Analysis

  • max time kernel
    149s
  • max time network
    168s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    22/06/2021, 13:17

General

  • Target
    567225e63d26da94a21764c2eeb3f656.exe
  • Size 1.1MB
  • Sample210622-k2n6qawlyj
  • SHA256 b4f0d107e95fa6f3aaae96d0341f0f0ad90b2dfa1fe7d9e04903eb2354a39ded
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Family
  • limerat

Wallets
  • 1LLUV51XQKqq94X965Cc6uGPXeZEGSqCdV

Attributes
  • aes_key

    NYANCAT

  • antivm

    false

  • c2_url

    https://pastebin.com/raw/4pByu6u5

  • delay

    3

  • download_payload

    false

  • install

    false

  • install_name

    Wservices.exe

  • main_folder

    AppData

  • pin_spread

    false

  • sub_folder

    \

  • usb_spread

    true

Signatures

  • LimeRAT

    Simple yet powerful RAT for Windows machines written in .NET.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\567225e63d26da94a21764c2eeb3f656.exe
    "C:\Users\Admin\AppData\Local\Temp\567225e63d26da94a21764c2eeb3f656.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1668
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZvWAdimvGBUdre" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB4BF.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:472
    • C:\Users\Admin\AppData\Local\Temp\567225e63d26da94a21764c2eeb3f656.exe
      "C:\Users\Admin\AppData\Local\Temp\567225e63d26da94a21764c2eeb3f656.exe"
      2⤵
        PID:576
      • C:\Users\Admin\AppData\Local\Temp\567225e63d26da94a21764c2eeb3f656.exe
        "C:\Users\Admin\AppData\Local\Temp\567225e63d26da94a21764c2eeb3f656.exe"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:712

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/712-67-0x0000000000400000-0x000000000040C000-memory.dmp

          memory/712-69-0x0000000000400000-0x000000000040C000-memory.dmp

          memory/712-71-0x00000000049B0000-0x00000000049B1000-memory.dmp

          memory/712-72-0x0000000000690000-0x00000000006A8000-memory.dmp

          memory/1668-59-0x0000000000180000-0x0000000000181000-memory.dmp

          memory/1668-61-0x0000000000510000-0x0000000000520000-memory.dmp

          memory/1668-62-0x0000000002010000-0x0000000002011000-memory.dmp

          memory/1668-63-0x0000000005110000-0x0000000005187000-memory.dmp

          memory/1668-64-0x0000000001FB0000-0x0000000001FED000-memory.dmp