Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    23-05-2024 02:28

General

  • Target

    cdc1d4a0a6ee88e02e56cd34b06c49adb88a650924d0f3be4e3bc8f47aaef86d.exe

  • Size

    659KB

  • MD5

    55e015f998bcf91ac5984298d41de7ba

  • SHA1

    bcab84326176900d85ce740486c9498a8d23ebd5

  • SHA256

    cdc1d4a0a6ee88e02e56cd34b06c49adb88a650924d0f3be4e3bc8f47aaef86d

  • SHA512

    6b490994dd0ac4038da850c0af9019f3d683c2df7bcc5d76292ee01f8c70098df15d8e74127610eae64d471de55edbd67f39dcc064d2f42ccb25857e169ba172

  • SSDEEP

    12288:BQgzi8LkpEa4qAvIZX5cNIixfPdORFIK0x7+2qYxUunx6TPZaty3k3SKlonmfSL2:BQg2jEFqhZX5O3xHdWD+q2j7Es43ek3y

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot7171896485:AAHBPgJTIceKNYXu1ygNkvPPqrgHeOG7q7k/

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

  • 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 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cdc1d4a0a6ee88e02e56cd34b06c49adb88a650924d0f3be4e3bc8f47aaef86d.exe
    "C:\Users\Admin\AppData\Local\Temp\cdc1d4a0a6ee88e02e56cd34b06c49adb88a650924d0f3be4e3bc8f47aaef86d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1936
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\NyKHuE.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2728
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NyKHuE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp72CF.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2568
    • C:\Users\Admin\AppData\Local\Temp\cdc1d4a0a6ee88e02e56cd34b06c49adb88a650924d0f3be4e3bc8f47aaef86d.exe
      "C:\Users\Admin\AppData\Local\Temp\cdc1d4a0a6ee88e02e56cd34b06c49adb88a650924d0f3be4e3bc8f47aaef86d.exe"
      2⤵
        PID:2396
      • C:\Users\Admin\AppData\Local\Temp\cdc1d4a0a6ee88e02e56cd34b06c49adb88a650924d0f3be4e3bc8f47aaef86d.exe
        "C:\Users\Admin\AppData\Local\Temp\cdc1d4a0a6ee88e02e56cd34b06c49adb88a650924d0f3be4e3bc8f47aaef86d.exe"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2684

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp72CF.tmp

      Filesize

      1KB

      MD5

      b8df73364457d383b01761167150e26f

      SHA1

      440d7c2ceaa01b8e3e4a31337bf0fef7369ae62e

      SHA256

      c89e4d7302152beafb0a3b65bfd377f3dd656fd50a7e1f8fdaa4d1a7f204cd19

      SHA512

      3b5d8b0de70ecc7b19fa5c6fbcd849c51def1a0971d2d74420c50010ec7efdd60060cc9bbe97d296c4f7a17279f94d7aa26ab57a50d70699e58c9c016e794213

    • memory/1936-24-0x0000000074230000-0x000000007491E000-memory.dmp

      Filesize

      6.9MB

    • memory/1936-0-0x000000007423E000-0x000000007423F000-memory.dmp

      Filesize

      4KB

    • memory/1936-3-0x0000000000440000-0x000000000045A000-memory.dmp

      Filesize

      104KB

    • memory/1936-4-0x0000000000360000-0x0000000000370000-memory.dmp

      Filesize

      64KB

    • memory/1936-5-0x0000000005350000-0x00000000053D4000-memory.dmp

      Filesize

      528KB

    • memory/1936-1-0x00000000012C0000-0x000000000136A000-memory.dmp

      Filesize

      680KB

    • memory/1936-2-0x0000000074230000-0x000000007491E000-memory.dmp

      Filesize

      6.9MB

    • memory/2684-23-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2684-21-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2684-20-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2684-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2684-17-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2684-15-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2684-13-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2684-11-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB