Analysis

  • max time kernel
    140s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/04/2024, 15:22

General

  • Target
    FAR.N_2430-240009934.exe
  • Size 1.1MB
  • Sample240419-srv77aff86
  • SHA256 fc83bfec2d58dfb71be0fec0c02f69996c5349845dd39c8048b520696003e1fc
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FAR.N_2430-240009934.exe
    "C:\Users\Admin\AppData\Local\Temp\FAR.N_2430-240009934.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:3112
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Users\Admin\AppData\Local\Temp\FAR.N_2430-240009934.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2284
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3112 -s 668
      2⤵
      • Program crash
      PID:2892
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 192 -p 3112 -ip 3112
    1⤵
      PID:2384

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/2284-11-0x0000000000400000-0x0000000000442000-memory.dmp

          memory/2284-12-0x0000000073EE0000-0x0000000074690000-memory.dmp

          memory/2284-13-0x00000000059E0000-0x0000000005F84000-memory.dmp

          memory/2284-14-0x00000000052D0000-0x00000000052E0000-memory.dmp

          memory/2284-15-0x00000000054A0000-0x0000000005506000-memory.dmp

          memory/2284-17-0x0000000006730000-0x0000000006780000-memory.dmp

          memory/2284-18-0x0000000006820000-0x00000000068B2000-memory.dmp

          memory/2284-19-0x00000000067C0000-0x00000000067CA000-memory.dmp

          memory/2284-20-0x0000000073EE0000-0x0000000074690000-memory.dmp

          memory/2284-21-0x00000000052D0000-0x00000000052E0000-memory.dmp

          memory/3112-10-0x0000000000C90000-0x0000000000C94000-memory.dmp