Extracted

• • Target
    BlueStacks_5.22.130.exe
  • Size 3.4MB
  • SHA256 2c617a8f47076ddb46f41e94d8590e12c1b4e162809bba254b77ed490dc980cc
  • MD5 786fa6d28709d122991844c893eddbad
  • SHA1 70c79f0bfd6315d15439e75cd522d005c81b4695
  • SHA512 9d7491aae27cb749fbe6fdae50e459aac2f9b4fd2c3408a188470ead4e14e3b8b32cbfbb83b0ba77000849e952e63632fd43ecf46853766f11a13096e6a50144
  • SSDEEP 49152:AztCXWPS/m3q64LJ9QNXzbXYUjP0CNfCW:AztCXWPSm3dDbXUCcW
  • TLSH
    T1ABF53E98B28AD3E2C11ED17E90735E8A3D779AE46317C205DA0E3797FE703A31D19249
  • MD5 SHA1 SHA512 SSDEEP TLSH

  Score

  10^/10

  defense_evasiondiscoveryexecutionumbralpersistenceprivilege_escalationstealer

  • Detects Umbral payload

  • Family: Umbral

    Umbral stealer is an open-source modular stealer written in C#.

    stealerumbral

  • Downloads MZ/PE file

  • Modifies Windows Firewall

    defense_evasion

  • Checks computer location settings

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

  • Executes dropped EXE

  • Loads dropped DLL

  • Checks installed software on the system

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

    discovery

  • Contacts third-party web service commonly abused for C2

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

  • 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.

    discovery

  • Executes a VBScript file via the Windows Script Host.

    execution
  behavioral1behavioral2