Analysis

  • max time kernel
    123s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    21-10-2021 11:38

General

  • Target

    printing labels and items shipping marks for order 200018808.exe

  • Size

    653KB

  • MD5

    d66d39a631410003673f85a5c8293e85

  • SHA1

    a9d4a8f39d2a58e6134faabc937ca8cce58dae93

  • SHA256

    5e02cafcb735f048e38347099086988b2ee9d5c09956f95257602d3a45fd6716

  • SHA512

    8cb1f697e0a7725913971d7bcaf5cf8614247f45dff0e443f96d9e79e775cebcf7ca80977fca7ba9c6ace74ae99d477ef61ea8c084b2e1a18b3632d2f0a41a42

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.electronmash.com
  • Port:
    587
  • Username:
    office@electronmash.com
  • Password:
    Zanzibar2018

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 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\printing labels and items shipping marks for order 200018808.exe
    "C:\Users\Admin\AppData\Local\Temp\printing labels and items shipping marks for order 200018808.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1236
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GtFqyleloVs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp61EE.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1472
    • C:\Users\Admin\AppData\Local\Temp\printing labels and items shipping marks for order 200018808.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1000
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
        dw20.exe -x -s 516
        3⤵
          PID:1564

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp61EE.tmp
      MD5

      a7bcd828e930c80a47f3f8754dc13b53

      SHA1

      363192d986610bd3d3edefdd3ea36b7ae2838065

      SHA256

      28c81bea071f4c535b0a5f5434e0e60c48037cf87021d5088441f2ae32a030de

      SHA512

      19999b8dfa3a5cf00a708b445cfaa4dbdb322a826a5c625f99a12833bdc9476444d6073d12320a1885ee3d11f2ca725553a0f73cb08b49a9777aa7caad886f86

    • memory/1000-64-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1000-60-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1000-61-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1000-62-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1000-63-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1000-65-0x00000000004374FE-mapping.dmp
    • memory/1000-67-0x0000000000E40000-0x0000000000E41000-memory.dmp
      Filesize

      4KB

    • memory/1236-57-0x0000000000BE1000-0x0000000000BE2000-memory.dmp
      Filesize

      4KB

    • memory/1236-56-0x0000000000BE0000-0x0000000000BE1000-memory.dmp
      Filesize

      4KB

    • memory/1236-55-0x0000000075191000-0x0000000075193000-memory.dmp
      Filesize

      8KB

    • memory/1472-58-0x0000000000000000-mapping.dmp
    • memory/1564-68-0x0000000000000000-mapping.dmp
    • memory/1564-70-0x0000000001C90000-0x0000000001C91000-memory.dmp
      Filesize

      4KB