c37791cf28ad801b9f0f064f2973c93b5be4b8d2cabbd8d2691e939d225f2456fb3861b8e071e
SSDEEP

6144:8C0O/wK2CBCy0PlwYsmF/rM2SckT/06DCd:OjKeyPQF/rMJT/0

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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\246457\\helper.exe\""	helper.exe

Executes dropped EXE 3 IoCs

pid	Process
3616	helper.exe
388	helper.exe
1876	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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Computer Helper = "\"C:\\ProgramData\\246457\\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 4120 set thread context of 2764	4120	189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe	84
PID 3616 set thread context of 1876	3616	helper.exe	88

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
3616	helper.exe
3616	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
2764	189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe
2764	189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe
1876	helper.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2764	189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4120	189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe
Token: SeDebugPrivilege	3616	helper.exe
Token: SeDebugPrivilege	1876	helper.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1876	helper.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 4120 wrote to memory of 2764	4120	189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe	84
PID 4120 wrote to memory of 2764	4120	189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe	84
PID 4120 wrote to memory of 2764	4120	189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe	84
PID 4120 wrote to memory of 2764	4120	189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe	84
PID 4120 wrote to memory of 2764	4120	189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe	84
PID 4120 wrote to memory of 2764	4120	189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe	84
PID 4120 wrote to memory of 2764	4120	189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe	84
PID 4120 wrote to memory of 2764	4120	189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe	84
PID 2764 wrote to memory of 3616	2764	189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe	86
PID 2764 wrote to memory of 3616	2764	189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe	86
PID 2764 wrote to memory of 3616	2764	189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe	86
PID 3616 wrote to memory of 388	3616	helper.exe	87
PID 3616 wrote to memory of 388	3616	helper.exe	87
PID 3616 wrote to memory of 388	3616	helper.exe	87
PID 3616 wrote to memory of 1876	3616	helper.exe	88
PID 3616 wrote to memory of 1876	3616	helper.exe	88
PID 3616 wrote to memory of 1876	3616	helper.exe	88
PID 3616 wrote to memory of 1876	3616	helper.exe	88
PID 3616 wrote to memory of 1876	3616	helper.exe	88
PID 3616 wrote to memory of 1876	3616	helper.exe	88
PID 3616 wrote to memory of 1876	3616	helper.exe	88
PID 3616 wrote to memory of 1876	3616	helper.exe	88
PID 1876 wrote to memory of 2764	1876	helper.exe	84
PID 1876 wrote to memory of 2764	1876	helper.exe	84
PID 1876 wrote to memory of 2764	1876	helper.exe	84
PID 1876 wrote to memory of 2764	1876	helper.exe	84
PID 1876 wrote to memory of 2764	1876	helper.exe	84

C:\Users\Admin\AppData\Local\Temp\189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe
"C:\Users\Admin\AppData\Local\Temp\189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4120
- C:\Users\Admin\AppData\Local\Temp\189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe
  "C:\Users\Admin\AppData\Local\Temp\189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:2764
- - C:\ProgramData\246457\helper.exe
    "C:\ProgramData\246457\helper.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3616
  - - C:\ProgramData\246457\helper.exe
      "C:\ProgramData\246457\helper.exe"
      4⤵
      Executes dropped EXE
      PID:388
  - - C:\ProgramData\246457\helper.exe
      "C:\ProgramData\246457\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:1876

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\246457\helper.exe

Filesize
402KB

MD5
da12d3c00497b8527b7943e3579e52d9

SHA1
9f7489fc7b6171eadc37cf813bd81c6482e101f0

SHA256
189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec

SHA512
7648a29785771f1c5551968e6f09c0b636ec60022efdafd5689c37791cf28ad801b9f0f064f2973c93b5be4b8d2cabbd8d2691e939d225f2456fb3861b8e071e

