Overview

overview

10

Static

static

WO-File.PDF.exe

windows7_x64

10

WO-File.PDF.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    91s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 03:02

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General

  • Target

    WO-File.PDF.exe

  • Size

    416KB

  • MD5

    20a70b9509a96449ec99e50fa5824fed

  • SHA1

    7bed798c0c3cf3f63271a9adb8a281c14dd9da6b

  • SHA256

    c87b319c28a538e76b2f86f21b68efa15581c90c727d36d4fd415a9d899e59dd

  • SHA512

    ba1f0feba08612a7ae6b41d6ee2dfa867508e347002dcb9250063d2103f6f5fb6f50602c717b223b82610b39f2965e8851fdf1eeeb02865a7fd49709bdba6c99

Score
10/10
agentteslacollectionevasionkeyloggerpersistencespywarestealertrojan

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:     smtp
  • Host:
    mail.pro-powersourcing.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    china1977

Signatures

  • AgentTesla

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

    keyloggertrojanstealerspywareagenttesla
  • AgentTesla Payload 1 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
    evasion
  • Disables Task Manager via registry modification
    evasion
  • Drops file in Drivers directory 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs
    evasion
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
    collection
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\WO-File.PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\WO-File.PDF.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4344
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXRfOWVZyW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2606.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3540
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
      • Drops file in Drivers directory
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:1904
      • C:\Windows\SysWOW64\REG.exe
        REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
        3⤵
        • Modifies registry key
        PID:4412
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:1600
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1904 -s 1572
          3⤵
          • Program crash
          PID:1944
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1904 -ip 1904
      1⤵
        PID:4212

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Initial Access

      Execution

      Scheduled Task

      1
      T1053

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Scheduled Task

      1
      T1053

      Privilege Escalation

      Scheduled Task

      1
      T1053

      Defense Evasion

      Virtualization/Sandbox Evasion

      2
      T1497

      Modify Registry

      2
      T1112

      Credential Access

      Discovery

      Query Registry

      5
      T1012

      Virtualization/Sandbox Evasion

      2
      T1497

      System Information Discovery

      4
      T1082

      Peripheral Device Discovery

      1
      T1120

      Lateral Movement

      Collection

      Email Collection

      1
      T1114

      Exfiltration

      Command and Control

      Impact

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmp2606.tmp
        Filesize

        1KB

        MD5

        9232b53f7fd753957f014691e33aadcc

        SHA1

        b613469efcd951bed57ef6f7e1ae0b4e21ca7529

        SHA256

        a87dc895902f5ae55311ae66013d74a23c74e403f353a46195309304d94b6416

        SHA512

        f6a5186c795f6dadf6281dc2a94ee8693aaa30115c0d8b0156d27188a99ac38c5377a76d3591a2ce565e8ab616b42e40cd7f90d90e79f90600febadd3289a5ab

        Download Submit
      • memory/1600-141-0x0000000000000000-mapping.dmp
        Download
      • memory/1904-142-0x0000000006230000-0x0000000006280000-memory.dmp
        Filesize

        320KB

        Download
      • memory/1904-138-0x0000000000000000-mapping.dmp
        Download
      • memory/1904-139-0x0000000000400000-0x0000000000452000-memory.dmp
        Filesize

        328KB

        Download
      • memory/3540-136-0x0000000000000000-mapping.dmp
        Download
      • memory/4344-130-0x00000000007A0000-0x000000000080E000-memory.dmp
        Filesize

        440KB

        Download
      • memory/4344-135-0x00000000090D0000-0x0000000009136000-memory.dmp
        Filesize

        408KB

        Download
      • memory/4344-134-0x0000000008A70000-0x0000000008B0C000-memory.dmp
        Filesize

        624KB

        Download
      • memory/4344-133-0x00000000051A0000-0x00000000051AA000-memory.dmp
        Filesize

        40KB

        Download
      • memory/4344-132-0x00000000051D0000-0x0000000005262000-memory.dmp
        Filesize

        584KB

        Download
      • memory/4344-131-0x00000000056E0000-0x0000000005C84000-memory.dmp
        Filesize

        5.6MB

        Download
      • memory/4412-140-0x0000000000000000-mapping.dmp
        Download