General

  • Target

    f94e76f3413533466d5381a1fcb5fdda_JaffaCakes118

  • Size

    797KB

  • Sample

    240419-czmm1sec69

  • MD5

    f94e76f3413533466d5381a1fcb5fdda

  • SHA1

    42b1bf1036be4de18827d60a39e1894a7e28b334

  • SHA256

    b9cecac02570aecc4fec0f0266fa1fae40790bea5490f33a4b6486bce0cb0928

  • SHA512

    2dc46df45b4aea02158c6298127b9c36d1be9cdb6d43529f4300d090053cb82b916a2e426f959dcf73a941f1bc2ddc5d0471f41757329264611eb8e4cd5b15cf

  • SSDEEP

    24576:Gzqd9qbNXVIDcg/kEyYiMeGHEp21HC2r1:yiqblVI7/kEyWt1i2r

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    server1.ahost.uz
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    N(8=3n[Shp7i

Targets

    • Target

      f94e76f3413533466d5381a1fcb5fdda_JaffaCakes118

    • Size

      797KB

    • MD5

      f94e76f3413533466d5381a1fcb5fdda

    • SHA1

      42b1bf1036be4de18827d60a39e1894a7e28b334

    • SHA256

      b9cecac02570aecc4fec0f0266fa1fae40790bea5490f33a4b6486bce0cb0928

    • SHA512

      2dc46df45b4aea02158c6298127b9c36d1be9cdb6d43529f4300d090053cb82b916a2e426f959dcf73a941f1bc2ddc5d0471f41757329264611eb8e4cd5b15cf

    • SSDEEP

      24576:Gzqd9qbNXVIDcg/kEyYiMeGHEp21HC2r1:yiqblVI7/kEyWt1i2r

    • AgentTesla

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

    • AgentTesla payload

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • 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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

4
T1005

Email Collection

1
T1114

Tasks