Resubmissions

23-08-2022 14:29

220823-rtv5jafcfn 10

11-08-2022 03:16

220811-dsn3yaabek 10

05-08-2022 13:05

220805-qbq77adad5 10

05-08-2022 12:41

220805-pw3laaaebm 10

05-08-2022 10:52

220805-mygeqabgg2 10

05-08-2022 10:51

220805-myaxyabgf7 10

05-08-2022 10:51

220805-mx2n9sbgf6 10

05-08-2022 10:45

220805-mtme6sbgc3 10

05-08-2022 07:03

220805-hvb9dagcg6 10

General

  • Target

    ach remit.xls

  • Size

    32KB

  • Sample

    220805-qbq77adad5

  • MD5

    d6b1e5a67d3c55b47096c958646db5b8

  • SHA1

    29ca3e0db93d99395a893d20ab05185e105ce012

  • SHA256

    3cd2459f1d568d4aaaf422c284892810f7cb60dc69af99adb060f84a1c94ece6

  • SHA512

    df8de8e5124882750c712dfd1fbea94df28e467aec45ec7a67c1054828a377308b0993255687bfd7b8fb44e432d95c29b1bd1e75f5962a8595851a6a9b576b33

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 remit.xls

    • Size

      32KB

    • MD5

      d6b1e5a67d3c55b47096c958646db5b8

    • SHA1

      29ca3e0db93d99395a893d20ab05185e105ce012

    • SHA256

      3cd2459f1d568d4aaaf422c284892810f7cb60dc69af99adb060f84a1c94ece6

    • SHA512

      df8de8e5124882750c712dfd1fbea94df28e467aec45ec7a67c1054828a377308b0993255687bfd7b8fb44e432d95c29b1bd1e75f5962a8595851a6a9b576b33

    Score
    10/10
    • 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.

    • 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

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

3
T1012

System Information Discovery

4
T1082

Tasks