General

  • Target

    13001d8e9316592a0ba319cd3289b2210ede64338db27fba6ad7f97a0d747d01

  • Size

    399KB

  • Sample

    220521-dzxzesbfap

  • MD5

    97d297389d2ab21c8f20187c4f816787

  • SHA1

    370bada0874671a17979eeca71fc92f8a17e3e23

  • SHA256

    13001d8e9316592a0ba319cd3289b2210ede64338db27fba6ad7f97a0d747d01

  • SHA512

    8b4d92065f7f2110660ded58ffaa3e5a35b07e2e306b63a42f64465c317361e9c1d9ed39c723a99adba09ff46811ee3be50a9d03a6ede4a16f1c4a309aa6ba28

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    vps.dochem.pw
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    bAy64WwH

Targets

    • Target

      Invoice_UD345KNG.exe

    • Size

      457KB

    • MD5

      cb3d05cce5867b81f644e23f1e73229c

    • SHA1

      b715fd4259a371330c3e77c7af224b360b70fd5f

    • SHA256

      6599a4bdbadcb94a61e747a55454ed5ec2938122daece5255de039aa3820c5b5

    • SHA512

      b8ca74e694ef3174c95aad9e070225f0a60e5c3ca82168ca39546500baeb601c44229b4be3074733393cc53f8e996cf9c08ec3378071d87205a7ab3174dc4773

    • AgentTesla

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

    • CoreEntity .NET Packer

      A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

    • AgentTesla Payload

    • ReZer0 packer

      Detects ReZer0, a packer with multiple versions used in various campaigns.

    • 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

    • 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

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks