Analysis
- max time kernel
144s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20240709-en - resource tags
arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system - submitted
24/07/2024, 14:05
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
4D62A012BD9A4700B2A0BC7143151EEAF12D1EB88BB8B02701902168CD42CE24.exe
Resource
win7-20240708-en
windows7-x64
11 signatures
150 seconds
General
- Target 4D62A012BD9A4700B2A0BC7143151EEAF12D1EB88BB8B02701902168CD42CE24.exe
- Size 243KB
- Sample240724-rdtxjasgmc
- SHA256 9b2d89057155cd1cec731e83a0946cf95772134f0069da737fa30935b5a9b325
- MD5 6cc414140f13caf6ab67abd78c488ac0
- SHA1 d90819c58bac99abdc37e394597acdef85dd36c4
- SHA512 75133bf1e666e17d3d18e4953b8e62bcb87454157102f1825ba972feec0801901fa4bdaa0ba88823839ad7422622e274a39c4a183c4a0a7f00a8432be02e77db
- SSDEEP 1536:oju9HIaQrom6hbDAdqGpdMJ2x5f/h81lM5nB7OcIGGjz5NTJ1zc4aZGCq2iW7z:ojMHIPSbx7+8n4gc1Gn5N91dOGCH
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
Family
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systembc
C2
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31.44.185.6:4001
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31.44.185.11:4001
Signatures
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resource yara_rule behavioral2/files/0x00090000000233d0-3.dat aspack_v212_v242 - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3419463127-3903270268-2580331543-1000\Control Panel\International\Geo\Nation uzVsMx.exe - Executes dropped EXE 3 IoCs
pid Process 4912 uzVsMx.exe 2796 fxoekpg.exe 944 uzVsMx.exe - Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\orbd.exe uzVsMx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Cortana.exe uzVsMx.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe uzVsMx.exe File opened for modification C:\Program Files\dotnet\dotnet.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javadoc.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\jp2launcher.exe uzVsMx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Win32Bridge.Server.exe uzVsMx.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\msoasb.exe uzVsMx.exe File opened for modification C:\Program Files\Microsoft Office 15\ClientX64\IntegratedOffice.exe uzVsMx.exe File opened for modification C:\Program Files\Mozilla Firefox\default-browser-agent.exe uzVsMx.exe File opened for modification C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe uzVsMx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ScreenSketch_10.1907.2471.0_x64__8wekyb3d8bbwe\ScreenSketch.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\wsgen.exe uzVsMx.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE uzVsMx.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.371\GoogleUpdate.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javaw.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jdeps.exe uzVsMx.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\SDXHelperBgt.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\policytool.exe uzVsMx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\Solitaire.exe uzVsMx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\SkypeBackgroundHost.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jstatd.exe uzVsMx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\SkypeApp.exe uzVsMx.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\ADelRCP.exe uzVsMx.exe File opened for modification C:\Program Files (x86)\Google\Update\DisabledGoogleUpdate.exe uzVsMx.exe File opened for modification C:\Program Files\7-Zip\7z.exe uzVsMx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.People_10.1902.633.0_x64__8wekyb3d8bbwe\PeopleApp.exe uzVsMx.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrServicesUpdater.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\ktab.exe uzVsMx.exe File opened for modification C:\Program Files\Microsoft Office 15\ClientX64\OfficeClickToRun.exe uzVsMx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\fmui\fmui.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jstack.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\policytool.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\klist.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\serialver.exe uzVsMx.exe File opened for modification C:\Program Files\Windows Mail\wabmig.exe uzVsMx.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.371\GoogleUpdateOnDemand.exe uzVsMx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\LocalBridge.exe uzVsMx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Windows.Photos_2019.19071.12548.0_x64__8wekyb3d8bbwe\Microsoft.Photos.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\orbd.exe uzVsMx.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\Source Engine\OSE.EXE uzVsMx.exe File opened for modification C:\Program Files\Mozilla Firefox\updater.exe uzVsMx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\MixedRealityPortal.exe uzVsMx.exe File opened for modification C:\Program Files\Google\Chrome\Application\123.0.6312.106\Installer\chrmstp.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\java.exe uzVsMx.exe File opened for modification C:\Program Files\Microsoft Office\root\Client\AppVLP.exe uzVsMx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\SkypeBridge\SkypeBridge.exe uzVsMx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\HxOutlook.exe uzVsMx.exe File opened for modification C:\Program Files (x86)\Windows Mail\wab.exe uzVsMx.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.Loader.exe uzVsMx.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\msotd.exe uzVsMx.exe File opened for modification C:\Program Files\Mozilla Firefox\uninstall\helper.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\kinit.exe uzVsMx.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\PPTICO.EXE uzVsMx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebMediaExtensions_1.0.20875.0_x64__8wekyb3d8bbwe\Microsoft.WebMediaExtensions.exe uzVsMx.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32Info.exe uzVsMx.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\createdump.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jdb.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\rmid.exe uzVsMx.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\policytool.exe uzVsMx.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.exe uzVsMx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_10.1906.1972.0_x64__8wekyb3d8bbwe\SoundRec.exe uzVsMx.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.DBConnection.exe uzVsMx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftStickyNotes_3.6.73.0_x64__8wekyb3d8bbwe\Microsoft.Notes.exe uzVsMx.exe - Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\Tasks\fxoekpg.job 4D62A012BD9A4700B2A0BC7143151EEAF12D1EB88BB8B02701902168CD42CE24.exe File opened for modification C:\Windows\Tasks\fxoekpg.job 4D62A012BD9A4700B2A0BC7143151EEAF12D1EB88BB8B02701902168CD42CE24.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 6 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language uzVsMx.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 4D62A012BD9A4700B2A0BC7143151EEAF12D1EB88BB8B02701902168CD42CE24.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language uzVsMx.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language fxoekpg.exe - Modifies data under HKEY_USERS 5 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ uzVsMx.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" uzVsMx.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" uzVsMx.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" uzVsMx.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" uzVsMx.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 5100 4D62A012BD9A4700B2A0BC7143151EEAF12D1EB88BB8B02701902168CD42CE24.exe 5100 4D62A012BD9A4700B2A0BC7143151EEAF12D1EB88BB8B02701902168CD42CE24.exe - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 5100 wrote to memory of 4912 5100 4D62A012BD9A4700B2A0BC7143151EEAF12D1EB88BB8B02701902168CD42CE24.exe 84 PID 5100 wrote to memory of 4912 5100 4D62A012BD9A4700B2A0BC7143151EEAF12D1EB88BB8B02701902168CD42CE24.exe 84 PID 5100 wrote to memory of 4912 5100 4D62A012BD9A4700B2A0BC7143151EEAF12D1EB88BB8B02701902168CD42CE24.exe 84 PID 4912 wrote to memory of 2148 4912 uzVsMx.exe 92 PID 4912 wrote to memory of 2148 4912 uzVsMx.exe 92 PID 4912 wrote to memory of 2148 4912 uzVsMx.exe 92 PID 2796 wrote to memory of 944 2796 fxoekpg.exe 98 PID 2796 wrote to memory of 944 2796 fxoekpg.exe 98 PID 2796 wrote to memory of 944 2796 fxoekpg.exe 98 PID 944 wrote to memory of 1448 944 uzVsMx.exe 99 PID 944 wrote to memory of 1448 944 uzVsMx.exe 99 PID 944 wrote to memory of 1448 944 uzVsMx.exe 99
Processes
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C:\Users\Admin\AppData\Local\Temp\4D62A012BD9A4700B2A0BC7143151EEAF12D1EB88BB8B02701902168CD42CE24.exe"C:\Users\Admin\AppData\Local\Temp\4D62A012BD9A4700B2A0BC7143151EEAF12D1EB88BB8B02701902168CD42CE24.exe"1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5100 -
C:\Users\Admin\AppData\Local\Temp\uzVsMx.exeC:\Users\Admin\AppData\Local\Temp\uzVsMx.exe2⤵
- Checks computer location settings
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4912 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\751b6c7f.bat" "3⤵
- System Location Discovery: System Language Discovery
PID:2148
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C:\ProgramData\nrholci\fxoekpg.exeC:\ProgramData\nrholci\fxoekpg.exe start1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2796 -
C:\Windows\TEMP\uzVsMx.exeC:\Windows\TEMP\uzVsMx.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious use of WriteProcessMemory
PID:944 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Windows\TEMP\6eac6519.bat" "3⤵
- System Location Discovery: System Language Discovery
PID:1448
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\ProgramData\nrholci\fxoekpg.exe
- Size 243KB
- SHA256 9b2d89057155cd1cec731e83a0946cf95772134f0069da737fa30935b5a9b325
- MD5 6cc414140f13caf6ab67abd78c488ac0
- SHA1 d90819c58bac99abdc37e394597acdef85dd36c4
- SHA512 75133bf1e666e17d3d18e4953b8e62bcb87454157102f1825ba972feec0801901fa4bdaa0ba88823839ad7422622e274a39c4a183c4a0a7f00a8432be02e77db
- SSDEEP 1536:oju9HIaQrom6hbDAdqGpdMJ2x5f/h81lM5nB7OcIGGjz5NTJ1zc4aZGCq2iW7z:ojMHIPSbx7+8n4gc1Gn5N91dOGCH
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\KCRJMNF7\k2[1].rar
- Size 4B
- SHA256 b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c
- MD5 d3b07384d113edec49eaa6238ad5ff00
- SHA1 f1d2d2f924e986ac86fdf7b36c94bcdf32beec15
- SHA512 0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\4A485E6B.exe
- Size 4B
- SHA256 9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31
- MD5 20879c987e2f9a916e578386d499f629
- SHA1 c7b33ddcc42361fdb847036fc07e880b81935d5d
- SHA512 bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\751b6c7f.bat
- Size 187B
- SHA256 8aa4251b6ba41c1bb587d4ec706d659414a586d6f8330fbb77a8316779d0af95
- MD5 ea32db73970cfff6dedac6719635868c
- SHA1 17e321585b74b06a31abd2a7b712ed1ba8dd469b
- SHA512 a216eff9aeacc9601481cf72910d4584b845c72a1b16333ade9ec1df48d160d65ae3d3667acd235d41d2d3480cf9dd0c2f567e02e9ccd419d77a58cb3b3ca290
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\uzVsMx.exe
- Size 15KB
- SHA256 4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794
- MD5 f7d21de5c4e81341eccd280c11ddcc9a
- SHA1 d4e9ef10d7685d491583c6fa93ae5d9105d815bd
- SHA512 e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3
- SSDEEP 384:IXZQaD7U8iu4YsAa7ZA0UvH2lsRv21yW7GbAxur6+Y9PffPz:gQGPL4vzZq2o9W7GsxBbPr
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\TEMP\6eac6519.bat
- Size 133B
- SHA256 d26d86069dbdaf4bd0ece54e0a29a8e575e8228af5bf1e16ec0bd95adf068101
- MD5 c4ec6eee856078caf82cc448e33d026d
- SHA1 80b7572f63057ec90a7c51c9a564dfc41f310761
- SHA512 03608aba5965e6e78c731732990ed2149db5971bda0af4330ad996520b940762989886ce9aef109e6feb62fdfe76628fff37c50ff743f0dce9deac8a2e6cafa3
- MD5 SHA1 SHA512