luminosity | 42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90

General

Target

42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe
Size

594KB
MD5

ee5efbffb2b92cd6414f070bdbe9525e
SHA1

8c5ede4793a16898d44b47314a68bd5b70e2177c
SHA256

42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90
SHA512

78eeeebd2bd362d65e908595b1c91415e74fbd0087e566f760f038d79c50050d95961fd0da6f5b75aa92468ac64af29b6f53127fe9d10863cfc3556bf0ddce8c
SSDEEP

12288:85OiajewcaC3K/al98M2BN3mA/+QnQmuF4PsWhQzRwlpWfuMq7YsyHScppW4Lk2z:85Oiajewc53K/al98M2BN3V/+QnQmuFj

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

Processes:

helper.exe

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\\918820\\helper.exe\""	helper.exe

Executes dropped EXE 2 IoCs

Processes:

helper.exehelper.exe

pid process

4364 helper.exe
3132 helper.exe

pid	process
4364	helper.exe
3132	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

Processes:

42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

helper.exe

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\\918820\\helper.exe\""	helper.exe

Drops file in System32 directory 2 IoCs

Processes:

helper.exe

description ioc process

File created C:\Windows\SysWOW64\clientsvr.exe helper.exe
File opened for modification C:\Windows\SysWOW64\clientsvr.exe helper.exe

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

Processes:

42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exehelper.exe

description	pid	process	target process
PID 4244 set thread context of 4776	4244	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe
PID 4364 set thread context of 3132	4364	helper.exe	helper.exe

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

Processes:

helper.exe

pid	process
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe
3132	helper.exe

Suspicious behavior: RenamesItself 1 IoCs

Processes:

42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe

pid process

4776 42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

helper.exe

description pid process

Token: SeDebugPrivilege 3132 helper.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

helper.exe

pid process

3132 helper.exe

pid	process
4776	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe

description	pid	process
Token: SeDebugPrivilege	3132	helper.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exehelper.exe

description	pid	process	target process
PID 4244 wrote to memory of 4776	4244	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe
PID 4244 wrote to memory of 4776	4244	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe
PID 4244 wrote to memory of 4776	4244	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe
PID 4244 wrote to memory of 4776	4244	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe
PID 4244 wrote to memory of 4776	4244	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe
PID 4244 wrote to memory of 4776	4244	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe
PID 4244 wrote to memory of 4776	4244	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe
PID 4244 wrote to memory of 4776	4244	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe
PID 4776 wrote to memory of 4364	4776	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe	helper.exe
PID 4776 wrote to memory of 4364	4776	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe	helper.exe
PID 4776 wrote to memory of 4364	4776	42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe	helper.exe
PID 4364 wrote to memory of 3132	4364	helper.exe	helper.exe
PID 4364 wrote to memory of 3132	4364	helper.exe	helper.exe
PID 4364 wrote to memory of 3132	4364	helper.exe	helper.exe
PID 4364 wrote to memory of 3132	4364	helper.exe	helper.exe
PID 4364 wrote to memory of 3132	4364	helper.exe	helper.exe
PID 4364 wrote to memory of 3132	4364	helper.exe	helper.exe
PID 4364 wrote to memory of 3132	4364	helper.exe	helper.exe
PID 4364 wrote to memory of 3132	4364	helper.exe	helper.exe

C:\Users\Admin\AppData\Local\Temp\42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe
"C:\Users\Admin\AppData\Local\Temp\42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4244
- C:\Users\Admin\AppData\Local\Temp\42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe
  "C:\Users\Admin\AppData\Local\Temp\42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:4776
- - C:\ProgramData\918820\helper.exe
    "C:\ProgramData\918820\helper.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4364
  - - C:\ProgramData\918820\helper.exe
      "C:\ProgramData\918820\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:3132

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\918820\helper.exe

Filesize
594KB

MD5
ee5efbffb2b92cd6414f070bdbe9525e

SHA1
8c5ede4793a16898d44b47314a68bd5b70e2177c

SHA256
42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90

SHA512
78eeeebd2bd362d65e908595b1c91415e74fbd0087e566f760f038d79c50050d95961fd0da6f5b75aa92468ac64af29b6f53127fe9d10863cfc3556bf0ddce8c

Download Submit
C:\ProgramData\918820\helper.exe

Filesize
594KB

MD5
ee5efbffb2b92cd6414f070bdbe9525e

SHA1
8c5ede4793a16898d44b47314a68bd5b70e2177c

SHA256
42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90

SHA512
78eeeebd2bd362d65e908595b1c91415e74fbd0087e566f760f038d79c50050d95961fd0da6f5b75aa92468ac64af29b6f53127fe9d10863cfc3556bf0ddce8c

Download Submit
C:\ProgramData\918820\helper.exe

Filesize
594KB

MD5
ee5efbffb2b92cd6414f070bdbe9525e

SHA1
8c5ede4793a16898d44b47314a68bd5b70e2177c

SHA256
42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90

SHA512
78eeeebd2bd362d65e908595b1c91415e74fbd0087e566f760f038d79c50050d95961fd0da6f5b75aa92468ac64af29b6f53127fe9d10863cfc3556bf0ddce8c

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\42c07f1fb6d60e2b206b7085e61b337f1c41bb41608801419fd91ce8b4fb8d90.exe.log

Filesize
312B

MD5
6dba4702b346903da02f7dd9e839a128

SHA1
d69f255866f30a87c9eca8312d425c47059bf15e

SHA256
29d145faac0201870c39b9119894f78694a776e03fc8f79349bdf92e56a65bcd

SHA512
33afef187e806838717238881aaaf41272f8b484fcfe97a85057fd43a7eeb119df813d6023d2ee770aa22a067f7e9d532dd1c30b512f9c48b76f838615863e1d

Download Submit
memory/3132-153-0x00000000751A0000-0x0000000075751000-memory.dmp

Filesize
5.7MB

Download
memory/3132-152-0x00000000751A0000-0x0000000075751000-memory.dmp

Filesize
5.7MB

Download
memory/3132-145-0x0000000000000000-mapping.dmp

Download
memory/4244-132-0x00000000751A0000-0x0000000075751000-memory.dmp

Filesize
5.7MB

Download
memory/4244-138-0x00000000751A0000-0x0000000075751000-memory.dmp

Filesize
5.7MB

Download
memory/4364-141-0x0000000000000000-mapping.dmp

Download
memory/4364-151-0x00000000751A0000-0x0000000075751000-memory.dmp

Filesize
5.7MB

Download
memory/4364-144-0x00000000751A0000-0x0000000075751000-memory.dmp

Filesize
5.7MB

Download
memory/4776-140-0x00000000751A0000-0x0000000075751000-memory.dmp

Filesize
5.7MB

Download
memory/4776-133-0x0000000000000000-mapping.dmp

Download
memory/4776-134-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4776-136-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4776-139-0x00000000751A0000-0x0000000075751000-memory.dmp

Filesize
5.7MB

Download
memory/4776-155-0x00000000751A0000-0x0000000075751000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads