General

  • Target

    XClient.exe

  • Size

    34KB

  • Sample

    241125-zrfwtssnfq

  • MD5

    c066e2162e9aa7dd672e4c20c1c8c9eb

  • SHA1

    20c061ca760ed127dd7c43ad5147064af4009d93

  • SHA256

    f2c139ededc6158ae672aa2ae484cbdf503517af131062ddd80a106dd7827557

  • SHA512

    aa75920ffef507b16ed23f7c4033374ec5b1ae56d9f6f32db6a0b632366a031280be4b6c2fed4ef895fda459899dccb62def861ffb90d287a23112a9d56a4adf

  • SSDEEP

    384:PxXv9qZ/QXokXcjlcTB+Gx//wD7rXVhLHzVdfgkBE2jHuh/58pkFyHBLTLZwYGoy:JXB2GxebHzDyCw/VFye9F+Ojh7yaEr4

Malware Config

Extracted

Family

xworm

Version

5.0

C2

cheflilou-43810.portmap.host:43810

Mutex

JQrIKWspeoVSCrcE

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

aes.plain

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1300923716687106088/zBYqs8nJ3MptGRgCn45okL0BWnQ0FdPIXStaaykk5DhZfBnHinW4M0Ve6U2CSPsMATf2

Targets

    • Target

      XClient.exe

    • Size

      34KB

    • MD5

      c066e2162e9aa7dd672e4c20c1c8c9eb

    • SHA1

      20c061ca760ed127dd7c43ad5147064af4009d93

    • SHA256

      f2c139ededc6158ae672aa2ae484cbdf503517af131062ddd80a106dd7827557

    • SHA512

      aa75920ffef507b16ed23f7c4033374ec5b1ae56d9f6f32db6a0b632366a031280be4b6c2fed4ef895fda459899dccb62def861ffb90d287a23112a9d56a4adf

    • SSDEEP

      384:PxXv9qZ/QXokXcjlcTB+Gx//wD7rXVhLHzVdfgkBE2jHuh/58pkFyHBLTLZwYGoy:JXB2GxebHzDyCw/VFye9F+Ojh7yaEr4

    • Detect Neshta payload

    • Detect Umbral payload

    • Detect Xworm Payload

    • Neshta

      Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

    • Neshta family

    • StormKitty

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

    • StormKitty payload

    • Stormkitty family

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

    • Umbral family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Command and Scripting Interpreter: PowerShell

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

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies system executable filetype association

    • Reads user/profile data of web browsers

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

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • 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 Enterprise v15

Tasks