Analysis

  • max time kernel
    96s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 08:25

General

  • Target

    commercial invoice-AD1-2001028L.exe

  • Size

    6KB

  • MD5

    8d936312a59afa52e18a4d665755690d

  • SHA1

    aa34c27cdf073eb5c54e371714d3d68a626bbbd8

  • SHA256

    ee511bade3822feb689576b65cb3e490e9459c11c5b6583b36920f742c1bd99d

  • SHA512

    b36924fe5af405e6447fbf01d6d9c75cfe9dc335e36b64ea8982e59a1d9ac48dde4855f5c84cdcc21fb4d4dcbbfca1e485bbd32f04b10d67c1dc577aab9abd65

  • SSDEEP

    96:awqkGAzKfGe7DVys+BWfik85EOd/vSGQeMFnU:N4DUDEPYEOdES

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 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
  • 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). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 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\commercial invoice-AD1-2001028L.exe
    "C:\Users\Admin\AppData\Local\Temp\commercial invoice-AD1-2001028L.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2500
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQA3AA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1432
    • C:\Users\Admin\AppData\Local\Temp\commercial invoice-AD1-2001028L.exe
      "C:\Users\Admin\AppData\Local\Temp\commercial invoice-AD1-2001028L.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:4580

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\commercial invoice-AD1-2001028L.exe.log

    Filesize

    1KB

    MD5

    026fb31495d30e5dbfd00f398c2efbf8

    SHA1

    9cda8f5f58129e4d592ca1b9867835c86f38ab1b

    SHA256

    b008f16eeae90b4c6ba119fb308616c0795cdaca51adf2b64470a0c01aeeb8b7

    SHA512

    6d1cc01c90613522cfb7be7ea67ff03732b367dfc7bfd245ad6d7ea8e5e5def431b3339d17893b7b193cee2c3b4c22a459acd3d852ee88fce711e30c5af195a1

  • memory/1432-140-0x00000000053E0000-0x0000000005446000-memory.dmp

    Filesize

    408KB

  • memory/1432-137-0x0000000002460000-0x0000000002496000-memory.dmp

    Filesize

    216KB

  • memory/1432-141-0x0000000005A30000-0x0000000005A4E000-memory.dmp

    Filesize

    120KB

  • memory/1432-136-0x0000000000000000-mapping.dmp

  • memory/1432-142-0x0000000007220000-0x000000000789A000-memory.dmp

    Filesize

    6.5MB

  • memory/1432-138-0x0000000004DB0000-0x00000000053D8000-memory.dmp

    Filesize

    6.2MB

  • memory/1432-139-0x0000000004C00000-0x0000000004C66000-memory.dmp

    Filesize

    408KB

  • memory/1432-143-0x0000000005F20000-0x0000000005F3A000-memory.dmp

    Filesize

    104KB

  • memory/2500-135-0x0000000005AB0000-0x0000000005AD2000-memory.dmp

    Filesize

    136KB

  • memory/2500-134-0x0000000006030000-0x00000000065D4000-memory.dmp

    Filesize

    5.6MB

  • memory/2500-132-0x0000000000270000-0x0000000000278000-memory.dmp

    Filesize

    32KB

  • memory/2500-133-0x00000000059E0000-0x0000000005A72000-memory.dmp

    Filesize

    584KB

  • memory/4580-144-0x0000000000000000-mapping.dmp

  • memory/4580-145-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/4580-147-0x0000000005710000-0x00000000057AC000-memory.dmp

    Filesize

    624KB

  • memory/4580-148-0x0000000006E90000-0x0000000006EE0000-memory.dmp

    Filesize

    320KB

  • memory/4580-149-0x0000000007300000-0x000000000730A000-memory.dmp

    Filesize

    40KB