General

  • Target

    news.exe

  • Size

    846KB

  • Sample

    210630-bl4wsxc27a

  • MD5

    d91bc8da2d1a86964430d08128cb0387

  • SHA1

    788516914feabc1f7e5b14cc4b138167ae5e84e4

  • SHA256

    d5872f6fcbcbcaf395e7986543e55b68bdd08b56d082f979bfd0a51998a795e3

  • SHA512

    1ff1451b624fa2919c434cf66284cffaad0f137d6a618b7cdcb91746817104cc2d162a83f879641181dcbf3a472d823507764b8eadaedf4f393a592b7c302e03

Malware Config

Extracted

Family

vidar

Version

39.4

Botnet

890

C2

https://sergeevih43.tumblr.com

Attributes
  • profile_id

    890

Targets

    • Target

      news.exe

    • Size

      846KB

    • MD5

      d91bc8da2d1a86964430d08128cb0387

    • SHA1

      788516914feabc1f7e5b14cc4b138167ae5e84e4

    • SHA256

      d5872f6fcbcbcaf395e7986543e55b68bdd08b56d082f979bfd0a51998a795e3

    • SHA512

      1ff1451b624fa2919c434cf66284cffaad0f137d6a618b7cdcb91746817104cc2d162a83f879641181dcbf3a472d823507764b8eadaedf4f393a592b7c302e03

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Vidar Stealer

    • Downloads MZ/PE file

    • 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.

    • Accesses 2FA software files, possible credential harvesting

    • Accesses cryptocurrency files/wallets, 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 SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Tasks