luminosity | 1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855

Analysis

max time kernel
151s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
27-11-2022 06:15

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General

Target

1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe
Size

1.5MB
MD5

5c1e97970f754e08bc9e75494c8b3ab8
SHA1

486db3a90c2f5fe73057f341127d17dea3449a02
SHA256

1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855
SHA512

1642094d09b998a21e4ca0908edd5807550fda56236ccc02642aec3f5449f66d14fc27ca93e86d9b4c3b169f1ddefc59dcf0413ee7facabe2e9698020a56ced5
SSDEEP

12288:gv01G/osLRUggkgP3cVDmLSGU/vZe7jMHO1vMi/iXyvH:Y/N+gIMJmLSGU/vZe7jMHO1vL/iXyv

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-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\134177\\helper.exe\""	helper.exe

Executes dropped EXE 2 IoCs

pid	Process
4940	helper.exe
3108	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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.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-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Computer Helper = "\"C:\\ProgramData\\134177\\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 4892 set thread context of 2008	4892	1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe	85
PID 4940 set thread context of 3108	4940	helper.exe	87

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
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
2008	1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe
2008	1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe
3108	helper.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2008	1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3108	helper.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3108	helper.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4892 wrote to memory of 2008	4892	1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe	85
PID 4892 wrote to memory of 2008	4892	1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe	85
PID 4892 wrote to memory of 2008	4892	1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe	85
PID 4892 wrote to memory of 2008	4892	1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe	85
PID 4892 wrote to memory of 2008	4892	1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe	85
PID 4892 wrote to memory of 2008	4892	1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe	85
PID 4892 wrote to memory of 2008	4892	1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe	85
PID 4892 wrote to memory of 2008	4892	1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe	85
PID 2008 wrote to memory of 4940	2008	1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe	86
PID 2008 wrote to memory of 4940	2008	1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe	86
PID 2008 wrote to memory of 4940	2008	1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe	86
PID 4940 wrote to memory of 3108	4940	helper.exe	87
PID 4940 wrote to memory of 3108	4940	helper.exe	87
PID 4940 wrote to memory of 3108	4940	helper.exe	87
PID 4940 wrote to memory of 3108	4940	helper.exe	87
PID 4940 wrote to memory of 3108	4940	helper.exe	87
PID 4940 wrote to memory of 3108	4940	helper.exe	87
PID 4940 wrote to memory of 3108	4940	helper.exe	87
PID 4940 wrote to memory of 3108	4940	helper.exe	87
PID 3108 wrote to memory of 2008	3108	helper.exe	85
PID 3108 wrote to memory of 2008	3108	helper.exe	85
PID 3108 wrote to memory of 2008	3108	helper.exe	85
PID 3108 wrote to memory of 2008	3108	helper.exe	85
PID 3108 wrote to memory of 2008	3108	helper.exe	85

C:\Users\Admin\AppData\Local\Temp\1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe
"C:\Users\Admin\AppData\Local\Temp\1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4892
- C:\Users\Admin\AppData\Local\Temp\1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe
  "C:\Users\Admin\AppData\Local\Temp\1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:2008
- - C:\ProgramData\134177\helper.exe
    "C:\ProgramData\134177\helper.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4940
  - - C:\ProgramData\134177\helper.exe
      "C:\ProgramData\134177\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
      Suspicious use of WriteProcessMemory
      PID:3108

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\134177\helper.exe

Filesize
1.5MB

MD5
5c1e97970f754e08bc9e75494c8b3ab8

SHA1
486db3a90c2f5fe73057f341127d17dea3449a02

SHA256
1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855

SHA512
1642094d09b998a21e4ca0908edd5807550fda56236ccc02642aec3f5449f66d14fc27ca93e86d9b4c3b169f1ddefc59dcf0413ee7facabe2e9698020a56ced5

Download Submit
C:\ProgramData\134177\helper.exe

Filesize
1.5MB

MD5
5c1e97970f754e08bc9e75494c8b3ab8

SHA1
486db3a90c2f5fe73057f341127d17dea3449a02

SHA256
1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855

SHA512
1642094d09b998a21e4ca0908edd5807550fda56236ccc02642aec3f5449f66d14fc27ca93e86d9b4c3b169f1ddefc59dcf0413ee7facabe2e9698020a56ced5

Download Submit
C:\ProgramData\134177\helper.exe

Filesize
1.5MB

MD5
5c1e97970f754e08bc9e75494c8b3ab8

SHA1
486db3a90c2f5fe73057f341127d17dea3449a02

SHA256
1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855

SHA512
1642094d09b998a21e4ca0908edd5807550fda56236ccc02642aec3f5449f66d14fc27ca93e86d9b4c3b169f1ddefc59dcf0413ee7facabe2e9698020a56ced5

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\1779898c6b7dc7ec74e4b6274761f1187080d28fb8261d14b4d3aa8663766855.exe.log

Filesize
594B

MD5
fdb26b3b547022b45cfaeee57eafd566

SHA1
11c6798b8a59233f404014c5e79b3363cd564b37

SHA256
2707fc7f074413881b7bafca05079327b188db6005709951e7f69d39a2af97c0

SHA512
44d9bb8c0f0b341690d00eda86e15a50f7f29ce9595925c1a2a7e19ad26202d10049a7a97bea278ecb7d429ad555de8edceeffff664d4b06309a9410a09bb700

Download Submit
memory/2008-136-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2008-158-0x0000000074A00000-0x0000000074FB1000-memory.dmp

Filesize
5.7MB

Download
memory/2008-139-0x0000000074A00000-0x0000000074FB1000-memory.dmp

Filesize
5.7MB

Download
memory/2008-152-0x0000000074A00000-0x0000000074FB1000-memory.dmp

Filesize
5.7MB

Download
memory/2008-134-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2008-154-0x0000000007270000-0x0000000007287000-memory.dmp

Filesize
92KB

Download
memory/2008-155-0x0000000007270000-0x0000000007287000-memory.dmp

Filesize
92KB

Download
memory/2008-153-0x0000000007270000-0x0000000007287000-memory.dmp

Filesize
92KB

Download
memory/3108-151-0x0000000074A00000-0x0000000074FB1000-memory.dmp

Filesize
5.7MB

Download
memory/3108-156-0x0000000074A00000-0x0000000074FB1000-memory.dmp

Filesize
5.7MB

Download
memory/4892-132-0x0000000074A00000-0x0000000074FB1000-memory.dmp

Filesize
5.7MB

Download
memory/4892-138-0x0000000074A00000-0x0000000074FB1000-memory.dmp

Filesize
5.7MB

Download
memory/4940-150-0x0000000074A00000-0x0000000074FB1000-memory.dmp

Filesize
5.7MB

Download
memory/4940-143-0x0000000074A00000-0x0000000074FB1000-memory.dmp

Filesize
5.7MB

Download