Analysis

  • max time kernel
    98s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 11:20

General

  • Target

    Order-Item list.exe

  • Size

    596KB

  • MD5

    e50062929312e517c158965db1858662

  • SHA1

    37a0bf7c126c5bd4ab90bb183c38248983cd3d66

  • SHA256

    af905972a17e26abbcdb1b00d7ce10499707d2a3c42f5a9584a4823adf1a1c0e

  • SHA512

    84afc4560779f303e3a4e00dc64aa24bda50eed1ec6711d69917a3a5cf79963fd44829ef9ab6ad260b902052836f28d19c488439f52c2456a88a8c0e4cab0ad0

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.pkfpmes.co.ke
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    }79ngu!.Bzo7

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.pkfpmes.co.ke
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    }79ngu!.Bzo7

Signatures

  • AgentTesla

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

  • suricata: ET MALWARE AgentTesla Exfil Via SMTP

    suricata: ET MALWARE AgentTesla Exfil Via SMTP

  • AgentTesla Payload 1 IoCs
  • 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
  • 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.

  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Order-Item list.exe
    "C:\Users\Admin\AppData\Local\Temp\Order-Item list.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1540
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4D16.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4712
    • C:\Users\Admin\AppData\Local\Temp\Order-Item list.exe
      "{path}"
      2⤵
      • Drops file in Drivers directory
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:4400
      • C:\Windows\SysWOW64\REG.exe
        REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System / v DisableTaskMgr / t REG_DWORD / d 1 / f
        3⤵
        • Modifies registry key
        PID:1868

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Order-Item list.exe.log
    Filesize

    611B

    MD5

    e09032fb626c6c1d10e2ab27b0278463

    SHA1

    a26ea328ef81ab53a9883f7b9c7d3998883eaf47

    SHA256

    1b834fc0faded24ae9665629c739742a2614784d62f96f9f982a6c678e916147

    SHA512

    2c341b371103d67fb0bd1e49a4a07b3037e3a304b914446c103de43f87370d584e666f0b93e2c28c776188e975cd95855bb3a1bc4ddbcac89acd62ec46cb5e35

  • C:\Users\Admin\AppData\Local\Temp\tmp4D16.tmp
    Filesize

    1KB

    MD5

    ab9f8a9574d9209cd8666decb37e33cc

    SHA1

    b768b98d37b96bcf5eeeb4bae10589a196b66db2

    SHA256

    2c052172f943620c36053efd2ab1d6ef9fbb671c55669b9f49430f0f7acd7704

    SHA512

    5059538580cce17a2c7516e3117297310455e38ff32d51c6e17ef188448ce3567f9c968ad478df725ed2ce8630ceee2340246264a6e60877895591a67d45da70

  • memory/1540-131-0x0000000004DD0000-0x0000000004E6C000-memory.dmp
    Filesize

    624KB

  • memory/1540-132-0x0000000004FC0000-0x0000000005052000-memory.dmp
    Filesize

    584KB

  • memory/1540-130-0x00000000003E0000-0x000000000047C000-memory.dmp
    Filesize

    624KB

  • memory/1868-141-0x0000000000000000-mapping.dmp
  • memory/4400-139-0x0000000005D20000-0x0000000005D86000-memory.dmp
    Filesize

    408KB

  • memory/4400-136-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/4400-138-0x0000000005D90000-0x0000000006334000-memory.dmp
    Filesize

    5.6MB

  • memory/4400-135-0x0000000000000000-mapping.dmp
  • memory/4400-140-0x0000000006A00000-0x0000000006A50000-memory.dmp
    Filesize

    320KB

  • memory/4400-142-0x0000000006CA0000-0x0000000006CAA000-memory.dmp
    Filesize

    40KB

  • memory/4712-133-0x0000000000000000-mapping.dmp