Analysis

  • max time kernel
    131s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-03-2024 16:31

General

  • Target

    3fa704055adc942da4b007babceeffbc_JaffaCakes118.exe

  • Size

    399KB

  • MD5

    3fa704055adc942da4b007babceeffbc

  • SHA1

    9505a1601f65f227167aafee101c1dd042e8d3eb

  • SHA256

    252000fc9c9a045eaf95df97586560bdd0c54dccb2de64fe2197d0a4b4069b0b

  • SHA512

    8ebf40c90f7c853a4c5ccc68becf50ff31ff4188188c08066810ff1d0ed063c6cc6f5223982ca0f277ee9450b49405d65dfe593ef32653fa1b184b1d3d024601

  • SSDEEP

    12288:8gSB31kgvUjSkSMm4BrxhLGEdylu5BqdlIxH:gB3GgcjSCm4pxceUufMl

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.lahaciendamontericogrande.com.pe
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    e$$

Signatures

  • AgentTesla

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

  • AgentTesla payload 1 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 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\3fa704055adc942da4b007babceeffbc_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\3fa704055adc942da4b007babceeffbc_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2112
    • C:\Users\Admin\AppData\Local\Temp\3fa704055adc942da4b007babceeffbc_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\3fa704055adc942da4b007babceeffbc_JaffaCakes118.exe"
      2⤵
        PID:232
      • C:\Users\Admin\AppData\Local\Temp\3fa704055adc942da4b007babceeffbc_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\3fa704055adc942da4b007babceeffbc_JaffaCakes118.exe"
        2⤵
        • Drops file in Drivers directory
        • Accesses Microsoft Outlook profiles
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:3256
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3748 --field-trial-handle=2240,i,16875000905773190493,11379096115878622792,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:4480

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      Persistence

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Privilege Escalation

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Defense Evasion

      Modify Registry

      1
      T1112

      Credential Access

      Unsecured Credentials

      4
      T1552

      Credentials In Files

      3
      T1552.001

      Credentials in Registry

      1
      T1552.002

      Collection

      Data from Local System

      4
      T1005

      Email Collection

      1
      T1114

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\3fa704055adc942da4b007babceeffbc_JaffaCakes118.exe.log
        Filesize

        1KB

        MD5

        8ec831f3e3a3f77e4a7b9cd32b48384c

        SHA1

        d83f09fd87c5bd86e045873c231c14836e76a05c

        SHA256

        7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

        SHA512

        26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

      • memory/2112-10-0x0000000006550000-0x00000000065B0000-memory.dmp
        Filesize

        384KB

      • memory/2112-5-0x0000000004DB0000-0x0000000004DBA000-memory.dmp
        Filesize

        40KB

      • memory/2112-16-0x00000000750F0000-0x00000000758A0000-memory.dmp
        Filesize

        7.7MB

      • memory/2112-4-0x0000000002760000-0x0000000002770000-memory.dmp
        Filesize

        64KB

      • memory/2112-0-0x0000000000380000-0x00000000003EA000-memory.dmp
        Filesize

        424KB

      • memory/2112-6-0x0000000005080000-0x000000000508A000-memory.dmp
        Filesize

        40KB

      • memory/2112-7-0x00000000750F0000-0x00000000758A0000-memory.dmp
        Filesize

        7.7MB

      • memory/2112-8-0x0000000002760000-0x0000000002770000-memory.dmp
        Filesize

        64KB

      • memory/2112-9-0x0000000006310000-0x00000000063AC000-memory.dmp
        Filesize

        624KB

      • memory/2112-1-0x00000000750F0000-0x00000000758A0000-memory.dmp
        Filesize

        7.7MB

      • memory/2112-3-0x0000000004E00000-0x0000000004E92000-memory.dmp
        Filesize

        584KB

      • memory/2112-2-0x0000000005480000-0x0000000005A24000-memory.dmp
        Filesize

        5.6MB

      • memory/3256-14-0x00000000750F0000-0x00000000758A0000-memory.dmp
        Filesize

        7.7MB

      • memory/3256-15-0x0000000005130000-0x0000000005140000-memory.dmp
        Filesize

        64KB

      • memory/3256-11-0x0000000000400000-0x000000000043C000-memory.dmp
        Filesize

        240KB

      • memory/3256-17-0x0000000005100000-0x0000000005118000-memory.dmp
        Filesize

        96KB

      • memory/3256-18-0x0000000005CF0000-0x0000000005D56000-memory.dmp
        Filesize

        408KB

      • memory/3256-20-0x00000000750F0000-0x00000000758A0000-memory.dmp
        Filesize

        7.7MB

      • memory/3256-21-0x0000000005130000-0x0000000005140000-memory.dmp
        Filesize

        64KB

      • memory/3256-23-0x0000000006270000-0x00000000062C0000-memory.dmp
        Filesize

        320KB

      • memory/3256-24-0x0000000005130000-0x0000000005140000-memory.dmp
        Filesize

        64KB