General

  • Target

    skuld.exe

  • Size

    9.5MB

  • Sample

    240725-nnvp2azana

  • MD5

    1cbc37e2d62bf4a9c20d839366aa91ad

  • SHA1

    eef6957596e8d4d08e56f6fb3e72f03c94b1afe2

  • SHA256

    d181149f2d3617bdec668fde95272b8db829b46a0a52328a7a325cf4d1ce84d5

  • SHA512

    30b6df8f0a23160d9a7c108427d94da293d725521e7678244f22ac681bac1d4f085da632de98ee68277ec8382479daf721365eab2c00202b1a98fab977194772

  • SSDEEP

    98304:90W/mwd8vYm5ics/QW6cE1KcD/EnZPgIWJFbm:xPuvYLT6cE1VDcnMFbm

Malware Config

Extracted

Family

skuld

C2

https://discord.com/api/webhooks/1258409018213269555/uCN0wtYxZNzT5QyuDUtPXUdeYkj3blj_Ed2Glmr-iuRbwAZBTP8DYWusQH-_Wx4qwu1t

Targets

    • Target

      skuld.exe

    • Size

      9.5MB

    • MD5

      1cbc37e2d62bf4a9c20d839366aa91ad

    • SHA1

      eef6957596e8d4d08e56f6fb3e72f03c94b1afe2

    • SHA256

      d181149f2d3617bdec668fde95272b8db829b46a0a52328a7a325cf4d1ce84d5

    • SHA512

      30b6df8f0a23160d9a7c108427d94da293d725521e7678244f22ac681bac1d4f085da632de98ee68277ec8382479daf721365eab2c00202b1a98fab977194772

    • SSDEEP

      98304:90W/mwd8vYm5ics/QW6cE1KcD/EnZPgIWJFbm:xPuvYLT6cE1VDcnMFbm

    • 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

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

    • Drops file in Drivers directory

    • 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