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Analysis

  • max time kernel
    150s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    20/01/2024, 21:16

General

  • Target

    a09a3b6b6bea6ef91aef5d0dd4581b88.exe

  • Size

    103KB

  • MD5

    a09a3b6b6bea6ef91aef5d0dd4581b88

  • SHA1

    098ed5d82ade538154634a9f44d8f91607c23392

  • SHA256

    6eea9641063b4f2e44360afc7bee1894423dc6aa92e7e497740fca1758d38c25

  • SHA512

    42c383b30292cb2521f70e3dcc30b96553e50866ab965f9304bf2808d90ea4be01efa12d380f6d9b76ffe57f09974d5563e5a6018a2009328ce18a25b4b3d1f8

  • SSDEEP

    384:y4n/7AKiwBiaJzN5BLiFI4yUvcP3vr042r49ZrAF+rMRTyN/0L+EcoinblneHQMs://hXP5TUvcPgl4HrM+rMRa8Nup0t

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

4.tcp.eu.ngrok.io:10929

Mutex

39b05030c645f6e80bce801caf1f7d61

Attributes
  • reg_key

    39b05030c645f6e80bce801caf1f7d61

  • 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
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • 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\a09a3b6b6bea6ef91aef5d0dd4581b88.exe
    "C:\Users\Admin\AppData\Local\Temp\a09a3b6b6bea6ef91aef5d0dd4581b88.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2284
    • C:\Users\Admin\windows updator_prdas.exe
      "C:\Users\Admin\windows updator_prdas.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:2668
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\windows updator_prdas.exe" "windows updator_prdas.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:2816

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\windows updator_prdas.exe

    Filesize

    103KB

    MD5

    a09a3b6b6bea6ef91aef5d0dd4581b88

    SHA1

    098ed5d82ade538154634a9f44d8f91607c23392

    SHA256

    6eea9641063b4f2e44360afc7bee1894423dc6aa92e7e497740fca1758d38c25

    SHA512

    42c383b30292cb2521f70e3dcc30b96553e50866ab965f9304bf2808d90ea4be01efa12d380f6d9b76ffe57f09974d5563e5a6018a2009328ce18a25b4b3d1f8

  • memory/2284-0-0x00000000743E0000-0x000000007498B000-memory.dmp

    Filesize

    5.7MB

  • memory/2284-1-0x00000000743E0000-0x000000007498B000-memory.dmp

    Filesize

    5.7MB

  • memory/2284-2-0x00000000005F0000-0x0000000000630000-memory.dmp

    Filesize

    256KB

  • memory/2284-10-0x00000000743E0000-0x000000007498B000-memory.dmp

    Filesize

    5.7MB

  • memory/2668-11-0x00000000743E0000-0x000000007498B000-memory.dmp

    Filesize

    5.7MB

  • memory/2668-13-0x0000000000610000-0x0000000000650000-memory.dmp

    Filesize

    256KB

  • memory/2668-12-0x00000000743E0000-0x000000007498B000-memory.dmp

    Filesize

    5.7MB

  • memory/2668-15-0x00000000743E0000-0x000000007498B000-memory.dmp

    Filesize

    5.7MB

  • memory/2668-16-0x0000000000610000-0x0000000000650000-memory.dmp

    Filesize

    256KB