Analysis

  • max time kernel
    4294217s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20220310-en
  • submitted
    14-04-2022 13:42

General

  • Target

    b709fac7630fa728c21d189818663b2c1459f8881f8674c06dbe300d437b9b07.exe

  • Size

    891KB

  • MD5

    279794744b9f022ebe655c791a8e1578

  • SHA1

    e45225509f5cafa7add2b6702840fc356a422ba0

  • SHA256

    b709fac7630fa728c21d189818663b2c1459f8881f8674c06dbe300d437b9b07

  • SHA512

    ad5091feee766f15a49de75dad3c74dced10b8c7e3d574e16a04f815939feb20e058fe4e8ee51733f172d75d83939d0499999d3a69ddb430dc4abbf26b702e4b

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    t$KMOPJ9

Signatures

  • AgentTesla

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

  • AgentTesla Payload 6 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • 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 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b709fac7630fa728c21d189818663b2c1459f8881f8674c06dbe300d437b9b07.exe
    "C:\Users\Admin\AppData\Local\Temp\b709fac7630fa728c21d189818663b2c1459f8881f8674c06dbe300d437b9b07.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1924
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NKkBqEEi" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBC2E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:692
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1284

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpBC2E.tmp

    Filesize

    1KB

    MD5

    fbfcd1cd87d907a549d899bab025bdf1

    SHA1

    a4899e97f643330324d844cf1f6cf640f5892513

    SHA256

    05b2830cb3f7e598a486509aacc21b157b18ad635ed83f31f765ab57a9979f41

    SHA512

    b8388b5214744a3acfc7e601ab9b93e9d6695b448c669f976e1d36b2b7aee5226c6e4b25e52d5fde8134b69bcfb91ab0550f8e2e588d8e64978de07a44d015ce

  • memory/1284-60-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1284-59-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1284-62-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1284-63-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1284-64-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1284-67-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1284-69-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1924-56-0x0000000005700000-0x00000000057B6000-memory.dmp

    Filesize

    728KB

  • memory/1924-55-0x0000000000460000-0x000000000047E000-memory.dmp

    Filesize

    120KB

  • memory/1924-54-0x0000000000A60000-0x0000000000B46000-memory.dmp

    Filesize

    920KB