jigsaw | 9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7

Analysis

max time kernel
137s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30-01-2024 05:44

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General

Target

9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe
Size

421KB
MD5

1ff8649e8f8d0652d583b9a648161d3f
SHA1

3441ff983221742ed460f8310e49203b5dc59a15
SHA256

9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7
SHA512

ff67f2584c3646506ad346bac71676e6dd3923e14136e31613cc4bc6a67fe221e4520c034b7ce8c64a4cf2d5ac18e9c083e5e1a630c211cc29ff78d7685a226d
SSDEEP

12288:2w1pOfl/oUzs8vwfzNquSgkE9tSF/aXx:3po/oUNwfpqVrktOc

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
Renames multiple (223) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe

Executes dropped EXE 1 IoCs

pid	Process
3828	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-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe"	9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\7-Zip\Lang\cs.txt.fun	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ps.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-00C1-0000-1000-0000000FF1CE.xml	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 opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxManifest.xml	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\fr.txt.fun	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\Mozilla Firefox\firefox.VisualElementsManifest.xml	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ky.txt.fun	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ne.txt.fun	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ro.txt.fun	drpbx.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-00A1-0000-1000-0000000FF1CE.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\AppxManifest.xml	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\AppXManifest.xml	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\da.txt	drpbx.exe
File created	C:\Program Files\VideoLAN\VLC\NEWS.txt.fun	drpbx.exe
File created	C:\Program Files\VideoLAN\VLC\README.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsStore_11910.1002.5.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Media Player\Media Renderer\DMR_48.png	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\va.txt	drpbx.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\COPYING.txt	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_neutral_split.scale-200_8wekyb3d8bbwe\AppxBlockMap.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.MicrosoftSolitaireCollection_4.4.8204.0_neutral_split.scale-200_8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\hy.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sk.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\sl.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\Java\jre-1.8\THIRDPARTYLICENSEREADME-JAVAFX.txt	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.common.16.xml	drpbx.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.common.16.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.GetHelp_10.1706.13331.0_neutral_split.scale-100_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
File opened for modification	C:\Program Files\7-Zip\Lang\tt.txt	drpbx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\THIRDPARTYLICENSEREADME.txt	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\AppxManifest.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneMusic_2019.19071.19011.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sl.txt	drpbx.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0016-0000-1000-0000000FF1CE.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color120.jpg	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxGamingOverlay_2.34.28001.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\is.txt.fun	drpbx.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-001F-040C-1000-0000000FF1CE.xml.fun	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.GetHelp_10.1706.13331.0_x64__8wekyb3d8bbwe\AppxManifest.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\readme.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\hu.txt.fun	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\kab.txt.fun	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Media Player\Media Renderer\RenderingControl_DMP.xml	drpbx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.22753.0_x64__8wekyb3d8bbwe\AppxManifest.xml	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows NT\TableTextService\TableTextServiceTigrinya.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ba.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\be.txt.fun	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\fur.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\pt-br.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\cs.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\mr.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sr-spc.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ta.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\vi.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\kk.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\pt.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\zh-cn.txt	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 3924 wrote to memory of 3828	3924	9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe	83
PID 3924 wrote to memory of 3828	3924	9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe	83

C:\Users\Admin\AppData\Local\Temp\9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe
"C:\Users\Admin\AppData\Local\Temp\9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3924
- C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
  "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  PID:3828

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
421KB

MD5
1ff8649e8f8d0652d583b9a648161d3f

SHA1
3441ff983221742ed460f8310e49203b5dc59a15

SHA256
9f3c538a1118f82d49a993967c520be4c7f14ad994eb17c4d778e5d7f32241a7

SHA512
ff67f2584c3646506ad346bac71676e6dd3923e14136e31613cc4bc6a67fe221e4520c034b7ce8c64a4cf2d5ac18e9c083e5e1a630c211cc29ff78d7685a226d

Download Submit
memory/3828-21-0x00007FFE32A00000-0x00007FFE333A1000-memory.dmp

Filesize
9.6MB

Download
memory/3828-19-0x0000000001980000-0x0000000001990000-memory.dmp

Filesize
64KB

Download
memory/3828-18-0x00007FFE32A00000-0x00007FFE333A1000-memory.dmp

Filesize
9.6MB

Download
memory/3828-22-0x00000000017A0000-0x00000000017A8000-memory.dmp

Filesize
32KB

Download
memory/3828-43-0x00007FFE32A00000-0x00007FFE333A1000-memory.dmp

Filesize
9.6MB

Download
memory/3828-44-0x0000000001980000-0x0000000001990000-memory.dmp

Filesize
64KB

Download
memory/3924-2-0x0000000001360000-0x0000000001370000-memory.dmp

Filesize
64KB

Download
memory/3924-3-0x000000001BEE0000-0x000000001C3AE000-memory.dmp

Filesize
4.8MB

Download
memory/3924-4-0x000000001B830000-0x000000001B8CC000-memory.dmp

Filesize
624KB

Download
memory/3924-1-0x00007FFE32A00000-0x00007FFE333A1000-memory.dmp

Filesize
9.6MB

Download
memory/3924-20-0x00007FFE32A00000-0x00007FFE333A1000-memory.dmp

Filesize
9.6MB

Download
memory/3924-0-0x00007FFE32A00000-0x00007FFE333A1000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads