Analysis

  • max time kernel
    166s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 11:59

General

  • Target

    Payment Advice_pdf.exe

  • Size

    731KB

  • MD5

    acdf61b83e2097c02aa579b8ca83d26b

  • SHA1

    7aee028120be4be9df824f2d90329cbd0cf72578

  • SHA256

    68fc1b87f19de1765e5dab39ebabef62e2acf44a61942918016dad9513e8b910

  • SHA512

    e2925b2c72fb78c3e654cc882fcf6ecaa9e692b1387d11867e05f32e666f21c7ac83d3e718429c9e6080d105f947ec56d4eb21774bde9eba9651b22f8e4a386e

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.mahandor.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Mik3$mill10n

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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 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\Payment Advice_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment Advice_pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:888
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GLKtabpmHwo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3709.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1168
    • C:\Users\Admin\AppData\Local\Temp\Payment Advice_pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Payment Advice_pdf.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:2016

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp3709.tmp

    Filesize

    1KB

    MD5

    8b425df3c17b453d7d59b864c6a0cfec

    SHA1

    60f6b4fb5eb60b0c95935325c636b8ad8a784ae0

    SHA256

    6317158d3e2680a54d37a63c579174d483fb889889bd79f9b6f1ea739b8fc766

    SHA512

    8a6aeb32efce08e201705cfa44b65f2caf9b723fe8de67ce1b634e100b2b9a83b3830272e4424bab28f3f0e544fcdd12dc3cd30c513fbdf70bf3411bef1a5a54

  • memory/888-57-0x00000000053F0000-0x0000000005492000-memory.dmp

    Filesize

    648KB

  • memory/888-56-0x0000000000400000-0x0000000000408000-memory.dmp

    Filesize

    32KB

  • memory/888-54-0x0000000001200000-0x00000000012BE000-memory.dmp

    Filesize

    760KB

  • memory/888-58-0x0000000005490000-0x0000000005506000-memory.dmp

    Filesize

    472KB

  • memory/888-55-0x0000000075D21000-0x0000000075D23000-memory.dmp

    Filesize

    8KB

  • memory/1168-59-0x0000000000000000-mapping.dmp

  • memory/2016-62-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/2016-61-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/2016-64-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/2016-65-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/2016-66-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/2016-67-0x000000000046091E-mapping.dmp

  • memory/2016-69-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/2016-71-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB