luminosity | 34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4

Analysis

max time kernel
151s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
30-10-2022 13:16

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General

Target

34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe
Size

316KB
MD5

84948e4fa2b962aeda4416452ebc2580
SHA1

93c8154a6622a70574ecfd98858f2b4e05e48155
SHA256

34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4
SHA512

0fbb4223ef423742dbf180d3a03d5cccf22e7828abd4fb114b278fbc0b8c75c2fd1d93ad2f63597d2ef3004ad4e6621e6911966185a173984b117d13e8980ad0
SSDEEP

6144:G8aP4mbZxGNp5cMzeJfH43t64qUe9jFwAGCBJEiCnlfX1Gx/ZLp/:ZaFf6p5PeBU6xUWFwAGTnd1G7p

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-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\238064\\helper.exe\""	helper.exe

Executes dropped EXE 2 IoCs

pid	Process
3192	helper.exe
4832	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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.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-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Computer Helper = "\"C:\\ProgramData\\238064\\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 2368 set thread context of 848	2368	34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe	91
PID 3192 set thread context of 4832	3192	helper.exe	93

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
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe
4832	helper.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
848	34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2368	34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe
Token: SeDebugPrivilege	3192	helper.exe
Token: SeDebugPrivilege	4832	helper.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4832	helper.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 848	2368	34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe	91
PID 2368 wrote to memory of 848	2368	34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe	91
PID 2368 wrote to memory of 848	2368	34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe	91
PID 2368 wrote to memory of 848	2368	34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe	91
PID 2368 wrote to memory of 848	2368	34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe	91
PID 2368 wrote to memory of 848	2368	34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe	91
PID 2368 wrote to memory of 848	2368	34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe	91
PID 2368 wrote to memory of 848	2368	34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe	91
PID 848 wrote to memory of 3192	848	34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe	92
PID 848 wrote to memory of 3192	848	34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe	92
PID 848 wrote to memory of 3192	848	34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe	92
PID 3192 wrote to memory of 4832	3192	helper.exe	93
PID 3192 wrote to memory of 4832	3192	helper.exe	93
PID 3192 wrote to memory of 4832	3192	helper.exe	93
PID 3192 wrote to memory of 4832	3192	helper.exe	93
PID 3192 wrote to memory of 4832	3192	helper.exe	93
PID 3192 wrote to memory of 4832	3192	helper.exe	93
PID 3192 wrote to memory of 4832	3192	helper.exe	93
PID 3192 wrote to memory of 4832	3192	helper.exe	93

C:\Users\Admin\AppData\Local\Temp\34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe
"C:\Users\Admin\AppData\Local\Temp\34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Users\Admin\AppData\Local\Temp\34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe
  "C:\Users\Admin\AppData\Local\Temp\34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:848
- - C:\ProgramData\238064\helper.exe
    "C:\ProgramData\238064\helper.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3192
  - - C:\ProgramData\238064\helper.exe
      "C:\ProgramData\238064\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
      PID:4832

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\238064\helper.exe

Filesize
316KB

MD5
84948e4fa2b962aeda4416452ebc2580

SHA1
93c8154a6622a70574ecfd98858f2b4e05e48155

SHA256
34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4

SHA512
0fbb4223ef423742dbf180d3a03d5cccf22e7828abd4fb114b278fbc0b8c75c2fd1d93ad2f63597d2ef3004ad4e6621e6911966185a173984b117d13e8980ad0

Download Submit
C:\ProgramData\238064\helper.exe

Filesize
316KB

MD5
84948e4fa2b962aeda4416452ebc2580

SHA1
93c8154a6622a70574ecfd98858f2b4e05e48155

SHA256
34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4

SHA512
0fbb4223ef423742dbf180d3a03d5cccf22e7828abd4fb114b278fbc0b8c75c2fd1d93ad2f63597d2ef3004ad4e6621e6911966185a173984b117d13e8980ad0

Download Submit
C:\ProgramData\238064\helper.exe

Filesize
316KB

MD5
84948e4fa2b962aeda4416452ebc2580

SHA1
93c8154a6622a70574ecfd98858f2b4e05e48155

SHA256
34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4

SHA512
0fbb4223ef423742dbf180d3a03d5cccf22e7828abd4fb114b278fbc0b8c75c2fd1d93ad2f63597d2ef3004ad4e6621e6911966185a173984b117d13e8980ad0

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\34bfe17b32cd412f787543a66f5346437e6deee3aa0c461ccbdd103d67b0e8b4.exe.log

Filesize
676B

MD5
3bc2150211e33cd343b025da5a9b1457

SHA1
a180ee6e62a496a226590390651a1d3708c7b89c

SHA256
ff2e05f53cc9b927bed429bb2df53290223b459c49be1bea6b0ef13c52903787

SHA512
e192903a8d0855203615c2ddd60c45c791492327fcd8a025e1dd1744cc2a526a4e90b8619e19b170f3ed808f3cbe4c839dc86fc70d97c5b0fb86ea529b78442c

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

Filesize
676B

MD5
3bc2150211e33cd343b025da5a9b1457

SHA1
a180ee6e62a496a226590390651a1d3708c7b89c

SHA256
ff2e05f53cc9b927bed429bb2df53290223b459c49be1bea6b0ef13c52903787

SHA512
e192903a8d0855203615c2ddd60c45c791492327fcd8a025e1dd1744cc2a526a4e90b8619e19b170f3ed808f3cbe4c839dc86fc70d97c5b0fb86ea529b78442c

Download Submit
memory/848-151-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/848-136-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/848-135-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/848-141-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2368-137-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2368-132-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2368-133-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/3192-142-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/3192-148-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/3192-143-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/4832-149-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/4832-152-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download