Overview

overview

10

Static

static

10

CV.png.exe

windows7_x64

CV.png.exe

windows10_x64

10

Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    15/09/2021, 10:51

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General

  • Target
    CV.png.exe
  • Size 47KB
  • Sample210915-mxtcwsdfbj
  • SHA256 ee0fe8f2d0201c5fbcbdc2b796ecc5feb02b9a525b7ab183f8d03a31c6e0b7e3
  • MD5 SHA1 SHA512
Score
10/10
asyncratrat

Malware Config

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

    ratasyncrat
  • Async RAT payload 2 IoCs
    rat
  • Executes dropped EXE 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.

    persistence
  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\CV.png.exe
    "C:\Users\Admin\AppData\Local\Temp\CV.png.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:752
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "dew" /tr '"C:\Users\Admin\AppData\Roaming\dew.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1060
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "dew" /tr '"C:\Users\Admin\AppData\Roaming\dew.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:1524
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp911A.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1112
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:1548
      • C:\Users\Admin\AppData\Roaming\dew.exe
        "C:\Users\Admin\AppData\Roaming\dew.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:1780

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/752-114-0x0000000000CE0000-0x0000000000CE1000-memory.dmp
        Download

        memory/752-116-0x0000000005630000-0x0000000005631000-memory.dmp
        Download

        memory/752-117-0x0000000005640000-0x0000000005641000-memory.dmp
        Download

        memory/1780-128-0x00000000047F0000-0x00000000047F1000-memory.dmp
        Download