Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/04/2024, 01:34

General

  • Target
    ac075dc158427a98750ca956666c2a7d8d25fe67cbf3512dafbab2c1d64c8018.exe
  • Size 347KB
  • Sample240429-bzefzaed46
  • SHA256 ac075dc158427a98750ca956666c2a7d8d25fe67cbf3512dafbab2c1d64c8018
  • 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#.

  • 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 64 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 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ac075dc158427a98750ca956666c2a7d8d25fe67cbf3512dafbab2c1d64c8018.exe
    "C:\Users\Admin\AppData\Local\Temp\ac075dc158427a98750ca956666c2a7d8d25fe67cbf3512dafbab2c1d64c8018.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3304
    • C:\Users\Admin\AppData\Local\Temp\u2js.0.exe
      "C:\Users\Admin\AppData\Local\Temp\u2js.0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:1624
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1624 -s 2352
        3⤵
        • Program crash
        PID:4184
    • C:\Users\Admin\AppData\Local\Temp\u2js.2\run.exe
      "C:\Users\Admin\AppData\Local\Temp\u2js.2\run.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4396
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\SysWOW64\cmd.exe
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:1680
        • 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:1628
    • C:\Users\Admin\AppData\Local\Temp\u2js.3.exe
      "C:\Users\Admin\AppData\Local\Temp\u2js.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:4416
      • 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 use of AdjustPrivilegeToken
        PID:2592
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3304 -s 1432
      2⤵
      • Program crash
      PID:764
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=3276 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:3
    1⤵
      PID:3192
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3304 -ip 3304
      1⤵
        PID:2604
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 1624 -ip 1624
        1⤵
          PID:3724
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3704 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
          1⤵
            PID:4968

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

                Loading Replay Monitor...

                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

                SCT Auditing Pending Reports

                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\SCT Auditing Pending Reports
                • Size 2B
                • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
                • MD5 SHA1 SHA512

                Sdch Dictionaries

                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Sdch Dictionaries
                • Size 40B
                • SHA256 6028bd681dbf11a0a58dde8a0cd884115c04caa59d080ba51bde1b086ce0079d
                • MD5 SHA1 SHA512

                36932b8e

                • Path C:\Users\Admin\AppData\Local\Temp\36932b8e
                • Size 1.4MB
                • SHA256 3b6c9751b6e71551698aaa96b47219257ae1385bc2b37c25fd4a7c75a609c972
                • MD5 SHA1 SHA512 SSDEEP

                ioloDMLog.txt

                • Path C:\Users\Admin\AppData\Local\Temp\iolo\dm\ioloDMLog.txt
                • Size 2KB
                • SHA256 e879ae717f9cbcb7c2279cd0014e2c39e9716af0280aedb938b8346689ad48f2
                • MD5 SHA1 SHA512

                tmpF77B.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\tmpF77B.tmp
                • Size 20KB
                • SHA256 4d3f3194cb1133437aa69bb880c8cbb55ddf06ff61a88ca6c3f1bbfbfd35d988
                • MD5 SHA1 SHA512 SSDEEP

                tmpF7DC.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\tmpF7DC.tmp
                • Size 20KB
                • SHA256 0628922305d2478ba75a48efadf932d439616eaf1ff908be334793f7bde28107
                • MD5 SHA1 SHA512 SSDEEP

                u2js.0.exe

                • Path C:\Users\Admin\AppData\Local\Temp\u2js.0.exe
                • Size 302KB
                • SHA256 c032e2b1c04b5e2b9bc3ae439e75b993d1e3e03163ac6e589a50cec3745fec7e
                • MD5 SHA1 SHA512 SSDEEP

                u2js.1.zip

                • Path C:\Users\Admin\AppData\Local\Temp\u2js.1.zip
                • Size 3.7MB
                • SHA256 a1dd547a63b256aa6a16871ed03f8b025226f7617e67b8817a08444df077b001
                • MD5 SHA1 SHA512 SSDEEP

                UIxMarketPlugin.dll

                • Path C:\Users\Admin\AppData\Local\Temp\u2js.2\UIxMarketPlugin.dll
                • Size 1.6MB
                • SHA256 cbcea8f28d8916219d1e8b0a8ca2db17e338eb812431bc4ad0cb36c06fd67f15
                • MD5 SHA1 SHA512 SSDEEP

                bunch.dat

                • Path C:\Users\Admin\AppData\Local\Temp\u2js.2\bunch.dat
                • Size 1.3MB
                • SHA256 9387488f9d338e211be2cb45109bf590a5070180bc0d4a703f70d3cb3c4e1742
                • MD5 SHA1 SHA512 SSDEEP

                relay.dll

                • Path C:\Users\Admin\AppData\Local\Temp\u2js.2\relay.dll
                • Size 1.5MB
                • SHA256 7b2db9c88f60ed6dd24b1dec321a304564780fdb191a96ec35c051856128f1ed
                • MD5 SHA1 SHA512 SSDEEP

                run.exe

                • Path C:\Users\Admin\AppData\Local\Temp\u2js.2\run.exe
                • Size 2.4MB
                • SHA256 a05b592a971fe5011554013bcfe9a4aaf9cfc633bdd1fe3a8197f213d557b8d3
                • MD5 SHA1 SHA512 SSDEEP

                whale.dbf

                • Path C:\Users\Admin\AppData\Local\Temp\u2js.2\whale.dbf
                • Size 85KB
                • SHA256 b440170853bdb43b66497f701aee2901080326975140b095a1669cb9dee13422
                • MD5 SHA1 SHA512 SSDEEP

                u2js.3.exe

                • Path C:\Users\Admin\AppData\Local\Temp\u2js.3.exe
                • Size 4.6MB
                • SHA256 4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7
                • MD5 SHA1 SHA512 SSDEEP

                memory/1624-35-0x0000000061E00000-0x0000000061EF3000-memory.dmp

                memory/1624-19-0x0000000000400000-0x0000000001A17000-memory.dmp

                memory/1624-221-0x0000000000400000-0x0000000001A17000-memory.dmp

                memory/1624-17-0x0000000001A60000-0x0000000001B60000-memory.dmp

                memory/1624-213-0x0000000000400000-0x0000000001A17000-memory.dmp

                memory/1624-18-0x0000000003620000-0x0000000003647000-memory.dmp

                memory/1628-290-0x0000000005550000-0x00000000055A0000-memory.dmp

                memory/1628-289-0x00000000054D0000-0x0000000005546000-memory.dmp

                memory/1628-292-0x0000000006660000-0x0000000006B8C000-memory.dmp

                memory/1628-288-0x0000000005860000-0x0000000005A22000-memory.dmp

                memory/1628-293-0x0000000005A60000-0x0000000005A7E000-memory.dmp

                memory/1628-291-0x0000000005370000-0x000000000537A000-memory.dmp

                memory/1628-287-0x0000000005A80000-0x0000000006024000-memory.dmp

                memory/1628-295-0x0000000006200000-0x0000000006266000-memory.dmp

                memory/1628-286-0x0000000005390000-0x0000000005422000-memory.dmp

                memory/1628-285-0x0000000000D00000-0x0000000000DC6000-memory.dmp

                memory/1628-267-0x0000000071200000-0x0000000072454000-memory.dmp

                memory/1680-253-0x0000000072660000-0x00000000727DB000-memory.dmp

                memory/1680-214-0x00007FFEF6070000-0x00007FFEF6265000-memory.dmp

                memory/2592-252-0x00000182D3EA0000-0x00000182D7798000-memory.dmp

                memory/2592-279-0x00000182F7170000-0x00000182F7192000-memory.dmp

                memory/2592-256-0x00000182F20A0000-0x00000182F20AC000-memory.dmp

                memory/2592-255-0x00000182D7C20000-0x00000182D7C30000-memory.dmp

                memory/2592-257-0x00000182F2090000-0x00000182F20A4000-memory.dmp

                memory/2592-258-0x00000182F2330000-0x00000182F2354000-memory.dmp

                memory/2592-259-0x00000182F2490000-0x00000182F249A000-memory.dmp

                memory/2592-261-0x00000182F2550000-0x00000182F257A000-memory.dmp

                memory/2592-260-0x00000182F24A0000-0x00000182F2552000-memory.dmp

                memory/2592-262-0x00000182F2580000-0x00000182F25FA000-memory.dmp

                memory/2592-263-0x00000182F2600000-0x00000182F2662000-memory.dmp

                memory/2592-264-0x00000182F26E0000-0x00000182F2756000-memory.dmp

                memory/2592-266-0x00000182D94F0000-0x00000182D94FA000-memory.dmp

                memory/2592-271-0x00000182F2760000-0x00000182F2A60000-memory.dmp

                memory/2592-314-0x00000182F7260000-0x00000182F727E000-memory.dmp

                memory/2592-275-0x00000182F7150000-0x00000182F7158000-memory.dmp

                memory/2592-276-0x00000182F6A90000-0x00000182F6AC8000-memory.dmp

                memory/2592-277-0x00000182F6A60000-0x00000182F6A6E000-memory.dmp

                memory/2592-278-0x00000182F7BF0000-0x00000182F7BFA000-memory.dmp

                memory/2592-254-0x00000182F21E0000-0x00000182F22F0000-memory.dmp

                memory/2592-280-0x00000182F8130000-0x00000182F8658000-memory.dmp

                memory/2592-283-0x00000182F71E0000-0x00000182F7230000-memory.dmp

                memory/2592-284-0x00000182F7190000-0x00000182F719C000-memory.dmp

                memory/2592-294-0x00000182F7230000-0x00000182F7252000-memory.dmp

                memory/3304-5-0x0000000000400000-0x0000000002B15000-memory.dmp

                memory/3304-210-0x0000000000400000-0x0000000002B15000-memory.dmp

                memory/3304-211-0x0000000003050000-0x00000000030BD000-memory.dmp

                memory/3304-151-0x0000000000400000-0x0000000002B15000-memory.dmp

                memory/3304-3-0x0000000000400000-0x0000000002B15000-memory.dmp

                memory/3304-1-0x0000000002E50000-0x0000000002F50000-memory.dmp

                memory/3304-2-0x0000000003050000-0x00000000030BD000-memory.dmp

                memory/4396-200-0x0000000072660000-0x00000000727DB000-memory.dmp

                memory/4396-135-0x00007FFEF6070000-0x00007FFEF6265000-memory.dmp

                memory/4396-131-0x0000000072660000-0x00000000727DB000-memory.dmp

                memory/4416-231-0x0000000000400000-0x00000000008AD000-memory.dmp

                memory/4416-251-0x0000000000400000-0x00000000008AD000-memory.dmp

                memory/4416-250-0x0000000000400000-0x00000000008AD000-memory.dmp