jigsaw | 0452e218b610df4dd501c5090d3df5680013b8eb83b83937c7e2f2ee1588b7a5

Analysis

max time kernel
156s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
27-05-2022 21:27

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General

Target

jigsaw.exe
Size

283KB
MD5

2773e3dc59472296cb0024ba7715a64e
SHA1

27d99fbca067f478bb91cdbcb92f13a828b00859
SHA256

3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
SHA512

6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

Score

10^/10

jigsaw persistence ransomware

Malware Config

Signatures

Jigsaw Ransomware
Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.
ransomware jigsaw

Executes dropped EXE 1 IoCs

pid	Process
3324	drpbx.exe

Modifies extensions of user files 4 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File created	C:\Users\Admin\Pictures\DisconnectUninstall.png.fun	drpbx.exe
File created	C:\Users\Admin\Pictures\RegisterEnter.tif.fun	drpbx.exe
File created	C:\Users\Admin\Pictures\SelectFormat.tif.fun	drpbx.exe
File created	C:\Users\Admin\Pictures\SetImport.raw.fun	drpbx.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	jigsaw.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe"	jigsaw.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\7-Zip\Lang\hi.txt	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-001F-0C0A-1000-0000000FF1CE.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxIdentityProvider_12.50.6001.0_x64__8wekyb3d8bbwe\BuildInfo.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Services.Store.Engagement_10.0.18101.0_x86__8wekyb3d8bbwe\AppxManifest.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Windows.Photos_2019.19071.12548.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsMaps_2019.716.2316.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxGamingOverlay_2.34.28001.0_x64__8wekyb3d8bbwe\networkmanifest.xml	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\bg.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\da.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\lv.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.NET.Native.Framework.1.7_1.7.25531.0_x64__8wekyb3d8bbwe\logo.png	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\da.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color32.bmp	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.NET.Native.Runtime.1.7_1.7.25531.0_x64__8wekyb3d8bbwe\logo.png	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\AppxManifest.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.GetHelp_10.1706.13331.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_x64__8wekyb3d8bbwe\AppxManifest.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftStickyNotes_3.6.73.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ScreenSketch_10.1907.2471.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\an.txt.fun	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\pt.txt.fun	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\yo.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\AUTHORS.txt	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Services.Store.Engagement_10.0.18101.0_x86__8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\kk.txt	drpbx.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0115-0409-1000-0000000FF1CE.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\ThirdPartyNotices.txt	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Media Player\Media Renderer\RenderingControl.xml	drpbx.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0016-0409-1000-0000000FF1CE.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.NET.Native.Framework.2.2_2.2.27405.0_x64__8wekyb3d8bbwe\logo.png	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\de.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\de.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ext.txt	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0016-0000-1000-0000000FF1CE.xml	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ast.txt	drpbx.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-00E2-0409-1000-0000000FF1CE.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.StorePurchaseApp_11811.1001.1813.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\va.txt	drpbx.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\README.txt	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_neutral_split.scale-200_8wekyb3d8bbwe\AppxManifest.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ScreenSketch_10.1907.2471.0_neutral_split.scale-125_8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ast.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\si.txt	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.BingWeather_4.25.20211.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1906.1972.0_x64__8wekyb3d8bbwe\BuildInfo.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ScreenSketch_10.1907.2471.0_neutral_split.scale-125_8wekyb3d8bbwe\AppxManifest.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsStore_11910.1002.5.0_x64__8wekyb3d8bbwe\webviewBoot.min.js	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxGamingOverlay_2.34.28001.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\ThinAppXManifest.xml	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\co.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\mng2.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\uz.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_10.1906.1972.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsStore_11910.1002.5.0_x64__8wekyb3d8bbwe\NoiseAsset_256x256_PNG.png	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\FileSystemMetadata.xml	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ar.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\kab.txt	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Advertising.Xaml_10.1808.3.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\AppxManifest.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.GetHelp_10.1706.13331.0_neutral_split.scale-125_8wekyb3d8bbwe\AppxManifest.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxManifest.xml	drpbx.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 2 IoCs

description	pid	Process	procid_target
PID 816 wrote to memory of 3324	816	jigsaw.exe	79
PID 816 wrote to memory of 3324	816	jigsaw.exe	79

C:\Users\Admin\AppData\Local\Temp\jigsaw.exe
"C:\Users\Admin\AppData\Local\Temp\jigsaw.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:816
- C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
  "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\jigsaw.exe
  2⤵
  - Executes dropped EXE
  - Modifies extensions of user files
  - Drops file in Program Files directory
  PID:3324

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe

Filesize
283KB

MD5
2773e3dc59472296cb0024ba7715a64e

SHA1
27d99fbca067f478bb91cdbcb92f13a828b00859

SHA256
3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7

SHA512
6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

Download Submit
C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe

Filesize
283KB

MD5
2773e3dc59472296cb0024ba7715a64e

SHA1
27d99fbca067f478bb91cdbcb92f13a828b00859

SHA256
3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7

SHA512
6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

Download Submit
memory/816-140-0x00007FFE19360000-0x00007FFE1A244000-memory.dmp

Filesize
14.9MB

Download
memory/816-133-0x0000000000490000-0x00000000004E0000-memory.dmp

Filesize
320KB

Download
memory/816-134-0x00007FFE18790000-0x00007FFE191C6000-memory.dmp

Filesize
10.2MB

Download
memory/816-135-0x00007FFE18460000-0x00007FFE18790000-memory.dmp

Filesize
3.2MB

Download
memory/816-142-0x00007FFE18790000-0x00007FFE191C6000-memory.dmp

Filesize
10.2MB

Download
memory/816-132-0x00007FFE18790000-0x00007FFE191C6000-memory.dmp

Filesize
10.2MB

Download
memory/816-131-0x00007FFE19360000-0x00007FFE1A244000-memory.dmp

Filesize
14.9MB

Download
memory/816-139-0x0000000000490000-0x00000000004E0000-memory.dmp

Filesize
320KB

Download
memory/816-130-0x0000000000490000-0x00000000004E0000-memory.dmp

Filesize
320KB

Download
memory/3324-141-0x00007FFE18790000-0x00007FFE191C6000-memory.dmp

Filesize
10.2MB

Download
memory/3324-143-0x00007FFE19360000-0x00007FFE1A244000-memory.dmp

Filesize
14.9MB

Download
memory/3324-144-0x00007FFE18790000-0x00007FFE191C6000-memory.dmp

Filesize
10.2MB

Download
memory/3324-145-0x00007FFE18460000-0x00007FFE18790000-memory.dmp

Filesize
3.2MB

Download
memory/3324-146-0x00000000004D0000-0x0000000000520000-memory.dmp

Filesize
320KB

Download
memory/3324-147-0x00007FFE19360000-0x00007FFE1A244000-memory.dmp

Filesize
14.9MB

Download
memory/3324-148-0x00007FFE18790000-0x00007FFE191C6000-memory.dmp

Filesize
10.2MB

Download
memory/3324-149-0x00000000004D0000-0x0000000000520000-memory.dmp

Filesize
320KB

Download