luminosity | 51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
27-11-2022 08:13

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General

Target

51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe
Size

452KB
MD5

d94071cc7092986d52903d1443421aeb
SHA1

45d4f98b528d7c2820d98da77e4c564f03c426e3
SHA256

51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05
SHA512

66f232361bb7549124fe6b7a962b33518e3a73c1480f11bac695b12c9d7515a067cd87dfbaafa84321c7ee851c70b60b040a212073c36f45267eb6cf33495577
SSDEEP

12288:tdOKIut/dpyKpxi2A/AQDWYs7Is+uMpu4x:D7t/dpni4QGIE2u

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\""	vbc.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\\294640\\vbc.exe\""	vbc.exe

Executes dropped EXE 2 IoCs

pid	Process
2180	vbc.exe
3608	vbc.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	51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

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\java = "\"C:\\ProgramData\\294640\\vbc.exe\""	vbc.exe

Drops file in System32 directory 2 IoCs

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5064 set thread context of 1748	5064	51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe	82
PID 2180 set thread context of 3608	2180	vbc.exe	90

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
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
1748	51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe
1748	51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe
3608	vbc.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1748	51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5064	51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe
Token: SeDebugPrivilege	2180	vbc.exe
Token: SeDebugPrivilege	3608	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3608	vbc.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 5064 wrote to memory of 1748	5064	51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe	82
PID 5064 wrote to memory of 1748	5064	51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe	82
PID 5064 wrote to memory of 1748	5064	51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe	82
PID 5064 wrote to memory of 1748	5064	51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe	82
PID 5064 wrote to memory of 1748	5064	51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe	82
PID 5064 wrote to memory of 1748	5064	51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe	82
PID 5064 wrote to memory of 1748	5064	51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe	82
PID 5064 wrote to memory of 1748	5064	51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe	82
PID 1748 wrote to memory of 2180	1748	51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe	85
PID 1748 wrote to memory of 2180	1748	51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe	85
PID 1748 wrote to memory of 2180	1748	51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe	85
PID 2180 wrote to memory of 3608	2180	vbc.exe	90
PID 2180 wrote to memory of 3608	2180	vbc.exe	90
PID 2180 wrote to memory of 3608	2180	vbc.exe	90
PID 2180 wrote to memory of 3608	2180	vbc.exe	90
PID 2180 wrote to memory of 3608	2180	vbc.exe	90
PID 2180 wrote to memory of 3608	2180	vbc.exe	90
PID 2180 wrote to memory of 3608	2180	vbc.exe	90
PID 2180 wrote to memory of 3608	2180	vbc.exe	90
PID 3608 wrote to memory of 1748	3608	vbc.exe	82
PID 3608 wrote to memory of 1748	3608	vbc.exe	82
PID 3608 wrote to memory of 1748	3608	vbc.exe	82
PID 3608 wrote to memory of 1748	3608	vbc.exe	82
PID 3608 wrote to memory of 1748	3608	vbc.exe	82

C:\Users\Admin\AppData\Local\Temp\51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe
"C:\Users\Admin\AppData\Local\Temp\51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5064
- C:\Users\Admin\AppData\Local\Temp\51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe
  "C:\Users\Admin\AppData\Local\Temp\51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:1748
- - C:\ProgramData\294640\vbc.exe
    "C:\ProgramData\294640\vbc.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2180
  - - C:\ProgramData\294640\vbc.exe
      "C:\ProgramData\294640\vbc.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:3608

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

T1064

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Scripting

T1064

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\294640\vbc.exe

Filesize
452KB

MD5
d94071cc7092986d52903d1443421aeb

SHA1
45d4f98b528d7c2820d98da77e4c564f03c426e3

SHA256
51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05

SHA512
66f232361bb7549124fe6b7a962b33518e3a73c1480f11bac695b12c9d7515a067cd87dfbaafa84321c7ee851c70b60b040a212073c36f45267eb6cf33495577

Download Submit
C:\ProgramData\294640\vbc.exe

Filesize
452KB

MD5
d94071cc7092986d52903d1443421aeb

SHA1
45d4f98b528d7c2820d98da77e4c564f03c426e3

SHA256
51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05

SHA512
66f232361bb7549124fe6b7a962b33518e3a73c1480f11bac695b12c9d7515a067cd87dfbaafa84321c7ee851c70b60b040a212073c36f45267eb6cf33495577

Download Submit
C:\ProgramData\294640\vbc.exe

Filesize
452KB

MD5
d94071cc7092986d52903d1443421aeb

SHA1
45d4f98b528d7c2820d98da77e4c564f03c426e3

SHA256
51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05

SHA512
66f232361bb7549124fe6b7a962b33518e3a73c1480f11bac695b12c9d7515a067cd87dfbaafa84321c7ee851c70b60b040a212073c36f45267eb6cf33495577

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\51e5d9df867d1e8eab396d01821398748393968f62992cfe94da48b3b2008a05.exe.log

Filesize
496B

MD5
cb76b18ebed3a9f05a14aed43d35fba6

SHA1
836a4b4e351846fca08b84149cb734cb59b8c0d6

SHA256
8d0edecf54cbbdf7981c8e41a3ed8621503188a87415f9af0fb8d890b138c349

SHA512
7631141e4a6dda29452ada666326837372cd3d045f773006f63d9eff15d9432ed00029d9108a72c1a3b858377600a2aab2c9ec03764285c8801b6019babcf21c

Download Submit
memory/1748-143-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/1748-150-0x00000000067A0000-0x00000000067B7000-memory.dmp

Filesize
92KB

Download
memory/1748-153-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/1748-152-0x00000000067A0000-0x00000000067B7000-memory.dmp

Filesize
92KB

Download
memory/1748-138-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/1748-151-0x00000000067A0000-0x00000000067B7000-memory.dmp

Filesize
92KB

Download
memory/2180-142-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/2180-148-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/2180-144-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/3608-146-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3608-149-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/3608-154-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/5064-133-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/5064-132-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/5064-137-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download