Analysis

  • max time kernel
    137s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 22:13

General

  • Target

    APC_abc2aaa8_8492081651__PDF____________________________________________________________________647464.exe

  • Size

    490KB

  • MD5

    18697f2af9c34770269986347b5ee11d

  • SHA1

    edd9a66203533bf046e2b4df1c00878049214b8f

  • SHA256

    33604d4a3c31c9a93c138a1c9de3152b35b3a81c57bf784e6685e17701e5c25d

  • SHA512

    d113c77a0c6f1b1bbe66b2171d5f273b5879b48b67a5e3981fc6acb433dfbd4346fefce76cd89eaf97c2531c794c6308b9ae3f4d4ca6ad9ae45ea6f123416950

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    SMTP.epaindemgroup.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    aduR#@wG#r73

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
  • Adds Run key to start application 2 TTPs 1 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\APC_abc2aaa8_8492081651__PDF____________________________________________________________________647464.exe
    "C:\Users\Admin\AppData\Local\Temp\APC_abc2aaa8_8492081651__PDF____________________________________________________________________647464.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1688
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rWddikOEarg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp117F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2016
    • C:\Users\Admin\AppData\Local\Temp\APC_abc2aaa8_8492081651__PDF____________________________________________________________________647464.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1764

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp117F.tmp

    Filesize

    1KB

    MD5

    15de54ba948f24a60b81390368fa2a44

    SHA1

    02733d4a9dc8ff9a323d62b1ce87db41cfdfd40c

    SHA256

    6110e807a36b48096e5ba3ede2b757a79209f5b0c81cd658c27c76ff80a2c5f8

    SHA512

    f584e5badac50a4bfebd61be925c98cd61dc515a7d92900f68dde727f5e1d70e78d4c7a4ee06686ad8041902526eab4533a1d5e20f9ded0391dfc21b89a62db7

  • memory/1688-57-0x0000000000980000-0x00000000009E8000-memory.dmp

    Filesize

    416KB

  • memory/1688-55-0x0000000075E31000-0x0000000075E33000-memory.dmp

    Filesize

    8KB

  • memory/1688-54-0x0000000000900000-0x0000000000980000-memory.dmp

    Filesize

    512KB

  • memory/1688-58-0x0000000004420000-0x000000000446C000-memory.dmp

    Filesize

    304KB

  • memory/1688-56-0x0000000000440000-0x000000000044A000-memory.dmp

    Filesize

    40KB

  • memory/1764-66-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1764-61-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1764-62-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1764-64-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1764-65-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1764-67-0x0000000000447EAE-mapping.dmp

  • memory/1764-69-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1764-71-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/2016-59-0x0000000000000000-mapping.dmp