Overview

overview

10

Static

static

10

39ec963bdf...c1.exe

windows7-x64

10

39ec963bdf...c1.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    39ec963bdfd683141a24c10435e4a6104375f5c1f61af2053b017ee55b84d1c1.exe

  • Size

    36KB

  • Sample

    240928-kel5raydqh

  • MD5

    9aa54216394c3620f7e6131a00acd8f1

  • SHA1

    e5016252d0fc9dc04bceef0334ca93d11e2bbdde

  • SHA256

    39ec963bdfd683141a24c10435e4a6104375f5c1f61af2053b017ee55b84d1c1

  • SHA512

    dda82fe927253230e36902f4a351e470703af3cb168984298689c7f37e293871d18eeace33ba6003c1b69727cad0a8ada740e7ec7bb428cae5a0417343a78b0c

  • SSDEEP

    768:/5PHyCjmhFdWfLubuZ1kvIaEekM2em014r1:/5PHfjGPAKbLVS9r

Score
10/10
remcoshostdiscoveryevasionpersistencerattrojanupx

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

dmak777.ddns.net:6522

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    system.exe

  • copy_folder

    system

  • delete_file

    true

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %ProgramFiles%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    system

  • keylog_path

    %AppData%

  • mouse_option

    true

  • mutex

    owgaigcjgxyjhgfds

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    system

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      39ec963bdfd683141a24c10435e4a6104375f5c1f61af2053b017ee55b84d1c1.exe

    • Size

      36KB

    • MD5

      9aa54216394c3620f7e6131a00acd8f1

    • SHA1

      e5016252d0fc9dc04bceef0334ca93d11e2bbdde

    • SHA256

      39ec963bdfd683141a24c10435e4a6104375f5c1f61af2053b017ee55b84d1c1

    • SHA512

      dda82fe927253230e36902f4a351e470703af3cb168984298689c7f37e293871d18eeace33ba6003c1b69727cad0a8ada740e7ec7bb428cae5a0417343a78b0c

    • SSDEEP

      768:/5PHyCjmhFdWfLubuZ1kvIaEekM2em014r1:/5PHfjGPAKbLVS9r

    Score
    10/10
    remcoshostdiscoveryevasionpersistencerattrojanupx

    • Modifies WinLogon for persistence

      persistence

    • Remcos

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

      ratremcos

    • UAC bypass

      evasiontrojan

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

      evasion

    • Adds policy Run key to start application

      persistence

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Modifies WinLogon

      persistence

    • Suspicious use of SetThreadContext

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

4
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

2
T1547.004

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

4
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

2
T1547.004

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

6
T1112

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Discovery

Query Registry

2
T1012

Remote System Discovery

1
T1018

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Virtualization/Sandbox Evasion

1
T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks