General

  • Target

    2da9543a96dc5ca68af4c2e095e21f49

  • Size

    1.7MB

  • Sample

    221125-dz7hvsha39

  • MD5

    2da9543a96dc5ca68af4c2e095e21f49

  • SHA1

    2b48017b795efe9c9dc0f2df7ae8bb79141506c5

  • SHA256

    e7be55c53cc03e17484068b1f69f6b2091f9cfe105480b9595f30bb557112f14

  • SHA512

    e22e59c80641929d192493b8bd000fbf92c063b592d6725d3f85c276eaaa5bfb72e350eb7e42c88d8daff486cc188ab430647237dc7ececf7d75d03c3dff62b2

  • SSDEEP

    12288:QnjoopN3RLxQLVX9Kr09aFwSVnWZQzjFeM6DJOjB9sTTHy0y0UK0jWSJSmQhVW8K:kRLxQLJ9KvVnYQb6VOwyrJuWXS5

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5655543251:AAF6zs8TWZ5wmyQhXrUZEpQjh6VaOy-aYoQ/

Extracted

Family

wshrat

C2

http://snkcyp.duckdns.org:44147

Targets

    • Target

      2da9543a96dc5ca68af4c2e095e21f49

    • Size

      1.7MB

    • MD5

      2da9543a96dc5ca68af4c2e095e21f49

    • SHA1

      2b48017b795efe9c9dc0f2df7ae8bb79141506c5

    • SHA256

      e7be55c53cc03e17484068b1f69f6b2091f9cfe105480b9595f30bb557112f14

    • SHA512

      e22e59c80641929d192493b8bd000fbf92c063b592d6725d3f85c276eaaa5bfb72e350eb7e42c88d8daff486cc188ab430647237dc7ececf7d75d03c3dff62b2

    • SSDEEP

      12288:QnjoopN3RLxQLVX9Kr09aFwSVnWZQzjFeM6DJOjB9sTTHy0y0UK0jWSJSmQhVW8K:kRLxQLJ9KvVnYQb6VOwyrJuWXS5

    • AgentTesla

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

    • WSHRAT

      WSHRAT is a variant of Houdini worm and has vbs and js variants.

    • WSHRAT payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Checks computer location settings

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

    • Drops startup file

    • Loads dropped DLL

    • 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

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks