Analysis

  • max time kernel
    136s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 11:51

General

  • Target

    Pictures&Designs jpg jpg jpg jpg.exe

  • Size

    985KB

  • MD5

    f18c8bfd7050c5c9e3b5490eb056281c

  • SHA1

    05f0b62ff015ecb90ca36495c94842bef9a1ba45

  • SHA256

    d98b551ba123d7020b8bcc1835f0bbeb103e50d18a3d341771e1a05b1edfaf87

  • SHA512

    e616ede3c6514b6de6b4bee70fee764d04ea602640067cb5fb18aa00d7339c0d0f59a2b9a842cfa9fd1bc2383e9cfde217004ab247343aa959a51d181604083a

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    abouttomarry123

Signatures

  • AgentTesla

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

  • AgentTesla Payload 6 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • Looks for VMWare Tools registry key 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Pictures&Designs jpg jpg jpg jpg.exe
    "C:\Users\Admin\AppData\Local\Temp\Pictures&Designs jpg jpg jpg jpg.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:1680
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PLdDNErXYSoYw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpADFC.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1396
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1492

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpADFC.tmp
    Filesize

    1KB

    MD5

    0a96230553b6d43c4713fe7846a0e8c3

    SHA1

    c429605ec9a24059612148e6bd0edb0995eba3dd

    SHA256

    0e775b39e427a11dfba3d384ee07439be283ae6798cc262a3b8c4a1ad16df997

    SHA512

    c126f7d8324f67a35b89a829ae04e60cb77ce56af0d4711e5024356c8b88e972e02a80fc2a8ad3555c8b262e8d02de382aece48cd39c4bc2162cf08b341050ee

  • memory/1396-56-0x0000000000000000-mapping.dmp
  • memory/1492-61-0x0000000000400000-0x0000000000466000-memory.dmp
    Filesize

    408KB

  • memory/1492-58-0x0000000000400000-0x0000000000466000-memory.dmp
    Filesize

    408KB

  • memory/1492-59-0x0000000000400000-0x0000000000466000-memory.dmp
    Filesize

    408KB

  • memory/1492-62-0x0000000000400000-0x0000000000466000-memory.dmp
    Filesize

    408KB

  • memory/1492-64-0x0000000000460E8E-mapping.dmp
  • memory/1492-63-0x0000000000400000-0x0000000000466000-memory.dmp
    Filesize

    408KB

  • memory/1492-66-0x0000000000400000-0x0000000000466000-memory.dmp
    Filesize

    408KB

  • memory/1492-68-0x0000000000400000-0x0000000000466000-memory.dmp
    Filesize

    408KB

  • memory/1492-70-0x0000000074140000-0x00000000746EB000-memory.dmp
    Filesize

    5.7MB

  • memory/1680-55-0x0000000074140000-0x00000000746EB000-memory.dmp
    Filesize

    5.7MB

  • memory/1680-54-0x00000000752B1000-0x00000000752B3000-memory.dmp
    Filesize

    8KB