luminosity | 12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c

Analysis

max time kernel
189s
max time network
192s
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, 18:02

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General

Target
12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe
Size 591KB
Sample221126-wmh9lsdb36
SHA256 12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c
MD5 12c1fc5af99577e0569bc732dd486d1a
SHA1 d9dfdbe862677a76a5864212332e2fc74f30c41a
SHA512 1a1e763cc0515b4da6a618d99c3690956419ea3ce6b4410f5ac7c503b9c437ce82b4a4394e2522d4f53f29eeb53850b402460f5a129899f92274d7cdaf54dfee
SSDEEP 12288:1IUvw9jCD23JZQOf2ii/+b13iStZgvmwdbPv2xF:aUvYjCa3QOOiMU13iSIdRve
MD5 SHA1 SHA512 SSDEEP

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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\855173\\sysmon.exe\""	sysmon.exe

Executes dropped EXE 3 IoCs

pid	Process
4028	sysmon.exe
1728	sysmon.exe
4984	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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\System Monitor = "\"C:\\ProgramData\\855173\\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 1444 set thread context of 872	1444	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe	81
PID 4028 set thread context of 4984	4028	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
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
872	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe
872	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe
4984	sysmon.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
872	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4984	sysmon.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4984	sysmon.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1444 wrote to memory of 712	1444	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe	80
PID 1444 wrote to memory of 712	1444	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe	80
PID 1444 wrote to memory of 712	1444	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe	80
PID 1444 wrote to memory of 872	1444	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe	81
PID 1444 wrote to memory of 872	1444	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe	81
PID 1444 wrote to memory of 872	1444	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe	81
PID 1444 wrote to memory of 872	1444	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe	81
PID 1444 wrote to memory of 872	1444	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe	81
PID 1444 wrote to memory of 872	1444	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe	81
PID 1444 wrote to memory of 872	1444	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe	81
PID 1444 wrote to memory of 872	1444	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe	81
PID 872 wrote to memory of 4028	872	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe	82
PID 872 wrote to memory of 4028	872	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe	82
PID 872 wrote to memory of 4028	872	12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe	82
PID 4028 wrote to memory of 1728	4028	sysmon.exe	83
PID 4028 wrote to memory of 1728	4028	sysmon.exe	83
PID 4028 wrote to memory of 1728	4028	sysmon.exe	83
PID 4028 wrote to memory of 4984	4028	sysmon.exe	84
PID 4028 wrote to memory of 4984	4028	sysmon.exe	84
PID 4028 wrote to memory of 4984	4028	sysmon.exe	84
PID 4028 wrote to memory of 4984	4028	sysmon.exe	84
PID 4028 wrote to memory of 4984	4028	sysmon.exe	84
PID 4028 wrote to memory of 4984	4028	sysmon.exe	84
PID 4028 wrote to memory of 4984	4028	sysmon.exe	84
PID 4028 wrote to memory of 4984	4028	sysmon.exe	84
PID 4984 wrote to memory of 872	4984	sysmon.exe	81
PID 4984 wrote to memory of 872	4984	sysmon.exe	81
PID 4984 wrote to memory of 872	4984	sysmon.exe	81
PID 4984 wrote to memory of 872	4984	sysmon.exe	81
PID 4984 wrote to memory of 872	4984	sysmon.exe	81

C:\Users\Admin\AppData\Local\Temp\12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe
"C:\Users\Admin\AppData\Local\Temp\12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1444
- C:\Users\Admin\AppData\Local\Temp\12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe
  "C:\Users\Admin\AppData\Local\Temp\12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe"
  2⤵
  PID:712
- C:\Users\Admin\AppData\Local\Temp\12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe
  "C:\Users\Admin\AppData\Local\Temp\12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:872
- - C:\ProgramData\855173\sysmon.exe
    "C:\ProgramData\855173\sysmon.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4028
  - - C:\ProgramData\855173\sysmon.exe
      "C:\ProgramData\855173\sysmon.exe"
      4⤵
      Executes dropped EXE
      PID:1728
  - - C:\ProgramData\855173\sysmon.exe
      "C:\ProgramData\855173\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:4984

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

sysmon.exe

Path C:\ProgramData\855173\sysmon.exe
Size 591KB
SHA256 12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c
MD5 12c1fc5af99577e0569bc732dd486d1a
SHA1 d9dfdbe862677a76a5864212332e2fc74f30c41a
SHA512 1a1e763cc0515b4da6a618d99c3690956419ea3ce6b4410f5ac7c503b9c437ce82b4a4394e2522d4f53f29eeb53850b402460f5a129899f92274d7cdaf54dfee
SSDEEP 12288:1IUvw9jCD23JZQOf2ii/+b13iStZgvmwdbPv2xF:aUvYjCa3QOOiMU13iSIdRve
MD5 SHA1 SHA512 SSDEEP

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sysmon.exe

Path C:\ProgramData\855173\sysmon.exe
Size 591KB
SHA256 12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c
MD5 12c1fc5af99577e0569bc732dd486d1a
SHA1 d9dfdbe862677a76a5864212332e2fc74f30c41a
SHA512 1a1e763cc0515b4da6a618d99c3690956419ea3ce6b4410f5ac7c503b9c437ce82b4a4394e2522d4f53f29eeb53850b402460f5a129899f92274d7cdaf54dfee
SSDEEP 12288:1IUvw9jCD23JZQOf2ii/+b13iStZgvmwdbPv2xF:aUvYjCa3QOOiMU13iSIdRve
MD5 SHA1 SHA512 SSDEEP

Submit Download

sysmon.exe

Path C:\ProgramData\855173\sysmon.exe
Size 591KB
SHA256 12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c
MD5 12c1fc5af99577e0569bc732dd486d1a
SHA1 d9dfdbe862677a76a5864212332e2fc74f30c41a
SHA512 1a1e763cc0515b4da6a618d99c3690956419ea3ce6b4410f5ac7c503b9c437ce82b4a4394e2522d4f53f29eeb53850b402460f5a129899f92274d7cdaf54dfee
SSDEEP 12288:1IUvw9jCD23JZQOf2ii/+b13iStZgvmwdbPv2xF:aUvYjCa3QOOiMU13iSIdRve
MD5 SHA1 SHA512 SSDEEP

Submit Download

sysmon.exe

Path C:\ProgramData\855173\sysmon.exe
Size 591KB
SHA256 12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c
MD5 12c1fc5af99577e0569bc732dd486d1a
SHA1 d9dfdbe862677a76a5864212332e2fc74f30c41a
SHA512 1a1e763cc0515b4da6a618d99c3690956419ea3ce6b4410f5ac7c503b9c437ce82b4a4394e2522d4f53f29eeb53850b402460f5a129899f92274d7cdaf54dfee
SSDEEP 12288:1IUvw9jCD23JZQOf2ii/+b13iStZgvmwdbPv2xF:aUvYjCa3QOOiMU13iSIdRve
MD5 SHA1 SHA512 SSDEEP

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12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\12683060f2e173014a172cebbe5f67354a8e2cd8f9a5b1197a1268d9c60fa77c.exe.log
Size 312B
SHA256 807bdfa62a4312030c1ed54981674cff77f6108e6b4957754cabb810098ce082
MD5 d4b49ac61a6cac139f96450777c10204
SHA1 92089d33442c9e2eaceac3ed8db6a7168f938e5a
SHA512 eb13a0e7f0d4b44db7e8d0625ba1ee6a036083c39c24b85493d3ec9074ada03eb7003b97bd92ed5f2baaf26295a4690303332593c4776e75da5bc3b6adbc3ea6
MD5 SHA1 SHA512

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memory/872-153-0x00000000747D0000-0x0000000074D81000-memory.dmp

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memory/872-156-0x0000000006940000-0x0000000006957000-memory.dmp

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memory/872-159-0x00000000747D0000-0x0000000074D81000-memory.dmp

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memory/872-138-0x00000000747D0000-0x0000000074D81000-memory.dmp

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memory/872-136-0x0000000000400000-0x000000000043E000-memory.dmp

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memory/872-155-0x0000000006940000-0x0000000006957000-memory.dmp

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memory/872-134-0x0000000000400000-0x000000000043E000-memory.dmp

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memory/872-154-0x0000000006940000-0x0000000006957000-memory.dmp

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memory/1444-132-0x00000000747D0000-0x0000000074D81000-memory.dmp

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memory/1444-139-0x00000000747D0000-0x0000000074D81000-memory.dmp

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memory/4028-151-0x00000000747D0000-0x0000000074D81000-memory.dmp

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memory/4028-143-0x00000000747D0000-0x0000000074D81000-memory.dmp

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memory/4984-152-0x00000000747D0000-0x0000000074D81000-memory.dmp

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memory/4984-157-0x00000000747D0000-0x0000000074D81000-memory.dmp

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