Analysis

  • max time kernel
    82s
  • max time network
    111s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    04/07/2021, 06:54

General

  • Target
    810307da04037b7e59ed98ffa629b5da.exe
  • Size 618KB
  • Sample210704-216rfct19n
  • SHA256 e95cd5fcc8ae6b6c8c852ec533f57af4ff72e978a1a5a7fd0ae825ac407e6535
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • redline

Botnet
  • 04.07

C2
  • 185.215.113.15:61506

Signatures

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • 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
  • Checks installed software on the system 1 TTPs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

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

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\810307da04037b7e59ed98ffa629b5da.exe
    "C:\Users\Admin\AppData\Local\Temp\810307da04037b7e59ed98ffa629b5da.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1728
    • C:\Users\Admin\AppData\Roaming\nailedp\edspolish.exe
      edspolish.exe
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:860

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/860-68-0x00000000020A0000-0x00000000020B9000-memory.dmp

        memory/860-67-0x00000000003D0000-0x00000000003EB000-memory.dmp

        memory/860-69-0x0000000000220000-0x000000000024F000-memory.dmp

        memory/860-71-0x0000000004C51000-0x0000000004C52000-memory.dmp

        memory/860-70-0x0000000000400000-0x00000000005F9000-memory.dmp

        memory/860-72-0x0000000004C52000-0x0000000004C53000-memory.dmp

        memory/860-73-0x0000000004C53000-0x0000000004C54000-memory.dmp

        memory/860-74-0x0000000004C54000-0x0000000004C56000-memory.dmp

        memory/1728-60-0x0000000075161000-0x0000000075163000-memory.dmp

        memory/1728-61-0x0000000000230000-0x00000000002FF000-memory.dmp

        memory/1728-62-0x0000000000400000-0x0000000000645000-memory.dmp