Analysis

  • max time kernel
    142s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    11-06-2024 18:31

General

  • Target

    INV.exe

  • Size

    629KB

  • MD5

    7c37ca93ea31895ae8c37b5086aafb5f

  • SHA1

    36ec354b8f559c44ac1a45d9bbe56ee8dbf883db

  • SHA256

    edd8ae87a81a2627e70d3df6bbe1a7185c8045bc4ef9624c5f2b8487d86dbd73

  • SHA512

    852e0315d1930b9dcb85c7d649c2e0524eaee1ed287d21be6dbb37a27151e200236237b9d9490bc3453bf01ac2baf1e695c83e88484fd5a426482772d52fe864

  • SSDEEP

    12288:mgS5y5R7+SyRps33QjMEVyhxLBDulZ7+OibPNL5lNXKVLbziXMOvrxdRnh457ks3:65yH73QbyLlDu3C/lNXKL3i9v3Idke

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.gmail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    vjru ncjq zilj zxwk

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Loads dropped DLL 2 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\INV.exe
    "C:\Users\Admin\AppData\Local\Temp\INV.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:2740
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" -windowstyle hidden "$Fleapit=Get-Content 'C:\Users\Admin\AppData\Local\Bridgebuilding\oralizes\indart\Demulsification\Legitimistisk.Rac';$Replevy=$Fleapit.SubString(51921,3);.$Replevy($Fleapit)"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Loads dropped DLL
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2288
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" "/c set /A 1^^0"
        3⤵
          PID:2648
        • C:\Users\Admin\AppData\Local\Temp\Fugninger.exe
          "C:\Users\Admin\AppData\Local\Temp\Fugninger.exe"
          3⤵
          • Loads dropped DLL
          • Suspicious use of NtCreateThreadExHideFromDebugger
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2716

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Bridgebuilding\oralizes\indart\Demulsification\Legitimistisk.Rac

      Filesize

      50KB

      MD5

      e7abb67ce4fba756d35ab5e6dccc3e88

      SHA1

      4bc08748d926a51c7a6f0fa60a87579f130829e1

      SHA256

      6063bd1c9f0bf59ce14856996908cc8eaba317bdedf2da271da223a09040a1bd

      SHA512

      c7c86ad5838ef6e861d06b987a5e1b5dc38fd399ee1b42bec8e5b6a60e473d18449e5baa5264503660eead4b53a439f6142c7e2e30639d2457fde9e8c2ea227b

    • C:\Users\Admin\AppData\Local\Bridgebuilding\oralizes\indart\Selinas.Cel

      Filesize

      311KB

      MD5

      015664a0e6110b59cd0f52fa4aea9e9a

      SHA1

      01bb36fa054704ec6fec55856a93498127ab30d0

      SHA256

      7d950d49a8c2526bed81c4357ed6b6998030a3a3adfa27c29e3b0281a28ed7c7

      SHA512

      a37a7efe9863da2e44a984a6afc1b15e3eac95ca734bcebf68b4d453dd685a7735e0a0a1b837f641b1f1c0ba0da2002e39427ff4960f863cdec2fc3c3787a63d

    • \Users\Admin\AppData\Local\Temp\Fugninger.exe

      Filesize

      629KB

      MD5

      7c37ca93ea31895ae8c37b5086aafb5f

      SHA1

      36ec354b8f559c44ac1a45d9bbe56ee8dbf883db

      SHA256

      edd8ae87a81a2627e70d3df6bbe1a7185c8045bc4ef9624c5f2b8487d86dbd73

      SHA512

      852e0315d1930b9dcb85c7d649c2e0524eaee1ed287d21be6dbb37a27151e200236237b9d9490bc3453bf01ac2baf1e695c83e88484fd5a426482772d52fe864

    • memory/2288-8-0x00000000741B1000-0x00000000741B2000-memory.dmp

      Filesize

      4KB

    • memory/2288-9-0x00000000741B0000-0x000000007475B000-memory.dmp

      Filesize

      5.7MB

    • memory/2288-10-0x00000000741B0000-0x000000007475B000-memory.dmp

      Filesize

      5.7MB

    • memory/2288-11-0x00000000741B0000-0x000000007475B000-memory.dmp

      Filesize

      5.7MB

    • memory/2288-12-0x00000000741B0000-0x000000007475B000-memory.dmp

      Filesize

      5.7MB

    • memory/2288-16-0x0000000006570000-0x00000000084E0000-memory.dmp

      Filesize

      31.4MB

    • memory/2288-22-0x00000000741B0000-0x000000007475B000-memory.dmp

      Filesize

      5.7MB

    • memory/2716-21-0x0000000000460000-0x00000000014C2000-memory.dmp

      Filesize

      16.4MB

    • memory/2716-24-0x0000000000460000-0x00000000004A4000-memory.dmp

      Filesize

      272KB