Analysis

  • max time kernel
    91s
  • max time network
    93s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    19/02/2021, 08:27

General

  • Target
    157a96f6946aa3d287f26375aa91dede.exe
  • Size 530KB
  • Sample210219-ck6pscwdka
  • SHA256 9f3059cd216e4310893b76812fac2bd3b203a592e5604347472b71ada0150855
  • 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\157a96f6946aa3d287f26375aa91dede.exe
    "C:\Users\Admin\AppData\Local\Temp\157a96f6946aa3d287f26375aa91dede.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:2008
    • 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:1236

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1236-12-0x0000000073930000-0x000000007401E000-memory.dmp

        memory/1236-18-0x0000000002382000-0x0000000002383000-memory.dmp

        memory/1236-20-0x0000000002384000-0x0000000002386000-memory.dmp

        memory/1236-19-0x0000000002383000-0x0000000002384000-memory.dmp

        memory/1236-17-0x0000000002381000-0x0000000002382000-memory.dmp

        memory/1236-10-0x0000000000B30000-0x0000000000B41000-memory.dmp

        memory/1236-11-0x0000000002450000-0x0000000002461000-memory.dmp

        memory/1236-13-0x0000000000230000-0x0000000000265000-memory.dmp

        memory/1236-14-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1236-16-0x0000000002650000-0x0000000002677000-memory.dmp

        memory/1236-15-0x0000000002330000-0x0000000002359000-memory.dmp

        memory/1912-6-0x000007FEF5D50000-0x000007FEF5FCA000-memory.dmp

        memory/2008-2-0x0000000000990000-0x00000000009A1000-memory.dmp

        memory/2008-5-0x0000000000400000-0x00000000004D5000-memory.dmp

        memory/2008-3-0x0000000075EA1000-0x0000000075EA3000-memory.dmp

        memory/2008-4-0x0000000000990000-0x0000000000A5F000-memory.dmp