Analysis

  • max time kernel
    91s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21/04/2022, 00:12

General

  • Target
    bc9964b04c2c38eb8fab28aae525071e.exe
  • Size 106KB
  • Sample220421-ag827achb6
  • SHA256 deceeec4d99e6b4b70de57d6ee732b1f70e6cbb9ea27d0bb7304fd51b1ca0b2d
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • redline

Botnet
  • 7

C2
  • 49.12.222.31:8854

Attributes
  • auth_value

    811329e6a45eab1a6b331f7b5c15ef6d

Signatures

  • RedLine

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

  • RedLine Payload 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bc9964b04c2c38eb8fab28aae525071e.exe
    "C:\Users\Admin\AppData\Local\Temp\bc9964b04c2c38eb8fab28aae525071e.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3508
    • C:\Users\Admin\AppData\Local\Temp\exe.exe
      "C:\Users\Admin\AppData\Local\Temp\exe.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:892

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        exe.exe

        • Path C:\Users\Admin\AppData\Local\Temp\exe.exe
        • Size 2.0MB
        • SHA256 fb62b0e284bddf9a8cf125e945a06f6687c783768690db4ed4e490e858272496
        • MD5 SHA1 SHA512 SSDEEP

        exe.exe

        • Path C:\Users\Admin\AppData\Local\Temp\exe.exe
        • Size 2.0MB
        • SHA256 fb62b0e284bddf9a8cf125e945a06f6687c783768690db4ed4e490e858272496
        • MD5 SHA1 SHA512 SSDEEP

        memory/3508-138-0x00000000059F0000-0x0000000005A66000-memory.dmp

        memory/3508-134-0x0000000004A40000-0x0000000004A7C000-memory.dmp

        memory/3508-135-0x0000000004D70000-0x0000000004DD6000-memory.dmp

        memory/3508-136-0x0000000005DF0000-0x0000000006394000-memory.dmp

        memory/3508-137-0x0000000005950000-0x00000000059E2000-memory.dmp

        memory/3508-130-0x0000000000050000-0x0000000000070000-memory.dmp

        memory/3508-139-0x0000000005D20000-0x0000000005D3E000-memory.dmp

        memory/3508-140-0x0000000006770000-0x0000000006932000-memory.dmp

        memory/3508-141-0x0000000006E70000-0x000000000739C000-memory.dmp

        memory/3508-142-0x0000000006940000-0x0000000006990000-memory.dmp

        memory/3508-133-0x0000000004B10000-0x0000000004C1A000-memory.dmp

        memory/3508-132-0x00000000049E0000-0x00000000049F2000-memory.dmp

        memory/3508-131-0x0000000004FE0000-0x00000000055F8000-memory.dmp