General

  • Target

    Halkbank.exe

  • Size

    610KB

  • Sample

    221128-jd4gzafb57

  • MD5

    3b3a8ec84050161f9f4c9fcbbc51f72d

  • SHA1

    119b127ea5dcb49fe30ad6061e46fc0c3685cdeb

  • SHA256

    759b0bf83a7cbc7ab0e88fcf11428e36ee8f1e5b61b55344408829529c0d4210

  • SHA512

    93e0ab32482c74c86ef17de6a75dc12544a57a427942e854d84efbd964491a1a50b38aec22b141c2ebd819c96fc991ad595a1f52f008a829859b468f14ca6b0a

  • SSDEEP

    12288:2WO+/pbKbfhpdnkUjoHP6ktw6NSj0+7aPG8WDs:2W5bKNpdkUjIP6jZ0vmo

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5792996127:AAEo0wCCYZp60yQsf_X1P7t-T5AAK5KPYXY/

Targets

    • Target

      Halkbank.exe

    • Size

      610KB

    • MD5

      3b3a8ec84050161f9f4c9fcbbc51f72d

    • SHA1

      119b127ea5dcb49fe30ad6061e46fc0c3685cdeb

    • SHA256

      759b0bf83a7cbc7ab0e88fcf11428e36ee8f1e5b61b55344408829529c0d4210

    • SHA512

      93e0ab32482c74c86ef17de6a75dc12544a57a427942e854d84efbd964491a1a50b38aec22b141c2ebd819c96fc991ad595a1f52f008a829859b468f14ca6b0a

    • SSDEEP

      12288:2WO+/pbKbfhpdnkUjoHP6ktw6NSj0+7aPG8WDs:2W5bKNpdkUjIP6jZ0vmo

    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

    • 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 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 Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks