luminosity | c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b

Analysis

max time kernel
153s
max time network
154s
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 17:51

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General

Target

c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe
Size

747KB
MD5

1c37fcc88038b6b8fc85accd0ebc8343
SHA1

101b3727f1145d9b4483540b00d48b6cf9a03943
SHA256

c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b
SHA512

84905fcaeda25bac0fea20b4270f6d8724889b8a4e2567b8f64caad4cc82d6560812cd9ebcbcf3478910c97e857254b444d34755c519681c9d4161c969b2d939
SSDEEP

12288:B8uHgGWdpwVNZ373QQi2p9CwhiifzhHj2gROW65Ruy6NejRPfD54pw:XWnw+R6CwPbhFRx65RuNejBftP

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\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\301520\\helper.exe\""	helper.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,\"C:\\Windows\\system32\\clientsvr.exe\""	helper.exe

Executes dropped EXE 3 IoCs

pid	Process
4984	helper.exe
3196	helper.exe
4788	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	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.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\Helper = "\"C:\\ProgramData\\301520\\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 4 IoCs

description	pid	Process	procid_target
PID 1952 set thread context of 4196	1952	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	76
PID 4196 set thread context of 3504	4196	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	77
PID 4984 set thread context of 3196	4984	helper.exe	81
PID 3196 set thread context of 4788	3196	helper.exe	82

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
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
3504	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe
3504	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe
4788	helper.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3504	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4788	helper.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4788	helper.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 1952 wrote to memory of 4196	1952	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	76
PID 1952 wrote to memory of 4196	1952	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	76
PID 1952 wrote to memory of 4196	1952	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	76
PID 1952 wrote to memory of 4196	1952	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	76
PID 1952 wrote to memory of 4196	1952	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	76
PID 1952 wrote to memory of 4196	1952	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	76
PID 1952 wrote to memory of 4196	1952	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	76
PID 1952 wrote to memory of 4196	1952	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	76
PID 4196 wrote to memory of 3504	4196	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	77
PID 4196 wrote to memory of 3504	4196	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	77
PID 4196 wrote to memory of 3504	4196	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	77
PID 4196 wrote to memory of 3504	4196	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	77
PID 4196 wrote to memory of 3504	4196	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	77
PID 4196 wrote to memory of 3504	4196	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	77
PID 4196 wrote to memory of 3504	4196	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	77
PID 4196 wrote to memory of 3504	4196	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	77
PID 3504 wrote to memory of 4984	3504	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	80
PID 3504 wrote to memory of 4984	3504	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	80
PID 3504 wrote to memory of 4984	3504	c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe	80
PID 4984 wrote to memory of 3196	4984	helper.exe	81
PID 4984 wrote to memory of 3196	4984	helper.exe	81
PID 4984 wrote to memory of 3196	4984	helper.exe	81
PID 4984 wrote to memory of 3196	4984	helper.exe	81
PID 4984 wrote to memory of 3196	4984	helper.exe	81
PID 4984 wrote to memory of 3196	4984	helper.exe	81
PID 4984 wrote to memory of 3196	4984	helper.exe	81
PID 4984 wrote to memory of 3196	4984	helper.exe	81
PID 3196 wrote to memory of 4788	3196	helper.exe	82
PID 3196 wrote to memory of 4788	3196	helper.exe	82
PID 3196 wrote to memory of 4788	3196	helper.exe	82
PID 3196 wrote to memory of 4788	3196	helper.exe	82
PID 3196 wrote to memory of 4788	3196	helper.exe	82
PID 3196 wrote to memory of 4788	3196	helper.exe	82
PID 3196 wrote to memory of 4788	3196	helper.exe	82
PID 3196 wrote to memory of 4788	3196	helper.exe	82
PID 4788 wrote to memory of 3504	4788	helper.exe	77
PID 4788 wrote to memory of 3504	4788	helper.exe	77
PID 4788 wrote to memory of 3504	4788	helper.exe	77
PID 4788 wrote to memory of 3504	4788	helper.exe	77
PID 4788 wrote to memory of 3504	4788	helper.exe	77

C:\Users\Admin\AppData\Local\Temp\c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe
"C:\Users\Admin\AppData\Local\Temp\c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1952
- C:\Users\Admin\AppData\Local\Temp\c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe
  "C:\Users\Admin\AppData\Local\Temp\c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:4196
- - C:\Users\Admin\AppData\Local\Temp\c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe
    "C:\Users\Admin\AppData\Local\Temp\c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe"
    3⤵
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: RenamesItself
    - Suspicious use of WriteProcessMemory
    PID:3504
  - - C:\ProgramData\301520\helper.exe
      "C:\ProgramData\301520\helper.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious use of WriteProcessMemory
      PID:4984
    - - C:\ProgramData\301520\helper.exe
        
        "C:\ProgramData\301520\helper.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious use of WriteProcessMemory
        
        PID:3196
      - C:\ProgramData\301520\helper.exe
        
        "C:\ProgramData\301520\helper.exe"
        6⤵
        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:4788

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\301520\helper.exe

Filesize
747KB

MD5
1c37fcc88038b6b8fc85accd0ebc8343

SHA1
101b3727f1145d9b4483540b00d48b6cf9a03943

SHA256
c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b

SHA512
84905fcaeda25bac0fea20b4270f6d8724889b8a4e2567b8f64caad4cc82d6560812cd9ebcbcf3478910c97e857254b444d34755c519681c9d4161c969b2d939

Download Submit
C:\ProgramData\301520\helper.exe

Filesize
747KB

MD5
1c37fcc88038b6b8fc85accd0ebc8343

SHA1
101b3727f1145d9b4483540b00d48b6cf9a03943

SHA256
c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b

SHA512
84905fcaeda25bac0fea20b4270f6d8724889b8a4e2567b8f64caad4cc82d6560812cd9ebcbcf3478910c97e857254b444d34755c519681c9d4161c969b2d939

Download Submit
C:\ProgramData\301520\helper.exe

Filesize
747KB

MD5
1c37fcc88038b6b8fc85accd0ebc8343

SHA1
101b3727f1145d9b4483540b00d48b6cf9a03943

SHA256
c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b

SHA512
84905fcaeda25bac0fea20b4270f6d8724889b8a4e2567b8f64caad4cc82d6560812cd9ebcbcf3478910c97e857254b444d34755c519681c9d4161c969b2d939

Download Submit
C:\ProgramData\301520\helper.exe

Filesize
747KB

MD5
1c37fcc88038b6b8fc85accd0ebc8343

SHA1
101b3727f1145d9b4483540b00d48b6cf9a03943

SHA256
c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b

SHA512
84905fcaeda25bac0fea20b4270f6d8724889b8a4e2567b8f64caad4cc82d6560812cd9ebcbcf3478910c97e857254b444d34755c519681c9d4161c969b2d939

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\c818d9d86c869925d4ff82e2d17ac77300befcd1fe308191af7f10b246e37a6b.exe.log

Filesize
223B

MD5
1cc4c5b51e50ec74a6880b50ecbee28b

SHA1
1ba7bb0e86c3d23fb0dc8bf16798d37afb4c4aba

SHA256
0556734df26e82e363d47748a3ceedd5c23ea4b9ded6e68bd5c373c1c9f8777b

SHA512
5d5532602b381125b24a9bd78781ed722ce0c862214ef17e7d224d269e6e7045c919ab19896dd8d9ae8920726092efe0ffb776a77a9a9539c4a70188d5a4c706

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

Filesize
223B

MD5
1cc4c5b51e50ec74a6880b50ecbee28b

SHA1
1ba7bb0e86c3d23fb0dc8bf16798d37afb4c4aba

SHA256
0556734df26e82e363d47748a3ceedd5c23ea4b9ded6e68bd5c373c1c9f8777b

SHA512
5d5532602b381125b24a9bd78781ed722ce0c862214ef17e7d224d269e6e7045c919ab19896dd8d9ae8920726092efe0ffb776a77a9a9539c4a70188d5a4c706

Download Submit
memory/1952-132-0x0000000074850000-0x0000000074E01000-memory.dmp

Filesize
5.7MB

Download
memory/1952-138-0x0000000074850000-0x0000000074E01000-memory.dmp

Filesize
5.7MB

Download
memory/3196-164-0x0000000074850000-0x0000000074E01000-memory.dmp

Filesize
5.7MB

Download
memory/3504-167-0x0000000074850000-0x0000000074E01000-memory.dmp

Filesize
5.7MB

Download
memory/3504-169-0x0000000007100000-0x0000000007117000-memory.dmp

Filesize
92KB

Download
memory/3504-171-0x0000000007100000-0x0000000007117000-memory.dmp

Filesize
92KB

Download
memory/3504-140-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/3504-146-0x0000000074850000-0x0000000074E01000-memory.dmp

Filesize
5.7MB

Download
memory/3504-170-0x0000000007100000-0x0000000007117000-memory.dmp

Filesize
92KB

Download
memory/3504-142-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/3504-172-0x0000000074850000-0x0000000074E01000-memory.dmp

Filesize
5.7MB

Download
memory/4196-145-0x0000000074850000-0x0000000074E01000-memory.dmp

Filesize
5.7MB

Download
memory/4196-135-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4196-166-0x0000000074850000-0x0000000074E01000-memory.dmp

Filesize
5.7MB

Download
memory/4196-134-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4196-136-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4788-165-0x0000000074850000-0x0000000074E01000-memory.dmp

Filesize
5.7MB

Download
memory/4788-168-0x0000000074850000-0x0000000074E01000-memory.dmp

Filesize
5.7MB

Download
memory/4984-159-0x0000000074850000-0x0000000074E01000-memory.dmp

Filesize
5.7MB

Download