General

  • Target
    source code of carbanak backdoor discovered_patched.exe
  • Size 32.5MB
  • Sample260306-ncs23acy6k
  • SHA256 7c90cf45e068bd9b227b648cda33de1bc0e5bcaa4c3a0ff74147851458f13d32
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      source code of carbanak backdoor discovered_patched.exe
    • Size 32.5MB
    • SHA256 7c90cf45e068bd9b227b648cda33de1bc0e5bcaa4c3a0ff74147851458f13d32
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Xmrig family

    • xmrig

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

    • XMRig Miner payload

    • Command and Scripting Interpreter: PowerShell

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

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Creates new service(s)

    • 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.

    • Stops running service(s)

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • 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