Overview

overview

10

Static

static

1

New order-...74.xls

windows7-x64

10

New order-...74.xls

windows10-2004-x64

1

Sharing

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General

  • Target

    New order-Docs0374.xls

  • Size

    317KB

  • Sample

    240423-gh1krsdh53

  • MD5

    a8a7919e3cb8e4856be6080fcc0e8ec3

  • SHA1

    1655fdad453dcf6fade55a80de640deb72301266

  • SHA256

    430e4ffa3a8066bebba12c22e2a53810f2b5dc8eeedf8f783a8487016ab4ea22

  • SHA512

    13a1a16bac29f66eb7cd76b29315f2867ec28e284c75c977ef5ff223fcab3fc85f4149c9d27c36cf20aef54c1fea9694a93f1e24a0e56e123cd00bb6f1e123c3

  • SSDEEP

    6144:5uunJtWY35qAOJl/YrLYz+WrNhZF+E+fgL+0dD8ivSbVUbMIXADuNaHUxDHDXZ6/:5vJtP3bVUbMI1JDHTZdpfTo

Score
10/10
remcosremotehostpersistencerat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

ezege.duckdns.org:14645

Attributes
  • audio_folder

    MicRecords

  • 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

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-IVESQI

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      New order-Docs0374.xls

    • Size

      317KB

    • MD5

      a8a7919e3cb8e4856be6080fcc0e8ec3

    • SHA1

      1655fdad453dcf6fade55a80de640deb72301266

    • SHA256

      430e4ffa3a8066bebba12c22e2a53810f2b5dc8eeedf8f783a8487016ab4ea22

    • SHA512

      13a1a16bac29f66eb7cd76b29315f2867ec28e284c75c977ef5ff223fcab3fc85f4149c9d27c36cf20aef54c1fea9694a93f1e24a0e56e123cd00bb6f1e123c3

    • SSDEEP

      6144:5uunJtWY35qAOJl/YrLYz+WrNhZF+E+fgL+0dD8ivSbVUbMIXADuNaHUxDHDXZ6/:5vJtP3bVUbMI1JDHTZdpfTo

    Score
    10/10
    remcosremotehostpersistencerat

    • Remcos

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

      ratremcos

    • Blocklisted process makes network request

    • Abuses OpenXML format to download file from external location

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Exploitation for Client Execution

1
T1203

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

System Information Discovery

3
T1082

Query Registry

3
T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks