luminosity | c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6

Analysis

max time kernel
165s
max time network
179s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
26-11-2022 22:08

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General

Target

c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe
Size

420KB
MD5

082511600ec66244ec7ffe1a57c6f6ea
SHA1

f7a942011e8969fde4e196f496b497a5694e747f
SHA256

c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6
SHA512

3d8dbb120d10243af503f0d24ea225b281919046db21ac0f6cd980480d8e4e41ac5a53a1904011ac9161893c1cf550cdbf1cd7b9dca2c7e605475da84e839ea0
SSDEEP

12288:NWmWT0MI9WCedrA70Hd6lHnBhqITb3bDTt0BiOLzu3WT:MmWTE9WCSrGdtBtTbOBQ3

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\""	sysmon.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\394723\\sysmon.exe\""	sysmon.exe

Executes dropped EXE 2 IoCs

pid	Process
1188	sysmon.exe
2744	sysmon.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\System Monitor = "\"C:\\ProgramData\\394723\\sysmon.exe\""	sysmon.exe

Drops file in System32 directory 2 IoCs

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 516 set thread context of 2072	516	c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe	81
PID 1188 set thread context of 2744	1188	sysmon.exe	84

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
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2072	c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe
2072	c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe
2744	sysmon.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2072	c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2744	sysmon.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2744	sysmon.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 516 wrote to memory of 2072	516	c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe	81
PID 516 wrote to memory of 2072	516	c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe	81
PID 516 wrote to memory of 2072	516	c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe	81
PID 516 wrote to memory of 2072	516	c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe	81
PID 516 wrote to memory of 2072	516	c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe	81
PID 516 wrote to memory of 2072	516	c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe	81
PID 516 wrote to memory of 2072	516	c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe	81
PID 516 wrote to memory of 2072	516	c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe	81
PID 2072 wrote to memory of 1188	2072	c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe	83
PID 2072 wrote to memory of 1188	2072	c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe	83
PID 2072 wrote to memory of 1188	2072	c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe	83
PID 1188 wrote to memory of 2744	1188	sysmon.exe	84
PID 1188 wrote to memory of 2744	1188	sysmon.exe	84
PID 1188 wrote to memory of 2744	1188	sysmon.exe	84
PID 1188 wrote to memory of 2744	1188	sysmon.exe	84
PID 1188 wrote to memory of 2744	1188	sysmon.exe	84
PID 1188 wrote to memory of 2744	1188	sysmon.exe	84
PID 1188 wrote to memory of 2744	1188	sysmon.exe	84
PID 1188 wrote to memory of 2744	1188	sysmon.exe	84
PID 2744 wrote to memory of 2072	2744	sysmon.exe	81
PID 2744 wrote to memory of 2072	2744	sysmon.exe	81
PID 2744 wrote to memory of 2072	2744	sysmon.exe	81
PID 2744 wrote to memory of 2072	2744	sysmon.exe	81
PID 2744 wrote to memory of 2072	2744	sysmon.exe	81

C:\Users\Admin\AppData\Local\Temp\c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe
"C:\Users\Admin\AppData\Local\Temp\c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:516
- C:\Users\Admin\AppData\Local\Temp\c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe
  "C:\Users\Admin\AppData\Local\Temp\c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:2072
- - C:\ProgramData\394723\sysmon.exe
    "C:\ProgramData\394723\sysmon.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1188
  - - C:\ProgramData\394723\sysmon.exe
      "C:\ProgramData\394723\sysmon.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:2744

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\394723\sysmon.exe

Filesize
420KB

MD5
082511600ec66244ec7ffe1a57c6f6ea

SHA1
f7a942011e8969fde4e196f496b497a5694e747f

SHA256
c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6

SHA512
3d8dbb120d10243af503f0d24ea225b281919046db21ac0f6cd980480d8e4e41ac5a53a1904011ac9161893c1cf550cdbf1cd7b9dca2c7e605475da84e839ea0

Download Submit
C:\ProgramData\394723\sysmon.exe

Filesize
420KB

MD5
082511600ec66244ec7ffe1a57c6f6ea

SHA1
f7a942011e8969fde4e196f496b497a5694e747f

SHA256
c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6

SHA512
3d8dbb120d10243af503f0d24ea225b281919046db21ac0f6cd980480d8e4e41ac5a53a1904011ac9161893c1cf550cdbf1cd7b9dca2c7e605475da84e839ea0

Download Submit
C:\ProgramData\394723\sysmon.exe

Filesize
420KB

MD5
082511600ec66244ec7ffe1a57c6f6ea

SHA1
f7a942011e8969fde4e196f496b497a5694e747f

SHA256
c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6

SHA512
3d8dbb120d10243af503f0d24ea225b281919046db21ac0f6cd980480d8e4e41ac5a53a1904011ac9161893c1cf550cdbf1cd7b9dca2c7e605475da84e839ea0

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\c4c2fe92cb601c0cc6ac87b5541d7c1a462801942475351c4dfda26296faefa6.exe.log

Filesize
411B

MD5
39582d3351c79bbe6b34c92b86bb2e15

SHA1
0a5bc37313778570ffd8b7664fd04380446641f3

SHA256
a77ea8a3f342c18bc35e84d0c0255345ae259f80dd9ac4837760e5e4d5f593aa

SHA512
4e6acca2e4fd55d3dcdcaba0155364dcf17924113f23bb58c895e0119a79906f4e3fd1950d1dbb405cc02509373a1e2057a46dbc364189779ae96abb19214283

Download Submit
memory/516-132-0x0000000074ED0000-0x0000000075481000-memory.dmp

Filesize
5.7MB

Download
memory/516-136-0x0000000074ED0000-0x0000000075481000-memory.dmp

Filesize
5.7MB

Download
memory/1188-146-0x0000000074ED0000-0x0000000075481000-memory.dmp

Filesize
5.7MB

Download
memory/1188-145-0x0000000074ED0000-0x0000000075481000-memory.dmp

Filesize
5.7MB

Download
memory/2072-148-0x0000000006C60000-0x0000000006C77000-memory.dmp

Filesize
92KB

Download
memory/2072-138-0x0000000074ED0000-0x0000000075481000-memory.dmp

Filesize
5.7MB

Download
memory/2072-137-0x0000000074ED0000-0x0000000075481000-memory.dmp

Filesize
5.7MB

Download
memory/2072-134-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2072-150-0x0000000006C60000-0x0000000006C77000-memory.dmp

Filesize
92KB

Download
memory/2072-149-0x0000000006C60000-0x0000000006C77000-memory.dmp

Filesize
92KB

Download
memory/2072-152-0x0000000074ED0000-0x0000000075481000-memory.dmp

Filesize
5.7MB

Download
memory/2744-147-0x0000000074ED0000-0x0000000075481000-memory.dmp

Filesize
5.7MB

Download
memory/2744-151-0x0000000074ED0000-0x0000000075481000-memory.dmp

Filesize
5.7MB

Download