Analysis

  • max time kernel
    29s
  • max time network
    27s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    18/02/2021, 19:17

General

  • Target
    3c55ce0720097ed56bf705f6361a660c.exe
  • Size 622KB
  • Sample210218-kqf7j9daps
  • SHA256 42b653a004ebf20afd1797fa69fe13dc18c07281befd059d21c3f5f994b33723
  • 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\3c55ce0720097ed56bf705f6361a660c.exe
    "C:\Users\Admin\AppData\Local\Temp\3c55ce0720097ed56bf705f6361a660c.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1752
    • 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:1732

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1328-6-0x000007FEF7160000-0x000007FEF73DA000-memory.dmp

        memory/1732-10-0x0000000003080000-0x0000000003091000-memory.dmp

        memory/1732-15-0x0000000004830000-0x000000000485C000-memory.dmp

        memory/1732-20-0x0000000006FF4000-0x0000000006FF6000-memory.dmp

        memory/1732-19-0x0000000006FF3000-0x0000000006FF4000-memory.dmp

        memory/1732-17-0x0000000006FF1000-0x0000000006FF2000-memory.dmp

        memory/1732-11-0x0000000004590000-0x00000000045A1000-memory.dmp

        memory/1732-12-0x0000000000230000-0x0000000000266000-memory.dmp

        memory/1732-13-0x0000000000400000-0x0000000000439000-memory.dmp

        memory/1732-14-0x0000000073A50000-0x000000007413E000-memory.dmp

        memory/1732-18-0x0000000006FF2000-0x0000000006FF3000-memory.dmp

        memory/1732-16-0x0000000006E90000-0x0000000006EBA000-memory.dmp

        memory/1752-5-0x0000000000400000-0x00000000004D5000-memory.dmp

        memory/1752-2-0x0000000000B90000-0x0000000000BA1000-memory.dmp

        memory/1752-3-0x0000000075EB1000-0x0000000075EB3000-memory.dmp

        memory/1752-4-0x0000000000230000-0x00000000002FF000-memory.dmp