General

  • Target

    skuld-main.exe

  • Size

    3.9MB

  • Sample

    240725-k7dn3szfmm

  • MD5

    aa6ab61ffec1cadb1f1fb9e409434d23

  • SHA1

    36d9bcca5162c35b0d12955c22bd913a91f20d61

  • SHA256

    fd27388ee0e064cc6c28557ced21dd581e98938449e1fa90e77de6961665f8db

  • SHA512

    f0017002feb946a901ac363e60f87ed175926992a4369a1fa1b59ccea1e36d46b5488a76c035566605f4388b015d4e9239c0d968c83b9399efd19e96818d0c52

  • SSDEEP

    98304:tx64YRFYsecOWle37HUjioDRo/Kjaf2kSsTUGqgytme:j2n2xtoDi/KxkSsoGxytD

Malware Config

Extracted

Family

skuld

C2

https://discord.com/api/webhooks/1265956205906628731/Y_WgTtyzaKLbQcu0jVUZk_qjmhbdb-o-FFozTVe1v1qJKkXESHWP7QheBcgcIowtOtQp

Targets

    • Target

      skuld-main.exe

    • Size

      3.9MB

    • MD5

      aa6ab61ffec1cadb1f1fb9e409434d23

    • SHA1

      36d9bcca5162c35b0d12955c22bd913a91f20d61

    • SHA256

      fd27388ee0e064cc6c28557ced21dd581e98938449e1fa90e77de6961665f8db

    • SHA512

      f0017002feb946a901ac363e60f87ed175926992a4369a1fa1b59ccea1e36d46b5488a76c035566605f4388b015d4e9239c0d968c83b9399efd19e96818d0c52

    • SSDEEP

      98304:tx64YRFYsecOWle37HUjioDRo/Kjaf2kSsTUGqgytme:j2n2xtoDi/KxkSsoGxytD

    • Skuld stealer

      An info stealer written in Go lang.

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • 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.

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

MITRE ATT&CK Enterprise v15

Tasks