63d05e539ce789c454fc5765092323fe62fee683e1382d8d4d54d001cfac8457

General

Target

0227cbdb_by_Libranalysis.exe
Size

65KB
MD5

0227cbdb229e67a2ef044dc152454f51
SHA1

08459d52fb430bc1bb262595edf2c6ca3d54817e
SHA256

63d05e539ce789c454fc5765092323fe62fee683e1382d8d4d54d001cfac8457
SHA512

0045a6a71cb532345e1e5e94a466b7939ccd8899cf02385d2ccde332c4e11907de2cc6a72016519620fe63566927891c160b0d9e9ec564e000117e89f95e08b2

Score

8^/10

aspackv2

Malware Config

Signatures

ASPack v2.12-2.42 2 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\vpnTKB.exe	aspack_v212_v242
C:\Users\Admin\AppData\Local\Temp\vpnTKB.exe	aspack_v212_v242

Executes dropped EXE 1 IoCs

Processes:

vpnTKB.exe

pid process

4024 vpnTKB.exe

pid	process
4024	vpnTKB.exe

Drops file in Program Files directory 64 IoCs

Processes:

vpnTKB.exe

description	ioc	process
File opened for modification	C:\Program Files\Google\Chrome\Application\89.0.4389.114\chrome_pwa_launcher.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Windows Defender\MSASCui.exe	vpnTKB.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroTextExtractor.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\VPREVIEW.EXE	vpnTKB.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\onenoteshare.exe	vpnTKB.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\HxTsr.exe	vpnTKB.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroBroker.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\89.0.4389.114\Installer\chrmstp.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\native2ascii.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PDFREFLOW.EXE	vpnTKB.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.StorePurchaseApp_1.0.45.0_x64__8wekyb3d8bbwe\PurchaseApp.exe	vpnTKB.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1612.10312.0_x64__8wekyb3d8bbwe\PilotshubApp.exe	vpnTKB.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\bin\javaw.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\OLicenseHeartbeat.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Windows Defender Advanced Threat Protection\SenseSampleUploader.exe	vpnTKB.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1611.10393.0_x64__8wekyb3d8bbwe\Maps.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\keytool.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\WORDICON.EXE	vpnTKB.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_1.1702.21039.0_x64__8wekyb3d8bbwe\3DViewer.ResourceResolver.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\EXCEL.EXE	vpnTKB.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftStickyNotes_1.4.101.0_x64__8wekyb3d8bbwe\Microsoft.StickyNotes.exe	vpnTKB.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxIdentityProvider_11.19.19003.0_x64__8wekyb3d8bbwe\XboxIdp.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\SPREADSHEETCOMPARE.EXE	vpnTKB.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc-cache-gen.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Windows Defender\NisSrv.exe	vpnTKB.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\SkypeHost.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.NetFX45.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PPTICO.EXE	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.ShowHelp.exe	vpnTKB.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\89.0.4389.114\elevation_service.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\jconsole.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SELFCERT.EXE	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\AppSharingHookController.exe	vpnTKB.exe
File opened for modification	C:\Program Files (x86)\Windows Mail\WinMail.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\jarsigner.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\Wordconv.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\MSOXMLED.EXE	vpnTKB.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\wsimport.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Mozilla Firefox\crashreporter.exe	vpnTKB.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxApp_25.25.13009.0_x64__8wekyb3d8bbwe\XboxApp.exe	vpnTKB.exe
File opened for modification	C:\Program Files (x86)\Google\Update\DisabledGoogleUpdate.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\89.0.4389.114\Installer\setup.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\extcheck.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\jhat.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\javaw.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Integration\Integrator.exe	vpnTKB.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroLayoutRecognizer\AcroLayoutRecognizer.exe	vpnTKB.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.35.452\GoogleCrashHandler64.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\excelcnv.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msotd.exe	vpnTKB.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.16112.11601.0_x64__8wekyb3d8bbwe\Video.UI.exe	vpnTKB.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Wallet_1.0.16328.0_x64__8wekyb3d8bbwe\Microsoft.Wallet.exe	vpnTKB.exe
File opened for modification	C:\Program Files (x86)\Google\Update\Download\{8A69D345-D564-463C-AFF1-A69D9E530F96}\89.0.4389.114\89.0.4389.114_chrome_installer.exe	vpnTKB.exe
File opened for modification	C:\Program Files (x86)\Windows Mail\wab.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DWTRIG20.EXE	vpnTKB.exe
File opened for modification	C:\Program Files\Mozilla Firefox\plugin-container.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Windows Defender\MsMpEng.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\java-rmi.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\javacpl.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSOHTMED.EXE	vpnTKB.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsCamera_2017.125.40.0_x64__8wekyb3d8bbwe\WindowsCamera.exe	vpnTKB.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\ktab.exe	vpnTKB.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

0227cbdb_by_Libranalysis.exevpnTKB.exe

description	pid	process	target process
PID 800 wrote to memory of 4024	800	0227cbdb_by_Libranalysis.exe	vpnTKB.exe
PID 800 wrote to memory of 4024	800	0227cbdb_by_Libranalysis.exe	vpnTKB.exe
PID 800 wrote to memory of 4024	800	0227cbdb_by_Libranalysis.exe	vpnTKB.exe
PID 4024 wrote to memory of 3144	4024	vpnTKB.exe	cmd.exe
PID 4024 wrote to memory of 3144	4024	vpnTKB.exe	cmd.exe
PID 4024 wrote to memory of 3144	4024	vpnTKB.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\0227cbdb_by_Libranalysis.exe
"C:\Users\Admin\AppData\Local\Temp\0227cbdb_by_Libranalysis.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:800

C:\Users\Admin\AppData\Local\Temp\vpnTKB.exe
C:\Users\Admin\AppData\Local\Temp\vpnTKB.exe
2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4024

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\24911852.bat" "
3⤵
PID:3144

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\24911852.bat
MD5
ffaf77fd3204e751a84840f7f1251c0d

SHA1
7bba8cf93e6250759c15d9dcc34a203bfa26a20c

SHA256
386a31c29f64263b6ca29db5a3b2bc738a83a152aa8357f4aea0ab6352ed80ee

SHA512
2256d00d46af884bfc7d526de455a41c139514246aae32fe19615a4aa9ea8ab179f1bfd21b7df9f2a71321f63930e12ee151a6c6c5266550c7235613efff9884

Download Submit
C:\Users\Admin\AppData\Local\Temp\vpnTKB.exe
MD5
56b2c3810dba2e939a8bb9fa36d3cf96

SHA1
99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

SHA256
4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

SHA512
27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

Download Submit
C:\Users\Admin\AppData\Local\Temp\vpnTKB.exe
MD5
56b2c3810dba2e939a8bb9fa36d3cf96

SHA1
99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

SHA256
4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

SHA512
27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

Download Submit
memory/3144-117-0x0000000000000000-mapping.dmp

Download
memory/4024-114-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads