General

  • Target

    525c7562.exe

  • Size

    392KB

  • Sample

    220328-wtgpcsdag9

  • MD5

    cb2378c76f2e317525717d7650443c9e

  • SHA1

    4fafea299cc6a48a7e8823a32139e8632a72ea8f

  • SHA256

    525c7562d9f07b07e1bf4a92543ab81576abc61c2ea074f82426b5f0f54df2ec

  • SHA512

    67a4c1a620feca6f814427467a1a62f7246a72a65c3f1c74eef5ef37a2cccd39be21535734819f762c58f06ac2da2a2e5285c2aee186e025c73cb2701b2cd763

Malware Config

Targets

    • Target

      525c7562.exe

    • Size

      392KB

    • MD5

      cb2378c76f2e317525717d7650443c9e

    • SHA1

      4fafea299cc6a48a7e8823a32139e8632a72ea8f

    • SHA256

      525c7562d9f07b07e1bf4a92543ab81576abc61c2ea074f82426b5f0f54df2ec

    • SHA512

      67a4c1a620feca6f814427467a1a62f7246a72a65c3f1c74eef5ef37a2cccd39be21535734819f762c58f06ac2da2a2e5285c2aee186e025c73cb2701b2cd763

    • A310logger

      A310 Logger is a .NET stealer/logger targeting passwords from browsers and email clients.

    • UAC bypass

    • A310logger Executable

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Windows Firewall

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Checks computer location settings

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

    • Drops startup file

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • 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 v6

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

BITS Jobs

1
T1197

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Modify Registry

3
T1112

BITS Jobs

1
T1197

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

4
T1082

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Tasks