Analysis

  • max time kernel
    121s
  • max time network
    117s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    09-07-2020 06:42

General

  • Target

    invoice 20SMX0701006N20SMX0701007N.exe

  • Size

    738KB

  • MD5

    f19e6a2e94a9e8df79bba2be0f615382

  • SHA1

    11392f28bb332471e769a262f7e75cdbe618e939

  • SHA256

    21ae6a2cb858073f8ef1089c949f36fd890f79a9b5f2385f945b1bc7a8a4da76

  • SHA512

    a14bbb3ee0d4ac3f76ca500e9fadbfcd8d4eeaf18db52b8ad00143b1956e0b4f580b2e25b0ad98679d7ad4777beae21d5fd0ab1fde169d37117c975e7b9d18d7

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    chibuikelightwork1

Signatures

  • Suspicious use of WriteProcessMemory 8 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • 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.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • AgentTesla

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\invoice 20SMX0701006N20SMX0701007N.exe
    "C:\Users\Admin\AppData\Local\Temp\invoice 20SMX0701006N20SMX0701007N.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    • Suspicious use of SetThreadContext
    PID:344
    • C:\Users\Admin\AppData\Local\Temp\invoice 20SMX0701006N20SMX0701007N.exe
      "{path}"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:3896

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\invoice 20SMX0701006N20SMX0701007N.exe.log

  • memory/3896-0-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/3896-1-0x0000000000446B9E-mapping.dmp