General

  • Target

    512b22a76932a80652eb16dfadd690344582d4d9.exe

  • Size

    749KB

  • Sample

    210608-346dhc29ka

  • MD5

    8356744bdb06ed38348f451fd91ac34a

  • SHA1

    512b22a76932a80652eb16dfadd690344582d4d9

  • SHA256

    11fde3c052cc436dae10fa4c0b1821406d091cebb227a832a4f4c4101f21ffb4

  • SHA512

    2dd6d06fc9613e7feb147d8f631ae62d9b83555a79349b6d2a161ff21253f478e06534c1eb685cfadc604010f75f6235ca2dd06bee165936999bc38e7e2069f8

Malware Config

Extracted

Family

vidar

Version

39.3

Botnet

915

C2

https://bandakere.tumblr.com

Attributes
  • profile_id

    915

Targets

    • Target

      512b22a76932a80652eb16dfadd690344582d4d9.exe

    • Size

      749KB

    • MD5

      8356744bdb06ed38348f451fd91ac34a

    • SHA1

      512b22a76932a80652eb16dfadd690344582d4d9

    • SHA256

      11fde3c052cc436dae10fa4c0b1821406d091cebb227a832a4f4c4101f21ffb4

    • SHA512

      2dd6d06fc9613e7feb147d8f631ae62d9b83555a79349b6d2a161ff21253f478e06534c1eb685cfadc604010f75f6235ca2dd06bee165936999bc38e7e2069f8

    • ElysiumStealer

      ElysiumStealer (previously known as ZeromaxStealer) is an info stealer that can steal login credentials for various accounts.

    • PlugX

      PlugX is a RAT (Remote Access Trojan) that has been around since 2008.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Checks for common network interception software

      Looks in the registry for tools like Wireshark or Fiddler commonly used to analyze network activity.

    • Vidar Stealer

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • VMProtect packed file

      Detects executables packed with VMProtect commercial packer.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • 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

    • 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.

    • Drops desktop.ini file(s)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Program crash

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks