Analysis

  • max time kernel
    77s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-11-2022 11:33

General

  • Target

    win.exe

  • Size

    532KB

  • MD5

    34d50a3607d973f9e1704de3d248a8bf

  • SHA1

    12b59cbffb2bd12b0a6037320fc2f4ba1e4d3791

  • SHA256

    baa1c79cd08201c260e7286514341d77c2786e163a06a8daa0452b13604ee2f3

  • SHA512

    5d62c37d7dc7a15f28cfe4144501c7d5742c145b43b5e120fe424169afea9b0de3955042561358c2a9243878c12ce6680a0e382145b56508874c90ecfbd85bd6

  • SSDEEP

    12288:c40gouHH1J+0Ki5EJ+IL2AGR4g73ldQAHGR4yjHH/hRNanCQE1y0:cju1i0EEwK73ldQA0n8ne1

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5295814595:AAH651y8OCDrAzKzJOhBeka_joDzflnMpb4/

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
  • 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\win.exe
    "C:\Users\Admin\AppData\Local\Temp\win.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4616
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mYBObuIct.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2068
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mYBObuIct" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2616.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4956
    • C:\Users\Admin\AppData\Local\Temp\win.exe
      "C:\Users\Admin\AppData\Local\Temp\win.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:2732

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\win.exe.log

    Filesize

    1KB

    MD5

    223f4a739ad59f1e1316c3deb7669f1b

    SHA1

    9ded1101965e95e57653925ad947cfb91d3930df

    SHA256

    d00f92bea84f7d78f23ff963bf334e8c77a7fad01a0d4cd89ac849981dfbffd7

    SHA512

    8c1cf2c6bda136ae23faea87cba8114ad65ea71320a929604a022eaf3a7dfe9958480088843903946474e2c0f47569b5270b74951a78450e5a46b8d547cb6e3f

  • C:\Users\Admin\AppData\Local\Temp\tmp2616.tmp

    Filesize

    1KB

    MD5

    4ca00c38ad891ca7a09fafe83caef6d9

    SHA1

    5295803519f3323e71a7e083e2cc8134f0a3d777

    SHA256

    6895110c4dd869fc387a666e94684af9c0bb01ca064fb7d8a61d9e347bbc5697

    SHA512

    138ee352bf024bb0500f9b1d7c3d61fadc1c3162fdeb9ea5287467eb2c879300ad7b596830edc905b364726d094fa7374b42f0ee5d8ca14cfbc38c8505e73c24

  • memory/2068-146-0x00000000057C0000-0x0000000005826000-memory.dmp

    Filesize

    408KB

  • memory/2068-153-0x0000000007860000-0x000000000787A000-memory.dmp

    Filesize

    104KB

  • memory/2068-147-0x0000000005F60000-0x0000000005FC6000-memory.dmp

    Filesize

    408KB

  • memory/2068-148-0x0000000005330000-0x000000000534E000-memory.dmp

    Filesize

    120KB

  • memory/2068-158-0x0000000007B80000-0x0000000007B88000-memory.dmp

    Filesize

    32KB

  • memory/2068-139-0x0000000002C40000-0x0000000002C76000-memory.dmp

    Filesize

    216KB

  • memory/2068-157-0x0000000007BA0000-0x0000000007BBA000-memory.dmp

    Filesize

    104KB

  • memory/2068-141-0x00000000058C0000-0x0000000005EE8000-memory.dmp

    Filesize

    6.2MB

  • memory/2068-156-0x0000000007A90000-0x0000000007A9E000-memory.dmp

    Filesize

    56KB

  • memory/2068-155-0x0000000007AE0000-0x0000000007B76000-memory.dmp

    Filesize

    600KB

  • memory/2068-154-0x00000000078D0000-0x00000000078DA000-memory.dmp

    Filesize

    40KB

  • memory/2068-145-0x00000000055A0000-0x00000000055C2000-memory.dmp

    Filesize

    136KB

  • memory/2068-152-0x0000000007EB0000-0x000000000852A000-memory.dmp

    Filesize

    6.5MB

  • memory/2068-151-0x0000000006B00000-0x0000000006B1E000-memory.dmp

    Filesize

    120KB

  • memory/2068-137-0x0000000000000000-mapping.dmp

  • memory/2068-149-0x0000000006B20000-0x0000000006B52000-memory.dmp

    Filesize

    200KB

  • memory/2068-150-0x0000000070B40000-0x0000000070B8C000-memory.dmp

    Filesize

    304KB

  • memory/2732-159-0x0000000006350000-0x00000000063A0000-memory.dmp

    Filesize

    320KB

  • memory/2732-143-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2732-142-0x0000000000000000-mapping.dmp

  • memory/4616-136-0x00000000079A0000-0x0000000007A3C000-memory.dmp

    Filesize

    624KB

  • memory/4616-135-0x0000000004E80000-0x0000000004E8A000-memory.dmp

    Filesize

    40KB

  • memory/4616-133-0x0000000005280000-0x0000000005824000-memory.dmp

    Filesize

    5.6MB

  • memory/4616-134-0x0000000004DC0000-0x0000000004E52000-memory.dmp

    Filesize

    584KB

  • memory/4616-132-0x0000000000390000-0x000000000041A000-memory.dmp

    Filesize

    552KB

  • memory/4956-138-0x0000000000000000-mapping.dmp