General

  • Target
    OurNew.exe
  • Size 6.5MB
  • Sample261108-peatyazyft
  • SHA256 b139ad03c7f1b95d303b00fb0264897e551f5350fba7fe84a8a75569cbb3d33c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • stealc

Botnet
  • saif

C2
  • http://176.65.144.16

rc4.traffic_key
rc4.plain

Targets

    • Target
      OurNew.exe
    • Size 6.5MB
    • SHA256 b139ad03c7f1b95d303b00fb0264897e551f5350fba7fe84a8a75569cbb3d33c
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects Stealc stealer Version 3

    • Family: Stealc

      Stealc is an infostealer written in C++.

    • 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

    • 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.

    • Power Settings

      powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

    • 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