Analysis

  • max time kernel
    133s
  • max time network
    114s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    13/07/2021, 09:54

General

  • Target
    dhl SOA docs.exe
  • Size 819KB
  • Sample210713-hs49ccankx
  • SHA256 ea08fc031bc184b29f528ea6f2d34a8e8537356cb2b36826c653d769674601b3
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

C2
  • https://api.telegram.org/bot1633482536:AAF1JIS_DaayovuRrLGy_POYaI3DRc2CrPY/sendDocument

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 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.

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

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

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dhl SOA docs.exe
    "C:\Users\Admin\AppData\Local\Temp\dhl SOA docs.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3768
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KZPkos" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC4AD.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2720
    • C:\Users\Admin\AppData\Local\Temp\dhl SOA docs.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1972

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1972-138-0x0000000005721000-0x0000000005722000-memory.dmp

        memory/1972-135-0x0000000006390000-0x0000000006391000-memory.dmp

        memory/1972-134-0x0000000005770000-0x0000000005771000-memory.dmp

        memory/1972-133-0x0000000005720000-0x0000000005721000-memory.dmp

        memory/1972-126-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/3768-119-0x0000000002F60000-0x0000000002F61000-memory.dmp

        memory/3768-123-0x0000000007490000-0x0000000007509000-memory.dmp

        memory/3768-122-0x0000000007650000-0x000000000770D000-memory.dmp

        memory/3768-121-0x00000000055E0000-0x00000000055E2000-memory.dmp

        memory/3768-120-0x00000000077C0000-0x00000000077C1000-memory.dmp

        memory/3768-114-0x0000000000AA0000-0x0000000000AA1000-memory.dmp

        memory/3768-118-0x00000000053C0000-0x00000000058BE000-memory.dmp

        memory/3768-117-0x0000000005460000-0x0000000005461000-memory.dmp

        memory/3768-116-0x00000000058C0000-0x00000000058C1000-memory.dmp