Analysis

  • max time kernel
    144s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-03-2023 13:48

General

  • Target

    shipping documents.exe

  • Size

    963KB

  • MD5

    5ec19c18eff49f78ce02e2cf1831c37d

  • SHA1

    9d7261d0e2558dd6bd26373c4e2421ad83af6b19

  • SHA256

    ee9c3569905a2a2b5141982928e9205a99170189dab43f8626102e1a6dddbe4e

  • SHA512

    b7a8a7b81bc259728206cebc2d7c7530791fad39f5cc2a4fe0bad61ae582e3529ed5a2f01a6f48e78724c80132f717e05525dc170c0da5f2f40153a905cdd688

  • SSDEEP

    24576:Jy0QhPJkBhdsXcq1YLTH3p3k4zwCeWdBBuIJC6gE:Jy0QhEvsXb18mOi6p

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Drops file in Drivers directory 1 IoCs
  • 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 3 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\shipping documents.exe
    "C:\Users\Admin\AppData\Local\Temp\shipping documents.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1544
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vOqVEnqC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp62A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2460
    • C:\Users\Admin\AppData\Local\Temp\shipping documents.exe
      "{path}"
      2⤵
      • Drops file in Drivers directory
      • 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:2972

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    1KB

    MD5

    84e77a587d94307c0ac1357eb4d3d46f

    SHA1

    83cc900f9401f43d181207d64c5adba7a85edc1e

    SHA256

    e16024b092a026a9dc00df69d4b9bbcab7b2dc178dc5291fc308a1abc9304a99

    SHA512

    aefb5c62200b3ed97718d20a89990954d4d8acdc0a6a73c5a420f1bba619cb79e70c2cd0a579b9f52dc6b09e1de2cea6cd6cac4376cfee92d94e2c01d310f691

  • C:\Users\Admin\AppData\Local\Temp\tmp62A.tmp

    Filesize

    1KB

    MD5

    946e3ba4051dcc0fcdb77f8f288a5125

    SHA1

    9a023248c178583f4ff54b4228d60a21553b8aed

    SHA256

    3e5c97fa24b7a7d28402f2bb013948e01d6e806b72ae3343a3583354704e23d9

    SHA512

    0e8692895fd0abf42820c007a76a9e7051bb75286333c9288ac905afc09f0aa10fbb61522f50533ddae9609768fed100e34a2b569f4c1737f7a43eed4fefd469

  • memory/1544-136-0x0000000004DC0000-0x0000000004E5C000-memory.dmp

    Filesize

    624KB

  • memory/1544-133-0x0000000000220000-0x0000000000318000-memory.dmp

    Filesize

    992KB

  • memory/1544-137-0x0000000004F30000-0x0000000004F40000-memory.dmp

    Filesize

    64KB

  • memory/1544-138-0x0000000004CB0000-0x0000000004CBA000-memory.dmp

    Filesize

    40KB

  • memory/1544-139-0x0000000004F30000-0x0000000004F40000-memory.dmp

    Filesize

    64KB

  • memory/1544-135-0x0000000004CE0000-0x0000000004D72000-memory.dmp

    Filesize

    584KB

  • memory/1544-134-0x0000000005370000-0x0000000005914000-memory.dmp

    Filesize

    5.6MB

  • memory/2972-143-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/2972-146-0x00000000052E0000-0x00000000052F0000-memory.dmp

    Filesize

    64KB

  • memory/2972-147-0x0000000006010000-0x0000000006076000-memory.dmp

    Filesize

    408KB

  • memory/2972-150-0x00000000066E0000-0x0000000006730000-memory.dmp

    Filesize

    320KB

  • memory/2972-151-0x00000000052E0000-0x00000000052F0000-memory.dmp

    Filesize

    64KB