Analysis

  • max time kernel
    149s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250610-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250610-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/09/2025, 04:25

General

  • Target
    a3247e6b32e3b8828c6548c88e3e3c92.exe
  • Size 43KB
  • Sample250903-e2b1eavzfz
  • SHA256 7f930050a1cfb55393b738cef30ccfeeb540bb1d047ffecd0c2aaa038bf69c29
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • njrat

Version
  • Njrat 0.7 Golden By Hassan Amiri

Botnet
  • HacKed

C2
  • 178.16.55.70:5552

Mutex
  • Windows Update

Attributes
  • reg_key

    Windows Update

  • splitter

    |Hassan|

Signatures

  • Njrat family
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 33 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a3247e6b32e3b8828c6548c88e3e3c92.exe
    "C:\Users\Admin\AppData\Local\Temp\a3247e6b32e3b8828c6548c88e3e3c92.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2512
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4356
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\a3247e6b32e3b8828c6548c88e3e3c92.exe" ..
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5920
    • C:\Users\Admin\AppData\Local\Temp\a3247e6b32e3b8828c6548c88e3e3c92.exe
      C:\Users\Admin\AppData\Local\Temp\a3247e6b32e3b8828c6548c88e3e3c92.exe ..
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1320
  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    C:\Users\Admin\AppData\Local\Temp/Server.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5672
  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    C:\Users\Admin\AppData\Local\Temp/Server.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5092
  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    C:\Users\Admin\AppData\Local\Temp/Server.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1984

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        Server.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Server.exe.log
        • Size 507B
        • SHA256 650faa13e983c9046c9030f63a5fa1c33900432ec7cb3762e015da2e7c5b34a5
        • MD5 SHA1 SHA512

        Server.exe

        • Path C:\Users\Admin\AppData\Local\Temp\Server.exe
        • Size 43KB
        • SHA256 7f930050a1cfb55393b738cef30ccfeeb540bb1d047ffecd0c2aaa038bf69c29
        • MD5 SHA1 SHA512 SSDEEP

        memory/1320-8-0x0000000005550000-0x0000000005560000-memory.dmp

        memory/2512-2-0x0000000004F70000-0x0000000004F80000-memory.dmp

        memory/2512-4-0x0000000005630000-0x0000000005BD4000-memory.dmp

        memory/2512-5-0x0000000005120000-0x00000000051B2000-memory.dmp

        memory/2512-0-0x00000000002E0000-0x00000000002F2000-memory.dmp

        memory/2512-9-0x0000000004F70000-0x0000000004F80000-memory.dmp

        memory/2512-10-0x0000000004F70000-0x0000000004F80000-memory.dmp

        memory/2512-3-0x0000000004F70000-0x0000000004F80000-memory.dmp

        memory/2512-14-0x00000000050A0000-0x00000000050AA000-memory.dmp

        memory/2512-15-0x0000000005320000-0x0000000005386000-memory.dmp

        memory/2512-17-0x0000000006120000-0x0000000006138000-memory.dmp

        memory/2512-1-0x0000000004D20000-0x0000000004DBC000-memory.dmp