Analysis

  • max time kernel
    115s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-08-2024 23:32

General

  • Target

    b041bb8145f8237186aeee76a6bc8fc0N.exe

  • Size

    115KB

  • MD5

    b041bb8145f8237186aeee76a6bc8fc0

  • SHA1

    b1e230ade2a9f0fc4be95a544b42e6a6e16c5814

  • SHA256

    42d82cbdcca10ece04b362230375a514cee3bd67235be102ccce95eef2be4d1c

  • SHA512

    16009c2fd22508b46caedd7a98282304c1fed084556e8fd18869b48edf38f589546d5d5a5a7faeaba57a31111730b7d3ea9d7651aabfbc547e18e7f830fcc8d4

  • SSDEEP

    1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMCh:P5eznsjsguGDFqGZ2rCh

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

neuf

C2

doddyfire.linkpc.net:10000

Mutex

e1a87040f2026369a233f9ae76301b7b

Attributes
  • reg_key

    e1a87040f2026369a233f9ae76301b7b

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 4 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of AdjustPrivilegeToken 25 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b041bb8145f8237186aeee76a6bc8fc0N.exe
    "C:\Users\Admin\AppData\Local\Temp\b041bb8145f8237186aeee76a6bc8fc0N.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4660
    • C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
      "C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4808
      • C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
        C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
        3⤵
        • Executes dropped EXE
        PID:892
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 892 -s 84
          4⤵
          • Program crash
          PID:4036
      • C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
        C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
        3⤵
        • Executes dropped EXE
        PID:4004
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4004 -s 80
          4⤵
          • Program crash
          PID:2848
      • C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
        C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1008
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe" "chargeable.exe" ENABLE
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          PID:1744
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 892 -ip 892
    1⤵
      PID:4656
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4004 -ip 4004
      1⤵
        PID:3536

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\chargeable.exe.log

        Filesize

        400B

        MD5

        0a9b4592cd49c3c21f6767c2dabda92f

        SHA1

        f534297527ae5ccc0ecb2221ddeb8e58daeb8b74

        SHA256

        c7effe9cb81a70d738dee863991afefab040290d4c4b78b4202383bcb9f88fcd

        SHA512

        6b878df474e5bbfb8e9e265f15a76560c2ef151dcebc6388c82d7f6f86ffaf83f5ade5a09f1842e493cb6c8fd63b0b88d088c728fd725f7139f965a5ee332307

      • C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe

        Filesize

        115KB

        MD5

        56d13d453d3fde192608b9ba80457e62

        SHA1

        1113f12482f1666df4d483a9304a09f29255ec20

        SHA256

        09547f291aea3de5282cfafb271299830c8ab2bda7f26c05a86ae1452058a96f

        SHA512

        32379219fce0aae4bc34e136cab90936f0ae5eb4053528cf7d4c916124455e15f8ddf8824b9a1f214d6e439f48b2e0f8eec556b791c64321e4fa546c7bec52b8

      • memory/1008-32-0x0000000075200000-0x00000000757B1000-memory.dmp

        Filesize

        5.7MB

      • memory/1008-33-0x0000000075200000-0x00000000757B1000-memory.dmp

        Filesize

        5.7MB

      • memory/1008-29-0x0000000075200000-0x00000000757B1000-memory.dmp

        Filesize

        5.7MB

      • memory/1008-21-0x0000000000400000-0x000000000040C000-memory.dmp

        Filesize

        48KB

      • memory/1008-30-0x0000000075200000-0x00000000757B1000-memory.dmp

        Filesize

        5.7MB

      • memory/4660-0-0x0000000075202000-0x0000000075203000-memory.dmp

        Filesize

        4KB

      • memory/4660-2-0x0000000075200000-0x00000000757B1000-memory.dmp

        Filesize

        5.7MB

      • memory/4660-17-0x0000000075200000-0x00000000757B1000-memory.dmp

        Filesize

        5.7MB

      • memory/4660-1-0x0000000075200000-0x00000000757B1000-memory.dmp

        Filesize

        5.7MB

      • memory/4808-18-0x0000000075200000-0x00000000757B1000-memory.dmp

        Filesize

        5.7MB

      • memory/4808-31-0x0000000075200000-0x00000000757B1000-memory.dmp

        Filesize

        5.7MB

      • memory/4808-20-0x0000000075200000-0x00000000757B1000-memory.dmp

        Filesize

        5.7MB

      • memory/4808-19-0x0000000075200000-0x00000000757B1000-memory.dmp

        Filesize

        5.7MB