Analysis

  • max time kernel
    129s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230621-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/07/2023, 07:43

General

  • Target

    b4df3d7f0826501829e1a03991e1fe81.exe

  • Size

    605KB

  • MD5

    b4df3d7f0826501829e1a03991e1fe81

  • SHA1

    87e32c06302f04fcc647de19f004812bf51c886c

  • SHA256

    c165fbefe04f523b3045dca492b7e72bf82cfc75fceed6e63cfcd180ec6fe20e

  • SHA512

    af53be29a64f237537d0e99577861c3e97d8f01d3826c2dc0ca48d7c410bd28ff6cde21d8d95e84fc7f1d864b6e7923759e15a4bad71597ce9b0aa6c239b826a

  • SSDEEP

    12288:GOrOoafZF7BHEmOyyhYT3BAM233Ta4RZq4:jaNHRHaG3GTnu4RZq4

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
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b4df3d7f0826501829e1a03991e1fe81.exe
    "C:\Users\Admin\AppData\Local\Temp\b4df3d7f0826501829e1a03991e1fe81.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1412
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\b4df3d7f0826501829e1a03991e1fe81.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2564
    • C:\Users\Admin\AppData\Local\Temp\b4df3d7f0826501829e1a03991e1fe81.exe
      "C:\Users\Admin\AppData\Local\Temp\b4df3d7f0826501829e1a03991e1fe81.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:4452

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\b4df3d7f0826501829e1a03991e1fe81.exe.log

          Filesize

          1KB

          MD5

          8ec831f3e3a3f77e4a7b9cd32b48384c

          SHA1

          d83f09fd87c5bd86e045873c231c14836e76a05c

          SHA256

          7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

          SHA512

          26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ughoflqn.qzs.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/1412-134-0x0000000004F70000-0x0000000005514000-memory.dmp

          Filesize

          5.6MB

        • memory/1412-135-0x0000000004AA0000-0x0000000004B32000-memory.dmp

          Filesize

          584KB

        • memory/1412-136-0x0000000004A80000-0x0000000004A8A000-memory.dmp

          Filesize

          40KB

        • memory/1412-137-0x0000000004C70000-0x0000000004C80000-memory.dmp

          Filesize

          64KB

        • memory/1412-138-0x0000000004C70000-0x0000000004C80000-memory.dmp

          Filesize

          64KB

        • memory/1412-139-0x00000000098D0000-0x000000000996C000-memory.dmp

          Filesize

          624KB

        • memory/1412-133-0x0000000000020000-0x00000000000BE000-memory.dmp

          Filesize

          632KB

        • memory/2564-158-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/2564-179-0x0000000007060000-0x000000000706A000-memory.dmp

          Filesize

          40KB

        • memory/2564-183-0x0000000007320000-0x0000000007328000-memory.dmp

          Filesize

          32KB

        • memory/2564-146-0x0000000004D30000-0x0000000004D52000-memory.dmp

          Filesize

          136KB

        • memory/2564-147-0x0000000004ED0000-0x0000000004F36000-memory.dmp

          Filesize

          408KB

        • memory/2564-143-0x00000000023B0000-0x00000000023E6000-memory.dmp

          Filesize

          216KB

        • memory/2564-157-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/2564-182-0x0000000007340000-0x000000000735A000-memory.dmp

          Filesize

          104KB

        • memory/2564-181-0x0000000007230000-0x000000000723E000-memory.dmp

          Filesize

          56KB

        • memory/2564-160-0x0000000005CF0000-0x0000000005D0E000-memory.dmp

          Filesize

          120KB

        • memory/2564-161-0x00000000062B0000-0x00000000062E2000-memory.dmp

          Filesize

          200KB

        • memory/2564-162-0x0000000070070000-0x00000000700BC000-memory.dmp

          Filesize

          304KB

        • memory/2564-172-0x0000000006290000-0x00000000062AE000-memory.dmp

          Filesize

          120KB

        • memory/2564-174-0x000000007F7F0000-0x000000007F800000-memory.dmp

          Filesize

          64KB

        • memory/2564-173-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/2564-180-0x0000000007280000-0x0000000007316000-memory.dmp

          Filesize

          600KB

        • memory/2564-145-0x0000000005290000-0x00000000058B8000-memory.dmp

          Filesize

          6.2MB

        • memory/2564-177-0x0000000007640000-0x0000000007CBA000-memory.dmp

          Filesize

          6.5MB

        • memory/2564-178-0x0000000006FF0000-0x000000000700A000-memory.dmp

          Filesize

          104KB

        • memory/4452-176-0x00000000068A0000-0x0000000006A62000-memory.dmp

          Filesize

          1.8MB

        • memory/4452-175-0x0000000006680000-0x00000000066D0000-memory.dmp

          Filesize

          320KB

        • memory/4452-159-0x00000000057B0000-0x00000000057C0000-memory.dmp

          Filesize

          64KB

        • memory/4452-140-0x0000000000400000-0x0000000000430000-memory.dmp

          Filesize

          192KB

        • memory/4452-144-0x00000000056F0000-0x0000000005756000-memory.dmp

          Filesize

          408KB

        • memory/4452-186-0x00000000057B0000-0x00000000057C0000-memory.dmp

          Filesize

          64KB