Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20231130-en
  • resource tags

    arch:x64arch:x86image:win7-20231130-enlocale:en-usos:windows7-x64system
  • submitted
    05-12-2023 14:15

General

  • Target

    Nghgisxtb.exe

  • Size

    407KB

  • MD5

    913aa7a8d382f9195e8057f5592e47a9

  • SHA1

    538ea79a057fb8c0bd4f02c697fbefcffef87947

  • SHA256

    8879bff7f26b389b8d375928fc6095a3847f8602e00822e3f2f67705e2d85cc0

  • SHA512

    ef731541817fac134955e1e5bd632d78e5ac6b3aa9b148b4a5fb6f1acbda91c397a6f21665d91313a9d41ad2973ac0bd26f6784885f061d30d5e139503eb0ba6

  • SSDEEP

    12288:vTz+p0qIUakJE3iQ6ZeJfTSK7An9/dhiWSI:vTz+p0qIUakJKixZeZ8/dlS

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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.

  • Adds Run key to start application 2 TTPs 2 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Nghgisxtb.exe
    "C:\Users\Admin\AppData\Local\Temp\Nghgisxtb.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2164
    • C:\Users\Admin\AppData\Local\Temp\Nghgisxtb.exe
      C:\Users\Admin\AppData\Local\Temp\Nghgisxtb.exe
      2⤵
        PID:1652
      • C:\Users\Admin\AppData\Local\Temp\Nghgisxtb.exe
        C:\Users\Admin\AppData\Local\Temp\Nghgisxtb.exe
        2⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2320

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2164-0-0x00000000002E0000-0x000000000034C000-memory.dmp

      Filesize

      432KB

    • memory/2164-1-0x0000000074820000-0x0000000074F0E000-memory.dmp

      Filesize

      6.9MB

    • memory/2164-2-0x0000000000360000-0x00000000003A0000-memory.dmp

      Filesize

      256KB

    • memory/2164-3-0x0000000001FE0000-0x000000000203A000-memory.dmp

      Filesize

      360KB

    • memory/2164-4-0x0000000000550000-0x0000000000590000-memory.dmp

      Filesize

      256KB

    • memory/2164-5-0x0000000004670000-0x00000000046B0000-memory.dmp

      Filesize

      256KB

    • memory/2164-6-0x00000000046B0000-0x00000000046FC000-memory.dmp

      Filesize

      304KB

    • memory/2164-19-0x0000000074820000-0x0000000074F0E000-memory.dmp

      Filesize

      6.9MB

    • memory/2320-8-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2320-10-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2320-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2320-11-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2320-14-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2320-18-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2320-16-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2320-20-0x0000000074820000-0x0000000074F0E000-memory.dmp

      Filesize

      6.9MB

    • memory/2320-9-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2320-21-0x0000000004A40000-0x0000000004A80000-memory.dmp

      Filesize

      256KB

    • memory/2320-23-0x0000000074820000-0x0000000074F0E000-memory.dmp

      Filesize

      6.9MB