Overview

overview

10

Static

static

051988E2E2...90.exe

windows7_x64

10

051988E2E2...90.exe

windows10_x64

10

Analysis

  • max time kernel
    144s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    24-07-2021 18:47

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General

  • Target

    051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe

  • Size

    986KB

  • MD5

    1de9a9696cb0de0c4b5d80a069f011c8

  • SHA1

    ebcbec44ec2755337a49a84935a3917867d6e4f4

  • SHA256

    051988e2e2a1ef5e3a27c935e6b694268eea61d3dc790b7e99d86560d772df8f

  • SHA512

    8f8f848c9775472f51e70eb49020235d109a51f1be9f6f6b25389f7586fe4056b23f153317e50cafcbcd0ae40d7b95c395be28734090b32bbaa098afccfd52fd

Score
10/10
asyncratevasionrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

C2

marianavilla3008o.duckdns.org:1020

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • aes_key

    0BWUkyqcUqHqVx84fueTgswHmIDOrV5h

  • anti_detection

    false

  • autorun

    false

  • bdos

    false

  • delay

    Default

  • host

    marianavilla3008o.duckdns.org,

  • hwid

    3

  • install_file

  • install_folder

    %AppData%

  • mutex

    AsyncMutex_6SI8OkPnk

  • pastebin_config

    null

  • port

    1020

  • version

    0.5.7B

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

    ratasyncrat
  • Async RAT payload 3 IoCs
    rat
  • CustAttr .NET packer 1 IoCs

    Detects CustAttr .NET packer in memory.

  • Looks for VirtualBox Guest Additions in registry 2 TTPs
    evasion
  • Looks for VMWare Tools registry key 2 TTPs
    evasion
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • 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.

    persistence
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe
    "C:\Users\Admin\AppData\Local\Temp\051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe"
    1⤵
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1816
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kLTggmZvhe" /XML "C:\Users\Admin\AppData\Local\Temp\tmp933B.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:396
    • C:\Users\Admin\AppData\Local\Temp\051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe
      "C:\Users\Admin\AppData\Local\Temp\051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe"
      2⤵
        PID:1072
      • C:\Users\Admin\AppData\Local\Temp\051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe
        "C:\Users\Admin\AppData\Local\Temp\051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe"
        2⤵
          PID:1720

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Initial Access

      Execution

      Scheduled Task

      1
      T1053

      Persistence

      Scheduled Task

      1
      T1053

      Privilege Escalation

      Scheduled Task

      1
      T1053

      Defense Evasion

      Virtualization/Sandbox Evasion

      2
      T1497

      Credential Access

      Discovery

      Query Registry

      4
      T1012

      Virtualization/Sandbox Evasion

      2
      T1497

      System Information Discovery

      3
      T1082

      Peripheral Device Discovery

      1
      T1120

      Lateral Movement

      Collection

      Exfiltration

      Command and Control

      Impact

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmp933B.tmp
        MD5

        3071d48833d6ae9e5b6dccd81f3486be

        SHA1

        9268e7ef921c1831aead6cbd29dd4e87b2240ceb

        SHA256

        e4ef996ee12088cf4eb658445d21e05704f870fc87eeec56935192d44b0bc44c

        SHA512

        b7479f67b5e88fbbede5dd324298a4c7c333c0f17f3bfa7e4467f2cf318ffc2eab9339b74562c9a76e1a0ce71b93e4b4661a6d9e5a76786569cc98a2522770dd

        Download Submit
      • memory/396-67-0x0000000000000000-mapping.dmp
        Download
      • memory/1720-69-0x0000000000400000-0x0000000000412000-memory.dmp
        Filesize

        72KB

        Download
      • memory/1720-70-0x000000000040C73E-mapping.dmp
        Download
      • memory/1720-71-0x0000000000400000-0x0000000000412000-memory.dmp
        Filesize

        72KB

        Download
      • memory/1720-73-0x0000000075EF1000-0x0000000075EF3000-memory.dmp
        Filesize

        8KB

        Download
      • memory/1720-74-0x0000000004E00000-0x0000000004E01000-memory.dmp
        Filesize

        4KB

        Download
      • memory/1816-64-0x000000007EF40000-0x000000007EF41000-memory.dmp
        Filesize

        4KB

        Download
      • memory/1816-65-0x00000000050F0000-0x0000000005188000-memory.dmp
        Filesize

        608KB

        Download
      • memory/1816-66-0x0000000000840000-0x0000000000892000-memory.dmp
        Filesize

        328KB

        Download
      • memory/1816-63-0x0000000000770000-0x0000000000771000-memory.dmp
        Filesize

        4KB

        Download
      • memory/1816-62-0x0000000000760000-0x0000000000765000-memory.dmp
        Filesize

        20KB

        Download
      • memory/1816-60-0x0000000000120000-0x0000000000121000-memory.dmp
        Filesize

        4KB

        Download