General

  • Target

    build.exe

  • Size

    1.6MB

  • Sample

    240616-vjqnvathnq

  • MD5

    8bd4171be9f9313835d788ae50f2dcbe

  • SHA1

    350ca31f7d1f21c3bc61b78e037c448ad83e22d0

  • SHA256

    c3cb7705b9a58c4a53e9db5a935972b6666f4848a117e0de4e938b70443fcd8e

  • SHA512

    421be6e914171c397643765298c2b14aee6e6cfab76154efb5da5b95c8f99f8ce50b672c1974b19c7520b9abce1880ba03b2b2a9854078baa7355995188cf7d8

  • SSDEEP

    49152:7kTq24GjdGSiqkqXfd+/9AqYanieKdsC:71EjdGSiqkqXf0FLYW

Malware Config

Extracted

Family

stealerium

C2

https://discord.com/api/webhooks/1209144145956966400/rDfbFBNp34_OYH4RTykGFuXPKA2yPjHR8dtnAj2WBSFEiWP7j058NFG1pBeDxyauGktf

Targets

    • Target

      build.exe

    • Size

      1.6MB

    • MD5

      8bd4171be9f9313835d788ae50f2dcbe

    • SHA1

      350ca31f7d1f21c3bc61b78e037c448ad83e22d0

    • SHA256

      c3cb7705b9a58c4a53e9db5a935972b6666f4848a117e0de4e938b70443fcd8e

    • SHA512

      421be6e914171c397643765298c2b14aee6e6cfab76154efb5da5b95c8f99f8ce50b672c1974b19c7520b9abce1880ba03b2b2a9854078baa7355995188cf7d8

    • SSDEEP

      49152:7kTq24GjdGSiqkqXfd+/9AqYanieKdsC:71EjdGSiqkqXf0FLYW

    • Stealerium

      An open source info stealer written in C# first seen in May 2022.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • 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

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

5
T1012

System Information Discovery

5
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Command and Control

Web Service

1
T1102

Tasks