General

  • Target

    New Order #21076.exe

  • Size

    926KB

  • Sample

    210125-vljhtt8qbe

  • MD5

    7de57138380dd92fbee7229d46adee4a

  • SHA1

    bb63c25fc5730c0766f6f0de491725bc034a8a1f

  • SHA256

    5a052664d784432a0f9a707401e4095bef5d7703c32f9314dd5c9bdd5b273a1d

  • SHA512

    709d5e1ece9924d54560c332c2e4ae62778fd3dabafaee53b5b7e4e90f83a271e434b071f3fdccc6b0de3183a556835f049341df0b3e7a61769000809333f85c

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.tthyssenkrupp.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    pgrOSoL7

Targets

    • Target

      New Order #21076.exe

    • Size

      926KB

    • MD5

      7de57138380dd92fbee7229d46adee4a

    • SHA1

      bb63c25fc5730c0766f6f0de491725bc034a8a1f

    • SHA256

      5a052664d784432a0f9a707401e4095bef5d7703c32f9314dd5c9bdd5b273a1d

    • SHA512

      709d5e1ece9924d54560c332c2e4ae62778fd3dabafaee53b5b7e4e90f83a271e434b071f3fdccc6b0de3183a556835f049341df0b3e7a61769000809333f85c

    • 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.

    • 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

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