Analysis

  • max time kernel
    289s
  • max time network
    296s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    29/04/2024, 04:57

General

  • Target
    47134c68fce464e80209ddaffc71e17ac4852fd4ec6f26ffcf75e461ab6adc29.exe
  • Size 451KB
  • Sample240429-flmbwaba69
  • SHA256 47134c68fce464e80209ddaffc71e17ac4852fd4ec6f26ffcf75e461ab6adc29
  • 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
  • Detects Arechclient2 RAT 1 IoCs

    Arechclient2.

  • 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 17 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 11 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 2 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\47134c68fce464e80209ddaffc71e17ac4852fd4ec6f26ffcf75e461ab6adc29.exe
    "C:\Users\Admin\AppData\Local\Temp\47134c68fce464e80209ddaffc71e17ac4852fd4ec6f26ffcf75e461ab6adc29.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2028
    • C:\Users\Admin\AppData\Local\Temp\u1kc.0.exe
      "C:\Users\Admin\AppData\Local\Temp\u1kc.0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:2884
    • C:\Users\Admin\AppData\Local\Temp\u1kc.2\run.exe
      "C:\Users\Admin\AppData\Local\Temp\u1kc.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:1700
      • 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:2304
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2372
    • C:\Users\Admin\AppData\Local\Temp\u1kc.3.exe
      "C:\Users\Admin\AppData\Local\Temp\u1kc.3.exe"
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:696
      • 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:1884

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        8304883aa5ef4a7780c0a78c5855b8e9.tmp

        • Path C:\Users\Admin\AppData\Local\Microsoft\ApplicationInsights\f40fa09571ae3e4604ca1ef5093c12d04345052412cd199086553bfab6d3b7c7\8304883aa5ef4a7780c0a78c5855b8e9.tmp
        • Size 1KB
        • SHA256 3d6a1b19f64d540a82cb3331a5bd127fd4f21a19094f4805847b0b13b609271a
        • MD5 SHA1 SHA512

        U1KC1~1.ZIP

        • Path C:\Users\Admin\AppData\Local\Temp\U1KC1~1.ZIP
        • Size 2.8MB
        • SHA256 f2486c37a9ff6dab5cffc57e8a6c5fe17c16cbf67a1402c522e2be68b011e5ae
        • MD5 SHA1 SHA512 SSDEEP

        e3643f55

        • Path C:\Users\Admin\AppData\Local\Temp\e3643f55
        • Size 1.4MB
        • SHA256 7d0803d56c9da0f4ffdeae4a077a7abf083ed791782ef98921adcb202c2a4a20
        • MD5 SHA1 SHA512 SSDEEP

        tmpBE9F.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmpBE9F.tmp
        • Size 20KB
        • SHA256 4d3f3194cb1133437aa69bb880c8cbb55ddf06ff61a88ca6c3f1bbfbfd35d988
        • MD5 SHA1 SHA512 SSDEEP

        UIxMarketPlugin.dll

        • Path C:\Users\Admin\AppData\Local\Temp\u1kc.2\UIxMarketPlugin.dll
        • Size 1.6MB
        • SHA256 cbcea8f28d8916219d1e8b0a8ca2db17e338eb812431bc4ad0cb36c06fd67f15
        • MD5 SHA1 SHA512 SSDEEP

        bunch.dat

        • Path C:\Users\Admin\AppData\Local\Temp\u1kc.2\bunch.dat
        • Size 1.3MB
        • SHA256 9387488f9d338e211be2cb45109bf590a5070180bc0d4a703f70d3cb3c4e1742
        • MD5 SHA1 SHA512 SSDEEP

        relay.dll

        • Path C:\Users\Admin\AppData\Local\Temp\u1kc.2\relay.dll
        • Size 1.5MB
        • SHA256 7b2db9c88f60ed6dd24b1dec321a304564780fdb191a96ec35c051856128f1ed
        • MD5 SHA1 SHA512 SSDEEP

        whale.dbf

        • Path C:\Users\Admin\AppData\Local\Temp\u1kc.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

        u1kc.0.exe

        • Path \Users\Admin\AppData\Local\Temp\u1kc.0.exe
        • Size 302KB
        • SHA256 c032e2b1c04b5e2b9bc3ae439e75b993d1e3e03163ac6e589a50cec3745fec7e
        • MD5 SHA1 SHA512 SSDEEP

        run.exe

        • Path \Users\Admin\AppData\Local\Temp\u1kc.2\run.exe
        • Size 2.4MB
        • SHA256 a05b592a971fe5011554013bcfe9a4aaf9cfc633bdd1fe3a8197f213d557b8d3
        • MD5 SHA1 SHA512 SSDEEP

        u1kc.3.exe

        • Path \Users\Admin\AppData\Local\Temp\u1kc.3.exe
        • Size 4.6MB
        • SHA256 4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7
        • MD5 SHA1 SHA512 SSDEEP

        memory/696-235-0x0000000000400000-0x00000000008AD000-memory.dmp

        memory/1700-168-0x00000000734E0000-0x0000000073654000-memory.dmp

        memory/1700-169-0x0000000077160000-0x0000000077309000-memory.dmp

        memory/1700-221-0x00000000734E0000-0x0000000073654000-memory.dmp

        memory/1884-240-0x0000000000590000-0x00000000005A4000-memory.dmp

        memory/1884-293-0x0000000000280000-0x000000000028A000-memory.dmp

        memory/1884-308-0x0000000000BC0000-0x0000000000BCA000-memory.dmp

        memory/1884-304-0x0000000000F90000-0x0000000000F9C000-memory.dmp

        memory/1884-301-0x0000000000E10000-0x0000000000E32000-memory.dmp

        memory/1884-236-0x0000000001190000-0x0000000004A88000-memory.dmp

        memory/1884-237-0x000000001EDC0000-0x000000001EED0000-memory.dmp

        memory/1884-300-0x0000000000E00000-0x0000000000E0A000-memory.dmp

        memory/1884-239-0x00000000005A0000-0x00000000005AC000-memory.dmp

        memory/1884-241-0x000000001E2A0000-0x000000001E2C4000-memory.dmp

        memory/1884-238-0x0000000000260000-0x0000000000270000-memory.dmp

        memory/1884-267-0x000000001E7E0000-0x000000001E80A000-memory.dmp

        memory/1884-285-0x00000000007C0000-0x0000000000822000-memory.dmp

        memory/1884-278-0x000000001F8A0000-0x000000001F91A000-memory.dmp

        memory/1884-271-0x000000001F7F0000-0x000000001F8A2000-memory.dmp

        memory/1884-265-0x0000000000FC0000-0x0000000000FCA000-memory.dmp

        memory/1884-297-0x000000001FE70000-0x0000000020170000-memory.dmp

        memory/1884-299-0x0000000000BC0000-0x0000000000BCA000-memory.dmp

        memory/2028-2-0x00000000031D0000-0x000000000323D000-memory.dmp

        memory/2028-1-0x0000000000300000-0x0000000000400000-memory.dmp

        memory/2028-197-0x0000000000300000-0x0000000000400000-memory.dmp

        memory/2028-196-0x0000000000400000-0x0000000001A3C000-memory.dmp

        memory/2028-3-0x0000000000400000-0x0000000001A3C000-memory.dmp

        memory/2304-314-0x00000000734E0000-0x0000000073654000-memory.dmp

        memory/2304-242-0x0000000077160000-0x0000000077309000-memory.dmp

        memory/2372-317-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

        memory/2372-318-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

        memory/2372-316-0x0000000072470000-0x00000000734D2000-memory.dmp

        memory/2372-319-0x0000000000400000-0x00000000004C6000-memory.dmp

        memory/2884-180-0x0000000000400000-0x0000000001A17000-memory.dmp

        memory/2884-22-0x0000000061E00000-0x0000000061EF3000-memory.dmp