Extracted

• • Target
    wd4yvmmvpxauc1uk.exe
  • Size 528KB
  • SHA256 7f6ec3989b9041e851f2a3411946e45b50d97cce8cca7636e4a7f2669ae623ac
  • MD5 f502ad8a3fd95a500014c65105b279ad
  • SHA1 f08d93262719a6b6bbc8316ee872418dffebf72e
  • SHA512 757dbf47ac0e360e1e5933e982a44d27347f28fbd6f7fc9501cbc03ff0dd706e94526e15c72cccbb08c827e9dceb0a2762b65f7237fe288f71845ffeac8c4315
  • SSDEEP 6144:dDCzVb6f7tRti16waCpVDYzD7qt/A4nJKVvFO4+VnfqALRxSLCfn/TyUPbsNzw1L:dN7ts6wfpq7WAh+nBHQdU05yR
  • TLSH
    T18FB43B143FA98A08E480157E454E1608DBDED2F266327343370AEF664D459DEEE2D3EB
  • MD5 SHA1 SHA512 SSDEEP TLSH

  Score

  10^/10

  collectioncredential_accessdefense_evasiondiscoveryevasionexecutionumbralxorium_stealerpersistenceprivilege_escalationransomwarespywarestealer

  • Detects Umbral payload

  • Detects XoriumStealer payload

  • Family: Umbral

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

    stealerumbral

  • Family: XoriumStealer

    XoriumStealer is an information stealer written in C#.

    stealerxorium_stealer

  • Modifies WinLogon for persistence

    persistence

  • Modifies boot configuration data using bcdedit

    ransomwareevasion

  • Renames multiple (8137) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware

  • Command and Scripting Interpreter: PowerShell

    Using powershell.exe command.

    execution

  • Disables RegEdit via registry modification

    defense_evasion

  • Disables Task Manager via registry modification

    defense_evasion

  • Disables one or more Microsoft Defender components

    Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.

    defense_evasion

  • Drops file in Drivers directory

  • Event Triggered Execution: Image File Execution Options Injection

    persistence

  • Checks computer location settings

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

  • Credentials from Password Stores: Windows Credential Manager

    Suspicious access to Credentials History.

    credential_accessstealer

  • Disables automatic submission of suspicious files to Microsoft by Windows Defender

    Uses the Powershell Set-MpPreference cmdlet to prevent Windows Defender from automatically sending files to Microsoft for analysis.

    defense_evasion

  • Executes dropped EXE

  • Impair Defenses: Safe Mode Boot

    defense_evasion

  • Loads dropped DLL

  • Reads WinSCP keys stored on the system

    Tries to access WinSCP stored sessions.

    spywarestealer

  • Reads user/profile data of web browsers

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

    spywarestealer

  • Accesses Microsoft Outlook profiles

    collection

  • Adds Run key to start application

    persistence

  • 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.

  • Looks up external IP address via web service

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory

  • Hide Artifacts: Hidden Files and Directories

    defense_evasion
  behavioral1