General

  • Target

    SecuriteInfo.com.MSIL.Packed.19.19491.9488

  • Size

    487KB

  • Sample

    211201-xvx86sacf7

  • MD5

    604c93c0c41e8eb994e7315b3885ec38

  • SHA1

    9af5baeab9f2461335ad3e2439bc3e5cb850932e

  • SHA256

    af29096b6cbbd74cca47337f62cc2a5553eb3cf225de3dcc993a14e452c3e9bd

  • SHA512

    59307cc35eb0606d33bd0cde817e82c1e941d9d2e903888634a77357570b67b6b4b138dc19b502b9dcf8209b46bfae757a0a6200bd56280990c76f17936948b9

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.huiijingco.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    zVYrdtq4

Targets

    • Target

      SecuriteInfo.com.MSIL.Packed.19.19491.9488

    • Size

      487KB

    • MD5

      604c93c0c41e8eb994e7315b3885ec38

    • SHA1

      9af5baeab9f2461335ad3e2439bc3e5cb850932e

    • SHA256

      af29096b6cbbd74cca47337f62cc2a5553eb3cf225de3dcc993a14e452c3e9bd

    • SHA512

      59307cc35eb0606d33bd0cde817e82c1e941d9d2e903888634a77357570b67b6b4b138dc19b502b9dcf8209b46bfae757a0a6200bd56280990c76f17936948b9

    • 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 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

    • 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

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials in Files

2
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

2
T1005

Email Collection

1
T1114

Tasks