Analysis

  • max time kernel
    195s
  • max time network
    183s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    15-04-2022 12:25

General

  • Target

    7f2de255697206b9992e862bce8c0235f0dd6633191969fc8166223a3b57cc49.exe

  • Size

    586KB

  • MD5

    867e0954cf78d21d9c5968fd484baf9c

  • SHA1

    c732ca209637256084553cb598581028d3c69ba3

  • SHA256

    7f2de255697206b9992e862bce8c0235f0dd6633191969fc8166223a3b57cc49

  • SHA512

    cecb5fd1737a9e976a81317696b582bdfea0970a3f01bfa562ec0d675e4b99cc81558bec63d46c9393481070f41121238fcb69622886a804079016539c3ae28c

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.p0lybrands.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    MNOMcpt7

Signatures

  • AgentTesla

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

  • Meta Stealer Stealer

    Meta Stealer steals passwords stored in browsers, written in C++.

  • AgentTesla Payload 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
  • 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 WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7f2de255697206b9992e862bce8c0235f0dd6633191969fc8166223a3b57cc49.exe
    "C:\Users\Admin\AppData\Local\Temp\7f2de255697206b9992e862bce8c0235f0dd6633191969fc8166223a3b57cc49.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1380
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bAwXFyN" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD6.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:928
    • C:\Users\Admin\AppData\Local\Temp\7f2de255697206b9992e862bce8c0235f0dd6633191969fc8166223a3b57cc49.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2452

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpD6.tmp

    Filesize

    1KB

    MD5

    a627b40c3362ec171e63b5c63ab3a980

    SHA1

    ef20651dd14f59d4e49c1d69540120e3fb2bdbc0

    SHA256

    d74bfec079696bfd114e9d69d5f016710718cc56d725fea3e42c2bee22cb40de

    SHA512

    d1bf697779a6325c5a3786f207e880d1f2e291d30fcdd3dfaaad57db46bfc50a0496f41146ff62b9f0e7954fd7b067c843e90589ed375b75c973db4052cec9db

  • memory/1380-130-0x0000000000E70000-0x0000000000F08000-memory.dmp

    Filesize

    608KB

  • memory/1380-131-0x0000000005F60000-0x0000000006504000-memory.dmp

    Filesize

    5.6MB

  • memory/1380-132-0x00000000058A0000-0x0000000005932000-memory.dmp

    Filesize

    584KB

  • memory/1380-133-0x0000000005950000-0x000000000595A000-memory.dmp

    Filesize

    40KB

  • memory/1380-134-0x0000000009610000-0x0000000009B3C000-memory.dmp

    Filesize

    5.2MB

  • memory/1380-135-0x0000000009DD0000-0x0000000009E6C000-memory.dmp

    Filesize

    624KB

  • memory/2452-139-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2452-140-0x0000000006360000-0x00000000063C6000-memory.dmp

    Filesize

    408KB

  • memory/2452-141-0x0000000002C00000-0x0000000002C50000-memory.dmp

    Filesize

    320KB