Overview

overview

10

Static

static

Purchase O...df.exe

windows7_x64

10

Purchase O...df.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    79fa7a8cef490b50a5ce9d102e4e2af0e0f4e151ed2d3ed9222fec8994af0212

  • Size

    219KB

  • Sample

    220521-n5sl1ahggq

  • MD5

    80010761105b865ea4aaf1334b89b89c

  • SHA1

    819c81f2f7f7f9dc2a584a72809543eefa8d1482

  • SHA256

    79fa7a8cef490b50a5ce9d102e4e2af0e0f4e151ed2d3ed9222fec8994af0212

  • SHA512

    54d3200759da7d32dc983d477fc94ece3f6d9efe8f21b5e43e63ce622b56892b29fb3ad17cd534b02dcb19b785be6ad061334498379472098e673ad330b2a398

Score
10/10
remcosremotehostcoreentityratrezer0

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

RemoteHost

C2

youngboss1994.ddns.net:1965

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

    Remcos-E4WDQB

  • 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;

Targets

    • Target

      Purchase Order SZ5-9-020,pdf.exe

    • Size

      335KB

    • MD5

      8a1a0f3f4305c2d377e49ef3ed00c958

    • SHA1

      7a3e4a05fa7a88567457ef55e2e133371a40e724

    • SHA256

      227c14f96fe815771903d9c8050d094efc19423e072f06b75a40a5305fb04476

    • SHA512

      0a516dd70b882d7c58bca50eac2d9bc0f92bde719de9c245ec2672e0cffd1c39e61baa52ff2d00771605f384719634bc5f5b0893feb224ebd562a684a35585b4

    Score
    10/10
    remcosremotehostcoreentityratrezer0

    • CoreEntity .NET Packer

      A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

      coreentity

    • Remcos

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

      ratremcos

    • ReZer0 packer

      Detects ReZer0, a packer with multiple versions used in various campaigns.

      rezer0

    • Checks computer location settings

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

    • Uses the VBS compiler for execution

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1
T1064

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Scripting

1
T1064

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks