General

  • Target

    1983ca8eb7b0270ef0681fa6fd3d1ca8cdf416800c2403be82e8d6cf2b722f12

  • Size

    446KB

  • Sample

    240705-bw4xfsygrp

  • MD5

    dcb0a260c42324fea0225b8f07939105

  • SHA1

    a550e5fd06f286f0e2427954fdcffea8333e1d27

  • SHA256

    1983ca8eb7b0270ef0681fa6fd3d1ca8cdf416800c2403be82e8d6cf2b722f12

  • SHA512

    cbb51b952b72b93586ef791056d3f45d4690199134b173b76942c104d1b8067cd6583d88dc3bc05c3e89905a4c63762f664d9832eefb2e6d6c71ec3c136a95d4

  • SSDEEP

    12288:EWQofC1P5wYpwmdfCrzhSLmi3Jf+Mg9e:EWK15wwwmdmEb3x+Mg8

Malware Config

Extracted

Family

xworm

Version

5.0

C2

127.0.0.1:2005

79.110.62.113:2005

Mutex

0QFmCI3ycTg10NnI

Attributes
  • install_file

    USB.exe

aes.plain

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot7121198832:AAHWmvzY7jDQqG8pk3uwnutesjvQDyHyYTs/

Targets

    • Target

      1983ca8eb7b0270ef0681fa6fd3d1ca8cdf416800c2403be82e8d6cf2b722f12

    • Size

      446KB

    • MD5

      dcb0a260c42324fea0225b8f07939105

    • SHA1

      a550e5fd06f286f0e2427954fdcffea8333e1d27

    • SHA256

      1983ca8eb7b0270ef0681fa6fd3d1ca8cdf416800c2403be82e8d6cf2b722f12

    • SHA512

      cbb51b952b72b93586ef791056d3f45d4690199134b173b76942c104d1b8067cd6583d88dc3bc05c3e89905a4c63762f664d9832eefb2e6d6c71ec3c136a95d4

    • SSDEEP

      12288:EWQofC1P5wYpwmdfCrzhSLmi3Jf+Mg9e:EWK15wwwmdmEb3x+Mg8

    • AgentTesla

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

    • Detect Xworm Payload

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • 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.

    • 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 v13

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

4
T1005

Tasks