General

  • Target

    a00115f4a9e20f6f982db8332779ccd02a8dbf9bb1db45e54a21d374b24cf3b4

  • Size

    382KB

  • Sample

    220521-cwyk4shfgl

  • MD5

    fbcd0cb9ece0628d818cfbea031d7fe3

  • SHA1

    0302647ffb10134335740017bba74894a31a5a6e

  • SHA256

    a00115f4a9e20f6f982db8332779ccd02a8dbf9bb1db45e54a21d374b24cf3b4

  • SHA512

    c4c4d3d9dbf08272c2729fc8fabd14cae71690219060d62217a67e5c832cb5c893bda1761c4b049ee7c7a4bdbbece3f3b939320d1ee11cdb00eeb7f2cbc78a10

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.haden-tours.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    In-159753

Targets

    • Target

      Statement of Account.exe

    • Size

      441KB

    • MD5

      3ee58a720e88f477d6f817c44aa7c47b

    • SHA1

      9b68c4d21b544c3fa4fcfa6f469480a70fe8a947

    • SHA256

      9a813db555b2a251a1068f50b1b02d642bb570337058f7f3a7028cafccbe1f54

    • SHA512

      535c2869714cd970160dfe85f23735979dec4e08244e3e73e954bd6a7d902ae578046533be9f34a8e9e174232b9a640b2a327305e52a91cbd2da96080d1047ab

    • 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.

    • Accesses Microsoft Outlook profiles

    • 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

Persistence

Registry Run Keys / Startup Folder

1
T1060

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

2
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks