Analysis

  • max time kernel
    141s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/04/2024, 01:23

General

  • Target
    57f4ce0fa0844920255db559d1325848460a4d1f55dc674b41542ec4053cb205.exe
  • Size 448KB
  • Sample240430-brtwpagb84
  • SHA256 57f4ce0fa0844920255db559d1325848460a4d1f55dc674b41542ec4053cb205
  • 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
  • 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#.

  • Detect binaries embedding considerable number of MFA browser extension IDs. 5 IoCs
  • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 5 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 4 IoCs
  • Detects encrypted or obfuscated .NET executables 1 IoCs
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 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).

  • 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 30 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 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\57f4ce0fa0844920255db559d1325848460a4d1f55dc674b41542ec4053cb205.exe
    "C:\Users\Admin\AppData\Local\Temp\57f4ce0fa0844920255db559d1325848460a4d1f55dc674b41542ec4053cb205.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4456
    • C:\Users\Admin\AppData\Local\Temp\u3fs.0.exe
      "C:\Users\Admin\AppData\Local\Temp\u3fs.0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:2372
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 2292
        3⤵
        • Program crash
        PID:2256
    • C:\Users\Admin\AppData\Local\Temp\u3fs.2\run.exe
      "C:\Users\Admin\AppData\Local\Temp\u3fs.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:1980
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\SysWOW64\cmd.exe
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:5028
        • 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:4684
    • C:\Users\Admin\AppData\Local\Temp\u3fs.3.exe
      "C:\Users\Admin\AppData\Local\Temp\u3fs.3.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1184
      • 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:1016
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4456 -s 1752
      2⤵
      • Program crash
      PID:4268
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4456 -ip 4456
    1⤵
      PID:3088
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2372 -ip 2372
      1⤵
        PID:3536

      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

            d572ce10

            • Path C:\Users\Admin\AppData\Local\Temp\d572ce10
            • Size 1.4MB
            • SHA256 c432797be1254a82233b0dff078da79078b13cc1a232c811a4050bf84f9b263d
            • MD5 SHA1 SHA512 SSDEEP

            ioloDMLog.txt

            • Path C:\Users\Admin\AppData\Local\Temp\iolo\dm\ioloDMLog.txt
            • Size 2KB
            • SHA256 e8ec1aa1fbef315f12ae1a72c1dace35464fd034461a898dacc7725dc3e89785
            • MD5 SHA1 SHA512

            ioloDMLog.txt

            • Path C:\Users\Admin\AppData\Local\Temp\iolo\dm\ioloDMLog.txt
            • Size 3KB
            • SHA256 8d458e6ce15ad2e69fa876530435a6c68d608e0d16a9887b33c7ee76f8e4cfaf
            • MD5 SHA1 SHA512

            tmpE986.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\tmpE986.tmp
            • Size 20KB
            • SHA256 5644546ecefc6786c7be5b1a89e935e640963ccd34b130f21baab9370cb9055d
            • MD5 SHA1 SHA512 SSDEEP

            tmpE9B8.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\tmpE9B8.tmp
            • Size 20KB
            • SHA256 d76e7512e496b7c8d9fcd3010a55e2e566881dc6dacaf0343652a4915d47829f
            • MD5 SHA1 SHA512 SSDEEP

            u3fs.0.exe

            • Path C:\Users\Admin\AppData\Local\Temp\u3fs.0.exe
            • Size 213KB
            • SHA256 5b5172f2d9e29bf1fb37c41a7dedc2d8f837776d5883cd46536d34e914fff228
            • MD5 SHA1 SHA512 SSDEEP

            u3fs.1.zip

            • Path C:\Users\Admin\AppData\Local\Temp\u3fs.1.zip
            • Size 3.7MB
            • SHA256 a1dd547a63b256aa6a16871ed03f8b025226f7617e67b8817a08444df077b001
            • MD5 SHA1 SHA512 SSDEEP

            UIxMarketPlugin.dll

            • Path C:\Users\Admin\AppData\Local\Temp\u3fs.2\UIxMarketPlugin.dll
            • Size 1.6MB
            • SHA256 cbcea8f28d8916219d1e8b0a8ca2db17e338eb812431bc4ad0cb36c06fd67f15
            • MD5 SHA1 SHA512 SSDEEP

            bunch.dat

            • Path C:\Users\Admin\AppData\Local\Temp\u3fs.2\bunch.dat
            • Size 1.3MB
            • SHA256 9387488f9d338e211be2cb45109bf590a5070180bc0d4a703f70d3cb3c4e1742
            • MD5 SHA1 SHA512 SSDEEP

            relay.dll

            • Path C:\Users\Admin\AppData\Local\Temp\u3fs.2\relay.dll
            • Size 1.5MB
            • SHA256 7b2db9c88f60ed6dd24b1dec321a304564780fdb191a96ec35c051856128f1ed
            • MD5 SHA1 SHA512 SSDEEP

            run.exe

            • Path C:\Users\Admin\AppData\Local\Temp\u3fs.2\run.exe
            • Size 2.4MB
            • SHA256 a05b592a971fe5011554013bcfe9a4aaf9cfc633bdd1fe3a8197f213d557b8d3
            • MD5 SHA1 SHA512 SSDEEP

            whale.dbf

            • Path C:\Users\Admin\AppData\Local\Temp\u3fs.2\whale.dbf
            • Size 85KB
            • SHA256 b440170853bdb43b66497f701aee2901080326975140b095a1669cb9dee13422
            • MD5 SHA1 SHA512 SSDEEP

            u3fs.3.exe

            • Path C:\Users\Admin\AppData\Local\Temp\u3fs.3.exe
            • Size 4.6MB
            • SHA256 4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7
            • MD5 SHA1 SHA512 SSDEEP

            memory/1016-242-0x000001AB7B3C0000-0x000001AB7B4D0000-memory.dmp

            memory/1016-252-0x000001AB7B260000-0x000001AB7B26A000-memory.dmp

            memory/1016-277-0x000001AB7FC30000-0x000001AB7FC4E000-memory.dmp

            memory/1016-275-0x000001AB7FC00000-0x000001AB7FC22000-memory.dmp

            memory/1016-272-0x000001AB7FC50000-0x000001AB7FCA0000-memory.dmp

            memory/1016-273-0x000001AB18F00000-0x000001AB18F0C000-memory.dmp

            memory/1016-269-0x000001AB196E0000-0x000001AB19C08000-memory.dmp

            memory/1016-268-0x000001AB19190000-0x000001AB191B2000-memory.dmp

            memory/1016-267-0x000001AB19180000-0x000001AB1918A000-memory.dmp

            memory/1016-266-0x000001AB7FB80000-0x000001AB7FB8E000-memory.dmp

            memory/1016-265-0x000001AB7FBC0000-0x000001AB7FBF8000-memory.dmp

            memory/1016-264-0x000001AB7FB70000-0x000001AB7FB78000-memory.dmp

            memory/1016-262-0x000001AB7B8B0000-0x000001AB7BBB0000-memory.dmp

            memory/1016-258-0x000001AB7B270000-0x000001AB7B27A000-memory.dmp

            memory/1016-257-0x000001AB7B830000-0x000001AB7B8A6000-memory.dmp

            memory/1016-256-0x000001AB7B750000-0x000001AB7B7B2000-memory.dmp

            memory/1016-255-0x000001AB7B6C0000-0x000001AB7B73A000-memory.dmp

            memory/1016-237-0x000001AB73B60000-0x000001AB77458000-memory.dmp

            memory/1016-244-0x000001AB7B1F0000-0x000001AB7B1FC000-memory.dmp

            memory/1016-243-0x000001AB79020000-0x000001AB79030000-memory.dmp

            memory/1016-254-0x000001AB7B280000-0x000001AB7B2AA000-memory.dmp

            memory/1016-250-0x000001AB7B240000-0x000001AB7B264000-memory.dmp

            memory/1016-253-0x000001AB7B610000-0x000001AB7B6C2000-memory.dmp

            memory/1016-246-0x000001AB7B1E0000-0x000001AB7B1F4000-memory.dmp

            memory/1184-236-0x0000000000400000-0x00000000008AD000-memory.dmp

            memory/1184-223-0x0000000000400000-0x00000000008AD000-memory.dmp

            memory/1980-147-0x00007FF8A1830000-0x00007FF8A1A25000-memory.dmp

            memory/1980-146-0x0000000072B70000-0x0000000072CEB000-memory.dmp

            memory/1980-196-0x0000000072B70000-0x0000000072CEB000-memory.dmp

            memory/2372-221-0x0000000002B20000-0x0000000002C20000-memory.dmp

            memory/2372-222-0x0000000000400000-0x0000000002AF3000-memory.dmp

            memory/2372-17-0x0000000061E00000-0x0000000061EF3000-memory.dmp

            memory/2372-13-0x0000000002B20000-0x0000000002C20000-memory.dmp

            memory/2372-15-0x0000000002E70000-0x0000000002E97000-memory.dmp

            memory/2372-199-0x0000000000400000-0x0000000002AF3000-memory.dmp

            memory/2372-274-0x0000000000400000-0x0000000002AF3000-memory.dmp

            memory/2372-14-0x0000000000400000-0x0000000002AF3000-memory.dmp

            memory/2372-33-0x0000000000400000-0x0000000002AF3000-memory.dmp

            memory/4456-57-0x0000000001D90000-0x0000000001E90000-memory.dmp

            memory/4456-186-0x0000000000400000-0x0000000001A3B000-memory.dmp

            memory/4456-16-0x0000000000400000-0x0000000001A3B000-memory.dmp

            memory/4456-2-0x0000000001CD0000-0x0000000001D3D000-memory.dmp

            memory/4456-3-0x0000000000400000-0x0000000001A3B000-memory.dmp

            memory/4456-1-0x0000000001D90000-0x0000000001E90000-memory.dmp

            memory/4684-285-0x0000000005610000-0x0000000005BB4000-memory.dmp

            memory/4684-289-0x0000000004F90000-0x0000000004F9A000-memory.dmp

            memory/4684-284-0x0000000004FC0000-0x0000000005052000-memory.dmp

            memory/4684-280-0x0000000071710000-0x0000000072964000-memory.dmp

            memory/4684-286-0x0000000005230000-0x00000000053F2000-memory.dmp

            memory/4684-287-0x00000000050E0000-0x0000000005156000-memory.dmp

            memory/4684-288-0x0000000005090000-0x00000000050E0000-memory.dmp

            memory/4684-283-0x0000000000900000-0x00000000009C6000-memory.dmp

            memory/4684-290-0x00000000061F0000-0x000000000671C000-memory.dmp

            memory/4684-291-0x0000000005D10000-0x0000000005D2E000-memory.dmp

            memory/4684-292-0x0000000005E00000-0x0000000005E66000-memory.dmp

            memory/4684-311-0x00000000077A0000-0x00000000077AA000-memory.dmp

            memory/5028-219-0x00007FF8A1830000-0x00007FF8A1A25000-memory.dmp

            memory/5028-276-0x0000000072B70000-0x0000000072CEB000-memory.dmp