General

  • Target

    SecuriteInfo.com.Trojan.Siggen31.9411.1178.4099.exe

  • Size

    7.8MB

  • Sample

    250420-kjtqdssns7

  • MD5

    a5d2cfff273ff2896651620edbfbf2ff

  • SHA1

    eedcc55e4d6132e933b83e78ec0f6b27920706f7

  • SHA256

    c7f5161e69a1f7de4f87d1eaa680f045e84869d888c9c68c1ffc4ec6d1a95207

  • SHA512

    6cf7a9448914ecf029d9a02c7d084f1f44c08d54fe2ae8f59198544ef22a11f7a8aa1f403f1d3d33cc363bc8cbe43f50177c6dfd4b3cdfdd55086738961e0464

  • SSDEEP

    98304:fyfoRvySuOauKO0dc9MxBhceGJ8U3IpaGmTU:aAh+cu3hceq8U3OaGs

Malware Config

Extracted

Family

xworm

C2

89.39.121.169:9000

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1333154187097411584/digMymw3Ra3L6I5D8zGVEzUUedj3jMIaMra4MYEhFwT7XO6iinul-zQfNDxgOfoV2lrG

Targets

    • Target

      SecuriteInfo.com.Trojan.Siggen31.9411.1178.4099.exe

    • Size

      7.8MB

    • MD5

      a5d2cfff273ff2896651620edbfbf2ff

    • SHA1

      eedcc55e4d6132e933b83e78ec0f6b27920706f7

    • SHA256

      c7f5161e69a1f7de4f87d1eaa680f045e84869d888c9c68c1ffc4ec6d1a95207

    • SHA512

      6cf7a9448914ecf029d9a02c7d084f1f44c08d54fe2ae8f59198544ef22a11f7a8aa1f403f1d3d33cc363bc8cbe43f50177c6dfd4b3cdfdd55086738961e0464

    • SSDEEP

      98304:fyfoRvySuOauKO0dc9MxBhceGJ8U3IpaGmTU:aAh+cu3hceq8U3OaGs

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Dcrat family

    • Detect Umbral payload

    • Detect Xworm Payload

    • 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

    • Xmrig family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner payload

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Creates new service(s)

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Stops running service(s)

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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.

    • Power Settings

      powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v16

Tasks