General

  • Target

    test.exe

  • Size

    231KB

  • Sample

    250322-g2k97ay1ft

  • MD5

    79dbb36ad4aa16d2ba9b0dc335c29663

  • SHA1

    2806cf13d56759fe3015c7b7ba2b4f0439dce3f0

  • SHA256

    fd88f68339f4a1f2f3892667bd5026d60a327d7f3ebe492a09901aa566bc66f5

  • SHA512

    1ae155087e5c1a2c8fc9f44eb3c43bcf4d0f4b4d4a5b56f8b49140db51e1f4a488d2ea917c0731ffb2f182401dbe18682d5571ca0fb09e9e67622bd017bb61f7

  • SSDEEP

    6144:9loZMprIkd8g+EtXHkv/iD4iXptbhS6FgAxDeebVfBb8e1m3oi:foZCL+EP8iXptbhS6FgAxDeebVxa

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1351374291261718571/m5LIIWlqorXnzT48pitTuxfMUMetQJ52rJhbTqyDfIywVmJ3ZnM3iUIHTa3R0uTiMSFB

Targets

    • Target

      test.exe

    • Size

      231KB

    • MD5

      79dbb36ad4aa16d2ba9b0dc335c29663

    • SHA1

      2806cf13d56759fe3015c7b7ba2b4f0439dce3f0

    • SHA256

      fd88f68339f4a1f2f3892667bd5026d60a327d7f3ebe492a09901aa566bc66f5

    • SHA512

      1ae155087e5c1a2c8fc9f44eb3c43bcf4d0f4b4d4a5b56f8b49140db51e1f4a488d2ea917c0731ffb2f182401dbe18682d5571ca0fb09e9e67622bd017bb61f7

    • SSDEEP

      6144:9loZMprIkd8g+EtXHkv/iD4iXptbhS6FgAxDeebVfBb8e1m3oi:foZCL+EP8iXptbhS6FgAxDeebVxa

    • Detect Umbral payload

    • Umbral

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

    • Umbral family

    • Command and Scripting Interpreter: PowerShell

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

    • Reads user/profile data of web browsers

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

    • 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.

MITRE ATT&CK Enterprise v15

Tasks