General

  • Target

    bed1041a59bd3a02094cf5a3febe69c394028933497c676c32f1bc947325784c

  • Size

    1.9MB

  • Sample

    240528-aesx7agc68

  • MD5

    04667d2fd34570b426e85b84eeadaaa7

  • SHA1

    b84156a0820e19b12935d519c7dc66abc9455df6

  • SHA256

    bed1041a59bd3a02094cf5a3febe69c394028933497c676c32f1bc947325784c

  • SHA512

    05b218111aacdf3234893972a8dc6465b6fbe73d2961049fbab03709e9b1d7b6e6a36aca6b4495f84fd33f1047aa66400092298a733d376f09388c7d8ff56768

  • SSDEEP

    49152:CdKfTn6vaJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnhtIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199689717899

https://t.me/copterwin

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Targets

    • Target

      bed1041a59bd3a02094cf5a3febe69c394028933497c676c32f1bc947325784c

    • Size

      1.9MB

    • MD5

      04667d2fd34570b426e85b84eeadaaa7

    • SHA1

      b84156a0820e19b12935d519c7dc66abc9455df6

    • SHA256

      bed1041a59bd3a02094cf5a3febe69c394028933497c676c32f1bc947325784c

    • SHA512

      05b218111aacdf3234893972a8dc6465b6fbe73d2961049fbab03709e9b1d7b6e6a36aca6b4495f84fd33f1047aa66400092298a733d376f09388c7d8ff56768

    • SSDEEP

      49152:CdKfTn6vaJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnhtIuoITsdZ

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • 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 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 Enterprise v15

Tasks