Analysis

  • max time kernel
    131s
  • max time network
    132s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    05/05/2024, 15:00

General

  • Target
    f901ec0e346db59fd39c83d204281ecd342787be99a2c70b3a172d49f99caada.exe
  • Size 398KB
  • Sample240505-sdp41sdc9v
  • SHA256 f901ec0e346db59fd39c83d204281ecd342787be99a2c70b3a172d49f99caada
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • stealc

C2
  • http://185.172.128.150

Attributes
  • url_path

    /c698e1bc8a2f5e6d.php

Signatures

  • Detect ZGRat V1 3 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • ZGRat

    ZGRat is remote access trojan written in C#.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 7 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f901ec0e346db59fd39c83d204281ecd342787be99a2c70b3a172d49f99caada.exe
    "C:\Users\Admin\AppData\Local\Temp\f901ec0e346db59fd39c83d204281ecd342787be99a2c70b3a172d49f99caada.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3132
    • C:\Users\Admin\AppData\Local\Temp\u2f0.0.exe
      "C:\Users\Admin\AppData\Local\Temp\u2f0.0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:1484
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1484 -s 2436
        3⤵
        • Program crash
        PID:2932
    • C:\Users\Admin\AppData\Local\Temp\u2f0.1.exe
      "C:\Users\Admin\AppData\Local\Temp\u2f0.1.exe"
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:772
      • C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
        "C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe" /eieci=11A12794-499E-4FA0-A281-A9A9AA8B2685 /eipi=5488CB36-BE62-4606-B07B-2EE938868BD1
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5056
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3132 -s 960
      2⤵
      • Program crash
      PID:1900
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3132 -ip 3132
    1⤵
      PID:888
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1484 -ip 1484
      1⤵
        PID:704

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            Are.docx

            • Path C:\ProgramData\Are.docx
            • Size 11KB
            • SHA256 5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454
            • MD5 SHA1 SHA512 SSDEEP

            mozglue.dll

            • Path C:\ProgramData\mozglue.dll
            • Size 593KB
            • SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
            • MD5 SHA1 SHA512 SSDEEP

            nss3.dll

            • Path C:\ProgramData\nss3.dll
            • Size 2.0MB
            • SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
            • MD5 SHA1 SHA512 SSDEEP

            u2f0.0.exe

            • Path C:\Users\Admin\AppData\Local\Temp\u2f0.0.exe
            • Size 274KB
            • SHA256 c2743b008dc73aa0655b5034063be0227b2b17cc0d957b2d8139b934a2558d1f
            • MD5 SHA1 SHA512 SSDEEP

            u2f0.1.exe

            • Path C:\Users\Admin\AppData\Local\Temp\u2f0.1.exe
            • Size 4.6MB
            • SHA256 4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7
            • MD5 SHA1 SHA512 SSDEEP

            memory/772-59-0x0000000000400000-0x00000000008AD000-memory.dmp

            memory/772-63-0x0000000000400000-0x00000000008AD000-memory.dmp

            memory/1484-176-0x0000000000400000-0x0000000002B02000-memory.dmp

            memory/1484-60-0x0000000000400000-0x0000000002B02000-memory.dmp

            memory/1484-169-0x0000000000400000-0x0000000002B02000-memory.dmp

            memory/1484-135-0x0000000000400000-0x0000000002B02000-memory.dmp

            memory/1484-70-0x0000000061E00000-0x0000000061EF3000-memory.dmp

            memory/3132-33-0x00000000030A0000-0x000000000310C000-memory.dmp

            memory/3132-34-0x0000000000400000-0x000000000046F000-memory.dmp

            memory/3132-27-0x0000000000400000-0x0000000002B21000-memory.dmp

            memory/3132-1-0x0000000002D60000-0x0000000002E60000-memory.dmp

            memory/3132-3-0x0000000000400000-0x000000000046F000-memory.dmp

            memory/3132-2-0x00000000030A0000-0x000000000310C000-memory.dmp

            memory/5056-88-0x0000024AF9390000-0x0000024AF9442000-memory.dmp

            memory/5056-119-0x0000024A98300000-0x0000024A98322000-memory.dmp

            memory/5056-86-0x0000024AF9090000-0x0000024AF909A000-memory.dmp

            memory/5056-89-0x0000024AF9440000-0x0000024AF94BA000-memory.dmp

            memory/5056-90-0x0000024AF94C0000-0x0000024AF9522000-memory.dmp

            memory/5056-91-0x0000024AF95A0000-0x0000024AF9616000-memory.dmp

            memory/5056-92-0x0000024AF90D0000-0x0000024AF90DA000-memory.dmp

            memory/5056-96-0x0000024AF9620000-0x0000024AF9920000-memory.dmp

            memory/5056-115-0x0000024AFD290000-0x0000024AFD298000-memory.dmp

            memory/5056-117-0x0000024AFD2A0000-0x0000024AFD2AE000-memory.dmp

            memory/5056-116-0x0000024AFD980000-0x0000024AFD9B8000-memory.dmp

            memory/5056-87-0x0000024AF9360000-0x0000024AF938A000-memory.dmp

            memory/5056-118-0x0000024A98580000-0x0000024A9858A000-memory.dmp

            memory/5056-120-0x0000024A98AC0000-0x0000024A98FE8000-memory.dmp

            memory/5056-123-0x0000024AFDE40000-0x0000024AFDE90000-memory.dmp

            memory/5056-124-0x0000024A98320000-0x0000024A9832C000-memory.dmp

            memory/5056-134-0x0000024AFD9C0000-0x0000024AFD9E2000-memory.dmp

            memory/5056-136-0x0000024AFD960000-0x0000024AFD97E000-memory.dmp

            memory/5056-66-0x0000024AF8FE0000-0x0000024AF8FF0000-memory.dmp

            memory/5056-67-0x0000024AF9000000-0x0000024AF900C000-memory.dmp

            memory/5056-68-0x0000024AF8FF0000-0x0000024AF9004000-memory.dmp

            memory/5056-69-0x0000024AF9060000-0x0000024AF9084000-memory.dmp

            memory/5056-65-0x0000024AF90F0000-0x0000024AF9200000-memory.dmp

            memory/5056-64-0x0000024AF3050000-0x0000024AF6948000-memory.dmp