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Resubmissions

27/12/2022, 14:34

221227-rxqn8afa54 10

27/12/2022, 14:34

221227-rxfh9afa52 10

25/12/2022, 11:46

221225-nxcwksee8w 10

Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/12/2022, 14:34

General

  • Target

    FedEx EL1870335D online Customer AWB Shipping Advisory AWB Docs.Commercial Invoice. Packing List. Bill of Landing CMS00.exe

  • Size

    883KB

  • MD5

    72c4749f756b5b7341ef425d769d6c74

  • SHA1

    ba3b0faf467c1db173c9aaf37bf69ccb30759ecb

  • SHA256

    a6339dda7fc718e5a77bb3736d1c87e6a8fbc14827525307b3e8f184f02afd48

  • SHA512

    e7b31a35f9d80b4eba17c49f875dfa32d6a6d786bbe3db22de272f6c99eb7aef8d8936d90e82cac7c7da58c34d43fd82a5374544fba5b95c3866287fe642f295

  • SSDEEP

    24576:O1VT1rXpNTgDDQmBMjerErCQtUcCMuy1HzgcK3vJc:OvNTWM4lgAcCMZzgcK3vu

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.gfrabkonline.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    siteAdmin321!$@

Signatures

  • AgentTesla

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

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • 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
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FedEx EL1870335D online Customer AWB Shipping Advisory AWB Docs.Commercial Invoice. Packing List. Bill of Landing CMS00.exe
    "C:\Users\Admin\AppData\Local\Temp\FedEx EL1870335D online Customer AWB Shipping Advisory AWB Docs.Commercial Invoice. Packing List. Bill of Landing CMS00.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2000
    • C:\Users\Admin\AppData\Local\Temp\FedEx EL1870335D online Customer AWB Shipping Advisory AWB Docs.Commercial Invoice. Packing List. Bill of Landing CMS00.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1564

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\FedEx EL1870335D online Customer AWB Shipping Advisory AWB Docs.Commercial Invoice. Packing List. Bill of Landing CMS00.exe.log

    Filesize

    1KB

    MD5

    3aea5c16a0e7b995983bd1771d5ea11d

    SHA1

    5ce845c82ace7946cec271a8bac45572b977419c

    SHA256

    8d7143472e7cf3a40f46c6346251661e10fe3a932321cff14190648ee3d9c02f

    SHA512

    4d0949cc3c0b7bc19b94a7166fb1a528c5833773b4b577f1730c4aab93ec03f3d72714ebf8a103f2a6ab4f97abef2945e78c91d464885fb4f1f9c584d7a1b243

  • memory/1564-139-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1564-141-0x0000000006ED0000-0x0000000006F20000-memory.dmp

    Filesize

    320KB

  • memory/2000-132-0x0000000000BD0000-0x0000000000CB4000-memory.dmp

    Filesize

    912KB

  • memory/2000-133-0x0000000005B90000-0x0000000006134000-memory.dmp

    Filesize

    5.6MB

  • memory/2000-134-0x0000000005680000-0x0000000005712000-memory.dmp

    Filesize

    584KB

  • memory/2000-135-0x00000000057C0000-0x000000000585C000-memory.dmp

    Filesize

    624KB

  • memory/2000-136-0x0000000005730000-0x000000000573A000-memory.dmp

    Filesize

    40KB

  • memory/2000-137-0x000000000E270000-0x000000000E2D6000-memory.dmp

    Filesize

    408KB