Overview

overview

10

Static

static

PU1_0003.exe

windows7_x64

10

PU1_0003.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    0ffc737f786def0d033fdfaaf20cdbc52ffc367d50b607b8cc89e62735b480df

  • Size

    1.2MB

  • Sample

    220521-d12zrsgfe4

  • MD5

    073fd739c27265f496ce4843e0d8857f

  • SHA1

    08a00eea38fb9fcbd1fbf70c3284928ee3f5efb7

  • SHA256

    0ffc737f786def0d033fdfaaf20cdbc52ffc367d50b607b8cc89e62735b480df

  • SHA512

    df279e24a80fbd44a3f69006d417a77693215a5b63d86712f7010ddaa826a966e7d5e0d205c5acb9642bfb980f1f25df3ab8b3b339da4aa7fe67d6ccfc97a1bf

Score
10/10
remcosremotehostcoreentityratrezer0

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

RemoteHost

C2

79.134.225.118:6667

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-RNAWV7

  • 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

      PU1_0003.EXE

    • Size

      211KB

    • MD5

      4095b251cf47277508875a9e3d4c5d48

    • SHA1

      4e9816359ba41c964ee8673f3568ec4ae7170c3a

    • SHA256

      1ed676d7b5902ae99362fbbbd80e7dd2b9cb9c479d9b9a8736f30829e7fe4176

    • SHA512

      72c5b9c1ec235ab8e97bfbc494cd32764f7d79554bdb87af550c7ed6f4a85660f993d4938ebb7fa9ef1d5cf804b62a518331daa6dd848e5d9eee30dfd9089f78

    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.

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

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

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks