General

  • Target

    Purchase - Order.exe

  • Size

    491KB

  • Sample

    210727-kthfkqhgma

  • MD5

    c25db03537a94168fe05f968720c735a

  • SHA1

    bdf8b7786bdd448a689e06347895ca8dbddab79c

  • SHA256

    3a94befc248570bf58be57f7b0e146985221219aefed7e437ddf865711b7c069

  • SHA512

    26f27f98183de9f87807add66919fbeabf1e6373dfd98360348860f551f3292deb347560cd2ac0fe7372424374d5f1b8a8add9d92739bca32e725374bb974241

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.zakhourco.com
  • Port:
    587
  • Username:
    mira.kassar@zakhourco.com
  • Password:
    #Za$out%12

Targets

    • Target

      Purchase - Order.exe

    • Size

      491KB

    • MD5

      c25db03537a94168fe05f968720c735a

    • SHA1

      bdf8b7786bdd448a689e06347895ca8dbddab79c

    • SHA256

      3a94befc248570bf58be57f7b0e146985221219aefed7e437ddf865711b7c069

    • SHA512

      26f27f98183de9f87807add66919fbeabf1e6373dfd98360348860f551f3292deb347560cd2ac0fe7372424374d5f1b8a8add9d92739bca32e725374bb974241

    • AgentTesla

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

    • AgentTesla Payload

    • Looks for VirtualBox Guest Additions in registry

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • 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.

    • Adds Run key to start application

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Tasks