General

  • Target

    XClient.exe

  • Size

    80KB

  • Sample

    240420-zexc2shh8t

  • MD5

    c2c1ba206377942b6b647f39d03904b9

  • SHA1

    d0b9e4fb55ffdf2cb5a78b7e881d9ce641d9c17b

  • SHA256

    40751536a5f6d6a98f181c1ccd19c3dcbd51a194d6ec282ab9141a3ee599c4a5

  • SHA512

    83d885cd216d9e2a79e05b4270b85d1503f579548e4733ff5ae53bc1513a184345072f64216ad9445ebc2fa57af55b14277a845b1dfde152622fafbb91c07f05

  • SSDEEP

    1536:RBeQHCHtsCRq1GS8+2KWUGPh8XGAWptciXuCx/sw9lp/bXK0apO5O6u7rsOE1aSE:neRNsCRq1GS8+2DGhP8V/9Xb6BpJYOEY

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %AppData%

  • install_file

    System.exe

  • pastebin_url

    https://pastebin.com/raw/erNS5DCf

  • telegram

    https://api.telegram.org/bot6322711372:AAGbIfXFhlNS1SFeiUdz8wnaxv2bCiayqnI/sendMessage?chat_id=1098594855

Targets

    • Target

      XClient.exe

    • Size

      80KB

    • MD5

      c2c1ba206377942b6b647f39d03904b9

    • SHA1

      d0b9e4fb55ffdf2cb5a78b7e881d9ce641d9c17b

    • SHA256

      40751536a5f6d6a98f181c1ccd19c3dcbd51a194d6ec282ab9141a3ee599c4a5

    • SHA512

      83d885cd216d9e2a79e05b4270b85d1503f579548e4733ff5ae53bc1513a184345072f64216ad9445ebc2fa57af55b14277a845b1dfde152622fafbb91c07f05

    • SSDEEP

      1536:RBeQHCHtsCRq1GS8+2KWUGPh8XGAWptciXuCx/sw9lp/bXK0apO5O6u7rsOE1aSE:neRNsCRq1GS8+2DGhP8V/9Xb6BpJYOEY

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Command and Control

Web Service

1
T1102

Tasks