luminosity | 903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6

Analysis

max time kernel
172s
max time network
179s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
26-11-2022 22:21

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General

Target

903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe
Size

340KB
MD5

9a75c88a2ff5bb528cda6020d33cff63
SHA1

07ffcc093be2fd45e0c3d253b12d068d5cb888db
SHA256

903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6
SHA512

b0cfaef076cf0aae7f94681ea9a3ad7050a378eb2a0c7b0d7803b7a93dd6d681602045e6a6cc987b56df2e805c348aa37b8619210ce2404bbda0e2dd91df8b90
SSDEEP

6144:hEWv7VO2OT9r+Mh5FOQLh2zhaK0K3hdt9GDwg2aUfydY+C2nP:hEWv7VO2OTjvRLSazK3hdVcUfyfC2nP

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-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\173775\\helper.exe\""	helper.exe

Executes dropped EXE 3 IoCs

pid	Process
1828	helper.exe
632	helper.exe
868	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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.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-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Computer Helper = "\"C:\\ProgramData\\173775\\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 5088 set thread context of 936	5088	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe	84
PID 1828 set thread context of 868	1828	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
1828	helper.exe
1828	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
5088	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe
5088	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
936	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe
936	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
1828	helper.exe
1828	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe
868	helper.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
936	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5088	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe
Token: SeDebugPrivilege	1828	helper.exe
Token: SeDebugPrivilege	868	helper.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
868	helper.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 5088 wrote to memory of 936	5088	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe	84
PID 5088 wrote to memory of 936	5088	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe	84
PID 5088 wrote to memory of 936	5088	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe	84
PID 5088 wrote to memory of 936	5088	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe	84
PID 5088 wrote to memory of 936	5088	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe	84
PID 5088 wrote to memory of 936	5088	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe	84
PID 5088 wrote to memory of 936	5088	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe	84
PID 5088 wrote to memory of 936	5088	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe	84
PID 936 wrote to memory of 1828	936	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe	86
PID 936 wrote to memory of 1828	936	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe	86
PID 936 wrote to memory of 1828	936	903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe	86
PID 1828 wrote to memory of 632	1828	helper.exe	87
PID 1828 wrote to memory of 632	1828	helper.exe	87
PID 1828 wrote to memory of 632	1828	helper.exe	87
PID 1828 wrote to memory of 868	1828	helper.exe	88
PID 1828 wrote to memory of 868	1828	helper.exe	88
PID 1828 wrote to memory of 868	1828	helper.exe	88
PID 1828 wrote to memory of 868	1828	helper.exe	88
PID 1828 wrote to memory of 868	1828	helper.exe	88
PID 1828 wrote to memory of 868	1828	helper.exe	88
PID 1828 wrote to memory of 868	1828	helper.exe	88
PID 1828 wrote to memory of 868	1828	helper.exe	88
PID 868 wrote to memory of 5088	868	helper.exe	83
PID 868 wrote to memory of 5088	868	helper.exe	83
PID 868 wrote to memory of 5088	868	helper.exe	83
PID 868 wrote to memory of 5088	868	helper.exe	83
PID 868 wrote to memory of 5088	868	helper.exe	83
PID 868 wrote to memory of 936	868	helper.exe	84
PID 868 wrote to memory of 936	868	helper.exe	84
PID 868 wrote to memory of 936	868	helper.exe	84
PID 868 wrote to memory of 936	868	helper.exe	84
PID 868 wrote to memory of 936	868	helper.exe	84
PID 868 wrote to memory of 1828	868	helper.exe	86
PID 868 wrote to memory of 1828	868	helper.exe	86
PID 868 wrote to memory of 1828	868	helper.exe	86
PID 868 wrote to memory of 1828	868	helper.exe	86
PID 868 wrote to memory of 1828	868	helper.exe	86

C:\Users\Admin\AppData\Local\Temp\903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe
"C:\Users\Admin\AppData\Local\Temp\903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5088
- C:\Users\Admin\AppData\Local\Temp\903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe
  "C:\Users\Admin\AppData\Local\Temp\903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:936
- - C:\ProgramData\173775\helper.exe
    "C:\ProgramData\173775\helper.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1828
  - - C:\ProgramData\173775\helper.exe
      "C:\ProgramData\173775\helper.exe"
      4⤵
      Executes dropped EXE
      PID:632
  - - C:\ProgramData\173775\helper.exe
      "C:\ProgramData\173775\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:868

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\173775\helper.exe

Filesize
340KB

MD5
9a75c88a2ff5bb528cda6020d33cff63

SHA1
07ffcc093be2fd45e0c3d253b12d068d5cb888db

SHA256
903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6

SHA512
b0cfaef076cf0aae7f94681ea9a3ad7050a378eb2a0c7b0d7803b7a93dd6d681602045e6a6cc987b56df2e805c348aa37b8619210ce2404bbda0e2dd91df8b90

Download Submit
C:\ProgramData\173775\helper.exe

Filesize
340KB

MD5
9a75c88a2ff5bb528cda6020d33cff63

SHA1
07ffcc093be2fd45e0c3d253b12d068d5cb888db

SHA256
903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6

SHA512
b0cfaef076cf0aae7f94681ea9a3ad7050a378eb2a0c7b0d7803b7a93dd6d681602045e6a6cc987b56df2e805c348aa37b8619210ce2404bbda0e2dd91df8b90

Download Submit
C:\ProgramData\173775\helper.exe

Filesize
340KB

MD5
9a75c88a2ff5bb528cda6020d33cff63

SHA1
07ffcc093be2fd45e0c3d253b12d068d5cb888db

SHA256
903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6

SHA512
b0cfaef076cf0aae7f94681ea9a3ad7050a378eb2a0c7b0d7803b7a93dd6d681602045e6a6cc987b56df2e805c348aa37b8619210ce2404bbda0e2dd91df8b90

Download Submit
C:\ProgramData\173775\helper.exe

Filesize
340KB

MD5
9a75c88a2ff5bb528cda6020d33cff63

SHA1
07ffcc093be2fd45e0c3d253b12d068d5cb888db

SHA256
903e30cf0d7a6373b3b2e0dd51e76f3c13af36528ff8c9278728b2298b16f8c6

SHA512
b0cfaef076cf0aae7f94681ea9a3ad7050a378eb2a0c7b0d7803b7a93dd6d681602045e6a6cc987b56df2e805c348aa37b8619210ce2404bbda0e2dd91df8b90

Download Submit
memory/868-158-0x0000000075080000-0x0000000075631000-memory.dmp

Filesize
5.7MB

Download
memory/868-147-0x0000000075080000-0x0000000075631000-memory.dmp

Filesize
5.7MB

Download
memory/936-151-0x0000000006FD0000-0x0000000006FE7000-memory.dmp

Filesize
92KB

Download
memory/936-152-0x0000000006FD0000-0x0000000006FE7000-memory.dmp

Filesize
92KB

Download
memory/936-159-0x0000000075080000-0x0000000075631000-memory.dmp

Filesize
5.7MB

Download
memory/936-137-0x0000000075080000-0x0000000075631000-memory.dmp

Filesize
5.7MB

Download
memory/936-135-0x0000000075080000-0x0000000075631000-memory.dmp

Filesize
5.7MB

Download
memory/936-134-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/936-153-0x0000000006FD0000-0x0000000006FE7000-memory.dmp

Filesize
92KB

Download
memory/1828-154-0x0000000001BE0000-0x0000000001BF7000-memory.dmp

Filesize
92KB

Download
memory/1828-141-0x0000000075080000-0x0000000075631000-memory.dmp

Filesize
5.7MB

Download
memory/1828-155-0x0000000001BE0000-0x0000000001BF7000-memory.dmp

Filesize
92KB

Download
memory/1828-156-0x0000000001BE0000-0x0000000001BF7000-memory.dmp

Filesize
92KB

Download
memory/1828-157-0x0000000075080000-0x0000000075631000-memory.dmp

Filesize
5.7MB

Download
memory/5088-150-0x0000000001080000-0x0000000001097000-memory.dmp

Filesize
92KB

Download
memory/5088-132-0x0000000075080000-0x0000000075631000-memory.dmp

Filesize
5.7MB

Download
memory/5088-149-0x0000000001080000-0x0000000001097000-memory.dmp

Filesize
92KB

Download
memory/5088-148-0x0000000001080000-0x0000000001097000-memory.dmp

Filesize
92KB

Download
memory/5088-136-0x0000000075080000-0x0000000075631000-memory.dmp

Filesize
5.7MB

Download