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General

  • Target

    Bald.Win_New_Temp_Swoofer.exe

  • Size

    4.6MB

  • Sample

    240615-z1dstsvakd

  • MD5

    76761b94d0187562e9acc8feb0d36111

  • SHA1

    40d118971e1c9e1e96264b23772ba0ec5e159a0c

  • SHA256

    d02f513e1673e5012e916fad43e0672ee0ff9cdfbc0733401b9b8fd4bd88d1f3

  • SHA512

    d48731994aae2c6f7b86edf22f843913568ade13e482154b71798c7b37b62e617c0f6960b3c9ba8db5c70d173ff0ef864f9c2467d7db6fb5d617a88a301c1423

  • SSDEEP

    98304:L/hllE2G7C2b9cH1UWzfW4Npy2K176ylIqdF8J8mK98wbRNVGllXLTPhCPzH00pE:LxlCcH1BSBvrltsY9jDqXLVaL7u

Malware Config

Targets

    • Target

      Bald.Win_New_Temp_Swoofer.exe

    • Size

      4.6MB

    • MD5

      76761b94d0187562e9acc8feb0d36111

    • SHA1

      40d118971e1c9e1e96264b23772ba0ec5e159a0c

    • SHA256

      d02f513e1673e5012e916fad43e0672ee0ff9cdfbc0733401b9b8fd4bd88d1f3

    • SHA512

      d48731994aae2c6f7b86edf22f843913568ade13e482154b71798c7b37b62e617c0f6960b3c9ba8db5c70d173ff0ef864f9c2467d7db6fb5d617a88a301c1423

    • SSDEEP

      98304:L/hllE2G7C2b9cH1UWzfW4Npy2K176ylIqdF8J8mK98wbRNVGllXLTPhCPzH00pE:LxlCcH1BSBvrltsY9jDqXLVaL7u

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

    • 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 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

    • Loads dropped DLL

    • 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.

    • Checks whether UAC is enabled

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks