Analysis
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max time kernel
150s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
02-10-2023 12:05
Behavioral task
behavioral1
Sample
053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa.exe
Resource
win10v2004-20230915-en
General
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Target
053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa.exe
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Size
249KB
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MD5
33862bca1fe73d44277e9ad4f0aa81e1
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SHA1
e900bf9dc2ad2b18e362c8d42ae8e8ce74fb3ff1
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SHA256
053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa
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SHA512
08c0ef71dcab39f772abf17b2c714bc89fe2add6fa61f734ea04c05770ad93a68e5fd9caf73d740c3c17dce1ebb0563b0bd82b20fc6a7e508a778bccbbf8384c
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SSDEEP
6144:VFVg9EpWQxCKDgqLSV2hIq45K4O4xDL1UnhvHNJ7h0W93MPNdLM7G:/VgGD4KNWViIq4pOOPipHlzsQ7
Malware Config
Signatures
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Jigsaw Ransomware
Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.
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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-1-5-21-1141987721-3945596982-3297311814-1000\Control Panel\International\Geo\Nation 053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa.exe -
Executes dropped EXE 1 IoCs
pid Process 1416 drpbx.exe -
resource yara_rule behavioral2/memory/2740-0-0x0000000000400000-0x0000000000454000-memory.dmp upx behavioral2/files/0x0006000000023251-170.dat upx behavioral2/files/0x0006000000023251-176.dat upx behavioral2/files/0x0006000000023251-177.dat upx behavioral2/memory/2740-180-0x0000000000400000-0x0000000000454000-memory.dmp upx behavioral2/memory/1416-346-0x0000000000400000-0x0000000000454000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe" 053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa.exe -
Drops desktop.ini file(s) 2 IoCs
description ioc Process File created C:\Windows\assembly\Desktop.ini 053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa.exe File opened for modification C:\Windows\assembly\Desktop.ini 053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsAlarms_10.1906.2182.0_neutral_split.scale-125_8wekyb3d8bbwe\AppxBlockMap.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ScreenSketch_10.1907.2471.0_x64__8wekyb3d8bbwe\Assets\ScreenSketchSquare44x44Logo.targetsize-256_altform-unplated_devicefamily-colorfulunplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneMusic_10.19071.19011.0_x64__8wekyb3d8bbwe\Assets\AppList.targetsize-64_altform-lightunplated.png drpbx.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogo.contrast-black_scale-100.png.zemblax drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_x64__8wekyb3d8bbwe\Assets\contrast-white\SplashScreen.scale-200_contrast-white.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\Assets\Dial\ApplySticker.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.22753.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.targetsize-48_contrast-black.png drpbx.exe File created C:\Program Files\7-Zip\Lang\ext.txt.zemblax drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\HxCalendarAppList.targetsize-64.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\Assets\TimerMedTile.contrast-white_scale-200.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\2876_20x20x32.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxA-Generic-Dark.scale-400.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\IC_WelcomeBanner.scale-400.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\Assets\contrast-white\AppPackageAppList.targetsize-48_contrast-white.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_neutral_split.scale-100_kzf8qxf38zg5c\Assets\Images\SkypeMedTile.scale-100.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebMediaExtensions_1.0.20875.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.targetsize-60_contrast-black.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.22753.0_x64__8wekyb3d8bbwe\Assets\AppList.targetsize-30_altform-unplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCamera_2018.826.98.0_x64__8wekyb3d8bbwe\Assets\WindowsIcons\WindowsCameraAppList.targetsize-72_altform-lightunplated.png drpbx.exe File opened for modification C:\Program Files\Microsoft Office\root\vreg\powerpivot.x-none.msi.16.x-none.vreg.dat drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\OneNoteNewNoteSmallTile.scale-100.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\InsiderHubSplashWideTile.scale-100_contrast-black.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_x64__8wekyb3d8bbwe\Assets\contrast-white\AppList.targetsize-32_contrast-white.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\contrast-black\OneNoteNotebookSmallTile.scale-150.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.22753.0_x64__8wekyb3d8bbwe\Assets\contrast-white\StoreLogo.scale-125_contrast-white.png drpbx.exe File created C:\Program Files\7-Zip\Lang\an.txt.zemblax drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCamera_2018.826.98.0_x64__8wekyb3d8bbwe\Assets\WindowsIcons\WindowsCameraAppList.contrast-white_targetsize-256.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\HxA-Advanced-Light.scale-400.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_x64__8wekyb3d8bbwe\Assets\MedTile.scale-125.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\contrast-white\MixedRealityPortalMedTile.scale-100_contrast-white.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxA-GoogleCloudCacheMini.scale-150.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\SmallTile.scale-125.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\SplashScreen.scale-200.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.targetsize-24_altform-unplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\Assets\InsiderHubAppList.targetsize-60_contrast-white.png drpbx.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogoSmall.contrast-white_scale-140.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\Assets\Square310x310Logo.scale-150.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\AppList.targetsize-72.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Windows.Photos_2019.19071.12548.0_x64__8wekyb3d8bbwe\Assets\PhotosAppList.targetsize-96_altform-unplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxA-GoogleCloudCache.scale-125.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\Assets\InsiderHubAppList.targetsize-16.png drpbx.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogoSmall.scale-180.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\contrast-black\LargeTile.scale-400_contrast-black.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebMediaExtensions_1.0.20875.0_x64__8wekyb3d8bbwe\Assets\contrast-white\AppList.targetsize-256_contrast-white.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.YourPhone_0.19051.7.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxManifest.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\HxCalendarAppList.targetsize-256_altform-unplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.targetsize-24_altform-unplated_contrast-black.png drpbx.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\Configuration\config.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\Assets\WorldClockMedTile.contrast-black_scale-200.png drpbx.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\jre\lib\javaws.jar drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.targetsize-80_contrast-black.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ScreenSketch_10.1907.2471.0_x64__8wekyb3d8bbwe\Assets\ScreenSketchSquare44x44Logo.targetsize-32_contrast-white.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\Assets\GamesXboxHubAppList.targetsize-96_contrast-white.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.19071.19011.0_x64__8wekyb3d8bbwe\Assets\FileExtension.targetsize-256.png drpbx.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\ClientARMRefer2019_eula.txt drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\Assets\contrast-white\AppPackageSmallTile.scale-200_contrast-white.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\contrast-white\OneNoteSectionGroupSmallTile.scale-100.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\contrast-white\AppList.targetsize-24_contrast-white.png drpbx.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogo.contrast-white_scale-140.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\Assets\InsiderHubAppList.targetsize-16_altform-unplated.png drpbx.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogo.contrast-white_scale-80.png.zemblax drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-black\HxCalendarAppList.targetsize-20_altform-unplated.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\Date.targetsize-32_contrast-white.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\Assets\AppPackageAppList.targetsize-36_altform-unplated.png drpbx.exe -
Drops file in Windows directory 3 IoCs
description ioc Process File created C:\Windows\assembly\Desktop.ini 053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa.exe File opened for modification C:\Windows\assembly\Desktop.ini 053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa.exe File opened for modification C:\Windows\assembly 053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2740 053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa.exe Token: SeDebugPrivilege 1416 drpbx.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2740 wrote to memory of 1416 2740 053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa.exe 84 PID 2740 wrote to memory of 1416 2740 053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa.exe 84 PID 2740 wrote to memory of 1416 2740 053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa.exe"C:\Users\Admin\AppData\Local\Temp\053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2740 -
C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe"C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa.exe2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
PID:1416
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
249KB
MD533862bca1fe73d44277e9ad4f0aa81e1
SHA1e900bf9dc2ad2b18e362c8d42ae8e8ce74fb3ff1
SHA256053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa
SHA51208c0ef71dcab39f772abf17b2c714bc89fe2add6fa61f734ea04c05770ad93a68e5fd9caf73d740c3c17dce1ebb0563b0bd82b20fc6a7e508a778bccbbf8384c
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Filesize
249KB
MD533862bca1fe73d44277e9ad4f0aa81e1
SHA1e900bf9dc2ad2b18e362c8d42ae8e8ce74fb3ff1
SHA256053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa
SHA51208c0ef71dcab39f772abf17b2c714bc89fe2add6fa61f734ea04c05770ad93a68e5fd9caf73d740c3c17dce1ebb0563b0bd82b20fc6a7e508a778bccbbf8384c
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Filesize
249KB
MD533862bca1fe73d44277e9ad4f0aa81e1
SHA1e900bf9dc2ad2b18e362c8d42ae8e8ce74fb3ff1
SHA256053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa
SHA51208c0ef71dcab39f772abf17b2c714bc89fe2add6fa61f734ea04c05770ad93a68e5fd9caf73d740c3c17dce1ebb0563b0bd82b20fc6a7e508a778bccbbf8384c