Analysis

  • max time kernel
    144s
  • 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
    28/04/2024, 08:41

General

  • Target
    b8cada23248c735be688419576776c79.exe
  • Size 457KB
  • Sample240428-klez1scb31
  • SHA256 5bb83f0ba00575c13ebd140a39a6f08a109e262dcadf5d6acf1e1df06dfd2192
  • 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
  • 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 43 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\b8cada23248c735be688419576776c79.exe
    "C:\Users\Admin\AppData\Local\Temp\b8cada23248c735be688419576776c79.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4076
    • C:\Users\Admin\AppData\Local\Temp\u358.0.exe
      "C:\Users\Admin\AppData\Local\Temp\u358.0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:1048
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1048 -s 2248
        3⤵
        • Program crash
        PID:612
    • C:\Users\Admin\AppData\Local\Temp\u358.2\run.exe
      "C:\Users\Admin\AppData\Local\Temp\u358.2\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:4396
      • 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:640
        • 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:4740
    • C:\Users\Admin\AppData\Local\Temp\u358.3.exe
      "C:\Users\Admin\AppData\Local\Temp\u358.3.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:4040
      • 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:836
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 1532
      2⤵
      • Program crash
      PID:5028
  • 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=3876 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:3
    1⤵
      PID:4772
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4076 -ip 4076
      1⤵
        PID:452
      • 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=5068 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:4764
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1048 -ip 1048
          1⤵
            PID:4240

          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

                3d45441a

                • Path C:\Users\Admin\AppData\Local\Temp\3d45441a
                • Size 1.4MB
                • SHA256 b558a6c19b5b81a3d33ef2003337c603c82f905e4fce387cceeee3e0cbac5a58
                • MD5 SHA1 SHA512 SSDEEP

                ioloDMLog.txt

                • Path C:\Users\Admin\AppData\Local\Temp\iolo\dm\ioloDMLog.txt
                • Size 2KB
                • SHA256 8ec11798a109b9f4d422cc65b0f79f099c2700f035b1523239b149a9c68b0fae
                • MD5 SHA1 SHA512

                tmp2EB8.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\tmp2EB8.tmp
                • Size 20KB
                • SHA256 4d3f3194cb1133437aa69bb880c8cbb55ddf06ff61a88ca6c3f1bbfbfd35d988
                • MD5 SHA1 SHA512 SSDEEP

                tmp2F28.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\tmp2F28.tmp
                • Size 20KB
                • SHA256 0628922305d2478ba75a48efadf932d439616eaf1ff908be334793f7bde28107
                • MD5 SHA1 SHA512 SSDEEP

                u358.0.exe

                • Path C:\Users\Admin\AppData\Local\Temp\u358.0.exe
                • Size 312KB
                • SHA256 ce160a07f5555fd479f9b86632a594d9e679bd60c4d817757230e1d382856586
                • MD5 SHA1 SHA512 SSDEEP

                u358.1.zip

                • Path C:\Users\Admin\AppData\Local\Temp\u358.1.zip
                • Size 3.7MB
                • SHA256 a1dd547a63b256aa6a16871ed03f8b025226f7617e67b8817a08444df077b001
                • MD5 SHA1 SHA512 SSDEEP

                UIxMarketPlugin.dll

                • Path C:\Users\Admin\AppData\Local\Temp\u358.2\UIxMarketPlugin.dll
                • Size 1.6MB
                • SHA256 cbcea8f28d8916219d1e8b0a8ca2db17e338eb812431bc4ad0cb36c06fd67f15
                • MD5 SHA1 SHA512 SSDEEP

                bunch.dat

                • Path C:\Users\Admin\AppData\Local\Temp\u358.2\bunch.dat
                • Size 1.3MB
                • SHA256 9387488f9d338e211be2cb45109bf590a5070180bc0d4a703f70d3cb3c4e1742
                • MD5 SHA1 SHA512 SSDEEP

                relay.dll

                • Path C:\Users\Admin\AppData\Local\Temp\u358.2\relay.dll
                • Size 1.5MB
                • SHA256 7b2db9c88f60ed6dd24b1dec321a304564780fdb191a96ec35c051856128f1ed
                • MD5 SHA1 SHA512 SSDEEP

                run.exe

                • Path C:\Users\Admin\AppData\Local\Temp\u358.2\run.exe
                • Size 2.4MB
                • SHA256 a05b592a971fe5011554013bcfe9a4aaf9cfc633bdd1fe3a8197f213d557b8d3
                • MD5 SHA1 SHA512 SSDEEP

                whale.dbf

                • Path C:\Users\Admin\AppData\Local\Temp\u358.2\whale.dbf
                • Size 85KB
                • SHA256 b440170853bdb43b66497f701aee2901080326975140b095a1669cb9dee13422
                • MD5 SHA1 SHA512 SSDEEP

                u358.3.exe

                • Path C:\Users\Admin\AppData\Local\Temp\u358.3.exe
                • Size 4.6MB
                • SHA256 4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7
                • MD5 SHA1 SHA512 SSDEEP

