Overview

overview

10

Static

static

10

FiveMFileE...er.exe

windows7-x64

10

FiveMFileE...er.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    150s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2024 17:02

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General

  • Target

    FiveMFileErrorFixer.exe

  • Size

    93KB

  • MD5

    45c9b9fa6b615cd1f013e13d8b3054bb

  • SHA1

    fc0c3e255a13aa5ae27f6c290ce329bed5265453

  • SHA256

    24f4b10f40eb128bab7c7692f3dee8892c91bdb5d8d40e5231543726dda521e4

  • SHA512

    743ec0a866258b81a65f432d9179a151f770e141a933ba43d640ce4479533207b5c105fd6a2fc15b6818bd4324a652209c3a3a64de81da372cd5e268d6a0d3d3

  • SSDEEP

    1536:MPPmqVulfoEGUeFXAOPc+jEwzGi1dDjDmgS:MP8lfodUeBAOPcHi1dDL

Score
10/10
njrathackeddiscoveryevasionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

hakim32.ddns.net:2000

127.0.0.1:5552
Mutex

660d96b74fc3ffcb1da26329a0336912

Attributes
  • reg_key

    660d96b74fc3ffcb1da26329a0336912

  • splitter

    |'|'|

Signatures

  • Njrat family
    njrat
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Disables Task Manager via registry modification
    evasion
  • Modifies Windows Firewall 2 TTPs 3 IoCs
    evasion
  • Drops startup file 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Drops autorun.inf file 1 TTPs 4 IoCs

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

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 9 IoCs

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

    persistenceprivilege_escalation
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

    discovery
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FiveMFileErrorFixer.exe
    "C:\Users\Admin\AppData\Local\Temp\FiveMFileErrorFixer.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2104
    • C:\Users\Admin\AppData\Local\Temp\server.exe
      "C:\Users\Admin\AppData\Local\Temp\server.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Drops autorun.inf file
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3064
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:2148
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe"
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:2704
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:2736

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\app
    Filesize

    5B

    MD5

    f478c76bbb3174dbc7fabae62224f818

    SHA1

    bed239508bad9fcd15a9bdea1e132f62468d07d1

    SHA256

    d7a0af52f260c87ef40bdfc1f1196faf7797593d62c6120ae99957d78762ed1a

    SHA512

    b653aa05746c721c9129456de3798d9e94385a0e5630c5d497fa0d6076274560885edd5875232b40d07aafa3f0e929e9b3bf2ff388ad2c21b3589cb01b79f94b

    Download Submit

  • \Users\Admin\AppData\Local\Temp\server.exe
    Filesize

    93KB

    MD5

    45c9b9fa6b615cd1f013e13d8b3054bb

    SHA1

    fc0c3e255a13aa5ae27f6c290ce329bed5265453

    SHA256

    24f4b10f40eb128bab7c7692f3dee8892c91bdb5d8d40e5231543726dda521e4

    SHA512

    743ec0a866258b81a65f432d9179a151f770e141a933ba43d640ce4479533207b5c105fd6a2fc15b6818bd4324a652209c3a3a64de81da372cd5e268d6a0d3d3

    Download Submit

  • memory/2104-0-0x0000000074AE1000-0x0000000074AE2000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2104-1-0x0000000074AE0000-0x000000007508B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2104-2-0x0000000074AE0000-0x000000007508B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2104-14-0x0000000074AE0000-0x000000007508B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3064-15-0x0000000074AE0000-0x000000007508B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3064-16-0x0000000074AE0000-0x000000007508B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3064-55-0x0000000074AE0000-0x000000007508B000-memory.dmp

    Filesize

    5.7MB

    Download