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Analysis

  • max time kernel
    92s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    10/07/2020, 07:16

General

  • Target

    Emergency Situation Surcharge Update.exe

  • Size

    451KB

  • MD5

    4d7528ff3e3e634db83bdc55c56ac62a

  • SHA1

    b63bd466732bdf5b9e43a20a7442b7547a4444bf

  • SHA256

    3f258d6b65fd6594bc19ac4f3825112f78043a3c112f7bf56dd40bec84750a1e

  • SHA512

    2297087cb141f830f7f45d5e8f0d6f363396096d655d12984a93d5b1068622e326bc9379b4e6c40f589e39a8b46a2b082ffc3126e8806edc406708d6c7d41ad4

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    General101

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 IoCs
  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Emergency Situation Surcharge Update.exe
    "C:\Users\Admin\AppData\Local\Temp\Emergency Situation Surcharge Update.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1388
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\dbYVwF" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE59D.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1044
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1688
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:524

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1688-4-0x0000000000400000-0x0000000000452000-memory.dmp

      Filesize

      328KB

    • memory/1688-6-0x0000000000400000-0x0000000000452000-memory.dmp

      Filesize

      328KB

    • memory/1688-7-0x0000000000400000-0x0000000000452000-memory.dmp

      Filesize

      328KB