Analysis

  • max time kernel
    188s
  • max time network
    199s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220331-en
  • submitted
    14-04-2022 12:32

General

  • Target

    e6a4cfe30c51a5085811ae8c9ea0024d70bb3c31ded34014038781ab0b7bd14b.exe

  • Size

    1005KB

  • MD5

    49b1171f7e5372dd5a5bd85d5cbccc98

  • SHA1

    8e9f187e698216f19cfa90ccc55db84c78bc34f9

  • SHA256

    e6a4cfe30c51a5085811ae8c9ea0024d70bb3c31ded34014038781ab0b7bd14b

  • SHA512

    0b63733719a0edb4f98b31466215b530b95cb6c9723eae082655032ba88c2441277875dc23d95be6a6605e94b20b0cccc2989508ff86fff07cdf10b447b3ec98

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    pro11.emailserver.vn
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Thinhckm918149210

Signatures

  • AgentTesla

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

  • Meta Stealer Stealer

    Meta Stealer steals passwords stored in browsers, written in C++.

  • AgentTesla Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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\e6a4cfe30c51a5085811ae8c9ea0024d70bb3c31ded34014038781ab0b7bd14b.exe
    "C:\Users\Admin\AppData\Local\Temp\e6a4cfe30c51a5085811ae8c9ea0024d70bb3c31ded34014038781ab0b7bd14b.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2768
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JdhoAXyzl" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE8D9.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4832
    • C:\Users\Admin\AppData\Local\Temp\e6a4cfe30c51a5085811ae8c9ea0024d70bb3c31ded34014038781ab0b7bd14b.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3252

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\e6a4cfe30c51a5085811ae8c9ea0024d70bb3c31ded34014038781ab0b7bd14b.exe.log

    Filesize

    1KB

    MD5

    6f8f3a9a57cb30e686d3355e656031e0

    SHA1

    acccd6befb1a2f40e662280bc5182e086a0d079b

    SHA256

    283586e83b25099a5698cb9caf9c594a37060d11e0f55c81bb9c6d4f728448ea

    SHA512

    8f11d645ff4f8d5b1c45b06eb52cd45319659255306d60e80e33abfd04b9e3b1164679f11a8a23bd493e4b3f6b9841d70e553a01835eeaf6035b4d05e4fd7b54

  • C:\Users\Admin\AppData\Local\Temp\tmpE8D9.tmp

    Filesize

    1KB

    MD5

    96be82af3b7b6d2dca8015fa7c36b4ee

    SHA1

    52901be0419525a25a57be81bf2b8c52d39ebcda

    SHA256

    eaa3ac0ae43cfc13ee4641e66317b312cecb71fc6508e4257268f2cb6344e91b

    SHA512

    ea5609606083ee7c4c3b941b58749ef3a234d4b64cb7276f1481a9dab62ecc9caf16985cd7e661970e6719c3cf8585cce5084d4cec7282c82d80befdf76c7fa2

  • memory/2768-124-0x0000000000EA0000-0x0000000000FA2000-memory.dmp

    Filesize

    1.0MB

  • memory/2768-125-0x0000000005D70000-0x0000000006314000-memory.dmp

    Filesize

    5.6MB

  • memory/2768-126-0x0000000005860000-0x00000000058F2000-memory.dmp

    Filesize

    584KB

  • memory/2768-127-0x0000000005820000-0x000000000582A000-memory.dmp

    Filesize

    40KB

  • memory/2768-128-0x0000000009620000-0x0000000009B4C000-memory.dmp

    Filesize

    5.2MB

  • memory/2768-129-0x0000000009BF0000-0x0000000009C8C000-memory.dmp

    Filesize

    624KB

  • memory/3252-133-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/3252-135-0x00000000065B0000-0x0000000006616000-memory.dmp

    Filesize

    408KB