Analysis

  • max time kernel
    141s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220310-en
  • submitted
    16-03-2022 06:08

General

  • Target

    4219085.exe

  • Size

    793KB

  • MD5

    0dacbb28cef175c1e01560fe18e3ee70

  • SHA1

    61b84862a70a43ef54ffe00b8c15cb192e9d79a8

  • SHA256

    9dbaa30f9fbccd0821c136557992a8dfa6e1c92af89aa637807f18db7a7e7f78

  • SHA512

    38abff21af4afd5939da8f7332169d665b47a57e0fd7357716d1ea942868e260878f51312ff22c216f071c5d5cdcb92ab80e6acc7c2df77e98300c62c4df29db

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.escueladeseguridadmaritima.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    JUsatelite2020

Signatures

  • suricata: ET MALWARE AgentTesla Exfil Via SMTP

    suricata: ET MALWARE AgentTesla Exfil Via SMTP

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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
  • 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 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4219085.exe
    "C:\Users\Admin\AppData\Local\Temp\4219085.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3128
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YuvPkgD.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1312
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YuvPkgD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp865F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2848
    • C:\Users\Admin\AppData\Local\Temp\4219085.exe
      "C:\Users\Admin\AppData\Local\Temp\4219085.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:4848

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp865F.tmp

    MD5

    fd37ebfc1ef5a886c5ad12583ac943f7

    SHA1

    944f4393700f66dd44c639961e57e454ba3ea548

    SHA256

    861b011f379c4d2483dcf5c78d77d3ed1d3a6a740b8a4be0dec0f5fe03e4850a

    SHA512

    e414d3428bc087e982af853125e41c068f824d6d710d4e1187f52e6500afabc6fd8d9ad186d6acee03a44952401f781835b7b5060e2860fc7a171d7ed8135299

  • memory/1312-150-0x00000000058E0000-0x0000000005902000-memory.dmp

    Filesize

    136KB

  • memory/1312-142-0x0000000002F70000-0x0000000002FA6000-memory.dmp

    Filesize

    216KB

  • memory/1312-167-0x0000000007F50000-0x0000000007F58000-memory.dmp

    Filesize

    32KB

  • memory/1312-151-0x0000000005980000-0x00000000059E6000-memory.dmp

    Filesize

    408KB

  • memory/1312-166-0x0000000007F70000-0x0000000007F8A000-memory.dmp

    Filesize

    104KB

  • memory/1312-165-0x0000000006CE0000-0x0000000006CEE000-memory.dmp

    Filesize

    56KB

  • memory/1312-163-0x0000000007EB0000-0x0000000007F46000-memory.dmp

    Filesize

    600KB

  • memory/1312-152-0x0000000005AA0000-0x0000000005B06000-memory.dmp

    Filesize

    408KB

  • memory/1312-143-0x00000000745D0000-0x0000000074D80000-memory.dmp

    Filesize

    7.7MB

  • memory/1312-144-0x00000000031B0000-0x00000000031B1000-memory.dmp

    Filesize

    4KB

  • memory/1312-162-0x0000000007CA0000-0x0000000007CAA000-memory.dmp

    Filesize

    40KB

  • memory/1312-146-0x0000000005B40000-0x0000000006168000-memory.dmp

    Filesize

    6.2MB

  • memory/1312-147-0x00000000031B2000-0x00000000031B3000-memory.dmp

    Filesize

    4KB

  • memory/1312-153-0x0000000006320000-0x000000000633E000-memory.dmp

    Filesize

    120KB

  • memory/1312-161-0x0000000007C30000-0x0000000007C4A000-memory.dmp

    Filesize

    104KB

  • memory/1312-160-0x0000000008290000-0x000000000890A000-memory.dmp

    Filesize

    6.5MB

  • memory/1312-159-0x000000007EFF0000-0x000000007EFF1000-memory.dmp

    Filesize

    4KB

  • memory/1312-158-0x0000000006F30000-0x0000000006F4E000-memory.dmp

    Filesize

    120KB

  • memory/1312-157-0x0000000070160000-0x00000000701AC000-memory.dmp

    Filesize

    304KB

  • memory/1312-154-0x00000000031B5000-0x00000000031B7000-memory.dmp

    Filesize

    8KB

  • memory/1312-156-0x0000000006EE0000-0x0000000006F12000-memory.dmp

    Filesize

    200KB

  • memory/3128-136-0x0000000005830000-0x0000000005DD4000-memory.dmp

    Filesize

    5.6MB

  • memory/3128-138-0x0000000005280000-0x0000000005824000-memory.dmp

    Filesize

    5.6MB

  • memory/3128-134-0x00000000745D0000-0x0000000074D80000-memory.dmp

    Filesize

    7.7MB

  • memory/3128-135-0x0000000000770000-0x000000000083C000-memory.dmp

    Filesize

    816KB

  • memory/3128-140-0x00000000012E0000-0x000000000137C000-memory.dmp

    Filesize

    624KB

  • memory/3128-139-0x00000000051E0000-0x00000000051EA000-memory.dmp

    Filesize

    40KB

  • memory/3128-137-0x0000000005280000-0x0000000005312000-memory.dmp

    Filesize

    584KB

  • memory/4848-155-0x00000000064C0000-0x0000000006510000-memory.dmp

    Filesize

    320KB

  • memory/4848-148-0x00000000745D0000-0x0000000074D80000-memory.dmp

    Filesize

    7.7MB

  • memory/4848-149-0x00000000052F0000-0x00000000052F1000-memory.dmp

    Filesize

    4KB

  • memory/4848-145-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/4848-164-0x00000000052F1000-0x00000000052F2000-memory.dmp

    Filesize

    4KB