Analysis

  • max time kernel
    83s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    06-03-2022 12:32

General

  • Target

    bilds.exe

  • Size

    1.1MB

  • MD5

    7cadb3d6d6581c2bc3642653b9286b71

  • SHA1

    ee3a164339db9e2441c035932ae382150f489fb1

  • SHA256

    5293c26f29b4af6bc2f3f74ae1ed93537e6c311a695cc0a6920a635c57383617

  • SHA512

    db01f9fd60532d121f493c9746dd846e220d8bb110b2bde52655f61a52d0b648f1bb28c7eda4d4c4ccc1066a0b77f7f476f4b558bde11d419abc6aed82f221e1

Malware Config

Extracted

Family

blackguard

C2

https://api.telegram.org/bot1840568117:AAGlvKQeSfXkObSE7__yYc5jM9o8qSrkFUw/sendMessage?chat_id=1039923904

Signatures

  • BlackGuard

    Infostealer first seen in Late 2021.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Looks up external IP address via web service 3 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bilds.exe
    "C:\Users\Admin\AppData\Local\Temp\bilds.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:3788

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/3788-130-0x0000000074FA0000-0x0000000075750000-memory.dmp

    Filesize

    7.7MB

  • memory/3788-131-0x0000000000B10000-0x0000000000C2E000-memory.dmp

    Filesize

    1.1MB

  • memory/3788-132-0x0000000005CD0000-0x0000000006274000-memory.dmp

    Filesize

    5.6MB

  • memory/3788-133-0x00000000055F0000-0x0000000005656000-memory.dmp

    Filesize

    408KB

  • memory/3788-134-0x0000000005710000-0x0000000005711000-memory.dmp

    Filesize

    4KB

  • memory/3788-135-0x0000000006320000-0x00000000063B2000-memory.dmp

    Filesize

    584KB