Analysis

  • max time kernel
    154s
  • max time network
    168s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 00:21

General

  • Target

    Fedex_Commercial Invoice.exe

  • Size

    791KB

  • MD5

    eb399d8e95e6b5d8b47eb7861d4a8631

  • SHA1

    5a737e28680097c70b94e63b40766d60776d6023

  • SHA256

    8e7934b4a6e7e21ef57fbc897a2f03cf5d487840b4434544919e40c7ba9c3021

  • SHA512

    8e93d2c755aa5b1e980082334143ab4e16eb66ddabe5c3ecb6a43a356b350c52f9ac51ae708f6bbe7987d2f09cf995f6d59cdbfbf7514e42145df29ade2d069d

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Remember@123#

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Fedex_Commercial Invoice.exe
    "C:\Users\Admin\AppData\Local\Temp\Fedex_Commercial Invoice.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2784
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\shOrItAQhQkbkF" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4FE0.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2232
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
        PID:3720
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "{path}"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3692

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp4FE0.tmp

      Filesize

      1KB

      MD5

      95f1c962f096b3be3327159ba816876c

      SHA1

      7c78a390298d1b14e456e6919da68d6e0bedee2f

      SHA256

      a4ed5fd841011b8f98aa13215b194521f2a5e4a4eef381d2a83efb6096c5f60e

      SHA512

      44ad226816438f36d771b73cebbbe07a4ac3ac79fe2e2d71416f22bede370494d54cec2e957aee3735f376f61de32c2ad9abaa52ddae0fd12b4b49b971a0c6c5

    • memory/2232-135-0x0000000000000000-mapping.dmp

    • memory/2784-130-0x0000000000E50000-0x0000000000F1A000-memory.dmp

      Filesize

      808KB

    • memory/2784-131-0x0000000005EB0000-0x0000000006454000-memory.dmp

      Filesize

      5.6MB

    • memory/2784-132-0x0000000005900000-0x0000000005992000-memory.dmp

      Filesize

      584KB

    • memory/2784-133-0x00000000058D0000-0x00000000058DA000-memory.dmp

      Filesize

      40KB

    • memory/2784-134-0x000000000DA00000-0x000000000DA9C000-memory.dmp

      Filesize

      624KB

    • memory/3692-138-0x0000000000000000-mapping.dmp

    • memory/3692-139-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/3692-140-0x00000000066B0000-0x0000000006716000-memory.dmp

      Filesize

      408KB

    • memory/3720-137-0x0000000000000000-mapping.dmp