Overview

overview

10

Static

static

Ton-Keep p...df.exe

windows7_x64

10

Ton-Keep p...df.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 22:17

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General

  • Target

    Ton-Keep purchase order_pdf.exe

  • Size

    461KB

  • MD5

    eaa3035b2314bfba3c2a110d8a43b5be

  • SHA1

    6953afddd00c760525ea91c376b1d5205164841f

  • SHA256

    67163c34b396f7fc4a1dec14c1a0e598d5ac5786e6c26f11c8b8b16b31b70f4c

  • SHA512

    79e38dc75a67c886463cbd0b924973a409973ad68fe1968c84fe47766854399347aff59b96fb9a099abb802cbb6c5c8ed76eb68b1a9ce753a74cbf2671e90148

Score
10/10
remcosxxxtewevasionrat

Malware Config

Extracted

Family

remcos

Version

2.7.0 Pro

Botnet

xxxtew

C2

194.5.97.70:2404

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    xxxtew-J74IDK

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    wikipedia;solitaire;

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

    ratremcos
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
    evasion
  • 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.

  • 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.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

    persistence
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Ton-Keep purchase order_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Ton-Keep purchase order_pdf.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2612
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WyfLTKwIGXwba" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFE46.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1068
    • C:\Users\Admin\AppData\Local\Temp\Ton-Keep purchase order_pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Ton-Keep purchase order_pdf.exe"
      2⤵
        PID:4512

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Virtualization/Sandbox Evasion

    2
    T1497

    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

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpFE46.tmp
      Filesize

      1KB

      MD5

      785d9a2aa6908e318bae8e23f7a06bd1

      SHA1

      758aaa8ab098688ce6103101ed38f008036af94f

      SHA256

      15c10f782b18c287003644c088e87e3dcf47ea95eb0fd9e7c1a30275bc48a567

      SHA512

      bd8688416a5e6b6abebcefbd69fcc7277a8c942f94947d56862a98483496020cdf26e9046d5673ce9721e9d065d3dfaca8faf2a641d4eb18ff7b2fbf2e113547

      Download Submit
    • memory/1068-137-0x0000000000000000-mapping.dmp
      Download
    • memory/2612-136-0x0000000006380000-0x00000000063E6000-memory.dmp
      Filesize

      408KB

      Download
    • memory/2612-133-0x0000000005650000-0x00000000056E2000-memory.dmp
      Filesize

      584KB

      Download
    • memory/2612-134-0x0000000005590000-0x000000000559A000-memory.dmp
      Filesize

      40KB

      Download
    • memory/2612-135-0x00000000056F0000-0x0000000005746000-memory.dmp
      Filesize

      344KB

      Download
    • memory/2612-130-0x0000000000AE0000-0x0000000000B5A000-memory.dmp
      Filesize

      488KB

      Download
    • memory/2612-132-0x0000000005B60000-0x0000000006104000-memory.dmp
      Filesize

      5.6MB

      Download
    • memory/2612-131-0x00000000054F0000-0x000000000558C000-memory.dmp
      Filesize

      624KB

      Download
    • memory/4512-139-0x0000000000000000-mapping.dmp
      Download
    • memory/4512-140-0x0000000000400000-0x0000000000421000-memory.dmp
      Filesize

      132KB

      Download
    • memory/4512-142-0x0000000000400000-0x0000000000421000-memory.dmp
      Filesize

      132KB

      Download
    • memory/4512-143-0x0000000000400000-0x0000000000421000-memory.dmp
      Filesize

      132KB

      Download