Analysis

  • max time kernel
    39s
  • max time network
    49s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-04-2024 12:18

General

  • Target

    293bb44126b4c7b7a49822d7a10e873f57daba7c2e4c4a9116bc28659d03744f.jar

  • Size

    634KB

  • MD5

    d5a37c856d0e9668881e2b16bd467d16

  • SHA1

    ebda2eab3ac988d7819c75f6ab189d498c927c17

  • SHA256

    293bb44126b4c7b7a49822d7a10e873f57daba7c2e4c4a9116bc28659d03744f

  • SHA512

    520a9790d791683c26ef68fef5d98b0051ac902b76d93586feb5617bdfd84f239e35c0287d4d2da0ff28439166e6cc06b5d14abac88007919e6d655360036f63

  • SSDEEP

    12288:QdEThNA1mApKnMcL0mcjkJyiS5jUjClC/+jp5Uam2G+hJDW:Og7AsAEnMcL0DjksiSJmClCo3xGu1W

Malware Config

Signatures

  • Ratty

    Ratty is an open source Java Remote Access Tool.

  • Ratty Rat payload 1 IoCs
  • Drops startup file 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious use of SetWindowsHookEx 19 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
    java -jar C:\Users\Admin\AppData\Local\Temp\293bb44126b4c7b7a49822d7a10e873f57daba7c2e4c4a9116bc28659d03744f.jar
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2168
    • 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:1172
    • C:\Windows\SYSTEM32\REG.exe
      REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "293bb44126b4c7b7a49822d7a10e873f57daba7c2e4c4a9116bc28659d03744f.jar" /d "C:\Users\Admin\AppData\Roaming\293bb44126b4c7b7a49822d7a10e873f57daba7c2e4c4a9116bc28659d03744f.jar" /f
      2⤵
      • Adds Run key to start application
      • Modifies registry key
      PID:5060
    • C:\Windows\SYSTEM32\attrib.exe
      attrib +H C:\Users\Admin\AppData\Roaming\293bb44126b4c7b7a49822d7a10e873f57daba7c2e4c4a9116bc28659d03744f.jar
      2⤵
      • Views/modifies file attributes
      PID:1944
    • C:\Windows\SYSTEM32\attrib.exe
      attrib +H C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\293bb44126b4c7b7a49822d7a10e873f57daba7c2e4c4a9116bc28659d03744f.jar
      2⤵
      • Views/modifies file attributes
      PID:2592

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Modify Registry

2
T1112

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Replay Monitor

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Downloads

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

    46B

    MD5

    0955ff2fd8147527517a457a9f1b31ce

    SHA1

    2c49663b76fce580061fb4a343dacde744ad64ce

    SHA256

    d3abe04ea20551e0681592b20188e24a3be146978466220bed5d30198f338bdf

    SHA512

    f7aeafe0c93477ecde36835eaaaa3532495f1c45c8c2582d42448b931d343ec9c987c601b4f9e4128d9c27329c6429ef1a00061fbc344184b2fd61084457a42a

  • C:\Users\Admin\AppData\Local\Temp\JNativeHook-7432773EB4D09DC286D43FCC77DDB0E1E3BCE2B4.dll
    Filesize

    83KB

    MD5

    55f4de7f270663b3dc712b8c9eed422a

    SHA1

    7432773eb4d09dc286d43fcc77ddb0e1e3bce2b4

    SHA256

    47c2871dff8948de40424df497962ea6167c56bd4d487dd2e660aa2837485e25

    SHA512

    9da5efb0236b3bb4ec72d07bfd70a9e3f373df95d97c825513babd43d2b91c8669e28f3464173e789dad092ea48fc8d32a9d11a6d5c8d9beeabd33860ce6a996

  • C:\Users\Admin\AppData\Roaming\293bb44126b4c7b7a49822d7a10e873f57daba7c2e4c4a9116bc28659d03744f.jar
    Filesize

    634KB

    MD5

    d5a37c856d0e9668881e2b16bd467d16

    SHA1

    ebda2eab3ac988d7819c75f6ab189d498c927c17

    SHA256

    293bb44126b4c7b7a49822d7a10e873f57daba7c2e4c4a9116bc28659d03744f

    SHA512

    520a9790d791683c26ef68fef5d98b0051ac902b76d93586feb5617bdfd84f239e35c0287d4d2da0ff28439166e6cc06b5d14abac88007919e6d655360036f63

  • memory/2168-2-0x0000013E9E360000-0x0000013E9F360000-memory.dmp
    Filesize

    16.0MB

  • memory/2168-12-0x0000013E9CA80000-0x0000013E9CA81000-memory.dmp
    Filesize

    4KB

  • memory/2168-19-0x0000013E9CA80000-0x0000013E9CA81000-memory.dmp
    Filesize

    4KB

  • memory/2168-30-0x0000013E9CA80000-0x0000013E9CA81000-memory.dmp
    Filesize

    4KB

  • memory/2168-32-0x0000000065E40000-0x0000000065E55000-memory.dmp
    Filesize

    84KB

  • memory/2168-34-0x0000000065E40000-0x0000000065E55000-memory.dmp
    Filesize

    84KB