ratty | 9cfb7f1ac2aae8873090698044078fb8eee024f8ea0b7ea84fb402177a57db18

Analysis

max time kernel
126s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
18-11-2022 18:25

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General

Target

PTIN_Reports_PDF.jar
Size

1.6MB
MD5

e66e3afd7ffe6e9e0ae094c13bb33bd0
SHA1

8480f4693aa2c092246932fe113dae6fa6b41c5c
SHA256

4dbea6f56aff63990206432af8777f6e5ef57173d65770ef9ca254cafcc99fab
SHA512

5913d4792ff5dba9f5d48e7be8c66645f7336ec297668b93a4726f6c03f366cf80de078a1778c789120b70320555c51fea90d84065003acfecfbcd5ad437f865
SSDEEP

49152:3uLWnjLiGxQBO1qCXDhr8M9yrEjKfsiUn8ya:eyjLiGxK6n9N9iUn8V

Score

10^/10

ratty persistence rat trojan

Malware Config

Signatures

Ratty
Ratty is an open source Java Remote Access Tool.
trojan rat ratty

Ratty Rat payload 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\PTIN_Reports_PDF.jar	family_ratty

Drops startup file 1 IoCs

Processes:

java.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PTIN_Reports_PDF.jar java.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PTIN_Reports_PDF.jar	java.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

REG.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows\CurrentVersion\Run	REG.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\PTIN_Reports_PDF.jar = "C:\\Users\\Admin\\AppData\\Roaming\\PTIN_Reports_PDF.jar"	REG.exe

Drops file in Program Files directory 12 IoCs

Processes:

java.exe

description	ioc	process
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\symbols\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\symbols\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\dll\ntdll.pdb	java.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1308 REG.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

java.exe

pid process

1604 java.exe

pid	process
1308	REG.exe

pid	process
1604	java.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

java.exe

description	pid	process	target process
PID 1604 wrote to memory of 1308	1604	java.exe	REG.exe
PID 1604 wrote to memory of 1308	1604	java.exe	REG.exe
PID 1604 wrote to memory of 2584	1604	java.exe	attrib.exe
PID 1604 wrote to memory of 2584	1604	java.exe	attrib.exe
PID 1604 wrote to memory of 4544	1604	java.exe	attrib.exe
PID 1604 wrote to memory of 4544	1604	java.exe	attrib.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

2584 attrib.exe
4544 attrib.exe

pid	process
2584	attrib.exe
4544	attrib.exe

C:\ProgramData\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\PTIN_Reports_PDF.jar
1⤵
- Drops startup file
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1604
- C:\Windows\SYSTEM32\REG.exe
  REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "PTIN_Reports_PDF.jar" /d "C:\Users\Admin\AppData\Roaming\PTIN_Reports_PDF.jar" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:1308
- C:\Windows\SYSTEM32\attrib.exe
  attrib +H C:\Users\Admin\AppData\Roaming\PTIN_Reports_PDF.jar
  2⤵
  - Views/modifies file attributes
  PID:2584
- C:\Windows\SYSTEM32\attrib.exe
  attrib +H C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PTIN_Reports_PDF.jar
  2⤵
  - Views/modifies file attributes
  PID:4544

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\PTIN_Reports_PDF.jar

Filesize
1.6MB

MD5
e66e3afd7ffe6e9e0ae094c13bb33bd0

SHA1
8480f4693aa2c092246932fe113dae6fa6b41c5c

SHA256
4dbea6f56aff63990206432af8777f6e5ef57173d65770ef9ca254cafcc99fab

SHA512
5913d4792ff5dba9f5d48e7be8c66645f7336ec297668b93a4726f6c03f366cf80de078a1778c789120b70320555c51fea90d84065003acfecfbcd5ad437f865

Download Submit
memory/1308-153-0x0000000000000000-mapping.dmp

Download
memory/1604-139-0x00000000025B0000-0x00000000035B0000-memory.dmp

Filesize
16.0MB

Download
memory/1604-158-0x00000000025B0000-0x00000000035B0000-memory.dmp

Filesize
16.0MB

Download
memory/1604-162-0x00000000025B0000-0x00000000035B0000-memory.dmp

Filesize
16.0MB

Download
memory/1604-164-0x00000000025B0000-0x00000000035B0000-memory.dmp

Filesize
16.0MB

Download
memory/1604-165-0x00000000025B0000-0x00000000035B0000-memory.dmp

Filesize
16.0MB

Download
memory/2584-154-0x0000000000000000-mapping.dmp

Download
memory/4544-155-0x0000000000000000-mapping.dmp

Download