Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    26/11/2024, 14:07 UTC

General

  • Target

    ft.server.exe

  • Size

    37KB

  • MD5

    e481569ecba8befd9971a1644b1a6f0d

  • SHA1

    e22e7b39866702efd0772fa96511ff871ad50781

  • SHA256

    1275aa3de74112f8fd4aa2bd856fccb732cf337edadc3e92a7e11b732775f53e

  • SHA512

    6ca77b99afebca543006c3e7dab63a24059a4d5cc18cd6fd8d2fe1a9c864823a3789a90ce4e94d2d67523bbd9a006ab487b62f44a8bf3bd5d985a5a0744d4191

  • SSDEEP

    384:yINyQilEhHeTnMGiyMTp4vrijPMIvrAF+rMRTyN/0L+EcoinblneHQM3epzX/Nrj:1NHSMGxMTp4ubM+rM+rMRa8Nudrt

Malware Config

Extracted

Family

njrat

Version

im523

C2

7.tcp.eu.ngrok.io:12891

Mutex

04bb0b110981cae57c5751025fdf1d83

Attributes
  • reg_key

    04bb0b110981cae57c5751025fdf1d83

  • splitter

    |'|'|

Signatures

  • Njrat family
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
  • Drops autorun.inf file 1 TTPs 5 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in Windows directory 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.

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ft.server.exe
    "C:\Users\Admin\AppData\Local\Temp\ft.server.exe"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2328
    • C:\Windows\ft.exe
      "C:\Windows\ft.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops autorun.inf file
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1864
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Windows\ft.exe" "ft.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:2768

Network

  • flag-us
    DNS
    7.tcp.eu.ngrok.io
    ft.exe
    Remote address:
    8.8.8.8:53
    Request
    7.tcp.eu.ngrok.io
    IN A
    Response
    7.tcp.eu.ngrok.io
    IN A
    35.157.111.131
  • flag-us
    DNS
    7.tcp.eu.ngrok.io
    ft.exe
    Remote address:
    8.8.8.8:53
    Request
    7.tcp.eu.ngrok.io
    IN A
    Response
    7.tcp.eu.ngrok.io
    IN A
    3.125.188.168
  • flag-us
    DNS
    7.tcp.eu.ngrok.io
    ft.exe
    Remote address:
    8.8.8.8:53
    Request
    7.tcp.eu.ngrok.io
    IN A
    Response
    7.tcp.eu.ngrok.io
    IN A
    35.157.111.131
  • 35.157.111.131:12891
    7.tcp.eu.ngrok.io
    ft.exe
    2.3kB
    9.7kB
    21
    34
  • 35.157.111.131:12891
    7.tcp.eu.ngrok.io
    ft.exe
    38.5kB
    1.0kB
    33
    24
  • 35.157.111.131:12891
    7.tcp.eu.ngrok.io
    ft.exe
    584 B
    212 B
    6
    5
  • 35.157.111.131:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 35.157.111.131:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 35.157.111.131:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 35.157.111.131:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 3.125.188.168:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 35.157.111.131:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 35.157.111.131:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 35.157.111.131:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    120 B
    3
    3
  • 35.157.111.131:12891
    7.tcp.eu.ngrok.io
    ft.exe
    152 B
    80 B
    3
    2
  • 8.8.8.8:53
    7.tcp.eu.ngrok.io
    dns
    ft.exe
    63 B
    79 B
    1
    1

    DNS Request

    7.tcp.eu.ngrok.io

    DNS Response

    35.157.111.131

  • 8.8.8.8:53
    7.tcp.eu.ngrok.io
    dns
    ft.exe
    63 B
    79 B
    1
    1

    DNS Request

    7.tcp.eu.ngrok.io

    DNS Response

    3.125.188.168

  • 8.8.8.8:53
    7.tcp.eu.ngrok.io
    dns
    ft.exe
    63 B
    79 B
    1
    1

    DNS Request

    7.tcp.eu.ngrok.io

    DNS Response

    35.157.111.131

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\ft.exe

    Filesize

    37KB

    MD5

    e481569ecba8befd9971a1644b1a6f0d

    SHA1

    e22e7b39866702efd0772fa96511ff871ad50781

    SHA256

    1275aa3de74112f8fd4aa2bd856fccb732cf337edadc3e92a7e11b732775f53e

    SHA512

    6ca77b99afebca543006c3e7dab63a24059a4d5cc18cd6fd8d2fe1a9c864823a3789a90ce4e94d2d67523bbd9a006ab487b62f44a8bf3bd5d985a5a0744d4191

  • memory/1864-10-0x0000000074A00000-0x0000000074FAB000-memory.dmp

    Filesize

    5.7MB

  • memory/1864-9-0x0000000074A00000-0x0000000074FAB000-memory.dmp

    Filesize

    5.7MB

  • memory/1864-22-0x0000000074A00000-0x0000000074FAB000-memory.dmp

    Filesize

    5.7MB

  • memory/1864-23-0x0000000074A00000-0x0000000074FAB000-memory.dmp

    Filesize

    5.7MB

  • memory/2328-0-0x0000000074A01000-0x0000000074A02000-memory.dmp

    Filesize

    4KB

  • memory/2328-1-0x0000000074A00000-0x0000000074FAB000-memory.dmp

    Filesize

    5.7MB

  • memory/2328-2-0x0000000074A00000-0x0000000074FAB000-memory.dmp

    Filesize

    5.7MB

  • memory/2328-11-0x0000000074A00000-0x0000000074FAB000-memory.dmp

    Filesize

    5.7MB

  • memory/2328-12-0x0000000074A00000-0x0000000074FAB000-memory.dmp

    Filesize

    5.7MB

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