General

  • Target

    3f3a8442b3a36cf557f9535d67c11a1040392df889587b2f6341d682b4cb47dd

  • Size

    252KB

  • Sample

    220308-x58gwsdhcm

  • MD5

    2fdcd6f63014c05331365fe96538c010

  • SHA1

    107473be86d052f460685f9e5879aed530433b5b

  • SHA256

    3f3a8442b3a36cf557f9535d67c11a1040392df889587b2f6341d682b4cb47dd

  • SHA512

    da553a61ca0e9cc877941c22652f0ae4917c05e4b0f699e4518dfd60b139e06a17747cfb26dce67685d41f5164d49eedae63e94c310444ce7a24b3783b5283f5

Malware Config

Extracted

Family

matiex

Credentials

Targets

    • Target

      3f3a8442b3a36cf557f9535d67c11a1040392df889587b2f6341d682b4cb47dd

    • Size

      252KB

    • MD5

      2fdcd6f63014c05331365fe96538c010

    • SHA1

      107473be86d052f460685f9e5879aed530433b5b

    • SHA256

      3f3a8442b3a36cf557f9535d67c11a1040392df889587b2f6341d682b4cb47dd

    • SHA512

      da553a61ca0e9cc877941c22652f0ae4917c05e4b0f699e4518dfd60b139e06a17747cfb26dce67685d41f5164d49eedae63e94c310444ce7a24b3783b5283f5

    • Matiex

      Matiex is a keylogger and infostealer first seen in July 2020.

    • Matiex Main Payload

    • Checks computer location settings

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

    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

2
T1005

Email Collection

1
T1114

Tasks