Analysis

  • max time kernel
    122s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    21-08-2024 02:25

General

  • Target

    d5b1e2cec0d590b3d6a8809c940b5316688ce0c8af9fbf8a42baf27888d971d5.exe

  • Size

    160KB

  • MD5

    50acfb26d39aea301a42692d269b0577

  • SHA1

    d92ece0badc23dc4562dbe6dbcd1c9f47812c6cb

  • SHA256

    d5b1e2cec0d590b3d6a8809c940b5316688ce0c8af9fbf8a42baf27888d971d5

  • SHA512

    d72c7410dfac81258ec79b03b53bda756c7b8a365ca6ac5e9578f105f69cad4911357395f5e088f9e6ddd48ff968809119556d349ea47b917168f7a3f5526430

  • SSDEEP

    3072:+39emuxx5Ph+Nrlp5LoVpbDM5M5TM+jso:+3UtZe+LbDu+Q

Malware Config

Extracted

Family

nightingale

C2

https://api.telegram.org/bot7360773915:AAGMf_A9lvN1HakLmVWWp2591SJduhueehE/sendDocument

Signatures

  • Nightingale stealer

    Nightingale stealer is an information stealer written in C#.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d5b1e2cec0d590b3d6a8809c940b5316688ce0c8af9fbf8a42baf27888d971d5.exe
    "C:\Users\Admin\AppData\Local\Temp\d5b1e2cec0d590b3d6a8809c940b5316688ce0c8af9fbf8a42baf27888d971d5.exe"
    1⤵
    • Adds Run key to start application
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1908
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /k start /b powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath C:\Users\Admin\AppData\Local\Temp\d5b1e2cec0d590b3d6a8809c940b5316688ce0c8af9fbf8a42baf27888d971d5.exe & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2680
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath C:\Users\Admin\AppData\Local\Temp\d5b1e2cec0d590b3d6a8809c940b5316688ce0c8af9fbf8a42baf27888d971d5.exe
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2668
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /k start /b powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionExtension .exe & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2748
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionExtension .exe
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2896
  • C:\Windows\system32\wbem\WmiApSrv.exe
    C:\Windows\system32\wbem\WmiApSrv.exe
    1⤵
      PID:552

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\QEVZ1QRDP17ZU53LSO28.temp

      Filesize

      7KB

      MD5

      7a7a9fcc7900b651f4dc0360a5d48b04

      SHA1

      f61f411e05f934274256a7e13f99aa8b286b8d5c

      SHA256

      eec22f155a5e32bd43c1783cbd76c731934cfd017fcc318517c0b03cf5bf5e9c

      SHA512

      8872c889e90c029b47d3f3fe07aa4493718f5416d5228a8f7dab0c1cffed507f9d3c049d45b6be380d4fec53f9f78cc5a7e18cd9b7651e01bf293a7883a4d5e5

    • memory/1908-0-0x000007FEF4D53000-0x000007FEF4D54000-memory.dmp

      Filesize

      4KB

    • memory/1908-1-0x0000000001360000-0x000000000138E000-memory.dmp

      Filesize

      184KB

    • memory/1908-2-0x000007FEF4D50000-0x000007FEF573C000-memory.dmp

      Filesize

      9.9MB

    • memory/1908-14-0x000007FEF4D53000-0x000007FEF4D54000-memory.dmp

      Filesize

      4KB

    • memory/1908-15-0x000007FEF4D50000-0x000007FEF573C000-memory.dmp

      Filesize

      9.9MB

    • memory/2668-12-0x000000001B190000-0x000000001B472000-memory.dmp

      Filesize

      2.9MB

    • memory/2668-13-0x00000000023A0000-0x00000000023A8000-memory.dmp

      Filesize

      32KB