General

  • Target

    Solara.exe

  • Size

    71KB

  • Sample

    240615-rp5heatdjc

  • MD5

    f5fd15982c8d5ccb2be7c847add858be

  • SHA1

    308da186cbbc2280de4505d8bf1aa9d6a8890aa8

  • SHA256

    9fa1e1e925022da435960561a7171033c1ed011f74249b0957e389f1da4a1511

  • SHA512

    8624efe28384a20f44cb563b44f609fa74a5c408d88588e1e3f60c308693829eda071c93f82b95f16232f6b719fda845b826db66afc6fa38cce753833a63000a

  • SSDEEP

    1536:YTq1Yxxd38u5qnQHl0lc1+vhbqL+xKw6MTlOxNiXOOC4Z:Mpdilc1+vhbqJuTlOxKOOjZ

Malware Config

Extracted

Family

xworm

C2

2.tcp.eu.ngrok.io:18710

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

Targets

    • Target

      Solara.exe

    • Size

      71KB

    • MD5

      f5fd15982c8d5ccb2be7c847add858be

    • SHA1

      308da186cbbc2280de4505d8bf1aa9d6a8890aa8

    • SHA256

      9fa1e1e925022da435960561a7171033c1ed011f74249b0957e389f1da4a1511

    • SHA512

      8624efe28384a20f44cb563b44f609fa74a5c408d88588e1e3f60c308693829eda071c93f82b95f16232f6b719fda845b826db66afc6fa38cce753833a63000a

    • SSDEEP

      1536:YTq1Yxxd38u5qnQHl0lc1+vhbqL+xKw6MTlOxNiXOOC4Z:Mpdilc1+vhbqJuTlOxKOOjZ

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • 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.

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

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