General

  • Target

    Exloader.exe

  • Size

    161KB

  • Sample

    240413-yk7washa85

  • MD5

    6c302eb7e13e60bd8f3cc67ef9b685dd

  • SHA1

    ba2f843319f06b8bfde22df5d865a25261749634

  • SHA256

    1ce0215bb48b46c40af305c5cfe0ef2cea705042da8e3421530beb709a294c08

  • SHA512

    52d8b8eb9123fb77e6a6ba5c91bd4df099def5e4f71cfc998c9be8f478f4bd64b3ea12d8eb87e105827c542dea5829b2fe49f468522d6de4cc146bd918032ad0

  • SSDEEP

    3072:ometwGYzolHdNYAOWbECrTG93M3ONGMa5:jTkXblc3M/3

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    Chrome.exe

  • pastebin_url

    https://pastebin.com/raw/SskbLNL2

  • telegram

    https://api.telegram.org/bot6908115126:AAFK7X8EwJCyolcIuYpa614_tJ0H4OcVQu8/sendMessage?chat_id=939716992

Targets

    • Target

      Exloader.exe

    • Size

      161KB

    • MD5

      6c302eb7e13e60bd8f3cc67ef9b685dd

    • SHA1

      ba2f843319f06b8bfde22df5d865a25261749634

    • SHA256

      1ce0215bb48b46c40af305c5cfe0ef2cea705042da8e3421530beb709a294c08

    • SHA512

      52d8b8eb9123fb77e6a6ba5c91bd4df099def5e4f71cfc998c9be8f478f4bd64b3ea12d8eb87e105827c542dea5829b2fe49f468522d6de4cc146bd918032ad0

    • SSDEEP

      3072:ometwGYzolHdNYAOWbECrTG93M3ONGMa5:jTkXblc3M/3

    • Detect Xworm Payload

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty 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

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • 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.

    • Sets desktop wallpaper using registry

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

2
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Impact

Defacement

1
T1491

Tasks