ratty | 4ed2ca0a64bc9f7c114d1a91ae0f0e946a5e32d30fca791123bbf3043befec4e

Analysis

max time kernel
126s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
09-01-2023 17:40

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General

Target

TtLKCmS8n3wRTRqRrg8OlGpeMtMPynkRI7vzBDvv7E4.jar
Size

764KB
MD5

de926a705c02c29aec3a34162c76fa0b
SHA1

ce830780086bf326e2d62a7d59d37349f32f0ba3
SHA256

4ed2ca0a64bc9f7c114d1a91ae0f0e946a5e32d30fca791123bbf3043befec4e
SHA512

02a776c4040e72def12c5c1b588153693a89ccf583ebf4bcde628222967aaa0aa101e70ec5db679f5ee27d010cabfc2d040f64800f4047502cd51f9528ceaa2e
SSDEEP

12288:vClCR+jp42GLRhJ7ar5jU75XGC+g73MJ9GaXvf/g9QLK/OFRu+P5084ZpEPPTLiF:vClCeBGLorJQhN+W8JFXvf49QLCO6+No

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
behavioral2/files/0x0004000000022da0-145.dat	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\TtLKCmS8n3wRTRqRrg8OlGpeMtMPynkRI7vzBDvv7E4.jar	java.exe

Loads dropped DLL 1 IoCs

Processes:

java.exe

pid	Process
3548	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
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\TtLKCmS8n3wRTRqRrg8OlGpeMtMPynkRI7vzBDvv7E4.jar = "C:\\Users\\Admin\\AppData\\Roaming\\TtLKCmS8n3wRTRqRrg8OlGpeMtMPynkRI7vzBDvv7E4.jar"	REG.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run	REG.exe

Modifies registry class 2 IoCs

Processes:

java.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	java.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	java.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

Processes:

REG.exe

pid	Process
2868	REG.exe

Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

java.exe

pid	Process
3548	java.exe
3548	java.exe
3548	java.exe
3548	java.exe
3548	java.exe
3548	java.exe
3548	java.exe
3548	java.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

java.exe

description	pid	Process	procid_target
PID 3548 wrote to memory of 2868	3548	java.exe	81
PID 3548 wrote to memory of 2868	3548	java.exe	81
PID 3548 wrote to memory of 1576	3548	java.exe	83
PID 3548 wrote to memory of 1576	3548	java.exe	83
PID 3548 wrote to memory of 3668	3548	java.exe	86
PID 3548 wrote to memory of 3668	3548	java.exe	86

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

Processes:

attrib.exeattrib.exe

pid	Process
1576	attrib.exe
3668	attrib.exe

C:\ProgramData\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\TtLKCmS8n3wRTRqRrg8OlGpeMtMPynkRI7vzBDvv7E4.jar
1⤵
- Drops startup file
- Loads dropped DLL
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3548
- C:\Windows\SYSTEM32\REG.exe
  REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "TtLKCmS8n3wRTRqRrg8OlGpeMtMPynkRI7vzBDvv7E4.jar" /d "C:\Users\Admin\AppData\Roaming\TtLKCmS8n3wRTRqRrg8OlGpeMtMPynkRI7vzBDvv7E4.jar" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:2868
- C:\Windows\SYSTEM32\attrib.exe
  attrib +H C:\Users\Admin\AppData\Roaming\TtLKCmS8n3wRTRqRrg8OlGpeMtMPynkRI7vzBDvv7E4.jar
  2⤵
  - Views/modifies file attributes
  PID:1576
- C:\Windows\SYSTEM32\attrib.exe
  attrib +H C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TtLKCmS8n3wRTRqRrg8OlGpeMtMPynkRI7vzBDvv7E4.jar
  2⤵
  - Views/modifies file attributes
  PID:3668

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\Local\Temp\JNativeHook-7432773EB4D09DC286D43FCC77DDB0E1E3BCE2B4.dll

Filesize
83KB

MD5
55f4de7f270663b3dc712b8c9eed422a

SHA1
7432773eb4d09dc286d43fcc77ddb0e1e3bce2b4

SHA256
47c2871dff8948de40424df497962ea6167c56bd4d487dd2e660aa2837485e25

SHA512
9da5efb0236b3bb4ec72d07bfd70a9e3f373df95d97c825513babd43d2b91c8669e28f3464173e789dad092ea48fc8d32a9d11a6d5c8d9beeabd33860ce6a996

Download Submit
C:\Users\Admin\AppData\Roaming\TtLKCmS8n3wRTRqRrg8OlGpeMtMPynkRI7vzBDvv7E4.jar

Filesize
764KB

MD5
de926a705c02c29aec3a34162c76fa0b

SHA1
ce830780086bf326e2d62a7d59d37349f32f0ba3

SHA256
4ed2ca0a64bc9f7c114d1a91ae0f0e946a5e32d30fca791123bbf3043befec4e

SHA512
02a776c4040e72def12c5c1b588153693a89ccf583ebf4bcde628222967aaa0aa101e70ec5db679f5ee27d010cabfc2d040f64800f4047502cd51f9528ceaa2e

Download Submit
memory/1576-143-0x0000000000000000-mapping.dmp

Download
memory/2868-142-0x0000000000000000-mapping.dmp

Download
memory/3548-136-0x0000000002E10000-0x0000000003E10000-memory.dmp

Filesize
16.0MB

Download
memory/3548-151-0x0000000002E10000-0x0000000003E10000-memory.dmp

Filesize
16.0MB

Download
memory/3548-152-0x0000000002E10000-0x0000000003E10000-memory.dmp

Filesize
16.0MB

Download
memory/3548-153-0x0000000002E10000-0x0000000003E10000-memory.dmp

Filesize
16.0MB

Download
memory/3548-154-0x0000000002E10000-0x0000000003E10000-memory.dmp

Filesize
16.0MB

Download
memory/3668-144-0x0000000000000000-mapping.dmp

Download