luminosity | 28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502

Analysis

max time kernel
148s
max time network
158s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
26-11-2022 22:26

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General

Target

28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe
Size

276KB
MD5

b61e284fd4e10513f55de906f6669324
SHA1

e3e164e41098f57d1f4044c368268337a0dd783c
SHA256

28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502
SHA512

e9eea51e4403a1405abd5179fcdbb396a1680c0b11f464b315257f0e242bf9a9681b324920ed64f7b7e3c7214b6c19294d0f91df8a31c4e3019684218fcb68f6
SSDEEP

6144:NlLi/M8rU4Yewg4LKEIg5A2bjNIjZK/7l5rdjcH2xXmV1O2qZZ:No/M8FVwJzxJ/frh82m1+Z

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\""	Explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\110947\\Explorer.exe\""	Explorer.exe

Executes dropped EXE 2 IoCs

pid	Process
320	Explorer.exe
688	Explorer.exe

Loads dropped DLL 2 IoCs

pid	Process
1456	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe
1456	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.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-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "\"C:\\ProgramData\\110947\\Explorer.exe\""	Explorer.exe

Drops file in System32 directory 2 IoCs

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 748 set thread context of 1456	748	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe	28
PID 320 set thread context of 688	320	Explorer.exe	31

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 6 IoCs

pid	Process
688	Explorer.exe
688	Explorer.exe
688	Explorer.exe
688	Explorer.exe
688	Explorer.exe
320	Explorer.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1456	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	748	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe
Token: SeDebugPrivilege	320	Explorer.exe
Token: SeDebugPrivilege	688	Explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
688	Explorer.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 748 wrote to memory of 1456	748	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe	28
PID 748 wrote to memory of 1456	748	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe	28
PID 748 wrote to memory of 1456	748	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe	28
PID 748 wrote to memory of 1456	748	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe	28
PID 748 wrote to memory of 1456	748	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe	28
PID 748 wrote to memory of 1456	748	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe	28
PID 748 wrote to memory of 1456	748	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe	28
PID 748 wrote to memory of 1456	748	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe	28
PID 748 wrote to memory of 1456	748	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe	28
PID 1456 wrote to memory of 320	1456	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe	30
PID 1456 wrote to memory of 320	1456	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe	30
PID 1456 wrote to memory of 320	1456	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe	30
PID 1456 wrote to memory of 320	1456	28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe	30
PID 320 wrote to memory of 688	320	Explorer.exe	31
PID 320 wrote to memory of 688	320	Explorer.exe	31
PID 320 wrote to memory of 688	320	Explorer.exe	31
PID 320 wrote to memory of 688	320	Explorer.exe	31
PID 320 wrote to memory of 688	320	Explorer.exe	31
PID 320 wrote to memory of 688	320	Explorer.exe	31
PID 320 wrote to memory of 688	320	Explorer.exe	31
PID 320 wrote to memory of 688	320	Explorer.exe	31
PID 320 wrote to memory of 688	320	Explorer.exe	31
PID 688 wrote to memory of 320	688	Explorer.exe	30
PID 688 wrote to memory of 320	688	Explorer.exe	30
PID 688 wrote to memory of 320	688	Explorer.exe	30
PID 688 wrote to memory of 320	688	Explorer.exe	30
PID 688 wrote to memory of 320	688	Explorer.exe	30

C:\Users\Admin\AppData\Local\Temp\28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe
"C:\Users\Admin\AppData\Local\Temp\28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:748
- C:\Users\Admin\AppData\Local\Temp\28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe
  "C:\Users\Admin\AppData\Local\Temp\28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:1456
- - C:\ProgramData\110947\Explorer.exe
    "C:\ProgramData\110947\Explorer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:320
  - - C:\ProgramData\110947\Explorer.exe
      "C:\ProgramData\110947\Explorer.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:688

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\110947\Explorer.exe

Filesize
276KB

MD5
b61e284fd4e10513f55de906f6669324

SHA1
e3e164e41098f57d1f4044c368268337a0dd783c

SHA256
28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502

SHA512
e9eea51e4403a1405abd5179fcdbb396a1680c0b11f464b315257f0e242bf9a9681b324920ed64f7b7e3c7214b6c19294d0f91df8a31c4e3019684218fcb68f6

Download Submit
C:\ProgramData\110947\Explorer.exe

Filesize
276KB

MD5
b61e284fd4e10513f55de906f6669324

SHA1
e3e164e41098f57d1f4044c368268337a0dd783c

SHA256
28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502

SHA512
e9eea51e4403a1405abd5179fcdbb396a1680c0b11f464b315257f0e242bf9a9681b324920ed64f7b7e3c7214b6c19294d0f91df8a31c4e3019684218fcb68f6

Download Submit
C:\ProgramData\110947\Explorer.exe

Filesize
276KB

MD5
b61e284fd4e10513f55de906f6669324

SHA1
e3e164e41098f57d1f4044c368268337a0dd783c

SHA256
28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502

SHA512
e9eea51e4403a1405abd5179fcdbb396a1680c0b11f464b315257f0e242bf9a9681b324920ed64f7b7e3c7214b6c19294d0f91df8a31c4e3019684218fcb68f6

Download Submit
\ProgramData\110947\Explorer.exe

Filesize
276KB

MD5
b61e284fd4e10513f55de906f6669324

SHA1
e3e164e41098f57d1f4044c368268337a0dd783c

SHA256
28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502

SHA512
e9eea51e4403a1405abd5179fcdbb396a1680c0b11f464b315257f0e242bf9a9681b324920ed64f7b7e3c7214b6c19294d0f91df8a31c4e3019684218fcb68f6

Download Submit
\ProgramData\110947\Explorer.exe

Filesize
276KB

MD5
b61e284fd4e10513f55de906f6669324

SHA1
e3e164e41098f57d1f4044c368268337a0dd783c

SHA256
28d6ab8ea59513adfbaeacfc0eeac01af84961c2597efd96f7e6160a142ab502

SHA512
e9eea51e4403a1405abd5179fcdbb396a1680c0b11f464b315257f0e242bf9a9681b324920ed64f7b7e3c7214b6c19294d0f91df8a31c4e3019684218fcb68f6

Download Submit
memory/320-92-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/320-76-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/320-104-0x0000000000320000-0x0000000000337000-memory.dmp

Filesize
92KB

Download
memory/320-95-0x0000000000320000-0x0000000000337000-memory.dmp

Filesize
92KB

Download
memory/320-98-0x0000000000320000-0x0000000000337000-memory.dmp

Filesize
92KB

Download
memory/320-101-0x0000000000320000-0x0000000000337000-memory.dmp

Filesize
92KB

Download
memory/320-96-0x0000000000320000-0x0000000000337000-memory.dmp

Filesize
92KB

Download
memory/688-94-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/688-91-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/748-54-0x0000000075B11000-0x0000000075B13000-memory.dmp

Filesize
8KB

Download
memory/748-55-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/748-69-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/1456-77-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/1456-56-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1456-59-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1456-93-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/1456-57-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1456-61-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1456-68-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/1456-64-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1456-66-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download