Analysis

  • max time kernel
    66s
  • max time network
    129s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    07/10/2021, 23:59

General

  • Target
    514d7999fe66e570441ddfe29816318b.exe
  • Size 588KB
  • Sample211007-31p3msdbgl
  • SHA256 0d26ea04ba2af21fab0fbef4ebe8331db037f0d540bc569b5591c2f613a502f4
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • redline

Botnet
  • mix08.10

C2
  • 185.215.113.15:57055

Signatures

  • RedLine

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

  • RedLine Payload 2 IoCs
  • suricata: ET MALWARE AutoHotkey Downloader Checkin via IPLogger

    suricata: ET MALWARE AutoHotkey Downloader Checkin via IPLogger

  • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

  • Downloads MZ/PE file
  • Executes dropped EXE 1 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
  • 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.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\514d7999fe66e570441ddfe29816318b.exe
    "C:\Users\Admin\AppData\Local\Temp\514d7999fe66e570441ddfe29816318b.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:652
    • C:\Users\Admin\AppData\Roaming\gfree\monns.exe
      monns.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2328

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/652-115-0x0000000002EE0000-0x0000000002FAF000-memory.dmp

        memory/652-116-0x0000000000400000-0x0000000002BD3000-memory.dmp

        memory/652-114-0x0000000002C34000-0x0000000002CA0000-memory.dmp

        memory/2328-126-0x0000000007660000-0x0000000007661000-memory.dmp

        memory/2328-130-0x0000000004FE0000-0x0000000004FE1000-memory.dmp

        memory/2328-121-0x00000000049B0000-0x00000000049E0000-memory.dmp

        memory/2328-122-0x0000000000400000-0x0000000002DB6000-memory.dmp

        memory/2328-123-0x0000000004AC0000-0x0000000004ADF000-memory.dmp

        memory/2328-124-0x0000000007670000-0x0000000007671000-memory.dmp

        memory/2328-125-0x0000000004F30000-0x0000000004F4D000-memory.dmp

        memory/2328-127-0x0000000007662000-0x0000000007663000-memory.dmp

        memory/2328-128-0x0000000007663000-0x0000000007664000-memory.dmp

        memory/2328-129-0x0000000007B70000-0x0000000007B71000-memory.dmp

        memory/2328-120-0x0000000003029000-0x000000000304C000-memory.dmp

        memory/2328-131-0x0000000007500000-0x0000000007501000-memory.dmp

        memory/2328-132-0x0000000007664000-0x0000000007666000-memory.dmp

        memory/2328-133-0x0000000007610000-0x0000000007611000-memory.dmp

        memory/2328-134-0x00000000081B0000-0x00000000081B1000-memory.dmp

        memory/2328-135-0x0000000008DD0000-0x0000000008DD1000-memory.dmp

        memory/2328-136-0x0000000008FA0000-0x0000000008FA1000-memory.dmp

        memory/2328-137-0x00000000095E0000-0x00000000095E1000-memory.dmp

        memory/2328-138-0x00000000096B0000-0x00000000096B1000-memory.dmp

        memory/2328-139-0x00000000097A0000-0x00000000097A1000-memory.dmp

        memory/2328-140-0x0000000009930000-0x0000000009931000-memory.dmp