Analysis

  • max time kernel
    118s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    29-08-2024 20:04

General

  • Target

    PI-897657546.exe

  • Size

    619KB

  • MD5

    bce45e9ce0d7582aadf9258a7f2c11d4

  • SHA1

    e6364b28735b2612a871f13bbe0186775a6f3dbd

  • SHA256

    7e6df8e621709bf5a958031c2826bc1dccc91cc36fc47e783504342061f7f67c

  • SHA512

    9704c9c52a77e04d6f6d54e73ff7acfc4bb2b69cff20f44d2bfaa15154fa8935d7e3a893a5645bccba2af74fc00e9c4f606e4432d665bec74f5362ac7a6cc348

  • SSDEEP

    6144:3aUPSc6VEJD6LpMWHPjsk3yzS5saUQq4MKtPxXJ6/mydrhCfiOp90o9rL9R8:3aUb6VEt6jHrr33qvKJ9JCoiA9RPA

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.totalise.co.uk
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Password1

Signatures

  • AgentTesla

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

  • AgentTesla payload 5 IoCs
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • System Binary Proxy Execution: InstallUtil 1 TTPs 2 IoCs

    Abuse InstallUtil to proxy execution of malicious code.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Obfuscated with Agile.Net obfuscator 2 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • 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.

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PI-897657546.exe
    "C:\Users\Admin\AppData\Local\Temp\PI-897657546.exe"
    1⤵
    • System Binary Proxy Execution: InstallUtil
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2456
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v zumag /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\zumag.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2448
      • C:\Windows\SysWOW64\reg.exe
        REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v zumag /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\zumag.exe"
        3⤵
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        PID:2952
    • C:\Users\Admin\AppData\Roaming\zumag.exe
      "C:\Users\Admin\AppData\Roaming\zumag.exe"
      2⤵
      • System Binary Proxy Execution: InstallUtil
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2780
      • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
        "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:2684

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

    Filesize

    40KB

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • C:\Users\Admin\AppData\Roaming\zumag.exe

    Filesize

    619KB

    MD5

    bce45e9ce0d7582aadf9258a7f2c11d4

    SHA1

    e6364b28735b2612a871f13bbe0186775a6f3dbd

    SHA256

    7e6df8e621709bf5a958031c2826bc1dccc91cc36fc47e783504342061f7f67c

    SHA512

    9704c9c52a77e04d6f6d54e73ff7acfc4bb2b69cff20f44d2bfaa15154fa8935d7e3a893a5645bccba2af74fc00e9c4f606e4432d665bec74f5362ac7a6cc348

  • memory/2456-19-0x0000000074990000-0x000000007507E000-memory.dmp

    Filesize

    6.9MB

  • memory/2456-3-0x0000000000750000-0x0000000000758000-memory.dmp

    Filesize

    32KB

  • memory/2456-4-0x0000000074990000-0x000000007507E000-memory.dmp

    Filesize

    6.9MB

  • memory/2456-5-0x0000000000770000-0x0000000000778000-memory.dmp

    Filesize

    32KB

  • memory/2456-6-0x0000000000780000-0x0000000000788000-memory.dmp

    Filesize

    32KB

  • memory/2456-8-0x000000007499E000-0x000000007499F000-memory.dmp

    Filesize

    4KB

  • memory/2456-9-0x0000000074990000-0x000000007507E000-memory.dmp

    Filesize

    6.9MB

  • memory/2456-11-0x0000000074990000-0x000000007507E000-memory.dmp

    Filesize

    6.9MB

  • memory/2456-2-0x0000000000500000-0x0000000000514000-memory.dmp

    Filesize

    80KB

  • memory/2456-0-0x000000007499E000-0x000000007499F000-memory.dmp

    Filesize

    4KB

  • memory/2456-1-0x00000000012D0000-0x0000000001370000-memory.dmp

    Filesize

    640KB

  • memory/2684-36-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/2684-38-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/2684-25-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/2684-28-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/2684-29-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/2684-31-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/2684-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2684-34-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/2780-22-0x0000000074990000-0x000000007507E000-memory.dmp

    Filesize

    6.9MB

  • memory/2780-21-0x0000000074990000-0x000000007507E000-memory.dmp

    Filesize

    6.9MB

  • memory/2780-18-0x0000000000290000-0x0000000000330000-memory.dmp

    Filesize

    640KB

  • memory/2780-39-0x0000000074990000-0x000000007507E000-memory.dmp

    Filesize

    6.9MB

  • memory/2780-20-0x0000000000390000-0x00000000003A4000-memory.dmp

    Filesize

    80KB