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Overview

overview

10

Static

static

10

Server.exe

windows7-x64

10

Server.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/01/2025, 10:23

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General

  • Target

    Server.exe

  • Size

    93KB

  • MD5

    a9ba2416df448c5f3b36581ecfa4cd31

  • SHA1

    105592c84c83cbf4e6f7b6978ecb6d37c99440b7

  • SHA256

    b12ace477963fdde7e7b3c3b81dc01d585d87097e68bed90f5dd41077556b4bf

  • SHA512

    456ffb46cf5d914108a68292e1f9e73665e7dd3905015c76709ecc954d02b50d9dfdd758c2178791d75aa1010b7c0f2e0cf92659f2471a227497343477e6c9f3

  • SSDEEP

    768:+Y3DCdhWXxyFcxovUKUJuROprXtgN8eYhYbmXxrjEtCdnl2pi1Rz4Rk3GsGdpQgM:hCzWhIUKcuOJXPhBjEwzGi1dDiDQgS

Score
10/10
njrathackeddefense_evasiondiscoverypersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

hakim32.ddns.net:2000

127.0.0.1:5513
Mutex

67364a37f43593883a7b70eb2426799a

Attributes
  • reg_key

    67364a37f43593883a7b70eb2426799a

  • splitter

    |'|'|

Signatures

  • Njrat family
    njrat
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Disables Task Manager via registry modification
    defense_evasion
  • Modifies Windows Firewall 2 TTPs 3 IoCs
    defense_evasion
  • Drops startup file 4 IoCs
  • Executes dropped EXE 2 IoCs
  • 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 7 IoCs

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

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

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 37 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    "C:\Users\Admin\AppData\Local\Temp\Server.exe"
    1⤵
    • Drops startup file
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1000
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server.exe" "Server.exe" ENABLE
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:4964
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server.exe"
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:4488
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server.exe" "Server.exe" ENABLE
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:2412
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /sc minute /mo 1 /tn StUpdate /tr C:\Users\Admin\AppData\Local\Temp/StUpdate.exe
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1120
  • C:\Users\Admin\AppData\Local\Temp\StUpdate.exe
    C:\Users\Admin\AppData\Local\Temp/StUpdate.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3156
  • C:\Users\Admin\AppData\Local\Temp\StUpdate.exe
    C:\Users\Admin\AppData\Local\Temp/StUpdate.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4760

Network

MITRE ATT&CK Enterprise v15

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Downloads

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

    408B

    MD5

    661cab77d3b907e8057f2e689e995af3

    SHA1

    5d1a0ee9c5ee7a7a90d56d00c10dc0e679bee01c

    SHA256

    8f27f95ad7c09f2e05d7960e78ef8cd935c1262e9657883a75d70dcb877592d2

    SHA512

    2523b316bd79fed0e9b3d73f46959f3dfe270cf950f34bd9d49fe4113a2ae46d0cd00224d848bc40c0d8c55449e2dccc4b4278ba4809c0ca9ede1ac75673fc67

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\StUpdate.exe
    Filesize

    93KB

    MD5

    a9ba2416df448c5f3b36581ecfa4cd31

    SHA1

    105592c84c83cbf4e6f7b6978ecb6d37c99440b7

    SHA256

    b12ace477963fdde7e7b3c3b81dc01d585d87097e68bed90f5dd41077556b4bf

    SHA512

    456ffb46cf5d914108a68292e1f9e73665e7dd3905015c76709ecc954d02b50d9dfdd758c2178791d75aa1010b7c0f2e0cf92659f2471a227497343477e6c9f3

    Download Submit

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

    5B

    MD5

    c60feebd511c87b86dea130692995a0f

    SHA1

    d64447a8b3d8949cab5a1f8d168f7c6fee6b6a0a

    SHA256

    632994320c04707e7ef564b3e983a694170561659552a24dfe14a922dcf0f511

    SHA512

    bf03fbf3329c6f7a21ecd620319ef1a6f676b22a27afd24aab546483c3fe5f6eee7bbcfdc14c5f6626957f2b96519bdd21aaea45d74a80253fa4220c8c12df7c

    Download Submit

  • memory/1000-0-0x0000000074732000-0x0000000074733000-memory.dmp

    Filesize

    4KB

    Download

  • memory/1000-1-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/1000-2-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/1000-8-0x0000000074732000-0x0000000074733000-memory.dmp

    Filesize

    4KB

    Download

  • memory/1000-9-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/1000-10-0x0000000074730000-0x0000000074CE1000-memory.dmp

    Filesize

    5.7MB

    Download