ratty | 0cdaf2559dc07bc86ee642c3b30405dd65f4fe1254593e1b9591d5c80f179740

General

Target

fbyucqj.txt.jar
Size

332KB
MD5

557300cb69793fff9ce90e80d5800db7
SHA1

e4a9df52f70f2ce7eeb4e48f5cfd735836945b48
SHA256

0cdaf2559dc07bc86ee642c3b30405dd65f4fe1254593e1b9591d5c80f179740
SHA512

a484566b445f63dd5ec1a546e8ca2f45c54f4ebf800fb32c039261b3e4816634723b4cd28cc95392dfaddc4ed617e5562fa27b7038bc273a34fdd43aee388c78

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

resource	yara_rule
behavioral2/files/0x000300000001ab52-118.dat	family_ratty

Drops startup file 1 IoCs

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

Loads dropped DLL 1 IoCs

pid	Process
860	java.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run	REG.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\fbyucqj.txt.jar = "C:\\Users\\Admin\\AppData\\Roaming\\fbyucqj.txt.jar"	REG.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance	java.exe
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance	java.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
184	REG.exe

Suspicious use of SetWindowsHookEx 20 IoCs

pid	Process
860	java.exe
860	java.exe
860	java.exe
860	java.exe
860	java.exe
860	java.exe
860	java.exe
860	java.exe
860	java.exe
860	java.exe
860	java.exe
860	java.exe
860	java.exe
860	java.exe
860	java.exe
860	java.exe
860	java.exe
860	java.exe
860	java.exe
860	java.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 860 wrote to memory of 184	860	java.exe	76
PID 860 wrote to memory of 184	860	java.exe	76
PID 860 wrote to memory of 208	860	java.exe	78
PID 860 wrote to memory of 208	860	java.exe	78
PID 860 wrote to memory of 772	860	java.exe	80
PID 860 wrote to memory of 772	860	java.exe	80

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
208	attrib.exe
772	attrib.exe

C:\ProgramData\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\fbyucqj.txt.jar
1⤵
- Drops startup file
- Loads dropped DLL
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:860
- C:\Windows\SYSTEM32\REG.exe
  REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "fbyucqj.txt.jar" /d "C:\Users\Admin\AppData\Roaming\fbyucqj.txt.jar" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:184
- C:\Windows\SYSTEM32\attrib.exe
  attrib +H C:\Users\Admin\AppData\Roaming\fbyucqj.txt.jar
  2⤵
  - Views/modifies file attributes
  PID:208
- C:\Windows\SYSTEM32\attrib.exe
  attrib +H C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fbyucqj.txt.jar
  2⤵
  - Views/modifies file attributes
  PID:772

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/860-124-0x00000000025E0000-0x00000000025E1000-memory.dmp

Filesize
4KB

Download
memory/860-128-0x0000000002BF0000-0x0000000002C00000-memory.dmp

Filesize
64KB

Download
memory/860-119-0x00000000025E0000-0x00000000025E1000-memory.dmp

Filesize
4KB

Download
memory/860-122-0x00000000025E0000-0x00000000025E1000-memory.dmp

Filesize
4KB

Download
memory/860-123-0x00000000025E0000-0x00000000025E1000-memory.dmp

Filesize
4KB

Download
memory/860-114-0x0000000002980000-0x0000000002BF0000-memory.dmp

Filesize
2.4MB

Download
memory/860-125-0x00000000025E0000-0x00000000025E1000-memory.dmp

Filesize
4KB

Download
memory/860-120-0x00000000025E0000-0x00000000025E1000-memory.dmp

Filesize
4KB

Download
memory/860-129-0x0000000002C00000-0x0000000002C10000-memory.dmp

Filesize
64KB

Download
memory/860-130-0x00000000025E0000-0x00000000025E1000-memory.dmp

Filesize
4KB

Download
memory/860-131-0x00000000025E0000-0x00000000025E1000-memory.dmp

Filesize
4KB

Download
memory/860-132-0x00000000025E0000-0x00000000025E1000-memory.dmp

Filesize
4KB

Download
memory/860-136-0x00000000025E0000-0x00000000025E1000-memory.dmp

Filesize
4KB

Download
memory/860-140-0x00000000025E0000-0x00000000025E1000-memory.dmp

Filesize
4KB

Download
memory/860-142-0x0000000002C10000-0x0000000002C20000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads