General

  • Target

    dubi.exew

  • Size

    740KB

  • Sample

    210310-4avca6ck3n

  • MD5

    2301df3722a9635294c12b9208f5a155

  • SHA1

    fb70e885511d04c3bd07e20d5adb24c70a92f440

  • SHA256

    5867305033836997a9a7a9e61ae8a6c1eb60ae37a490a3dc86c643a67dc3ef58

  • SHA512

    1ce4138c98ea55fb4a024ebe8214b6f620f9995a85b9582df187c3c4781661b85ed36c32f9e8a50623944e5bf8531a5771c985d29add4eb906dac08f8ae45048

Malware Config

Targets

    • Target

      dubi.exew

    • Size

      740KB

    • MD5

      2301df3722a9635294c12b9208f5a155

    • SHA1

      fb70e885511d04c3bd07e20d5adb24c70a92f440

    • SHA256

      5867305033836997a9a7a9e61ae8a6c1eb60ae37a490a3dc86c643a67dc3ef58

    • SHA512

      1ce4138c98ea55fb4a024ebe8214b6f620f9995a85b9582df187c3c4781661b85ed36c32f9e8a50623944e5bf8531a5771c985d29add4eb906dac08f8ae45048

    • Taurus Stealer

      Taurus is an infostealer first seen in June 2020.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • 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.

    • Accesses 2FA software files, possible credential harvesting

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

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

    • 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 Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

5
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

5
T1005

Tasks