Analysis

  • max time kernel
    97s
  • max time network
    9s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    19-09-2020 12:42

General

  • Target

    Request_for_Quotation_For_Tender_No_4466839.exe

  • Size

    612KB

  • MD5

    0e6172f9e849b709f365f06a7c13346d

  • SHA1

    5715e9d57867f2a879e22e7ec8c1a43d764f308a

  • SHA256

    125203c92ab4db76de740b9cb2ce5908bbf6ee86864855a4903e2d5c17953ad1

  • SHA512

    53fd6e368484ca0ec7288cd23d2a54893e0c2756e70afdc9896b43ead14d687d9afec9079dca0a3903840aea00e3c9fce574911a36fd07903310efd0db3872e6

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.rastek.net
  • Port:
    587
  • Username:
    sales@rastek.net
  • Password:
    pR2HbM(qQT6R

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\Request_for_Quotation_For_Tender_No_4466839.exe
    "C:\Users\Admin\AppData\Local\Temp\Request_for_Quotation_For_Tender_No_4466839.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1116
    • C:\Users\Admin\AppData\Local\Temp\Request_for_Quotation_For_Tender_No_4466839.exe
      "C:\Users\Admin\AppData\Local\Temp\Request_for_Quotation_For_Tender_No_4466839.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1056

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1056-1-0x0000000000400000-0x0000000000484000-memory.dmp
    Filesize

    528KB

  • memory/1056-2-0x0000000000482E40-mapping.dmp
  • memory/1056-3-0x0000000000400000-0x0000000000484000-memory.dmp
    Filesize

    528KB

  • memory/1056-4-0x0000000000400000-0x0000000000484000-memory.dmp
    Filesize

    528KB

  • memory/1056-5-0x00000000002A0000-0x00000000002DC000-memory.dmp
    Filesize

    240KB

  • memory/1056-6-0x0000000001E62000-0x0000000001E63000-memory.dmp
    Filesize

    4KB

  • memory/1056-7-0x0000000000220000-0x0000000000256000-memory.dmp
    Filesize

    216KB

  • memory/1116-0-0x0000000000400000-0x000000000049F000-memory.dmp
    Filesize

    636KB