General

  • Target

    4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d

  • Size

    2.0MB

  • Sample

    240523-a6tnssfe67

  • MD5

    7ca41de791791686a7161f1fb243ef60

  • SHA1

    30c5de84df33ae833cec1f990c7567b4abd140a1

  • SHA256

    4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d

  • SHA512

    b181fc800e12eb597791bc10beb42b206f6fbe133427120750f219b3eee2bc8e1c8e908f2b75d09358b1740e844e9fadbe35c5d28de5738fc7f12fb58d4dc8b9

  • SSDEEP

    49152:7QzHt472DIJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtCtIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d

    • Size

      2.0MB

    • MD5

      7ca41de791791686a7161f1fb243ef60

    • SHA1

      30c5de84df33ae833cec1f990c7567b4abd140a1

    • SHA256

      4263bde1b23b0124b475c08c4748daeb1b01eaf7d003b9450c69cdee25549d8d

    • SHA512

      b181fc800e12eb597791bc10beb42b206f6fbe133427120750f219b3eee2bc8e1c8e908f2b75d09358b1740e844e9fadbe35c5d28de5738fc7f12fb58d4dc8b9

    • SSDEEP

      49152:7QzHt472DIJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtCtIuoITsdZ

    • 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 Matrix ATT&CK v13

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

4
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

4
T1005

Tasks