Overview

overview

10

Static

static

a988a32ab0...12.exe

windows7_x64

10

a988a32ab0...12.exe

windows10_x64

10

Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    28/12/2021, 02:12

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General

  • Target
    a988a32ab0e1124c9ea84347ace12a12.exe
  • Size 615KB
  • Sample211228-cmwp6addb5
  • SHA256 6afa8f79af9fd9ec79a3ebd4fd0932c496afdd4766df779a796e9ee502553562
  • MD5 SHA1 SHA512
Score
10/10
asyncratrat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.6D

C2

  • milla.publicvm.com:6606

  • milla.publicvm.com:7707

  • milla.publicvm.com:8808

Mutex

  • qryrotocjrgqb

Attributes
  • anti_vm

    false

  • bsod

    false

  • delay

    1

  • install

    true

  • install_file

    microsofteedge.exe

  • install_folder

    %AppData%

  • pastebin_config

    null

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

    ratasyncrat
  • Async RAT payload 1 IoCs
    rat
  • 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 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a988a32ab0e1124c9ea84347ace12a12.exe
    "C:\Users\Admin\AppData\Local\Temp\a988a32ab0e1124c9ea84347ace12a12.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3100
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /ru system /rl highest /tn a988a32ab0e1124c9ea84347ace12a12 /tr '"C:\Users\Admin\AppData\Roaming\microsofteedge.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4000
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /ru system /rl highest /tn a988a32ab0e1124c9ea84347ace12a12 /tr '"C:\Users\Admin\AppData\Roaming\microsofteedge.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:2412
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp6732.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3968
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2528

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/3100-115-0x0000000000CD0000-0x0000000000D70000-memory.dmp
        Download

        memory/3100-116-0x0000000000CD0000-0x0000000000D70000-memory.dmp
        Download

        memory/3100-117-0x0000000005580000-0x000000000561C000-memory.dmp
        Download

        memory/3100-118-0x0000000002F70000-0x0000000002F82000-memory.dmp
        Download

        memory/3100-119-0x00000000056A0000-0x00000000056A1000-memory.dmp
        Download