General

  • Target

    3b8d8d08318bddad928f55c81d4f0d7e7188ce9658e25110f4e0d3e74256d8a4

  • Size

    787KB

  • Sample

    220511-bb3tnacbd8

  • MD5

    73485f0a753288ff5f7b4a62ecbf051d

  • SHA1

    cf9e21945490fb9a64d5414d0683da0b770059b0

  • SHA256

    3b8d8d08318bddad928f55c81d4f0d7e7188ce9658e25110f4e0d3e74256d8a4

  • SHA512

    ecd43dd38927343c458f10ef5fa560560f73f59faf7fcf0708ea8422c1551539a3aa781342f24bdeb83fb47b9c13e06eb7e1e546a845783ec3b7a16bd97ecf70

Malware Config

Targets

    • Target

      3b8d8d08318bddad928f55c81d4f0d7e7188ce9658e25110f4e0d3e74256d8a4

    • Size

      787KB

    • MD5

      73485f0a753288ff5f7b4a62ecbf051d

    • SHA1

      cf9e21945490fb9a64d5414d0683da0b770059b0

    • SHA256

      3b8d8d08318bddad928f55c81d4f0d7e7188ce9658e25110f4e0d3e74256d8a4

    • SHA512

      ecd43dd38927343c458f10ef5fa560560f73f59faf7fcf0708ea8422c1551539a3aa781342f24bdeb83fb47b9c13e06eb7e1e546a845783ec3b7a16bd97ecf70

    • Taurus Stealer

      Taurus is an infostealer first seen in June 2020.

    • Taurus Stealer Payload

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

    • Checks BIOS information in registry

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

    • Deletes itself

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Reads user/profile data of web browsers

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

    • Accesses 2FA software files, possible credential harvesting

    • Checks installed software on the system

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

1
T1082

Collection

Data from Local System

2
T1005

Tasks