General

  • Target

    Back-Soyer.exe

  • Size

    28.5MB

  • Sample

    240920-stw79stbnh

  • MD5

    9d3d31bff67dd9d59dfa29a20b5f7519

  • SHA1

    26ff73ff1fcb676e3bdba0ab521cb780f7933ecb

  • SHA256

    726d381ab9f30dbf5aa49cb4fe805d580e3547683617f5ef985500eeb7340ae9

  • SHA512

    414004a9eeb3516b0e17ececb7fc1dc8dc521eb2d1fada915cea929a0fe7c0075a40482444b5076cf2b657aab76dc7c5da9b290fe54b39682a614cac9c13be63

  • SSDEEP

    786432:49ef7yJbTiumfSM2ocESWqEIBBOqWEXjQA:awmxTivfSIfqrBBmEzQA

Malware Config

Extracted

Family

mercurialgrabber

C2

https://ptb.discord.com/api/webhooks/895223301373300776/4LFPS81olSXc9Stl05N1nV_de5bp6BZLZwfYl5WydodJ9w8AtEOpBRJrAJDKDvxbtGHz

Targets

    • Target

      Back-Soyer.exe

    • Size

      28.5MB

    • MD5

      9d3d31bff67dd9d59dfa29a20b5f7519

    • SHA1

      26ff73ff1fcb676e3bdba0ab521cb780f7933ecb

    • SHA256

      726d381ab9f30dbf5aa49cb4fe805d580e3547683617f5ef985500eeb7340ae9

    • SHA512

      414004a9eeb3516b0e17ececb7fc1dc8dc521eb2d1fada915cea929a0fe7c0075a40482444b5076cf2b657aab76dc7c5da9b290fe54b39682a614cac9c13be63

    • SSDEEP

      786432:49ef7yJbTiumfSM2ocESWqEIBBOqWEXjQA:awmxTivfSIfqrBBmEzQA

    • Mercurial Grabber Stealer

      Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Looks for VirtualBox Guest Additions in registry

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • UPX packed file

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

    • 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.

MITRE ATT&CK Enterprise v15

Tasks