Analysis

  • max time kernel
    117s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    27-03-2024 20:40

General

  • Target

    tmp.exe

  • Size

    340KB

  • MD5

    845971e68786f9c59ad9e4d5b7a2b1fe

  • SHA1

    619a41e8a05c9f1f8aa56684e6578f9efd2acf0f

  • SHA256

    e749697baf047ee9b5261865ffb43b8b92e77288f9d764798d00c2fd685ca573

  • SHA512

    c00e5cc5bc66c3ef5e078330aa26d5a6c29cd76c611418c3bf16e6f1d25693974757e97cd689c7a587d9a3c4ddecf6c90bd8be7f7015d082987cdc6e1683400b

  • SSDEEP

    6144:c8k80ckeOTFIdzXdVufRrLivwburclAp07IdY:c8k80ckeaId65LswburcypJ

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot7178103238:AAFpcijMmYeMlJJVnAmpmroCaHuSs5YlbxU/

Extracted

Family

xworm

C2

127.0.0.1:5000

51.89.241.91:5000

Attributes
  • Install_directory

    %Public%

  • install_file

    Adobe Cloud.exe

  • telegram

    https://api.telegram.org/bot5474576959:AAEFEPb7hmHEmq_ZM_jasyYk46DECm44Sm0/sendMessage?chat_id=1412104349

Signatures

  • AgentTesla

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

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 3 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2028
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Adobe Cloud.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Adobe Cloud.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2684
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Adobe Cloud" /tr "C:\Users\Public\Adobe Cloud.exe"
        3⤵
        • Creates scheduled task(s)
        PID:892
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {BE1B4800-DB54-4999-8644-606ADD3A0ADC} S-1-5-21-2721934792-624042501-2768869379-1000:BISMIZHX\Admin:Interactive:[1]
    1⤵
      PID:2388

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • \Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Adobe Cloud.exe

      Filesize

      66KB

      MD5

      43a6696dfbd330e7a31b6fea5c221355

      SHA1

      0e7344b329e0d188a5bb39179822cd94a2d94296

      SHA256

      d9275381bfa7cb754b86f2610ac3e0885d0f38a837e7173a5b45edc8912b607a

      SHA512

      b741612a7623982c1ae727bf96c004825675e5bd3fb701638b98eca67dc27b19db6202803ad54894e573e61f036466959b7f022e3dad4c62a3ae358130ffaedc

    • memory/2028-0-0x0000000000D60000-0x0000000000DBC000-memory.dmp

      Filesize

      368KB

    • memory/2028-1-0x0000000074D90000-0x000000007547E000-memory.dmp

      Filesize

      6.9MB

    • memory/2028-2-0x00000000049C0000-0x0000000004A00000-memory.dmp

      Filesize

      256KB

    • memory/2028-18-0x0000000074D90000-0x000000007547E000-memory.dmp

      Filesize

      6.9MB

    • memory/2028-19-0x00000000049C0000-0x0000000004A00000-memory.dmp

      Filesize

      256KB

    • memory/2684-11-0x00000000001B0000-0x00000000001C6000-memory.dmp

      Filesize

      88KB

    • memory/2684-12-0x000007FEF5DA0000-0x000007FEF678C000-memory.dmp

      Filesize

      9.9MB

    • memory/2684-17-0x000000001B080000-0x000000001B100000-memory.dmp

      Filesize

      512KB

    • memory/2684-20-0x000007FEF5DA0000-0x000007FEF678C000-memory.dmp

      Filesize

      9.9MB

    • memory/2684-21-0x000000001B080000-0x000000001B100000-memory.dmp

      Filesize

      512KB