Analysis

  • max time kernel
    124s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    27/04/2024, 17:16

General

  • Target
    99ad2380a2037d5f6abbdaa7eb19d6f2.exe
  • Size 347KB
  • Sample240427-vs4xtsdb59
  • SHA256 ac075dc158427a98750ca956666c2a7d8d25fe67cbf3512dafbab2c1d64c8018
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • stealc

C2
  • http://185.172.128.62

Attributes
  • url_path

    /902e53a07830e030.php

Signatures

  • Detect ZGRat V1 3 IoCs
  • SectopRAT

    SectopRAT is a remote access trojan first seen in November 2019.

  • SectopRAT payload 1 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 3 IoCs
  • Loads dropped DLL 16 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.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 12 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 7 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\99ad2380a2037d5f6abbdaa7eb19d6f2.exe
    "C:\Users\Admin\AppData\Local\Temp\99ad2380a2037d5f6abbdaa7eb19d6f2.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2944
    • C:\Users\Admin\AppData\Local\Temp\u29s.0.exe
      "C:\Users\Admin\AppData\Local\Temp\u29s.0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:2768
    • C:\Users\Admin\AppData\Local\Temp\u29s.2\run.exe
      "C:\Users\Admin\AppData\Local\Temp\u29s.2\run.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2536
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\SysWOW64\cmd.exe
        3⤵
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:1864
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:2628
    • C:\Users\Admin\AppData\Local\Temp\u29s.3.exe
      "C:\Users\Admin\AppData\Local\Temp\u29s.3.exe"
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2232
      • 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:1856

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        c20602a6fa9c49c2b848c1a2ac356458.tmp

        • Path C:\Users\Admin\AppData\Local\Microsoft\ApplicationInsights\f40fa09571ae3e4604ca1ef5093c12d04345052412cd199086553bfab6d3b7c7\c20602a6fa9c49c2b848c1a2ac356458.tmp
        • Size 1KB
        • SHA256 e71a3f28b905f5d2e8133d6ab6c3f47bfa2d52c1c0b75b060f508ccecad7cb7e
        • MD5 SHA1 SHA512

        U29S1~1.ZIP

        • Path C:\Users\Admin\AppData\Local\Temp\U29S1~1.ZIP
        • Size 3.7MB
        • SHA256 a1dd547a63b256aa6a16871ed03f8b025226f7617e67b8817a08444df077b001
        • MD5 SHA1 SHA512 SSDEEP

        bf724ace

        • Path C:\Users\Admin\AppData\Local\Temp\bf724ace
        • Size 1.4MB
        • SHA256 271eb56641e74fe2c13c1f64e50de005308bccaf5a8b47a7daeaff73ead040a2
        • MD5 SHA1 SHA512 SSDEEP

        ioloDMLog.txt

        • Path C:\Users\Admin\AppData\Local\Temp\iolo\dm\ioloDMLog.txt
        • Size 2KB
        • SHA256 ed87702aeae218cc9f782e5f991cb66e3d9270ff9d38f0e28097f8dab7b5102e
        • MD5 SHA1 SHA512

        ioloDMLog.txt

        • Path C:\Users\Admin\AppData\Local\Temp\iolo\dm\ioloDMLog.txt
        • Size 3KB
        • SHA256 ef4ac6a3dd18ba281be491c5a01f07fc5e3f22bb4fcf4e4d691fd433d3fbdf9c
        • MD5 SHA1 SHA512

        tmpB250.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmpB250.tmp
        • Size 20KB
        • SHA256 4d3f3194cb1133437aa69bb880c8cbb55ddf06ff61a88ca6c3f1bbfbfd35d988
        • MD5 SHA1 SHA512 SSDEEP

        UIxMarketPlugin.dll

        • Path C:\Users\Admin\AppData\Local\Temp\u29s.2\UIxMarketPlugin.dll
        • Size 1.6MB
        • SHA256 cbcea8f28d8916219d1e8b0a8ca2db17e338eb812431bc4ad0cb36c06fd67f15
        • MD5 SHA1 SHA512 SSDEEP

        bunch.dat

        • Path C:\Users\Admin\AppData\Local\Temp\u29s.2\bunch.dat
        • Size 1.3MB
        • SHA256 9387488f9d338e211be2cb45109bf590a5070180bc0d4a703f70d3cb3c4e1742
        • MD5 SHA1 SHA512 SSDEEP

        relay.dll

        • Path C:\Users\Admin\AppData\Local\Temp\u29s.2\relay.dll
        • Size 1.5MB
        • SHA256 7b2db9c88f60ed6dd24b1dec321a304564780fdb191a96ec35c051856128f1ed
        • MD5 SHA1 SHA512 SSDEEP

        run.exe

        • Path C:\Users\Admin\AppData\Local\Temp\u29s.2\run.exe
        • Size 2.4MB
        • SHA256 a05b592a971fe5011554013bcfe9a4aaf9cfc633bdd1fe3a8197f213d557b8d3
        • MD5 SHA1 SHA512 SSDEEP

        whale.dbf

        • Path C:\Users\Admin\AppData\Local\Temp\u29s.2\whale.dbf
        • Size 85KB
        • SHA256 b440170853bdb43b66497f701aee2901080326975140b095a1669cb9dee13422
        • MD5 SHA1 SHA512 SSDEEP

        mozglue.dll

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

        nss3.dll

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

        u29s.0.exe

        • Path \Users\Admin\AppData\Local\Temp\u29s.0.exe
        • Size 203KB
        • SHA256 8b6af6cb7481b58e76dde6969caf317273d72afed263fdb28f9c34a703c4acb1
        • MD5 SHA1 SHA512 SSDEEP

        u29s.3.exe

        • Path \Users\Admin\AppData\Local\Temp\u29s.3.exe
        • Size 4.6MB
        • SHA256 4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7
        • MD5 SHA1 SHA512 SSDEEP

        memory/1856-246-0x00000000003E0000-0x00000000003EC000-memory.dmp

        memory/1856-258-0x0000000000380000-0x000000000038A000-memory.dmp

        memory/1856-300-0x00000000003A0000-0x00000000003AA000-memory.dmp

        memory/1856-301-0x00000000003A0000-0x00000000003AA000-memory.dmp

        memory/1856-269-0x000000001E870000-0x000000001E87C000-memory.dmp

        memory/1856-266-0x000000001EDA0000-0x000000001EDC2000-memory.dmp

        memory/1856-265-0x000000001E860000-0x000000001E86A000-memory.dmp

        memory/1856-264-0x00000000003A0000-0x00000000003AA000-memory.dmp

        memory/1856-243-0x00000000003F0000-0x0000000003CE8000-memory.dmp

        memory/1856-244-0x000000001EBE0000-0x000000001ECF0000-memory.dmp

        memory/1856-245-0x0000000000360000-0x0000000000370000-memory.dmp

        memory/1856-262-0x000000001FD60000-0x0000000020060000-memory.dmp

        memory/1856-247-0x00000000003D0000-0x00000000003E4000-memory.dmp

        memory/1856-248-0x000000001E700000-0x000000001E724000-memory.dmp

        memory/1856-250-0x000000001E0D0000-0x000000001E0DA000-memory.dmp

        memory/1856-251-0x000000001E820000-0x000000001E84A000-memory.dmp

        memory/1856-252-0x000000001ECF0000-0x000000001EDA2000-memory.dmp

        memory/1856-253-0x00000000057F0000-0x000000000586A000-memory.dmp

        memory/1856-254-0x0000000003DF0000-0x0000000003E52000-memory.dmp

        memory/1864-196-0x00000000770A0000-0x0000000077249000-memory.dmp

        memory/1864-302-0x0000000073C60000-0x0000000073DD4000-memory.dmp

        memory/2232-197-0x0000000000400000-0x00000000008AD000-memory.dmp

        memory/2536-133-0x00000000770A0000-0x0000000077249000-memory.dmp

        memory/2536-132-0x0000000073C60000-0x0000000073DD4000-memory.dmp

        memory/2536-181-0x0000000073C60000-0x0000000073DD4000-memory.dmp

        memory/2628-310-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

        memory/2628-312-0x0000000000080000-0x0000000000146000-memory.dmp

        memory/2628-309-0x0000000072620000-0x0000000073682000-memory.dmp

        memory/2628-311-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

        memory/2768-185-0x0000000000400000-0x0000000002AF0000-memory.dmp

        memory/2768-94-0x0000000061E00000-0x0000000061EF3000-memory.dmp

        memory/2768-293-0x0000000000400000-0x0000000002AF0000-memory.dmp

        memory/2768-299-0x0000000000400000-0x0000000002AF0000-memory.dmp

        memory/2944-153-0x0000000000400000-0x0000000002B15000-memory.dmp

        memory/2944-3-0x0000000000400000-0x0000000002B15000-memory.dmp

        memory/2944-2-0x0000000000230000-0x000000000029D000-memory.dmp

        memory/2944-154-0x0000000002F60000-0x0000000003060000-memory.dmp

        memory/2944-1-0x0000000002F60000-0x0000000003060000-memory.dmp