Overview

overview

10

Static

static

1

7977dcda33...e8.vbs

windows7-x64

8

7977dcda33...e8.vbs

windows10-2004-x64

10

Sharing

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General

  • Target

    7977dcda33f70efcfde7817d3a54fb1ad6a41b97842c709a699c10747df4ede8.vbs

  • Size

    155KB

  • Sample

    240522-r8zq9sfa44

  • MD5

    b280a8bc4f8a6540a76abf5a10195e51

  • SHA1

    833903eb2385c0703ba081eb24c3b6654859452b

  • SHA256

    7977dcda33f70efcfde7817d3a54fb1ad6a41b97842c709a699c10747df4ede8

  • SHA512

    6bbf9ada7d0af0c366a96b8b626dbb9479c02e24c3005403bfe890c8ac268cd9bef2b641ff266745521779907757acfaa44dcd106ace2ebe3ae0bfe9b6d104ec

  • SSDEEP

    1536:IbruDZJuZJd99CObitCocEW1aJK66n5yhtW0/5JpWnQcoVd9owng0B3bUZlu9gIo:sruDZJuZJdI9JK6X/fcoVd99ng0B3cn

Score
10/10
remcosxwormremotehostexecutionpersistencerattrojan

Malware Config

Extracted

Family

xworm

Version

3.1

C2

mayxw9402.duckdns.org:9402

Mutex

ZyV5MqKosTk3Hzpr

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

aes.plain

Extracted

Family

remcos

Botnet

RemoteHost

C2

reco8100may.duckdns.org:8100

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

    Rmc-KZIWQS

  • 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

      7977dcda33f70efcfde7817d3a54fb1ad6a41b97842c709a699c10747df4ede8.vbs

    • Size

      155KB

    • MD5

      b280a8bc4f8a6540a76abf5a10195e51

    • SHA1

      833903eb2385c0703ba081eb24c3b6654859452b

    • SHA256

      7977dcda33f70efcfde7817d3a54fb1ad6a41b97842c709a699c10747df4ede8

    • SHA512

      6bbf9ada7d0af0c366a96b8b626dbb9479c02e24c3005403bfe890c8ac268cd9bef2b641ff266745521779907757acfaa44dcd106ace2ebe3ae0bfe9b6d104ec

    • SSDEEP

      1536:IbruDZJuZJd99CObitCocEW1aJK66n5yhtW0/5JpWnQcoVd9owng0B3bUZlu9gIo:sruDZJuZJdI9JK6X/fcoVd99ng0B3cn

    Score
    10/10
    executionpersistenceremcosxwormremotehostrattrojan

    • Detect Xworm Payload

    • Remcos

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

      ratremcos

    • Xworm

      Xworm is a remote access trojan written in C#.

      trojanratxworm

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Checks computer location settings

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

    • Drops startup file

    • Adds Run key to start application

      persistence

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

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

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks