Analysis

  • max time kernel
    121s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    23/05/2021, 14:15

General

  • Target
    ed6b638616aa2da40c8c3fd265825ca2.exe
  • Size 687KB
  • Sample210523-xe8dkbjsfx
  • SHA256 e111cb308bfaeaf36a7954281106aa741eb51d212640692e500ad1da63c4dd5f
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • redline

Botnet
  • MIX 23.05

C2
  • xisolenoy.xyz:80

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 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
  • 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\ed6b638616aa2da40c8c3fd265825ca2.exe
    "C:\Users\Admin\AppData\Local\Temp\ed6b638616aa2da40c8c3fd265825ca2.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1748
    • C:\Users\Admin\AppData\Roaming\nailedp\edspolishpp.exe
      edspolishpp.exe
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1084

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1084-65-0x0000000000530000-0x000000000054F000-memory.dmp

        memory/1084-66-0x0000000001F40000-0x0000000001F5D000-memory.dmp

        memory/1084-67-0x0000000000260000-0x0000000000290000-memory.dmp

        memory/1084-69-0x0000000000561000-0x0000000000562000-memory.dmp

        memory/1084-68-0x0000000000400000-0x000000000046B000-memory.dmp

        memory/1084-70-0x0000000000562000-0x0000000000563000-memory.dmp

        memory/1084-71-0x0000000000563000-0x0000000000564000-memory.dmp

        memory/1084-72-0x0000000000564000-0x0000000000566000-memory.dmp

        memory/1748-61-0x0000000000400000-0x00000000004D5000-memory.dmp

        memory/1748-60-0x00000000004E0000-0x00000000005AE000-memory.dmp

        memory/1748-59-0x00000000757E1000-0x00000000757E3000-memory.dmp