Analysis

  • max time kernel
    144s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220331-en
  • submitted
    13/04/2022, 15:19

General

  • Target
    CIELHKGAE0003561816.exe
  • Size 894KB
  • Sample220413-sp6adacgbr
  • SHA256 56cea0a1ff889dc76f6f50d21bec9e36fd32f15db170f8e6c1629ccb37eb20b0
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

C2
  • https://api.telegram.org/bot1611551445:AAFDJ3yQMlB3zXJGib2_TFkq1jedBMj3GTw/sendDocument

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 IoCs
  • Drops file in Drivers directory 1 IoCs
  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\CIELHKGAE0003561816.exe
    "C:\Users\Admin\AppData\Local\Temp\CIELHKGAE0003561816.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2236
    • C:\Users\Admin\AppData\Local\Temp\CIELHKGAE0003561816.exe
      "C:\Users\Admin\AppData\Local\Temp\CIELHKGAE0003561816.exe"
      2⤵
      • Drops file in Drivers directory
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2496

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        CIELHKGAE0003561816.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\CIELHKGAE0003561816.exe.log
        • Size 1KB
        • SHA256 8d7143472e7cf3a40f46c6346251661e10fe3a932321cff14190648ee3d9c02f
        • MD5 SHA1 SHA512

        memory/2236-124-0x0000000000B20000-0x0000000000C06000-memory.dmp

        memory/2236-125-0x0000000005B30000-0x00000000060D4000-memory.dmp

        memory/2236-126-0x0000000005620000-0x00000000056B2000-memory.dmp

        memory/2236-127-0x00000000056C0000-0x000000000575C000-memory.dmp

        memory/2236-128-0x00000000055B0000-0x00000000055BA000-memory.dmp

        memory/2236-129-0x0000000008FB0000-0x0000000009016000-memory.dmp

        memory/2496-131-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/2496-133-0x0000000006820000-0x0000000006870000-memory.dmp