General

  • Target

    Vietcombank_Ban Sao Thanh Toan_Pdf.exe

  • Size

    23KB

  • Sample

    230113-sdctpahg45

  • MD5

    357dc7fc40a74f7db969a2bd89188d6d

  • SHA1

    4afed0569b36c95f96bac367232cae88eb201e64

  • SHA256

    bc6b7187bcc579a4fd0e7ffc54bb1a5fb9fa47a3d781bce55a8c4d9ba4df0139

  • SHA512

    da23f8e01dfd78874bd274ae7cca8593ca7be0c12d3de0061630e6c737cbc87433451536ed992491568221b82548eff353bc19c7e3e6383a49d3e6a0ae261c8a

  • SSDEEP

    96:P99U6k5sBsdf2XLGMRE7ng2deOFVkAwGuTFKfEPfPNAgARricsGb7kvrBzNt:Pb6KLGMWkOMAluTFCEvNesG+D

Malware Config

Extracted

Family

purecrypter

C2

http://savory.com.bd/sav/Ezxucmj.bmp

Targets

    • Target

      Vietcombank_Ban Sao Thanh Toan_Pdf.exe

    • Size

      23KB

    • MD5

      357dc7fc40a74f7db969a2bd89188d6d

    • SHA1

      4afed0569b36c95f96bac367232cae88eb201e64

    • SHA256

      bc6b7187bcc579a4fd0e7ffc54bb1a5fb9fa47a3d781bce55a8c4d9ba4df0139

    • SHA512

      da23f8e01dfd78874bd274ae7cca8593ca7be0c12d3de0061630e6c737cbc87433451536ed992491568221b82548eff353bc19c7e3e6383a49d3e6a0ae261c8a

    • SSDEEP

      96:P99U6k5sBsdf2XLGMRE7ng2deOFVkAwGuTFKfEPfPNAgARricsGb7kvrBzNt:Pb6KLGMWkOMAluTFCEvNesG+D

    • PureCrypter

      PureCrypter is a .NET malware loader first seen in early 2021.

    • Checks computer location settings

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

    • 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 Microsoft Outlook profiles

    • Adds Run key to start application

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks