Analysis

  • max time kernel
    91s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-11-2022 12:43

General

  • Target

    INVOICE AND PARKING LIST.exe

  • Size

    966KB

  • MD5

    20fc35db368eec91fa1068dc03147015

  • SHA1

    50ad1f61e404b32795bc7c1a84bf66e1bc424182

  • SHA256

    52f21a43347e87dc80a1c50c97e68535687bc95425289b5797e59d96b7edcd57

  • SHA512

    294ac1dc9800d2caf47c0932ca33d039fc10088b10cd5ebc9d28dd1857d77826b0cb07c8dcabb964b34b51a12e611f26851ef6132260220f329dc5a4e1822a1b

  • SSDEEP

    24576:sCOqU376Cs7kFgJCUVsuICz/B38/qjI9J0zRT8WWSig+IyXt:srMkbkstmJ3eqj9RJWSigAX

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\INVOICE AND PARKING LIST.exe
    "C:\Users\Admin\AppData\Local\Temp\INVOICE AND PARKING LIST.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1556
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FGyxgJerZQEg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp753F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4648
    • C:\Users\Admin\AppData\Local\Temp\INVOICE AND PARKING LIST.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:4168

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp753F.tmp

    Filesize

    1KB

    MD5

    90cddfda3eff2e244906d777310e90c3

    SHA1

    b544e2dd22ea88d3b4057adc478cc1bcc0274b6c

    SHA256

    74eda875dbffd8845b8a65410a969f355ae62843c9953e72fdf89779191d984c

    SHA512

    db23de604aeaa49f161d91e8268c3a38175c8799d294b0cbb17dfba5d480c35dca35dc4c4132deeba68e3932f3548ccb4eb330d1e01e35bcceb325ed26e2faf3

  • memory/1556-132-0x00000000002F0000-0x00000000003E8000-memory.dmp

    Filesize

    992KB

  • memory/1556-133-0x00000000053B0000-0x0000000005954000-memory.dmp

    Filesize

    5.6MB

  • memory/1556-134-0x0000000004E00000-0x0000000004E92000-memory.dmp

    Filesize

    584KB

  • memory/1556-135-0x0000000004F40000-0x0000000004FDC000-memory.dmp

    Filesize

    624KB

  • memory/1556-136-0x0000000004EB0000-0x0000000004EBA000-memory.dmp

    Filesize

    40KB

  • memory/4168-139-0x0000000000000000-mapping.dmp

  • memory/4168-140-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/4168-141-0x0000000005C00000-0x0000000005C66000-memory.dmp

    Filesize

    408KB

  • memory/4168-142-0x0000000006AF0000-0x0000000006B40000-memory.dmp

    Filesize

    320KB

  • memory/4648-137-0x0000000000000000-mapping.dmp