Analysis

  • max time kernel
    133s
  • max time network
    134s
  • platform
    windows10_x64
  • resource
    win10-en-20211104
  • submitted
    02-12-2021 12:05

General

  • Target

    Proforma_Invoice_CNIC109908_pdf.exe

  • Size

    463KB

  • MD5

    7a512365c3d8af5c082d0d6598969153

  • SHA1

    b2cb0b6042bda317a9be63128e612e4014ac4475

  • SHA256

    a13e7df444d6f5105bb519d6167b282aff4d3ba90801bada293d0ea83e2590d8

  • SHA512

    9738ccf59313d8f59dd7125db73fc6a9301a5499f9fb0d5b939c2212c006c3383e33c473d9f092a4f5b8f604ce6c847853ff4b918f75ec96b17455d934b0134e

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.huiijingco.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    zVYrdtq4

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • Looks for VMWare Tools registry key 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • 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
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

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

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

  • Suspicious behavior: EnumeratesProcesses 5 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\Proforma_Invoice_CNIC109908_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Proforma_Invoice_CNIC109908_pdf.exe"
    1⤵
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3708
    • 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\Proforma_Invoice_CNIC109908_pdf.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3956
    • C:\Users\Admin\AppData\Local\Temp\Proforma_Invoice_CNIC109908_pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Proforma_Invoice_CNIC109908_pdf.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:608

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/608-148-0x0000000004F60000-0x0000000004F61000-memory.dmp

    Filesize

    4KB

  • memory/608-134-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/608-135-0x0000000000436C3E-mapping.dmp

  • memory/3708-121-0x0000000004B40000-0x0000000004B41000-memory.dmp

    Filesize

    4KB

  • memory/3708-123-0x0000000004E10000-0x0000000004E18000-memory.dmp

    Filesize

    32KB

  • memory/3708-124-0x0000000004F60000-0x0000000004F61000-memory.dmp

    Filesize

    4KB

  • memory/3708-125-0x0000000004B20000-0x0000000004B21000-memory.dmp

    Filesize

    4KB

  • memory/3708-118-0x0000000000230000-0x0000000000231000-memory.dmp

    Filesize

    4KB

  • memory/3708-127-0x0000000005A80000-0x0000000005AE8000-memory.dmp

    Filesize

    416KB

  • memory/3708-120-0x0000000005040000-0x0000000005041000-memory.dmp

    Filesize

    4KB

  • memory/3708-129-0x0000000005B60000-0x0000000005B61000-memory.dmp

    Filesize

    4KB

  • memory/3708-126-0x00000000058E0000-0x00000000058E1000-memory.dmp

    Filesize

    4KB

  • memory/3708-122-0x0000000004AE0000-0x0000000004AE1000-memory.dmp

    Filesize

    4KB

  • memory/3956-128-0x0000000000000000-mapping.dmp

  • memory/3956-146-0x00000000071C0000-0x00000000071C1000-memory.dmp

    Filesize

    4KB

  • memory/3956-138-0x0000000007100000-0x0000000007101000-memory.dmp

    Filesize

    4KB

  • memory/3956-131-0x00000000044D0000-0x00000000044D1000-memory.dmp

    Filesize

    4KB

  • memory/3956-130-0x00000000044D0000-0x00000000044D1000-memory.dmp

    Filesize

    4KB

  • memory/3956-132-0x0000000004600000-0x0000000004601000-memory.dmp

    Filesize

    4KB

  • memory/3956-140-0x0000000006BB0000-0x0000000006BB1000-memory.dmp

    Filesize

    4KB

  • memory/3956-142-0x0000000006BB2000-0x0000000006BB3000-memory.dmp

    Filesize

    4KB

  • memory/3956-145-0x0000000007B30000-0x0000000007B31000-memory.dmp

    Filesize

    4KB

  • memory/3956-133-0x00000000071F0000-0x00000000071F1000-memory.dmp

    Filesize

    4KB

  • memory/3956-147-0x0000000008250000-0x0000000008251000-memory.dmp

    Filesize

    4KB

  • memory/3956-136-0x0000000007060000-0x0000000007061000-memory.dmp

    Filesize

    4KB

  • memory/3956-149-0x00000000080F0000-0x00000000080F1000-memory.dmp

    Filesize

    4KB

  • memory/3956-150-0x00000000044D0000-0x00000000044D1000-memory.dmp

    Filesize

    4KB

  • memory/3956-157-0x00000000090C0000-0x00000000090F3000-memory.dmp

    Filesize

    204KB

  • memory/3956-164-0x00000000090A0000-0x00000000090A1000-memory.dmp

    Filesize

    4KB

  • memory/3956-169-0x0000000009200000-0x0000000009201000-memory.dmp

    Filesize

    4KB

  • memory/3956-170-0x0000000009410000-0x0000000009411000-memory.dmp

    Filesize

    4KB

  • memory/3956-171-0x000000007E990000-0x000000007E991000-memory.dmp

    Filesize

    4KB

  • memory/3956-172-0x0000000006BB3000-0x0000000006BB4000-memory.dmp

    Filesize

    4KB