General

  • Target
    lasttry.exe
  • Size 8.6MB
  • Sample260621-24v8dsfz3j
  • SHA256 f1ff6ec9082da333b2f430ac89e9124ccbea33057098d2a6318cb24a88567be0
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • remus_stealer

C2
  • http://anglhw.xyz:4964

  • http://myrtler.biz:9549

  • http://carogra.biz:4219

Targets

    • Target
      lasttry.exe
    • Size 8.6MB
    • SHA256 f1ff6ec9082da333b2f430ac89e9124ccbea33057098d2a6318cb24a88567be0
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects Remus stealer

    • Family: Remus

      Remus is a stealer written in C++.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Downloads MZ/PE file

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • Executes dropped EXE

    • 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.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • 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.

    • Checks whether UAC is enabled

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • 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 v16

Tasks