Analysis

  • max time kernel
    24s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    21/08/2021, 06:37

General

  • Target
    ac1064081f8fdbfefd0157e16f9b2761.exe
  • Size 544KB
  • Sample210821-e5ljr8jern
  • SHA256 ca0bc652d651f727d69fbb22cc91037bc825989e759fd54f6eb0cc118286506f
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • redline

Botnet
  • mix21.08

C2
  • 31.44.3.94:62655

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
  • 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 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ac1064081f8fdbfefd0157e16f9b2761.exe
    "C:\Users\Admin\AppData\Local\Temp\ac1064081f8fdbfefd0157e16f9b2761.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:2028
    • C:\Users\Admin\AppData\Roaming\hyperc\apinesp.exe
      apinesp.exe
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:984

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/984-68-0x0000000002D70000-0x0000000002D8C000-memory.dmp

        memory/984-67-0x0000000000230000-0x000000000025F000-memory.dmp

        memory/984-69-0x0000000004A60000-0x0000000004A7A000-memory.dmp

        memory/984-71-0x0000000007041000-0x0000000007042000-memory.dmp

        memory/984-70-0x0000000000400000-0x0000000002CCC000-memory.dmp

        memory/984-72-0x0000000007042000-0x0000000007043000-memory.dmp

        memory/984-73-0x0000000007043000-0x0000000007044000-memory.dmp

        memory/984-74-0x0000000007044000-0x0000000007046000-memory.dmp

        memory/2028-60-0x00000000765F1000-0x00000000765F3000-memory.dmp

        memory/2028-61-0x0000000002D90000-0x0000000002E5E000-memory.dmp

        memory/2028-62-0x0000000000400000-0x0000000002D16000-memory.dmp