Download Submit
C:\ProgramData\246457\helper.exe

Filesize
402KB

MD5
da12d3c00497b8527b7943e3579e52d9

SHA1
9f7489fc7b6171eadc37cf813bd81c6482e101f0

SHA256
189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec

SHA512
7648a29785771f1c5551968e6f09c0b636ec60022efdafd5689c37791cf28ad801b9f0f064f2973c93b5be4b8d2cabbd8d2691e939d225f2456fb3861b8e071e

Download Submit
C:\ProgramData\246457\helper.exe

Filesize
402KB

MD5
da12d3c00497b8527b7943e3579e52d9

SHA1
9f7489fc7b6171eadc37cf813bd81c6482e101f0

SHA256
189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec

SHA512
7648a29785771f1c5551968e6f09c0b636ec60022efdafd5689c37791cf28ad801b9f0f064f2973c93b5be4b8d2cabbd8d2691e939d225f2456fb3861b8e071e

Download Submit
C:\ProgramData\246457\helper.exe

Filesize
402KB

MD5
da12d3c00497b8527b7943e3579e52d9

SHA1
9f7489fc7b6171eadc37cf813bd81c6482e101f0

SHA256
189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec

SHA512
7648a29785771f1c5551968e6f09c0b636ec60022efdafd5689c37791cf28ad801b9f0f064f2973c93b5be4b8d2cabbd8d2691e939d225f2456fb3861b8e071e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\189c62dc575e463968cae907673b30170b261ab707c804d244c8b79e1f4be8ec.exe.log

Filesize
411B

MD5
e2eedda50223a58e2bbe18223c9ceff4

SHA1
72653d8b29e2fbd683be979c4e0903e376352c46

SHA256
7e1b081fe3a560b0fbc63fc97acdf2e42aaa7d291f0bdca4c3a527a19979f060

SHA512
bbdd82180301cfe8b6cc4b03bef68e4587952e6d9428ac28e25f6f21afa516ebc425f80fbc5bede4240260f055423f647c68509674f4add73a6d582e5f39891a

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

Filesize
411B

MD5
e2eedda50223a58e2bbe18223c9ceff4

SHA1
72653d8b29e2fbd683be979c4e0903e376352c46

SHA256
7e1b081fe3a560b0fbc63fc97acdf2e42aaa7d291f0bdca4c3a527a19979f060

SHA512
bbdd82180301cfe8b6cc4b03bef68e4587952e6d9428ac28e25f6f21afa516ebc425f80fbc5bede4240260f055423f647c68509674f4add73a6d582e5f39891a

Download Submit
memory/1876-151-0x0000000074A20000-0x0000000074FD1000-memory.dmp

Filesize
5.7MB

Download
memory/1876-150-0x0000000074A20000-0x0000000074FD1000-memory.dmp

Filesize
5.7MB

Download
memory/2764-152-0x0000000007420000-0x0000000007437000-memory.dmp

Filesize
92KB

Download
memory/2764-138-0x0000000074A20000-0x0000000074FD1000-memory.dmp

Filesize
5.7MB

Download
memory/2764-156-0x0000000074A20000-0x0000000074FD1000-memory.dmp

Filesize
5.7MB

Download
memory/2764-137-0x0000000074A20000-0x0000000074FD1000-memory.dmp

Filesize
5.7MB

Download
memory/2764-153-0x0000000007420000-0x0000000007437000-memory.dmp

Filesize
92KB

Download
memory/2764-135-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/2764-154-0x0000000007420000-0x0000000007437000-memory.dmp

Filesize
92KB

Download
memory/3616-149-0x0000000074A20000-0x0000000074FD1000-memory.dmp

Filesize
5.7MB

Download
memory/3616-142-0x0000000074A20000-0x0000000074FD1000-memory.dmp

Filesize
5.7MB

Download
memory/4120-132-0x0000000074A20000-0x0000000074FD1000-memory.dmp

Filesize
5.7MB

Download
memory/4120-136-0x0000000074A20000-0x0000000074FD1000-memory.dmp

Filesize
5.7MB

Download
memory/4120-133-0x0000000074A20000-0x0000000074FD1000-memory.dmp

Filesize
5.7MB

Download