Analysis

  • max time kernel
    235s
  • max time network
    297s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-06-2023 10:42

General

  • Target

    K.V.L. EUR 5,418.41 20230131144411-PDF.exe

  • Size

    815KB

  • MD5

    2acddc678ea970cfb45042c954b8a268

  • SHA1

    e27c3436cb48d0b49adc30b19a5471d6960de709

  • SHA256

    1fed6157fe887393791035cca1424ff56a3416202a55c58a6b44f902b6d5d873

  • SHA512

    670e65b75b155dc63948d6d730f90e814c1c385ba26e04853dfa01070f52da3fa6ec6b4aa296adaf5c4de271ca3fbf2bb50e85456685270a9ecf0325b92f244e

  • SSDEEP

    24576:+MqsFHlWxMiQW/O4ue7AjtsVNL2HzCBjHKP+M:yulYMiQWmS7WtMcHzCwP

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 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\K.V.L. EUR 5,418.41 20230131144411-PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\K.V.L. EUR 5,418.41 20230131144411-PDF.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:748
    • 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\K.V.L. EUR 5,418.41 20230131144411-PDF.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1280
    • C:\Users\Admin\AppData\Local\Temp\K.V.L. EUR 5,418.41 20230131144411-PDF.exe
      "C:\Users\Admin\AppData\Local\Temp\K.V.L. EUR 5,418.41 20230131144411-PDF.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2620

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0v3umlhg.tbj.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/748-133-0x0000000000AA0000-0x0000000000B70000-memory.dmp

    Filesize

    832KB

  • memory/748-134-0x00000000058A0000-0x0000000005E44000-memory.dmp

    Filesize

    5.6MB

  • memory/748-135-0x00000000053E0000-0x0000000005472000-memory.dmp

    Filesize

    584KB

  • memory/748-136-0x0000000005630000-0x0000000005640000-memory.dmp

    Filesize

    64KB

  • memory/748-137-0x0000000005480000-0x000000000548A000-memory.dmp

    Filesize

    40KB

  • memory/748-138-0x0000000005630000-0x0000000005640000-memory.dmp

    Filesize

    64KB

  • memory/748-139-0x00000000087F0000-0x000000000888C000-memory.dmp

    Filesize

    624KB

  • memory/1280-142-0x0000000002BA0000-0x0000000002BD6000-memory.dmp

    Filesize

    216KB

  • memory/1280-161-0x0000000007440000-0x0000000007472000-memory.dmp

    Filesize

    200KB

  • memory/1280-144-0x00000000051A0000-0x00000000051B0000-memory.dmp

    Filesize

    64KB

  • memory/1280-181-0x0000000007AB0000-0x0000000007AB8000-memory.dmp

    Filesize

    32KB

  • memory/1280-147-0x00000000057E0000-0x0000000005E08000-memory.dmp

    Filesize

    6.2MB

  • memory/1280-146-0x00000000051A0000-0x00000000051B0000-memory.dmp

    Filesize

    64KB

  • memory/1280-148-0x00000000054E0000-0x0000000005502000-memory.dmp

    Filesize

    136KB

  • memory/1280-149-0x0000000005700000-0x0000000005766000-memory.dmp

    Filesize

    408KB

  • memory/1280-180-0x0000000007AD0000-0x0000000007AEA000-memory.dmp

    Filesize

    104KB

  • memory/1280-159-0x0000000006490000-0x00000000064AE000-memory.dmp

    Filesize

    120KB

  • memory/1280-160-0x00000000051A0000-0x00000000051B0000-memory.dmp

    Filesize

    64KB

  • memory/1280-178-0x00000000079C0000-0x00000000079CE000-memory.dmp

    Filesize

    56KB

  • memory/1280-162-0x0000000070CF0000-0x0000000070D3C000-memory.dmp

    Filesize

    304KB

  • memory/1280-172-0x0000000006A40000-0x0000000006A5E000-memory.dmp

    Filesize

    120KB

  • memory/1280-173-0x0000000007DD0000-0x000000000844A000-memory.dmp

    Filesize

    6.5MB

  • memory/1280-174-0x0000000007790000-0x00000000077AA000-memory.dmp

    Filesize

    104KB

  • memory/1280-175-0x000000007EF00000-0x000000007EF10000-memory.dmp

    Filesize

    64KB

  • memory/1280-176-0x0000000007800000-0x000000000780A000-memory.dmp

    Filesize

    40KB

  • memory/1280-177-0x0000000007A10000-0x0000000007AA6000-memory.dmp

    Filesize

    600KB

  • memory/2620-143-0x0000000004F30000-0x0000000004F96000-memory.dmp

    Filesize

    408KB

  • memory/2620-179-0x00000000066A0000-0x00000000066F0000-memory.dmp

    Filesize

    320KB

  • memory/2620-140-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2620-145-0x0000000005090000-0x00000000050A0000-memory.dmp

    Filesize

    64KB

  • memory/2620-184-0x0000000005090000-0x00000000050A0000-memory.dmp

    Filesize

    64KB