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Analysis

  • max time kernel
    91s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/01/2023, 13:41

General

  • Target

    395b72299c5bf7155600b796385d06839c60239abd8ac93dc3383100bd75dca2.exe

  • Size

    846KB

  • MD5

    c68a796a0096cb46db8fb3e8ad120e6c

  • SHA1

    9ecf7ea3b8164f2c428e652f67c5cc2f13b854a6

  • SHA256

    395b72299c5bf7155600b796385d06839c60239abd8ac93dc3383100bd75dca2

  • SHA512

    cc346b6b3819e77d7747bf60646ad2b8222fa3ea01f5b9e0e299faf088ff3740d7ff62f7f07188960a331739130697b5582bd135ee615894cf34bdef2c81f10b

  • SSDEEP

    12288:ZsoQgKZ/nXt7virmWhlGLaQYI4glQ1ivb+jnHAbzeSZ5qTkXoXyD9dmLw5qgls2T:Zi9begbzdZ5Cm2yDDSwUYaO

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.crownoffice.xyz
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    GRACEoverflow123@

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
  • Adds Run key to start application 2 TTPs 1 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\395b72299c5bf7155600b796385d06839c60239abd8ac93dc3383100bd75dca2.exe
    "C:\Users\Admin\AppData\Local\Temp\395b72299c5bf7155600b796385d06839c60239abd8ac93dc3383100bd75dca2.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2580
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\JVQskRqUDiJgyn.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:448
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JVQskRqUDiJgyn" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA31.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:760
    • C:\Users\Admin\AppData\Local\Temp\395b72299c5bf7155600b796385d06839c60239abd8ac93dc3383100bd75dca2.exe
      "C:\Users\Admin\AppData\Local\Temp\395b72299c5bf7155600b796385d06839c60239abd8ac93dc3383100bd75dca2.exe"
      2⤵
      • 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:820

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpA31.tmp

    Filesize

    1KB

    MD5

    0e21efbca37766219d7ea7c037a8baeb

    SHA1

    3c0f412b6b0a98420835fc5e539d37730f9c428b

    SHA256

    0226b38698e5fb9b3f67cb7d898b94afd2266547c5172732de01c9aea46f31c1

    SHA512

    4d324b5560431c9ea1a2de14fcf62fca681974eb367324b798457443b3ae513ebe90db68d999c689386351a2c9b248303ec9f6b0aa39bef2d1347dbc19b343d3

  • memory/448-150-0x0000000006550000-0x000000000656E000-memory.dmp

    Filesize

    120KB

  • memory/448-152-0x00000000072B0000-0x00000000072CA000-memory.dmp

    Filesize

    104KB

  • memory/448-157-0x00000000075D0000-0x00000000075D8000-memory.dmp

    Filesize

    32KB

  • memory/448-156-0x00000000075F0000-0x000000000760A000-memory.dmp

    Filesize

    104KB

  • memory/448-146-0x0000000005950000-0x00000000059B6000-memory.dmp

    Filesize

    408KB

  • memory/448-139-0x0000000002670000-0x00000000026A6000-memory.dmp

    Filesize

    216KB

  • memory/448-154-0x0000000007530000-0x00000000075C6000-memory.dmp

    Filesize

    600KB

  • memory/448-142-0x0000000005270000-0x0000000005898000-memory.dmp

    Filesize

    6.2MB

  • memory/448-153-0x0000000007320000-0x000000000732A000-memory.dmp

    Filesize

    40KB

  • memory/448-145-0x0000000005180000-0x00000000051E6000-memory.dmp

    Filesize

    408KB

  • memory/448-144-0x0000000004FE0000-0x0000000005002000-memory.dmp

    Filesize

    136KB

  • memory/448-147-0x0000000004D00000-0x0000000004D1E000-memory.dmp

    Filesize

    120KB

  • memory/448-155-0x00000000074E0000-0x00000000074EE000-memory.dmp

    Filesize

    56KB

  • memory/448-151-0x00000000078F0000-0x0000000007F6A000-memory.dmp

    Filesize

    6.5MB

  • memory/448-148-0x0000000006570000-0x00000000065A2000-memory.dmp

    Filesize

    200KB

  • memory/448-149-0x0000000070C90000-0x0000000070CDC000-memory.dmp

    Filesize

    304KB

  • memory/820-143-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/820-158-0x0000000007690000-0x00000000076E0000-memory.dmp

    Filesize

    320KB

  • memory/2580-132-0x0000000000610000-0x00000000006EA000-memory.dmp

    Filesize

    872KB

  • memory/2580-134-0x0000000005080000-0x0000000005112000-memory.dmp

    Filesize

    584KB

  • memory/2580-133-0x0000000005550000-0x0000000005AF4000-memory.dmp

    Filesize

    5.6MB

  • memory/2580-136-0x0000000005320000-0x00000000053BC000-memory.dmp

    Filesize

    624KB

  • memory/2580-135-0x0000000005230000-0x000000000523A000-memory.dmp

    Filesize

    40KB