Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09/11/2020, 20:09

General

  • Target
    3c59ce6c1cef9dbc4808d9c10e90f83d.exe
  • Size 234KB
  • Sample201109-vvlr8ca31j
  • SHA256 5b0ffdd98aa6a53e13e00b7723f9c8085e7b03356c5ec4e77cc88c9779011b74
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.7B

C2
  • moveforme.ug:6970

  • xafsavxcfdgbdsfg.ru:6970

Mutex
  • AsyncMutex_ggkanor

Attributes
  • aes_key

    li2MB48BWA2H16sJwngH2ceTNgp1xxPb

  • anti_detection

    false

  • autorun

    false

  • bdos

    false

  • delay

    Spread

  • host

    moveforme.ug,xafsavxcfdgbdsfg.ru

  • hwid

    3

  • install_file

  • install_folder

    %AppData%

  • mutex

    AsyncMutex_ggkanor

  • pastebin_config

    null

  • port

    6970

  • version

    0.5.7B

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • CoreEntity .NET Packer 1 IoCs

    A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

  • Async RAT payload 2 IoCs
  • rezer0 1 IoCs

    Detects ReZer0, a packer with multiple versions used in various campaigns.

  • Suspicious use of SetThreadContext 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3c59ce6c1cef9dbc4808d9c10e90f83d.exe
    "C:\Users\Admin\AppData\Local\Temp\3c59ce6c1cef9dbc4808d9c10e90f83d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3408
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RSIHBty" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3A7E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2660
    • C:\Users\Admin\AppData\Local\Temp\3c59ce6c1cef9dbc4808d9c10e90f83d.exe
      "{path}"
      2⤵
        PID:2484

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/2484-14-0x0000000073E00000-0x00000000744EE000-memory.dmp

          memory/2484-11-0x0000000000400000-0x0000000000412000-memory.dmp

          memory/3408-4-0x00000000073B0000-0x00000000073B1000-memory.dmp

          memory/3408-8-0x00000000096A0000-0x00000000096A1000-memory.dmp

          memory/3408-7-0x0000000009070000-0x0000000009083000-memory.dmp

          memory/3408-6-0x0000000008F90000-0x0000000008F92000-memory.dmp

          memory/3408-5-0x0000000007350000-0x0000000007351000-memory.dmp

          memory/3408-0-0x0000000073E00000-0x00000000744EE000-memory.dmp

          memory/3408-3-0x0000000007810000-0x0000000007811000-memory.dmp

          memory/3408-1-0x0000000000610000-0x0000000000611000-memory.dmp