                memory/640-223-0x00007FFCC1390000-0x00007FFCC1585000-memory.dmp

                memory/640-263-0x0000000072ED0000-0x000000007304B000-memory.dmp

                memory/836-272-0x000001837C390000-0x000001837C39C000-memory.dmp

                memory/836-303-0x000001837F540000-0x000001837F590000-memory.dmp

                memory/836-337-0x000001837C3B0000-0x000001837C5A7000-memory.dmp

                memory/836-336-0x000001837C3B0000-0x000001837C5A7000-memory.dmp

                memory/836-335-0x000001837C3B0000-0x000001837C5A7000-memory.dmp

                memory/836-334-0x000001837C3B0000-0x000001837C5A7000-memory.dmp

                memory/836-333-0x000001837C3B0000-0x000001837C5A7000-memory.dmp

                memory/836-332-0x000001837C3B0000-0x000001837C5A7000-memory.dmp

                memory/836-330-0x000001837C3B0000-0x000001837C5A7000-memory.dmp

                memory/836-310-0x000001837F110000-0x000001837F12E000-memory.dmp

                memory/836-308-0x000001837C3B0000-0x000001837C5A7000-memory.dmp

                memory/836-306-0x000001837F0E0000-0x000001837F102000-memory.dmp

                memory/836-304-0x00000183022F0000-0x00000183022FC000-memory.dmp

                memory/836-300-0x0000018303310000-0x0000018303838000-memory.dmp

                memory/836-299-0x00000183022D0000-0x00000183022F2000-memory.dmp

                memory/836-298-0x00000183022C0000-0x00000183022CA000-memory.dmp

                memory/836-297-0x000001837F060000-0x000001837F06E000-memory.dmp

                memory/836-296-0x000001837F0A0000-0x000001837F0D8000-memory.dmp

                memory/836-264-0x000001835E550000-0x0000018361E48000-memory.dmp

                memory/836-295-0x000001837F050000-0x000001837F058000-memory.dmp

                memory/836-288-0x000001837C3B0000-0x000001837C5A7000-memory.dmp

                memory/836-268-0x000001837C9A0000-0x000001837CAB0000-memory.dmp

                memory/836-271-0x0000018363BB0000-0x0000018363BC0000-memory.dmp

                memory/836-289-0x000001837CDD0000-0x000001837D0D0000-memory.dmp

                memory/836-284-0x0000018363B80000-0x0000018363B8A000-memory.dmp

                memory/836-274-0x000001837C700000-0x000001837C724000-memory.dmp

                memory/836-273-0x000001837C380000-0x000001837C394000-memory.dmp

                memory/836-283-0x000001837CD50000-0x000001837CDC6000-memory.dmp

                memory/836-282-0x000001837CC70000-0x000001837CCD2000-memory.dmp

                memory/836-281-0x000001837CBF0000-0x000001837CC6A000-memory.dmp

                memory/836-278-0x000001837C730000-0x000001837C73A000-memory.dmp

                memory/836-279-0x000001837C7A0000-0x000001837C852000-memory.dmp

                memory/836-280-0x000001837C850000-0x000001837C87A000-memory.dmp

                memory/1048-258-0x0000000000400000-0x0000000001A19000-memory.dmp

                memory/1048-177-0x0000000000400000-0x0000000001A19000-memory.dmp

                memory/1048-66-0x0000000000400000-0x0000000001A19000-memory.dmp

                memory/1048-15-0x0000000000400000-0x0000000001A19000-memory.dmp

                memory/1048-226-0x0000000000400000-0x0000000001A19000-memory.dmp

                memory/1048-265-0x0000000000400000-0x0000000001A19000-memory.dmp

                memory/1048-17-0x0000000061E00000-0x0000000061EF3000-memory.dmp

                memory/1048-13-0x0000000001C70000-0x0000000001D70000-memory.dmp

                memory/1048-14-0x0000000003650000-0x0000000003677000-memory.dmp

                memory/4040-240-0x0000000000400000-0x00000000008AD000-memory.dmp

                memory/4040-259-0x0000000000400000-0x00000000008AD000-memory.dmp

                memory/4040-262-0x0000000000400000-0x00000000008AD000-memory.dmp

                memory/4076-1-0x0000000001B30000-0x0000000001C30000-memory.dmp

                memory/4076-3-0x0000000000400000-0x0000000001A3D000-memory.dmp

                memory/4076-2-0x0000000003650000-0x00000000036BD000-memory.dmp

                memory/4076-222-0x0000000003650000-0x00000000036BD000-memory.dmp

                memory/4076-221-0x0000000000400000-0x0000000001A3D000-memory.dmp

                memory/4076-71-0x0000000001B30000-0x0000000001C30000-memory.dmp

                memory/4076-16-0x0000000000400000-0x0000000001A3D000-memory.dmp

                memory/4396-160-0x00007FFCC1390000-0x00007FFCC1585000-memory.dmp

                memory/4396-206-0x0000000072ED0000-0x000000007304B000-memory.dmp

                memory/4396-159-0x0000000072ED0000-0x000000007304B000-memory.dmp

                memory/4740-277-0x0000000005E90000-0x0000000006434000-memory.dmp

                memory/4740-307-0x0000000006540000-0x000000000655E000-memory.dmp

                memory/4740-294-0x00000000058C0000-0x00000000058CA000-memory.dmp

                memory/4740-293-0x0000000005A30000-0x0000000005A80000-memory.dmp

                memory/4740-292-0x0000000005960000-0x00000000059D6000-memory.dmp

                memory/4740-331-0x0000000007E50000-0x0000000007E5A000-memory.dmp

                memory/4740-290-0x0000000005AC0000-0x0000000005C82000-memory.dmp

                memory/4740-309-0x0000000006630000-0x0000000006696000-memory.dmp

                memory/4740-267-0x0000000071A70000-0x0000000072CC4000-memory.dmp

                memory/4740-275-0x0000000001160000-0x0000000001226000-memory.dmp

                memory/4740-305-0x0000000006A70000-0x0000000006F9C000-memory.dmp

                memory/4740-276-0x00000000057F0000-0x0000000005882000-memory.dmp