Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    17/08/2022, 02:00

General

  • Target

    TRANSFERENCIA $112987.17.js

  • Size

    50KB

  • MD5

    fec5ad2c4cd364f6780813e4170d43d5

  • SHA1

    b7ce2fb648f9cbf7fd69a16f083599bfe5511d53

  • SHA256

    5dfaea003a9b484fad723fc13f79303169e4c8f2f414a4ee0ef187f7ebd0aac9

  • SHA512

    bfa44ffc12478a1bb12266e8a00ff912def28f321a1eaa400c0cec730f2aacfb97e78822b33f5ad436421e1aa8e170c0da3da01ad646a59f466b0cd04dae4838

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.sure-peper.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    fzu!HnL7

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.sure-peper.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    fzu!HnL7

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

  • Blocklisted process makes network request 36 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Drops startup file 4 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\TRANSFERENCIA $112987.17.js"
    1⤵
    • Blocklisted process makes network request
    • Suspicious use of WriteProcessMemory
    PID:1904
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\jQCWVHjWAA.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      • Suspicious use of WriteProcessMemory
      PID:1976
      • C:\Windows\System32\wscript.exe
        "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\bZQEUbJxNj.js"
        3⤵
        • Blocklisted process makes network request
        • Drops startup file
        PID:272
    • C:\Users\Admin\AppData\Local\Temp\ori.exe
      "C:\Users\Admin\AppData\Local\Temp\ori.exe"
      2⤵
      • Executes dropped EXE
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:592

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\ori.exe

          Filesize

          209KB

          MD5

          2163b2e3196d9b2d1d0d7a88a0cba4fc

          SHA1

          e1015c9e03d2271329497cd4ba94d0b602b34c26

          SHA256

          95c3ac7b2e9cefca3a064ffea5b45138ec4fc2216f51a55e0c352458cfffc254

          SHA512

          293b9764d98d147aa5be1490c1e03795fb46398d9f4fff8fc0698c02672fba5cb9f88017f4a03416bb1a0748ea7a4ed741b6b89e94a16b0e39f6a059481c437c

        • C:\Users\Admin\AppData\Local\Temp\ori.exe

          Filesize

          209KB

          MD5

          2163b2e3196d9b2d1d0d7a88a0cba4fc

          SHA1

          e1015c9e03d2271329497cd4ba94d0b602b34c26

          SHA256

          95c3ac7b2e9cefca3a064ffea5b45138ec4fc2216f51a55e0c352458cfffc254

          SHA512

          293b9764d98d147aa5be1490c1e03795fb46398d9f4fff8fc0698c02672fba5cb9f88017f4a03416bb1a0748ea7a4ed741b6b89e94a16b0e39f6a059481c437c

        • C:\Users\Admin\AppData\Roaming\bZQEUbJxNj.js

          Filesize

          6KB

          MD5

          a542a21ecaba36f6ba8c6457b8ab67f9

          SHA1

          3f05ddc6d6e59554cd9870b9e4b17919b81eaa6c

          SHA256

          bc831f27e6da7b5e82be628a1564c8b6aee02ec9290c5d21f99733dd2d1db47b

          SHA512

          78ca13a83bbd029470978b1e465ee6b0c2a9345a1fe8ee3e86d9f1d48bd52b7927a16e607f71084a91706213d8ddc0293ed06a1927e478b9bbc21ab0b47b9a2a

        • C:\Users\Admin\AppData\Roaming\jQCWVHjWAA.js

          Filesize

          26KB

          MD5

          1f7855c87513cf8d9f4b5319445865cf

          SHA1

          a73d48e0da18067c2e943da97c45acb679e18139

          SHA256

          b386904566434edecd5319ebe730f8c5ecd05d8003eaf8b695cc771aa17c2579

          SHA512

          41eb3f05e08fa6b878b1a8ffa90cba44756be53ea09d00c63425ba176f1bef31dc677caea99acfb2e6298403efaae1af4e71ea5a7fe29158a9c0510bfee022a9

        • memory/272-58-0x000007FEFBCC1000-0x000007FEFBCC3000-memory.dmp

          Filesize

          8KB

        • memory/592-62-0x0000000000900000-0x000000000093A000-memory.dmp

          Filesize

          232KB

        • memory/592-63-0x0000000075351000-0x0000000075353000-memory.dmp

          Filesize

          8KB