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Analysis

  • max time kernel
    87s
  • max time network
    92s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    08/07/2020, 16:45

General

  • Target

    Invoice.exe

  • Size

    680KB

  • MD5

    e0d2b0152e85cc80c38f9ee1e2726091

  • SHA1

    3bdc9346620798e6c7906cd652573ac5d62aa67a

  • SHA256

    c019898749d270142cdd678c69e6adb31f328b16fd7c40166644eb8bcac7f15e

  • SHA512

    4115fb1bc0c48ba795c171bd9eebac61209ff285a2194be2d314d9f91741b1648cf1c0980db2ff89e54697ca0cb0e9244e331d231408332408aae52afb992902

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.ru
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    HYBRID@@@

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Invoice.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1496
    • C:\Users\Admin\AppData\Local\Temp\Invoice.exe
      "C:\Users\Admin\AppData\Local\Temp\Invoice.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1020

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1020-0-0x0000000000400000-0x00000000004A4000-memory.dmp

    Filesize

    656KB

  • memory/1020-2-0x0000000000400000-0x00000000004A4000-memory.dmp

    Filesize

    656KB

  • memory/1020-3-0x0000000000400000-0x00000000004A4000-memory.dmp

    Filesize

    656KB

  • memory/1020-4-0x00000000003B0000-0x00000000003FC000-memory.dmp

    Filesize

    304KB

  • memory/1020-5-0x00000000002E2000-0x00000000002E3000-memory.dmp

    Filesize

    4KB

  • memory/1020-6-0x0000000000310000-0x0000000000356000-memory.dmp

    Filesize

    280KB