Analysis

  • max time kernel
    120s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 22:39

General

  • Target

    2020819 MCHPLT.exe

  • Size

    715KB

  • MD5

    434bad3dddf2e21f14a918e7c52a00cd

  • SHA1

    60f13b562b9768f85aed3f8510e3f8b906c2268b

  • SHA256

    b745f8bc7dd3ee96edc308bcfbe51d0807a32a31be0a99b56a847d9df84cc200

  • SHA512

    54e481ddd31cbccde5a6085523270c05dee2f90a0b00ca8e7b95b0c587ad69d4f154a05bad6b033126e64b129e670131e8483de4b9ee5c11dea4e48fa3be7d44

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.hybridgroupco.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Obinna123@@@

Signatures

  • AgentTesla

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

  • AgentTesla Payload 6 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 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 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2020819 MCHPLT.exe
    "C:\Users\Admin\AppData\Local\Temp\2020819 MCHPLT.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1512
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OfrPSj" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB701.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:856
    • C:\Users\Admin\AppData\Local\Temp\2020819 MCHPLT.exe
      "C:\Users\Admin\AppData\Local\Temp\2020819 MCHPLT.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1128

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpB701.tmp

    Filesize

    1KB

    MD5

    f34dbc7fa2f91576af8de5be5c9fefd5

    SHA1

    83417e73b4dc72978e824966353b5818b6711488

    SHA256

    86441c31d089e085b2c4ed3f14554d6dd2d2bd3ed3cdc3e0270fc3e9905491b0

    SHA512

    59bbaf8ec47aecb356dad6d09ec02035a564e9a4679bc22f96601737b7da98e37e0e6b67b2f1f78b88933dd7881a4f2f0c6a1ceeed8ca6d873bdcb08f755ce0d

  • memory/856-56-0x0000000000000000-mapping.dmp

  • memory/1128-61-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/1128-58-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/1128-59-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/1128-62-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/1128-63-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/1128-64-0x000000000046141E-mapping.dmp

  • memory/1128-66-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/1128-68-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/1128-70-0x00000000745D0000-0x0000000074B7B000-memory.dmp

    Filesize

    5.7MB

  • memory/1512-55-0x0000000074640000-0x0000000074BEB000-memory.dmp

    Filesize

    5.7MB

  • memory/1512-54-0x0000000076421000-0x0000000076423000-memory.dmp

    Filesize

    8KB