Analysis

  • max time kernel
    149s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    03/02/2024, 04:30

General

  • Target

    8b66ccb77f02e2ff88e9934fe4ab648d.exe

  • Size

    402KB

  • MD5

    8b66ccb77f02e2ff88e9934fe4ab648d

  • SHA1

    3306d54395ab3b21d424fb73308a6ad37b9020bb

  • SHA256

    f47e6c4f9dbd723b2dd9db492822967c6257f2f502b57f342908ecaa64dfe4ba

  • SHA512

    425e9b883005f0b3e6513d7ea33aea06df9de6c4a64d88a9ba32f56013aa5f93fbc77f965d0e434c461107b71b27506a6e9aa750e207ce4ea70bdb6e37a626ca

  • SSDEEP

    6144:1maKVBGmE84IMNv55giU0pKiFYHxfx15RvOagakZBxkTN2gmeGcFnVQb/DAYbDgU:ySmLAuEY71fviagATFmebVQDcYcg

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

pdf

C2

hhhmach.ddns.net:1177

Mutex

5cd8f17f4086744065eb0992a09e05a2

Attributes
  • reg_key

    5cd8f17f4086744065eb0992a09e05a2

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 33 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8b66ccb77f02e2ff88e9934fe4ab648d.exe
    "C:\Users\Admin\AppData\Local\Temp\8b66ccb77f02e2ff88e9934fe4ab648d.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2164
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c test.exe
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1644
      • C:\Users\Admin\AppData\Local\Temp\test.exe
        test.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2072
  • C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Trojan.exe" "Trojan.exe" ENABLE
    1⤵
    • Modifies Windows Firewall
    PID:2704
  • C:\Users\Admin\AppData\Local\Temp\Trojan.exe
    "C:\Users\Admin\AppData\Local\Temp\Trojan.exe"
    1⤵
    • Drops startup file
    • Executes dropped EXE
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2744

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\test.exe

          Filesize

          78KB

          MD5

          42c5854aa0709d8bf6c28ea82c67b9a5

          SHA1

          124ea473f0572009de85a4a46f361109f4fae7d6

          SHA256

          71e1add662041fee9ff0ddf0139154cf006538559af45f34047aac91efb1b8eb

          SHA512

          c0f4412f2237138b5b66ecc285d7f44bacd67ae23feb0a55561cd4f7850ee6b0fd1b1dac3d2725ed4932aaf155b0fbda284a69b07594789bdb4cbcf0f499d95a

        • \Users\Admin\AppData\Local\Temp\test.exe

          Filesize

          62KB

          MD5

          cb2cc09bf69207261307998c06a4191b

          SHA1

          5a0db53afecd9b99e6e232f6cb749e57bb27d175

          SHA256

          cfe978e522a816f7b7801f6d251421aa88279041a7132ce00b858f2a2c6e9bc8

          SHA512

          7b714ed57d00fc4a7bce34cbeeda2f1c410393724a2a25a808035a80ad82cb4c85d9d732b90b74cbf9307648c55e5da38f4c2da9c5bc278539731a07871ffefd

        • memory/2072-5-0x0000000074230000-0x00000000747DB000-memory.dmp

          Filesize

          5.7MB

        • memory/2072-7-0x0000000000210000-0x0000000000250000-memory.dmp

          Filesize

          256KB

        • memory/2072-6-0x0000000074230000-0x00000000747DB000-memory.dmp

          Filesize

          5.7MB

        • memory/2072-16-0x0000000074230000-0x00000000747DB000-memory.dmp

          Filesize

          5.7MB

        • memory/2164-19-0x0000000000400000-0x00000000004FB000-memory.dmp

          Filesize

          1004KB

        • memory/2164-0-0x0000000000400000-0x00000000004FB000-memory.dmp

          Filesize

          1004KB

        • memory/2744-15-0x0000000074230000-0x00000000747DB000-memory.dmp

          Filesize

          5.7MB

        • memory/2744-18-0x0000000000C50000-0x0000000000C90000-memory.dmp

          Filesize

          256KB

        • memory/2744-17-0x0000000074230000-0x00000000747DB000-memory.dmp

          Filesize

          5.7MB

        • memory/2744-21-0x0000000074230000-0x00000000747DB000-memory.dmp

          Filesize

          5.7MB