General

  • Target

    68f3400958bb9b00fbc1843bd9bef8c9cc54f7c51c346befdc4ab78017729df9

  • Size

    615KB

  • Sample

    220521-db2mpsfdb5

  • MD5

    28554a04a3e424d76329d41443481578

  • SHA1

    f043ad66ace3d4099a2d938c8af51146a0363f2f

  • SHA256

    68f3400958bb9b00fbc1843bd9bef8c9cc54f7c51c346befdc4ab78017729df9

  • SHA512

    d759476b88422b0ee6c7afbc01fc10937fceb17956841173b256f854ab7253853d9ee34d3189aa1f77d9407e8d170adcc3f760268e34677540fc9942d9e43942

Malware Config

Targets

    • Target

      未付发票付款(Outstanding invoice payments).exe

    • Size

      668KB

    • MD5

      76a16bed1a858e75f1ef97d567013ada

    • SHA1

      935ff6bb1dd762b33036bef5907891ababbf769f

    • SHA256

      743cd5b161539860d7779adcc10b393ebb812c8c201b98c974b43ff1f404c34d

    • SHA512

      0b4627c8c45b65f2d3ac81947c98f30e84a322a719bf7405d345a5c247bad35b1cfcc6bbdfb252560987546dcc5a8390198e1bcfaa0efc9a53e8704deb126833

    • 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.

    • Checks computer location settings

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

    • 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

    • 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

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks