General

  • Target

    141c83addbfb33e4869c7f7a384ac0d5_JaffaCakes118

  • Size

    963KB

  • Sample

    240329-a1e88ade42

  • MD5

    141c83addbfb33e4869c7f7a384ac0d5

  • SHA1

    1c413434a2d683dd6ab06c2b0b95eea58639731c

  • SHA256

    cd3bb572b0caf1a700c8c68c6d2638680345ec0f87fbe8024b60d3e405d6561d

  • SHA512

    132360f7fd7a6cf75791dd9787ecc65204f4066f20e3995300ee654f30a1b9a14f694b11b553c04eae906e15b64364df76b62be69009767761d1798ec06ecc18

  • SSDEEP

    12288:KoUOHKWg5pj3lnY0hES5k79BA95e0Mp6IFsgJinHI0:Kovqj60hqDAK0rImgJino0

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.sharpn.com
  • Port:
    587
  • Username:
    export@sharpn.com
  • Password:
    )^$(6$n3eSDoq@@##$$###

Targets

    • Target

      141c83addbfb33e4869c7f7a384ac0d5_JaffaCakes118

    • Size

      963KB

    • MD5

      141c83addbfb33e4869c7f7a384ac0d5

    • SHA1

      1c413434a2d683dd6ab06c2b0b95eea58639731c

    • SHA256

      cd3bb572b0caf1a700c8c68c6d2638680345ec0f87fbe8024b60d3e405d6561d

    • SHA512

      132360f7fd7a6cf75791dd9787ecc65204f4066f20e3995300ee654f30a1b9a14f694b11b553c04eae906e15b64364df76b62be69009767761d1798ec06ecc18

    • SSDEEP

      12288:KoUOHKWg5pj3lnY0hES5k79BA95e0Mp6IFsgJinHI0:Kovqj60hqDAK0rImgJino0

    • AgentTesla

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

    • AgentTesla payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • 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

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

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