ratty | 35457ef70c460a876c61331b98913095482ebd5ca1fa08de5f50efefcce38c31

Analysis

max time kernel
147s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/02/2024, 16:51

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General

Target
W2-AND-1095-A_PDF.jar
Size 766KB
Sample240229-vdbyhafd96
SHA256 35457ef70c460a876c61331b98913095482ebd5ca1fa08de5f50efefcce38c31
MD5 7e3adb5fe223d34464fd3da3cc2aebc9
SHA1 fd6123aa0e064e9a71873ac2d6ff05555dd44532
SHA512 233325833e309eaacc9af1b3ebe82de3b1141e9ec16b2ebf027a5f961f0f000181acc7615f0c9fb2b800f814a9c68462e61803f01cfd2f27f3e0781f4f8d60ae
SSDEEP 12288:PClCt+jpc2GXdhJ/af5jUPJLsZ8A3K6aZZI6rlGE6uFehPfDmNCzD6tRMaSjX33c:PClCC1GjEfJgJAHsZZt0ENMhPb8iD6t9
MD5 SHA1 SHA512 SSDEEP

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

resource	yara_rule
behavioral2/files/0x0009000000023201-15.dat	family_ratty

Drops startup file 1 IoCs

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

pid	Process
4304	java.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

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

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

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

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

pid	Process
2308	REG.exe

Suspicious use of SetWindowsHookEx 4 IoCs

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

Suspicious use of WriteProcessMemory 8 IoCs

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

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

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

3903daac9bc4a3b7.timestamp

Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
Size 46B
SHA256 e56eca77dbc21124710849d9a162c93bc283ca21af4e6dd04ab729fe959d1e42
MD5 e2490496cda629e4ac9aedf45203d950
SHA1 29148001295257d75b1939007253e198ddb12a9b
SHA512 122b0ab35d12cc9583e90b4bad4276c78d196ff3d6b67a7e6132989c8539a5614105921ee7e5d815efc5721bb648e9a5cf53da10260941fcb74dfaf9bf2b4ace
MD5 SHA1 SHA512

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JNativeHook-7432773EB4D09DC286D43FCC77DDB0E1E3BCE2B4.dll

Path C:\Users\Admin\AppData\Local\Temp\JNativeHook-7432773EB4D09DC286D43FCC77DDB0E1E3BCE2B4.dll
Size 83KB
SHA256 47c2871dff8948de40424df497962ea6167c56bd4d487dd2e660aa2837485e25
MD5 55f4de7f270663b3dc712b8c9eed422a
SHA1 7432773eb4d09dc286d43fcc77ddb0e1e3bce2b4
SHA512 9da5efb0236b3bb4ec72d07bfd70a9e3f373df95d97c825513babd43d2b91c8669e28f3464173e789dad092ea48fc8d32a9d11a6d5c8d9beeabd33860ce6a996
SSDEEP 768:mp84E8R0D3YdcGIJb2nQqnJG7PlIcQOqrYiqCxMTMF7F16x7j/7V:yrmDWlIhcIIctqrY+xVR1+j/7V
MD5 SHA1 SHA512 SSDEEP

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W2-AND-1095-A_PDF.jar

Path C:\Users\Admin\AppData\Roaming\W2-AND-1095-A_PDF.jar
Size 766KB
SHA256 35457ef70c460a876c61331b98913095482ebd5ca1fa08de5f50efefcce38c31
MD5 7e3adb5fe223d34464fd3da3cc2aebc9
SHA1 fd6123aa0e064e9a71873ac2d6ff05555dd44532
SHA512 233325833e309eaacc9af1b3ebe82de3b1141e9ec16b2ebf027a5f961f0f000181acc7615f0c9fb2b800f814a9c68462e61803f01cfd2f27f3e0781f4f8d60ae
SSDEEP 12288:PClCt+jpc2GXdhJ/af5jUPJLsZ8A3K6aZZI6rlGE6uFehPfDmNCzD6tRMaSjX33c:PClCC1GjEfJgJAHsZZt0ENMhPb8iD6t9
MD5 SHA1 SHA512 SSDEEP

Submit Download

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

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

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

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

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

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

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

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

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

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

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

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

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

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads