Overview

overview

10

Static

static

10

a0c98858ea...19.exe

windows7-x64

10

a0c98858ea...19.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    a0c98858ea96edb2386c86e1786f3419.exe

  • Size

    469KB

  • Sample

    221001-h5hh5sgfcn

  • MD5

    a0c98858ea96edb2386c86e1786f3419

  • SHA1

    461ece495d357885b8ab78341374d830ad88cb76

  • SHA256

    269546bd718741529021774e7032cf8da5075e2d18852ee0859c3c7a854f5950

  • SHA512

    0d0f7ac9a4450be50e66ca6595870118a28cefe1d4fb4289be6f0e7747a90bfad7e899ae93ae78d8effdbdf156b313e40f18db633cd8c1b763c4ccb7d974febb

  • SSDEEP

    12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSvn9:uiLJbpI7I2WhQqZ7v9

Score
10/10
remcosfirefoxpersistencerat

Malware Config

Extracted

Family

remcos

Botnet

Firefox

C2

elew3le3lanle.freeddns.org:20309

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Firefox

  • delete_file

    true

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-Z26APQ

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Firefox

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      a0c98858ea96edb2386c86e1786f3419.exe

    • Size

      469KB

    • MD5

      a0c98858ea96edb2386c86e1786f3419

    • SHA1

      461ece495d357885b8ab78341374d830ad88cb76

    • SHA256

      269546bd718741529021774e7032cf8da5075e2d18852ee0859c3c7a854f5950

    • SHA512

      0d0f7ac9a4450be50e66ca6595870118a28cefe1d4fb4289be6f0e7747a90bfad7e899ae93ae78d8effdbdf156b313e40f18db633cd8c1b763c4ccb7d974febb

    • SSDEEP

      12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSvn9:uiLJbpI7I2WhQqZ7v9

    Score
    10/10
    remcosfirefoxpersistencerat

    • Remcos

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

      ratremcos

    • Executes dropped EXE

    • Checks computer location settings

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

    • Deletes itself

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks