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Analysis

  • max time kernel
    151s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    13/01/2024, 20:44

General

  • Target

    Server.exe

  • Size

    37KB

  • MD5

    a1d98613743877e6909e48a7ef961f03

  • SHA1

    d5060ec77aa7b90457fb4e0bcf13ed6d15be9f50

  • SHA256

    68887219835e5a239f80790898cce4fa77ad3551bb131b71ebe7dc01303be047

  • SHA512

    4d3039abe72a4617ba6b8c0ad2810e8448e21b8424abd7d798a5dd396e4bc3d18ee4b0a6379cdd122b4c9ecdec7812a266a15fad233ac39bded4c8091f4576f3

  • SSDEEP

    384:u8GBkiyRnDNGRn5IyUvoIdf1bg/SuswxrAF+rMRTyN/0L+EcoinblneHQM3epzXO:RZ5M5jUvtdOaufxrM+rMRa8NuMjlt

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

noob

C2

127.0.0.1:5552

Mutex

df4f4145ee2e48990df7a94a2e0f3561

Attributes
  • reg_key

    df4f4145ee2e48990df7a94a2e0f3561

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • 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 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of FindShellTrayWindow 31 IoCs
  • Suspicious use of SendNotifyMessage 31 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    "C:\Users\Admin\AppData\Local\Temp\Server.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2172
    • C:\Users\Admin\AppData\Local\Temp\FortniteHacks.exe
      "C:\Users\Admin\AppData\Local\Temp\FortniteHacks.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2676
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\FortniteHacks.exe" "FortniteHacks.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:2688
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:2748
  • C:\Windows\system32\msconfig.exe
    "C:\Windows\system32\msconfig.exe"
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of SetWindowsHookEx
    PID:1092

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    37KB

    MD5

    a1d98613743877e6909e48a7ef961f03

    SHA1

    d5060ec77aa7b90457fb4e0bcf13ed6d15be9f50

    SHA256

    68887219835e5a239f80790898cce4fa77ad3551bb131b71ebe7dc01303be047

    SHA512

    4d3039abe72a4617ba6b8c0ad2810e8448e21b8424abd7d798a5dd396e4bc3d18ee4b0a6379cdd122b4c9ecdec7812a266a15fad233ac39bded4c8091f4576f3

  • memory/2172-10-0x0000000074BE0000-0x000000007518B000-memory.dmp

    Filesize

    5.7MB

  • memory/2172-1-0x0000000074BE0000-0x000000007518B000-memory.dmp

    Filesize

    5.7MB

  • memory/2172-2-0x0000000000460000-0x00000000004A0000-memory.dmp

    Filesize

    256KB

  • memory/2172-0-0x0000000074BE0000-0x000000007518B000-memory.dmp

    Filesize

    5.7MB

  • memory/2676-16-0x0000000074BE0000-0x000000007518B000-memory.dmp

    Filesize

    5.7MB

  • memory/2676-15-0x00000000021B0000-0x00000000021F0000-memory.dmp

    Filesize

    256KB

  • memory/2676-11-0x0000000074BE0000-0x000000007518B000-memory.dmp

    Filesize

    5.7MB

  • memory/2676-17-0x0000000074BE0000-0x000000007518B000-memory.dmp

    Filesize

    5.7MB

  • memory/2676-18-0x00000000021B0000-0x00000000021F0000-memory.dmp

    Filesize

    256KB

  • memory/2676-19-0x00000000021B0000-0x00000000021F0000-memory.dmp

    Filesize

    256KB

  • memory/2748-13-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

  • memory/2748-14-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB