Analysis

  • max time kernel
    120s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    06-09-2024 02:54

General

  • Target

    3377fd58aba5f3d4073d3806c8334190N.exe

  • Size

    37KB

  • MD5

    3377fd58aba5f3d4073d3806c8334190

  • SHA1

    12c12e3d5360fa78873e67981057358f25af6b0f

  • SHA256

    63b0d11888edf5492500205233ef6c100a106074817faea08adaa5004c7e2512

  • SHA512

    1e394a04133ea7124cba2d5ccf8cb187a87c261fc8807d060cf8693d860b8405cf8e98bddd6275d207abf29f1bcb8ba03a6a41f2e521d5d8379de2933b93c3c7

  • SSDEEP

    384:I+eKMizdRjnBhFbJ8ycPZrfr7wiApXrAF+rMRTyN/0L+EcoinblneHQM3epzXq/b:RegRlLJfcPZrfFAprM+rMRa8Nuept

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

Hacked

C2

0.tcp.eu.ngrok.io:13913

Mutex

20643b012bbbb441813df9b6836bec16

Attributes
  • reg_key

    20643b012bbbb441813df9b6836bec16

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 2 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 4 IoCs
  • Drops autorun.inf file 1 TTPs 5 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Kills process with taskkill 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 28 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3377fd58aba5f3d4073d3806c8334190N.exe
    "C:\Users\Admin\AppData\Local\Temp\3377fd58aba5f3d4073d3806c8334190N.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3064
    • C:\Users\Admin\AppData\Roaming\piska.exe
      "C:\Users\Admin\AppData\Roaming\piska.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops autorun.inf file
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2720
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\piska.exe" "piska.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:2828
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /F /IM taskmgr.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2496

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Roaming\piska.exe

    Filesize

    37KB

    MD5

    3377fd58aba5f3d4073d3806c8334190

    SHA1

    12c12e3d5360fa78873e67981057358f25af6b0f

    SHA256

    63b0d11888edf5492500205233ef6c100a106074817faea08adaa5004c7e2512

    SHA512

    1e394a04133ea7124cba2d5ccf8cb187a87c261fc8807d060cf8693d860b8405cf8e98bddd6275d207abf29f1bcb8ba03a6a41f2e521d5d8379de2933b93c3c7

  • memory/2720-11-0x0000000074FB0000-0x000000007555B000-memory.dmp

    Filesize

    5.7MB

  • memory/2720-13-0x0000000074FB0000-0x000000007555B000-memory.dmp

    Filesize

    5.7MB

  • memory/2720-12-0x0000000074FB0000-0x000000007555B000-memory.dmp

    Filesize

    5.7MB

  • memory/2720-23-0x0000000074FB0000-0x000000007555B000-memory.dmp

    Filesize

    5.7MB

  • memory/2720-24-0x0000000074FB0000-0x000000007555B000-memory.dmp

    Filesize

    5.7MB

  • memory/3064-0-0x0000000074FB1000-0x0000000074FB2000-memory.dmp

    Filesize

    4KB

  • memory/3064-1-0x0000000074FB0000-0x000000007555B000-memory.dmp

    Filesize

    5.7MB

  • memory/3064-2-0x0000000074FB0000-0x000000007555B000-memory.dmp

    Filesize

    5.7MB

  • memory/3064-10-0x0000000074FB0000-0x000000007555B000-memory.dmp

    Filesize

    5.7MB