Overview

overview

10

Static

static

8

ACH Remitt...ce.xls

windows7-x64

10

ACH Remitt...ce.xls

windows10-2004-x64

10

Sharing

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General

  • Target

    ACH Remittance Advice.xls

  • Size

    32KB

  • Sample

    220806-jlyxfseff3

  • MD5

    923b393d7738d5c824a4da64abd6007e

  • SHA1

    9446fcfd725c935e80f0312aa9a2dfdd0239515e

  • SHA256

    9974c9454063925957f3353990334261dcedd5372c664c4a2e49b478b3a22c6a

  • SHA512

    0b965ad2be591cd8d5a18ace6154fc33f2da6f320731e25f9206ad8ccd8c189d81a8616bec403576b3203ef824ad86829986e4db6566a0395dae97f4a4d06f0d

Score
10/10
remcosremotehostmacromacro_on_actionrat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

williamsmack.duckdns.org:991

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

    Remcos-947HIW

  • 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

Targets

    • Target

      ACH Remittance Advice.xls

    • Size

      32KB

    • MD5

      923b393d7738d5c824a4da64abd6007e

    • SHA1

      9446fcfd725c935e80f0312aa9a2dfdd0239515e

    • SHA256

      9974c9454063925957f3353990334261dcedd5372c664c4a2e49b478b3a22c6a

    • SHA512

      0b965ad2be591cd8d5a18ace6154fc33f2da6f320731e25f9206ad8ccd8c189d81a8616bec403576b3203ef824ad86829986e4db6566a0395dae97f4a4d06f0d

    Score
    10/10
    remcosremotehostrat

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Remcos

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

      ratremcos

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Loads dropped DLL

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

3
T1012

System Information Discovery

4
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks