General

  • Target

    NEAS.7d75d4b4861ce4669ee9245e8ee7c141eb9b9f56fb6fdcabf9a295ff36498a47exe.exe

  • Size

    2MB

  • Sample

    231204-t55t8ada33

  • MD5

    f900583508c284059608aceb44dc26b3

  • SHA1

    f25e4f7f4d6e79a368f7dcbf02f6ae9f7df012b1

  • SHA256

    7d75d4b4861ce4669ee9245e8ee7c141eb9b9f56fb6fdcabf9a295ff36498a47

  • SHA512

    b64f3e7ccc217c2173344e705688c553e2283ad40fbcb943e873e6ecd9a7fc637dba3eb645a316c4156941c8db6935fd1d9f40ad21490cdeb5a85ae725568fe5

  • SSDEEP

    49152:UkQzWGa8pH8yc0/wU2lpe63ZrxKrVEbRIqiPt41tFehg1mQ5C:UNqGa8pcyV/wjpdZrxEVEtI14Vqn

Malware Config

Extracted

Family

remcos

Botnet

23

C2

dksak.ddns.net:3835

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

    dfgkjrt-P85IFD

  • 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

      NEAS.7d75d4b4861ce4669ee9245e8ee7c141eb9b9f56fb6fdcabf9a295ff36498a47exe.exe

    • Size

      2MB

    • MD5

      f900583508c284059608aceb44dc26b3

    • SHA1

      f25e4f7f4d6e79a368f7dcbf02f6ae9f7df012b1

    • SHA256

      7d75d4b4861ce4669ee9245e8ee7c141eb9b9f56fb6fdcabf9a295ff36498a47

    • SHA512

      b64f3e7ccc217c2173344e705688c553e2283ad40fbcb943e873e6ecd9a7fc637dba3eb645a316c4156941c8db6935fd1d9f40ad21490cdeb5a85ae725568fe5

    • SSDEEP

      49152:UkQzWGa8pH8yc0/wU2lpe63ZrxKrVEbRIqiPt41tFehg1mQ5C:UNqGa8pcyV/wjpdZrxEVEtI14Vqn

    • ModiLoader, DBatLoader

      ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

    • Remcos

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

    • ModiLoader Second Stage

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

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

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Remote System Discovery

1
T1018

Tasks