Overview

overview

10

Static

static

10

1ab91c6b55...19.exe

windows7_x64

10

1ab91c6b55...19.exe

windows10_x64

10

Analysis

  • max time kernel
    125s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    03-05-2021 12:01

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    1ab91c6b55ef7fe9426448d1b365e919.exe

  • Size

    47KB

  • MD5

    1ab91c6b55ef7fe9426448d1b365e919

  • SHA1

    a47527efb62e08131fadd1c0c321d1405688acde

  • SHA256

    0953e07352cc9da191595f0dc233d4c04070b507f3503cf7cd62e6bb9a680ec7

  • SHA512

    bf940cda054dcf7a117296dfec96683ad3b6b1d0a431caa171741630145df33d6f57f30b647c8fbbd04648fc716fba9ca78a673398b522e06b3a37a489a0c87f

Score
10/10
asyncratrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

C2

cryptserver.hopto.org:4444

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • aes_key

    eT1fq0d6dtymBNAUb6WLtqX26xciO5Sd

  • anti_detection

    true

  • autorun

    true

  • bdos

    false

  • delay

    Default

  • host

    cryptserver.hopto.org

  • hwid

    3

  • install_file

  • install_folder

    %AppData%

  • mutex

    AsyncMutex_6SI8OkPnk

  • pastebin_config

    null

  • port

    4444

  • version

    0.5.7B

aes.plain

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\1ab91c6b55ef7fe9426448d1b365e919.exe
    "C:\Users\Admin\AppData\Local\Temp\1ab91c6b55ef7fe9426448d1b365e919.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:736
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "update" /tr '"C:\Users\Admin\AppData\Roaming\update.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4068
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "update" /tr '"C:\Users\Admin\AppData\Roaming\update.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:1184
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC4FB.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2732
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:1228
      • C:\Users\Admin\AppData\Roaming\update.exe
        "C:\Users\Admin\AppData\Roaming\update.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:2248

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/736-117-0x0000000005750000-0x0000000005751000-memory.dmp

    Filesize

    4KB

    Download

  • memory/736-118-0x0000000005CC0000-0x0000000005CC1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/736-116-0x00000000057D0000-0x00000000057D1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/736-114-0x0000000000F10000-0x0000000000F11000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2248-129-0x00000000049B0000-0x00000000049B1000-memory.dmp

    Filesize

    4KB

    Download