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Analysis

  • max time kernel
    74s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    10/03/2023, 06:43

General

  • Target

    AWB #3827747403.exe

  • Size

    967KB

  • MD5

    85e3d11ed86882201474adead2d4b102

  • SHA1

    05348ce84bc06ef24aa4ac35ad35e80cb8725565

  • SHA256

    9bdb5db36a0d82f4cbdc06a3cec49c6ba164be2b7c62e236d3b4ee3c5ebd73a1

  • SHA512

    542ee81c4a37e0f531193e26ab13cec295f57b9656d49616216c7f6e44c254e4aadfa0b8917b270db0364086d83346939382d1be844df752ca989c2814031cac

  • SSDEEP

    12288:Z3yifFlLKHFjcsqUWv2ir0ZNKgjMOQKf5pV2cZD1+RLQT+OGzd70BmuFfJxUWbde:dyiFvTOKgIO7BD2cpdid70BDrSWbrc

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    marcellinus360

Signatures

  • AgentTesla

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

  • 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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\AWB #3827747403.exe
    "C:\Users\Admin\AppData\Local\Temp\AWB #3827747403.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2000
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\vUIJPhtxAlbHr.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1768
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vUIJPhtxAlbHr" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCBD8.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:472
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1032

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpCBD8.tmp

    Filesize

    1KB

    MD5

    1bcdfe55e70845afd870031c2a0c8fd0

    SHA1

    804db570905dda7ec2b3ea10be32a1cb3604906e

    SHA256

    08ce5082e457ed1e36965ffba0545c2e5dda0c6c5f4dcb6cda20c02b8853b8b3

    SHA512

    e34b8814f76bbed6dc474896a575b24e4df3a9a6754ab492b40f9c1ec9919d9022a7de24697a35b71b14a78bda04835420455cffaf9f1e1788678ee3a3052bff

  • memory/1032-70-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1032-75-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1032-101-0x0000000004D70000-0x0000000004DB0000-memory.dmp

    Filesize

    256KB

  • memory/1032-100-0x0000000004D70000-0x0000000004DB0000-memory.dmp

    Filesize

    256KB

  • memory/1032-79-0x0000000004D70000-0x0000000004DB0000-memory.dmp

    Filesize

    256KB

  • memory/1032-77-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1032-67-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1032-68-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1032-69-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1032-71-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1032-72-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1768-73-0x0000000002870000-0x00000000028B0000-memory.dmp

    Filesize

    256KB

  • memory/1768-78-0x0000000002870000-0x00000000028B0000-memory.dmp

    Filesize

    256KB

  • memory/2000-58-0x0000000007A00000-0x0000000007AB8000-memory.dmp

    Filesize

    736KB

  • memory/2000-56-0x00000000072F0000-0x0000000007330000-memory.dmp

    Filesize

    256KB

  • memory/2000-66-0x0000000000560000-0x00000000005A0000-memory.dmp

    Filesize

    256KB

  • memory/2000-55-0x00000000003A0000-0x00000000003B4000-memory.dmp

    Filesize

    80KB

  • memory/2000-54-0x0000000000800000-0x00000000008F6000-memory.dmp

    Filesize

    984KB

  • memory/2000-57-0x00000000004C0000-0x00000000004CC000-memory.dmp

    Filesize

    48KB