jigsaw | 86a391fe7a237f4f17846c53d71e45820411d1a9a6e0c16f22a11ebc491ff9ff

Analysis

max time kernel
14s
max time network
7s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03-08-2024 17:27

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General

Target

jigsaw.exe
Size

283KB
MD5

2773e3dc59472296cb0024ba7715a64e
SHA1

27d99fbca067f478bb91cdbcb92f13a828b00859
SHA256

3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
SHA512

6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262
SSDEEP

6144:7fukPLPvucHiQQQ4uuy9ApZbZWxcZt+kTfMLJTOAZiYSXjjeqXus:7fu5cCT7yYlWi8kTfMLJTOAZiYSXjyqX

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

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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	jigsaw.exe

Executes dropped EXE 1 IoCs

pid	Process
4116	drpbx.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe"	jigsaw.exe

Drops file in Program Files directory 54 IoCs

description	ioc	Process
File created	C:\Program Files\ConvertUninstall.txt.fun	drpbx.exe
File created	C:\Program Files\ReadStop.mpeg.fun	drpbx.exe
File created	C:\Program Files\SaveInvoke.js.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\History.txt	drpbx.exe
File created	C:\Program Files\Crashpad\settings.dat.fun	drpbx.exe
File opened for modification	C:\Program Files\Mozilla Firefox\private_browsing.VisualElementsManifest.xml	drpbx.exe
File created	C:\Program Files\MsEdgeCrashpad\throttle_store.dat.fun	drpbx.exe
File opened for modification	C:\Program Files\UnlockSend.mpeg	drpbx.exe
File created	C:\Program Files\dotnet\ThirdPartyNotices.txt.fun	drpbx.exe
File created	C:\Program Files\Mozilla Firefox\private_browsing.VisualElementsManifest.xml.fun	drpbx.exe
File created	C:\Program Files\MsEdgeCrashpad\settings.dat.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\License.txt	drpbx.exe
File opened for modification	C:\Program Files\UnpublishJoin.wps	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\AppXManifest.xml	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\FileSystemMetadata.xml	drpbx.exe
File opened for modification	C:\Program Files\MsEdgeCrashpad\throttle_store.dat	drpbx.exe
File created	C:\Program Files\WaitMeasure.jpg.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\readme.txt	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\ThinAppXManifest.xml	drpbx.exe
File opened for modification	C:\Program Files\CloseMove.rar	drpbx.exe
File opened for modification	C:\Program Files\ResumeConvertTo.pps	drpbx.exe
File opened for modification	C:\Program Files\TraceUnpublish.m3u	drpbx.exe
File opened for modification	C:\Program Files\Crashpad\settings.dat	drpbx.exe
File created	C:\Program Files\InvokeDebug.rar.fun	drpbx.exe
File opened for modification	C:\Program Files\ReadUpdate.dotm	drpbx.exe
File created	C:\Program Files\ResumeConvertTo.pps.fun	drpbx.exe
File created	C:\Program Files\UseConvertTo.wma.fun	drpbx.exe
File opened for modification	C:\Program Files\dotnet\LICENSE.txt	drpbx.exe
File created	C:\Program Files\TraceUnpublish.m3u.fun	drpbx.exe
File created	C:\Program Files\dotnet\LICENSE.txt.fun	drpbx.exe
File created	C:\Program Files\ExportInstall.png.fun	drpbx.exe
File opened for modification	C:\Program Files\ReadStop.mpeg	drpbx.exe
File created	C:\Program Files\7-Zip\License.txt.fun	drpbx.exe
File created	C:\Program Files\7-Zip\readme.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\ConvertUninstall.txt	drpbx.exe
File created	C:\Program Files\Microsoft Office\AppXManifest.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\InvokeDebug.rar	drpbx.exe
File opened for modification	C:\Program Files\WaitMeasure.jpg	drpbx.exe
File created	C:\Program Files\Microsoft Office\ThinAppXManifest.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\GroupDismount.docx	drpbx.exe
File created	C:\Program Files\UnpublishJoin.wps.fun	drpbx.exe
File opened for modification	C:\Program Files\Mozilla Firefox\firefox.VisualElementsManifest.xml	drpbx.exe
File created	C:\Program Files\CloseMove.rar.fun	drpbx.exe
File created	C:\Program Files\GroupDismount.docx.fun	drpbx.exe
File opened for modification	C:\Program Files\MsEdgeCrashpad\settings.dat	drpbx.exe
File opened for modification	C:\Program Files\UseConvertTo.wma	drpbx.exe
File created	C:\Program Files\Mozilla Firefox\firefox.VisualElementsManifest.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\ExportInstall.png	drpbx.exe
File created	C:\Program Files\ReadUpdate.dotm.fun	drpbx.exe
File opened for modification	C:\Program Files\SaveInvoke.js	drpbx.exe
File created	C:\Program Files\UnlockSend.mpeg.fun	drpbx.exe
File created	C:\Program Files\7-Zip\History.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\dotnet\ThirdPartyNotices.txt	drpbx.exe
File created	C:\Program Files\Microsoft Office\FileSystemMetadata.xml.fun	drpbx.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4500 wrote to memory of 4116	4500	jigsaw.exe	93
PID 4500 wrote to memory of 4116	4500	jigsaw.exe	93

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:4500
- 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
  - Drops file in Program Files directory
  PID:4116

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4432,i,1729213506309163284,12809566808978835441,262144 --variations-seed-version --mojo-platform-channel-handle=4036 /prefetch:8
1⤵
PID:4368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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
memory/4116-20-0x00007FFA2F170000-0x00007FFA2FB11000-memory.dmp

Filesize
9.6MB

Download
memory/4116-21-0x00007FFA2F170000-0x00007FFA2FB11000-memory.dmp

Filesize
9.6MB

Download
memory/4116-22-0x00007FFA2F170000-0x00007FFA2FB11000-memory.dmp

Filesize
9.6MB

Download
memory/4116-23-0x000000001B690000-0x000000001B698000-memory.dmp

Filesize
32KB

Download
memory/4500-0-0x00007FFA2F425000-0x00007FFA2F426000-memory.dmp

Filesize
4KB

Download
memory/4500-1-0x00007FFA2F170000-0x00007FFA2FB11000-memory.dmp

Filesize
9.6MB

Download
memory/4500-2-0x0000000000970000-0x00000000009A8000-memory.dmp

Filesize
224KB

Download
memory/4500-3-0x00007FFA2F170000-0x00007FFA2FB11000-memory.dmp

Filesize
9.6MB

Download
memory/4500-4-0x000000001B4E0000-0x000000001B9AE000-memory.dmp

Filesize
4.8MB

Download
memory/4500-5-0x000000001B9B0000-0x000000001BA4C000-memory.dmp

Filesize
624KB

Download
memory/4500-19-0x00007FFA2F170000-0x00007FFA2FB11000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads