Analysis

  • max time kernel
    22s
  • max time network
    21s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    19/02/2021, 11:01

General

  • Target
    18889b8e2068be41fd7c4cd9b5c2bfe4.exe
  • Size 530KB
  • Sample210219-9cgpd7ecsa
  • SHA256 b2e0c72237dbad9cbd82ec93814b1b078779d3016d4e7d18b7bd5ff2cdeb9c68
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • RedLine

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

  • RedLine Payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • 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\18889b8e2068be41fd7c4cd9b5c2bfe4.exe
    "C:\Users\Admin\AppData\Local\Temp\18889b8e2068be41fd7c4cd9b5c2bfe4.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1904
    • C:\Users\Admin\AppData\Roaming\paperships\noabu.exe
      noabu.exe
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1504

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1504-14-0x0000000002670000-0x0000000002697000-memory.dmp

        memory/1504-18-0x0000000002632000-0x0000000002633000-memory.dmp

        memory/1504-20-0x0000000002634000-0x0000000002636000-memory.dmp

        memory/1504-19-0x0000000002633000-0x0000000002634000-memory.dmp

        memory/1504-16-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1504-10-0x0000000000AA0000-0x0000000000AB1000-memory.dmp

        memory/1504-11-0x00000000022C0000-0x00000000022D1000-memory.dmp

        memory/1504-12-0x0000000074020000-0x000000007470E000-memory.dmp

        memory/1504-13-0x00000000025E0000-0x0000000002609000-memory.dmp

        memory/1504-17-0x0000000002631000-0x0000000002632000-memory.dmp

        memory/1504-15-0x00000000001C0000-0x00000000001F5000-memory.dmp

        memory/1660-6-0x000007FEF63D0000-0x000007FEF664A000-memory.dmp

        memory/1904-2-0x0000000000CD0000-0x0000000000CE1000-memory.dmp

        memory/1904-5-0x0000000000400000-0x00000000004D5000-memory.dmp

        memory/1904-3-0x00000000766F1000-0x00000000766F3000-memory.dmp

        memory/1904-4-0x0000000000880000-0x000000000094F000-memory.dmp