Analysis
- max time kernel
150s - 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
16/07/2024, 11:30
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
4c0153b979e65346c1d6f863086082ec5ef103cbf6b0f5e8652d61da678a8ca5.exe
Resource
win7-20240704-en
windows7-x64
16 signatures
150 seconds
Behavioral task
behavioral2
Sample
4c0153b979e65346c1d6f863086082ec5ef103cbf6b0f5e8652d61da678a8ca5.exe
Resource
win10v2004-20240709-en
windows10-2004-x64
14 signatures
150 seconds
General
- Target 4c0153b979e65346c1d6f863086082ec5ef103cbf6b0f5e8652d61da678a8ca5.exe
- Size 390KB
- Sample240716-nl85mstajd
- SHA256 4c0153b979e65346c1d6f863086082ec5ef103cbf6b0f5e8652d61da678a8ca5
- MD5 8c64181ff0dc12c87e443aae94bf6650
- SHA1 e91d7ebd17912785caa3e71ef1571dc01b1cd854
- SHA512 4854565b054297dffc13b659a53059ee8731dca02f3027501254551cb4af20b68fb121d03e528151cf910238b49bf00a3827e74e4bb68faf85ebc50d02ad5c17
- SSDEEP 12288:ef/X4NTn/xVkNG+w+9OqFoK323qdQYKU3:EXATn/xVkNg+95vdQa
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Mimikatz
mimikatz is an open source tool to dump credentials on Windows.
- mimikatz is an open source tool to dump credentials on Windows 1 IoCs
resource yara_rule behavioral2/files/0x00080000000234b9-17.dat mimikatz - 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 4c0153b979e65346c1d6f863086082ec5ef103cbf6b0f5e8652d61da678a8ca5.exe - Executes dropped EXE 1 IoCs
pid Process 2068 93B4.tmp - Loads dropped DLL 1 IoCs
pid Process 516 rundll32.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PhysicalDrive0 rundll32.exe - Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Microsoft Office\root\Office16\CLVIEW.EXE rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE rundll32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\PDFSigQFormalRep.pdf rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\Windows\Installer\{90160000-000F-0000-1000-0000000FF1CE}\accicons.exe rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.StorePurchaseApp_11811.1001.18.0_x64__8wekyb3d8bbwe\StoreExperienceHost.exe rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppInstallerPythonRedirector.exe rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Wallet_2.4.18324.0_x64__8wekyb3d8bbwe\Microsoft.Wallet.exe rundll32.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\AppSharingHookController.exe rundll32.exe File opened for modification C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\AdobeARM.exe rundll32.exe File opened for modification C:\Program Files\7-Zip\7z.exe rundll32.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeClickToRun.exe rundll32.exe File opened for modification C:\Program Files\Windows Mail\wab.exe rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppInstaller.exe rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.YourPhone_0.19051.7.0_x64__8wekyb3d8bbwe\YourPhone.exe rundll32.exe File opened for modification C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe rundll32.exe File opened for modification C:\Program Files (x86)\Windows Media Player\wmprph.exe rundll32.exe File opened for modification C:\Program Files (x86)\Windows Media Player\wmpshare.exe rundll32.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\extcheck.exe rundll32.exe File opened for modification C:\Program Files\Java\jdk-1.8\include\jawt.h rundll32.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\unpack200.exe rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DWTRIG20.EXE rundll32.exe File opened for modification C:\Program Files\Windows Mail\wabmig.exe rundll32.exe File opened for modification C:\Program Files\Windows Media Player\wmpnscfg.exe rundll32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\pi_brokers\64BitMAPIBroker.exe rundll32.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\createdump.exe rundll32.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jabswitch.exe rundll32.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jstack.exe rundll32.exe File opened for modification C:\Program Files\Windows Media Player\setup_wm.exe rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.BingWeather_4.25.20211.0_x64__8wekyb3d8bbwe\Microsoft.Msn.Weather.exe rundll32.exe File opened for modification C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\Install\{A56C4C79-567B-4176-A842-391F7A2984ED}\MicrosoftEdgeUpdateSetup_X86_1.3.187.41.exe rundll32.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\MavInject32.exe rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\PerfBoost.exe rundll32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\pi_brokers\32BitMAPIBroker.exe rundll32.exe File opened for modification C:\Program Files\Java\jre-1.8\lib\amd64\jvm.cfg rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\EXCEL.EXE rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\Windows\Installer\{90160000-000F-0000-1000-0000000FF1CE}\outicon.exe rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\Solitaire.exe rundll32.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\javacpl.exe rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\PilotshubApp.exe rundll32.exe File opened for modification C:\Program Files (x86)\Windows NT\Accessories\wordpad.exe rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\Windows\Installer\{90160000-000F-0000-1000-0000000FF1CE}\pj11icon.exe rundll32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32Info.exe rundll32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\ADelRCP.exe rundll32.exe File opened for modification C:\Program Files (x86)\Google\Update\DisabledGoogleUpdate.exe rundll32.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\ssvagent.exe rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.PPT rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\Windows\Installer\{90160000-001F-0C0A-1000-0000000FF1CE}\misc.exe rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Xbox.TCUI_1.23.28002.0_x64__8wekyb3d8bbwe\TCUI-App.exe rundll32.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.371\GoogleCrashHandler.exe rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\msoia.exe rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\msotd.exe rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\WORDICON.EXE rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxGamingOverlay_2.34.28001.0_x64__8wekyb3d8bbwe\GameBar.exe rundll32.exe File opened for modification C:\Program Files (x86)\Internet Explorer\iexplore.exe rundll32.exe File opened for modification C:\Program Files\ExpandUnprotect.rtf rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\MSOHTMED.EXE rundll32.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 rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\Windows\Installer\{90160000-000F-0000-1000-0000000FF1CE}\osmclienticon.exe rundll32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\HomeBanner_Dark.pdf rundll32.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\java.exe rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.XLS rundll32.exe File opened for modification C:\Program Files\Microsoft Office 15\ClientX64\OfficeClickToRun.exe rundll32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\sample-files\assets\Sample Files\Adobe Sign White Paper.pdf rundll32.exe - Drops file in Windows directory 4 IoCs
description ioc Process File created C:\Windows\dllcm.dat 4c0153b979e65346c1d6f863086082ec5ef103cbf6b0f5e8652d61da678a8ca5.exe File opened for modification C:\Windows\dllcm.dat rundll32.exe File created C:\Windows\dllcm rundll32.exe File created C:\Windows\dllhost.dat rundll32.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1520 schtasks.exe - Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 516 rundll32.exe 516 rundll32.exe 2068 93B4.tmp 2068 93B4.tmp 2068 93B4.tmp 2068 93B4.tmp 2068 93B4.tmp 2068 93B4.tmp - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeShutdownPrivilege 516 rundll32.exe Token: SeDebugPrivilege 516 rundll32.exe Token: SeTcbPrivilege 516 rundll32.exe Token: SeDebugPrivilege 2068 93B4.tmp - Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 5040 wrote to memory of 516 5040 4c0153b979e65346c1d6f863086082ec5ef103cbf6b0f5e8652d61da678a8ca5.exe 85 PID 5040 wrote to memory of 516 5040 4c0153b979e65346c1d6f863086082ec5ef103cbf6b0f5e8652d61da678a8ca5.exe 85 PID 5040 wrote to memory of 516 5040 4c0153b979e65346c1d6f863086082ec5ef103cbf6b0f5e8652d61da678a8ca5.exe 85 PID 516 wrote to memory of 3544 516 rundll32.exe 87 PID 516 wrote to memory of 3544 516 rundll32.exe 87 PID 516 wrote to memory of 3544 516 rundll32.exe 87 PID 516 wrote to memory of 2068 516 rundll32.exe 89 PID 516 wrote to memory of 2068 516 rundll32.exe 89 PID 3544 wrote to memory of 1520 3544 cmd.exe 91 PID 3544 wrote to memory of 1520 3544 cmd.exe 91 PID 3544 wrote to memory of 1520 3544 cmd.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\4c0153b979e65346c1d6f863086082ec5ef103cbf6b0f5e8652d61da678a8ca5.exe"C:\Users\Admin\AppData\Local\Temp\4c0153b979e65346c1d6f863086082ec5ef103cbf6b0f5e8652d61da678a8ca5.exe"1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:5040 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Windows\dllcm.dat #12⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:516 -
C:\Windows\SysWOW64\cmd.exe/c schtasks /Create /SC once /TN "" /TR "C:\Windows\system32\shutdown.exe /r /f" /ST 12:333⤵
- Suspicious use of WriteProcessMemory
PID:3544 -
C:\Windows\SysWOW64\schtasks.exeschtasks /Create /SC once /TN "" /TR "C:\Windows\system32\shutdown.exe /r /f" /ST 12:334⤵
- Scheduled Task/Job: Scheduled Task
PID:1520
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C:\Users\Admin\AppData\Local\Temp\93B4.tmp"C:\Users\Admin\AppData\Local\Temp\93B4.tmp" \\.\pipe\{78C5038D-83CA-4E4C-BF08-E636BAE976E0}3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2068
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\93B4.tmp
- Size 55KB
- SHA256 02ef73bd2458627ed7b397ec26ee2de2e92c71a0e7588f78734761d8edbdcd9f
- MD5 7e37ab34ecdcc3e77e24522ddfd4852d
- SHA1 38e2855e11e353cedf9a8a4f2f2747f1c5c07fcf
- SHA512 1b037a2aa8bf951d2ffe2f724aa0b2fbb39c2173215806ba0327bda7b096301d887f9bb7db46f9e04584b16aa6b1aaeaf67f0ecf5f20eb02ceac27c8753ca587
- SSDEEP 768:wglvV3eE6cYdk8TcqiAjpEhtFLIZJ92evTlvGTIRVIRYcwq22zDcENaiaX+kDt9J:3ihTaAjZNlGT5YcdYENvkA+ChJfSz
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\dllcm.dat
- Size 353KB
- SHA256 4dd22017d6f77573cc0f4999d22b45f1d71e6435350d4a5654ee1e93fec30827
- MD5 7c0747971df2d07ceca15f0edc0a9f6e
- SHA1 4db833ba4ddf88c36d6956928721547e1e221c0d
- SHA512 d5da33a23fa39441901b9f4cc08468692d076545ffd29c082982fde7e93bb27464445478a37629a47d56594fd019863a1de52573c47ccf8d2252eb2047f8606e
- SSDEEP 6144:y/Bt80VmNTBZ/xVEZjAetGDN3VFNq7pC+9OqFoK30b3ni5rdQY/CdUOs2:y/X4NTn/xVkNG+w+9OqFoK323qdQYKUG
- MD5 SHA1 SHA512 SSDEEP