Analysis

  • max time kernel
    4294178s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20220223-en
  • submitted
    06-03-2022 12:39

General

  • Target

    rtyDtrtfgass.exe

  • Size

    964KB

  • MD5

    76f95035b61727eb2a4719781b163b04

  • SHA1

    9571a8e284753f13c058d56d097ddb5b6d3555ea

  • SHA256

    352c936eaf45ffd2f99ba2a9e726eaa39af29d4c37a6ad5106849f07aa35896c

  • SHA512

    dc5766aff3997f7e48886f5b47c0759eaa0972aa5a3f90405703366bfecafc0f99c4e762e108c021892345d0181f3c3aed705b0aff09ab788b56f1a193efc035

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.

  • Looks up external IP address via web service 3 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
  • 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\rtyDtrtfgass.exe
    "C:\Users\Admin\AppData\Local\Temp\rtyDtrtfgass.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:964

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/964-54-0x0000000000AF0000-0x0000000000BE6000-memory.dmp

    Filesize

    984KB

  • memory/964-55-0x0000000074580000-0x0000000074C6E000-memory.dmp

    Filesize

    6.9MB

  • memory/964-56-0x0000000004B00000-0x0000000004B76000-memory.dmp

    Filesize

    472KB

  • memory/964-57-0x0000000004B90000-0x0000000004B91000-memory.dmp

    Filesize

    4KB