General

  • Target

    dubi.exe

  • Size

    698KB

  • Sample

    210309-sdk81n52ga

  • MD5

    839609b011f03a293a0573ea5fb1277e

  • SHA1

    fe48ac0a84e79bc2dd0024e55a62e86b077f8c12

  • SHA256

    d466ef9698569363af4f08b64235817c7838c726c1faee300582aab3d90f5683

  • SHA512

    526f6345e367950bc775213663fd68bd7bae2b82c71df70e8589dccc173da66af0171183c4abc4a102e45e151453ff8a8d67c2e4c8fcf72c54d85def22d37ac4

Malware Config

Targets

    • Target

      dubi.exe

    • Size

      698KB

    • MD5

      839609b011f03a293a0573ea5fb1277e

    • SHA1

      fe48ac0a84e79bc2dd0024e55a62e86b077f8c12

    • SHA256

      d466ef9698569363af4f08b64235817c7838c726c1faee300582aab3d90f5683

    • SHA512

      526f6345e367950bc775213663fd68bd7bae2b82c71df70e8589dccc173da66af0171183c4abc4a102e45e151453ff8a8d67c2e4c8fcf72c54d85def22d37ac4

    • 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 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

4
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

4
T1005

Tasks