ratty | 35457ef70c460a876c61331b98913095482ebd5ca1fa08de5f50efefcce38c31

General

Target

W2-AND-1095-A_PDF.jar
Size

766KB
MD5

7e3adb5fe223d34464fd3da3cc2aebc9
SHA1

fd6123aa0e064e9a71873ac2d6ff05555dd44532
SHA256

35457ef70c460a876c61331b98913095482ebd5ca1fa08de5f50efefcce38c31
SHA512

233325833e309eaacc9af1b3ebe82de3b1141e9ec16b2ebf027a5f961f0f000181acc7615f0c9fb2b800f814a9c68462e61803f01cfd2f27f3e0781f4f8d60ae
SSDEEP

12288:PClCt+jpc2GXdhJ/af5jUPJLsZ8A3K6aZZI6rlGE6uFehPfDmNCzD6tRMaSjX33c:PClCC1GjEfJgJAHsZZt0ENMhPb8iD6t9

Score

10^/10

ratty discovery 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/0x0009000000023201-15.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\W2-AND-1095-A_PDF.jar	java.exe

Loads dropped DLL 1 IoCs

Processes:

java.exe

pid	Process
4304	java.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

Processes:

icacls.exe

pid	Process
3540	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

REG.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\W2-AND-1095-A_PDF.jar = "C:\\Users\\Admin\\AppData\\Roaming\\W2-AND-1095-A_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\jre-1.8\bin\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\symbols\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\symbols\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\ntdll.pdb	java.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-1-5-21-3045580317-3728985860-206385570-1000_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
2308	REG.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

java.exe

pid	Process
4304	java.exe
4304	java.exe
4304	java.exe
4304	java.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

java.exe

description	pid	Process	procid_target
PID 4304 wrote to memory of 3540	4304	java.exe	88
PID 4304 wrote to memory of 3540	4304	java.exe	88
PID 4304 wrote to memory of 2308	4304	java.exe	90
PID 4304 wrote to memory of 2308	4304	java.exe	90
PID 4304 wrote to memory of 216	4304	java.exe	91
PID 4304 wrote to memory of 216	4304	java.exe	91
PID 4304 wrote to memory of 3588	4304	java.exe	92
PID 4304 wrote to memory of 3588	4304	java.exe	92

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exeattrib.exe

pid	Process
216	attrib.exe
3588	attrib.exe

C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\W2-AND-1095-A_PDF.jar
1⤵
- Drops startup file
- Loads dropped DLL
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4304
- C:\Windows\system32\icacls.exe
  C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
  2⤵
  - Modifies file permissions
  PID:3540
- C:\Windows\SYSTEM32\REG.exe
  REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "W2-AND-1095-A_PDF.jar" /d "C:\Users\Admin\AppData\Roaming\W2-AND-1095-A_PDF.jar" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:2308
- C:\Windows\SYSTEM32\attrib.exe
  attrib +H C:\Users\Admin\AppData\Roaming\W2-AND-1095-A_PDF.jar
  2⤵
  - Views/modifies file attributes
  PID:216
- C:\Windows\SYSTEM32\attrib.exe
  attrib +H C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\W2-AND-1095-A_PDF.jar
  2⤵
  - Views/modifies file attributes
  PID:3588

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

1

T1222

Hide Artifacts

1

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp

Filesize
46B

MD5
e2490496cda629e4ac9aedf45203d950

SHA1
29148001295257d75b1939007253e198ddb12a9b

SHA256
e56eca77dbc21124710849d9a162c93bc283ca21af4e6dd04ab729fe959d1e42

SHA512
122b0ab35d12cc9583e90b4bad4276c78d196ff3d6b67a7e6132989c8539a5614105921ee7e5d815efc5721bb648e9a5cf53da10260941fcb74dfaf9bf2b4ace

Download Submit
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\W2-AND-1095-A_PDF.jar

Filesize
766KB

MD5
7e3adb5fe223d34464fd3da3cc2aebc9

SHA1
fd6123aa0e064e9a71873ac2d6ff05555dd44532

SHA256
35457ef70c460a876c61331b98913095482ebd5ca1fa08de5f50efefcce38c31

SHA512
233325833e309eaacc9af1b3ebe82de3b1141e9ec16b2ebf027a5f961f0f000181acc7615f0c9fb2b800f814a9c68462e61803f01cfd2f27f3e0781f4f8d60ae

Download Submit
memory/4304-38-0x000001F574740000-0x000001F574741000-memory.dmp

Filesize
4KB

Download
memory/4304-19-0x000001F574740000-0x000001F574741000-memory.dmp

Filesize
4KB

Download
memory/4304-14-0x000001F574740000-0x000001F574741000-memory.dmp

Filesize
4KB

Download
memory/4304-30-0x000001F574740000-0x000001F574741000-memory.dmp

Filesize
4KB

Download
memory/4304-34-0x000001F500000000-0x000001F501000000-memory.dmp

Filesize
16.0MB

Download
memory/4304-4-0x000001F500000000-0x000001F501000000-memory.dmp

Filesize
16.0MB

Download
memory/4304-41-0x000001F574740000-0x000001F574741000-memory.dmp

Filesize
4KB

Download
memory/4304-47-0x0000000065E40000-0x0000000065E55000-memory.dmp

Filesize
84KB

Download
memory/4304-50-0x000001F500000000-0x000001F501000000-memory.dmp

Filesize
16.0MB

Download
memory/4304-49-0x0000000065E40000-0x0000000065E55000-memory.dmp

Filesize
84KB

Download
memory/4304-52-0x000001F5002A0000-0x000001F5002B0000-memory.dmp

Filesize
64KB

Download
memory/4304-51-0x000001F500280000-0x000001F500290000-memory.dmp

Filesize
64KB

Download
memory/4304-53-0x000001F500000000-0x000001F501000000-memory.dmp

Filesize
16.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads