General

  • Target

    Specifications.zip

  • Size

    429KB

  • Sample

    211021-hmf8cshhh5

  • MD5

    c1d72c9054f4f86c5668869b3bf266d0

  • SHA1

    fcb4a772da2c1a59eb0c3a69873d7d2041adb892

  • SHA256

    014853661f6a4c200fd91f25e8d4fee1acc69746a92d42b5dd5c8a235d30bf65

  • SHA512

    212f1011aa467986171d85e4137bb71f13c8acff7b2e083e41e30607e990e3c5a1f7d03f54179871e59523bdbfb0ece4c05da11a758782ecb18fb9c537700008

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.northsrockusa.com/
  • Port:
    21
  • Username:
    admin@northsrockusa.com
  • Password:
    VoX,U=~j}n-V

Targets

    • Target

      Specifications/Specifications.exe

    • Size

      643KB

    • MD5

      aa7c28ff29133cf0081cfc242cde4d2d

    • SHA1

      1b6394622652010c90144992c6968efcfa97a114

    • SHA256

      11e49b27ba39c927e8d09de369ffb5d534507616a53446ca12dcc535338ebd63

    • SHA512

      af5652c38e0a0d287d66b536bb014ac8d42665fbf030fdcdb3cc5c77e223f6512a18dc000af5e24f7e65a80d93109213596f856ed491b7fc5d3e26029cbe11a0

    • AgentTesla

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

    • AgentTesla Payload

    • 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 v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks