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Analysis

  • max time kernel
    35s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    27/10/2024, 22:31

General

  • Target

    RemittanceReceipt.exe

  • Size

    698KB

  • MD5

    db9a323fde82eac0d972eec0acde0209

  • SHA1

    88ead16576193df0d647c722d70b79f50300e852

  • SHA256

    e93171125e897ba3a556f1b0171629d2a9aaa3298510f97b5d7cda44b9c3c313

  • SHA512

    d22a3073ea9d5c6111e61200521fa9453fc5c5814a4cd64595d5d297c6c5f9d2b5d186d10700728d19087a72c8c392a87797ffe5a48440a42165b095f12204ad

  • SSDEEP

    12288:KCfiaaMHHsczu6ko6E52x82u6/DsXsW7mbXt8V8XME+L:KYi5MH1z9J2du6LsXGtm8Ra

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Agenttesla family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Looks up external IP address via web service 2 IoCs

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

  • 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 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RemittanceReceipt.exe
    "C:\Users\Admin\AppData\Local\Temp\RemittanceReceipt.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2424
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\RemittanceReceipt.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2940
    • C:\Users\Admin\AppData\Local\Temp\RemittanceReceipt.exe
      "C:\Users\Admin\AppData\Local\Temp\RemittanceReceipt.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2508

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2424-0-0x00000000748BE000-0x00000000748BF000-memory.dmp

    Filesize

    4KB

  • memory/2424-1-0x0000000000B40000-0x0000000000BF4000-memory.dmp

    Filesize

    720KB

  • memory/2424-2-0x00000000748B0000-0x0000000074F9E000-memory.dmp

    Filesize

    6.9MB

  • memory/2424-3-0x0000000000590000-0x00000000005AE000-memory.dmp

    Filesize

    120KB

  • memory/2424-4-0x00000000748BE000-0x00000000748BF000-memory.dmp

    Filesize

    4KB

  • memory/2424-5-0x00000000748B0000-0x0000000074F9E000-memory.dmp

    Filesize

    6.9MB

  • memory/2424-6-0x000000000A320000-0x000000000A3A2000-memory.dmp

    Filesize

    520KB

  • memory/2424-22-0x00000000748B0000-0x0000000074F9E000-memory.dmp

    Filesize

    6.9MB

  • memory/2508-15-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2508-19-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2508-17-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2508-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2508-12-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2508-11-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2508-7-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2508-20-0x00000000748B0000-0x0000000074F9E000-memory.dmp

    Filesize

    6.9MB

  • memory/2508-9-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2508-21-0x00000000748B0000-0x0000000074F9E000-memory.dmp

    Filesize

    6.9MB

  • memory/2508-25-0x00000000748B0000-0x0000000074F9E000-memory.dmp

    Filesize

    6.9MB