General

  • Target

    62a41275ae9a811e0315b367afd7572a2ccfec5d54bb86e50e2c428711a0b934

  • Size

    2.0MB

  • Sample

    240522-318vraeb35

  • MD5

    27ee06870d559a2918a05bb2560692d2

  • SHA1

    adc60fac58de0b87643cbb3bb256df474fd8de1b

  • SHA256

    62a41275ae9a811e0315b367afd7572a2ccfec5d54bb86e50e2c428711a0b934

  • SHA512

    b8067d870f80e33cba9b44b35f8d3f682fbbebd71815493776c282733ebce38fc34fbccaa6d4447b967d7c230470aa7e62b50bb6f6ecb10164b405b15d51d488

  • SSDEEP

    49152:7QzHt472DXJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHt9tIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      62a41275ae9a811e0315b367afd7572a2ccfec5d54bb86e50e2c428711a0b934

    • Size

      2.0MB

    • MD5

      27ee06870d559a2918a05bb2560692d2

    • SHA1

      adc60fac58de0b87643cbb3bb256df474fd8de1b

    • SHA256

      62a41275ae9a811e0315b367afd7572a2ccfec5d54bb86e50e2c428711a0b934

    • SHA512

      b8067d870f80e33cba9b44b35f8d3f682fbbebd71815493776c282733ebce38fc34fbccaa6d4447b967d7c230470aa7e62b50bb6f6ecb10164b405b15d51d488

    • SSDEEP

      49152:7QzHt472DXJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHt9tIuoITsdZ

    • 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