Malware Analysis Report

2024-10-18 23:54

Sample ID 230713-maldrshb6y
Target jigsaw
SHA256 3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
Tags
jigsaw persistence ransomware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7

Threat Level: Known bad

The file jigsaw was found to be: Known bad.

Malicious Activity Summary

jigsaw persistence ransomware

Jigsaw Ransomware

Executes dropped EXE

Checks computer location settings

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-07-13 10:15

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-07-13 10:15

Reported

2023-07-13 10:18

Platform

win7-20230712-es

Max time kernel

122s

Max time network

129s

Command Line

"C:\Users\Admin\AppData\Local\Temp\jigsaw.exe"

Signatures

Jigsaw Ransomware

ransomware jigsaw

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000\Software\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe" C:\Users\Admin\AppData\Local\Temp\jigsaw.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\jigsaw.exe

"C:\Users\Admin\AppData\Local\Temp\jigsaw.exe"

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

"C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\jigsaw.exe

Network

N/A

Files

memory/2228-54-0x00000000002F0000-0x0000000000340000-memory.dmp

memory/2228-55-0x000007FEF5720000-0x000007FEF60BD000-memory.dmp

memory/2228-56-0x0000000001F70000-0x0000000001FF0000-memory.dmp

memory/2228-57-0x0000000000440000-0x0000000000478000-memory.dmp

memory/2228-58-0x000007FEF5720000-0x000007FEF60BD000-memory.dmp

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

MD5 2773e3dc59472296cb0024ba7715a64e
SHA1 27d99fbca067f478bb91cdbcb92f13a828b00859
SHA256 3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
SHA512 6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

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

MD5 2773e3dc59472296cb0024ba7715a64e
SHA1 27d99fbca067f478bb91cdbcb92f13a828b00859
SHA256 3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
SHA512 6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

memory/2228-66-0x000007FEF5720000-0x000007FEF60BD000-memory.dmp

memory/2188-67-0x00000000002B0000-0x0000000000300000-memory.dmp

memory/2188-68-0x0000000001F60000-0x0000000001FE0000-memory.dmp

memory/2188-65-0x000007FEF5720000-0x000007FEF60BD000-memory.dmp

memory/2188-69-0x000007FEF5720000-0x000007FEF60BD000-memory.dmp

memory/2228-70-0x000007FEF5720000-0x000007FEF60BD000-memory.dmp

memory/2188-71-0x000007FEF5720000-0x000007FEF60BD000-memory.dmp

memory/2188-72-0x0000000001F60000-0x0000000001FE0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-07-13 10:15

Reported

2023-07-13 10:18

Platform

win10v2004-20230703-es

Max time kernel

129s

Max time network

141s

Command Line

"C:\Users\Admin\AppData\Local\Temp\jigsaw.exe"

Signatures

Jigsaw Ransomware

ransomware jigsaw

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-618519468-4027732583-1827558364-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\jigsaw.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-618519468-4027732583-1827558364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe" C:\Users\Admin\AppData\Local\Temp\jigsaw.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3996 wrote to memory of 4028 N/A C:\Users\Admin\AppData\Local\Temp\jigsaw.exe C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
PID 3996 wrote to memory of 4028 N/A C:\Users\Admin\AppData\Local\Temp\jigsaw.exe C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe

Processes

C:\Users\Admin\AppData\Local\Temp\jigsaw.exe

"C:\Users\Admin\AppData\Local\Temp\jigsaw.exe"

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

"C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\jigsaw.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 58.99.105.20.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 254.136.241.8.in-addr.arpa udp
US 8.8.8.8:53 10.179.89.13.in-addr.arpa udp

Files

memory/3996-133-0x00000000008D0000-0x0000000000920000-memory.dmp

memory/3996-134-0x00007FFF076F0000-0x00007FFF08091000-memory.dmp

memory/3996-136-0x00000000010F0000-0x0000000001128000-memory.dmp

memory/3996-135-0x00007FFF076F0000-0x00007FFF08091000-memory.dmp

memory/3996-138-0x000000001BE00000-0x000000001C2CE000-memory.dmp

memory/3996-137-0x00000000013A0000-0x00000000013B0000-memory.dmp

memory/3996-139-0x000000001C2D0000-0x000000001C36C000-memory.dmp

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

MD5 2773e3dc59472296cb0024ba7715a64e
SHA1 27d99fbca067f478bb91cdbcb92f13a828b00859
SHA256 3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
SHA512 6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

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

MD5 2773e3dc59472296cb0024ba7715a64e
SHA1 27d99fbca067f478bb91cdbcb92f13a828b00859
SHA256 3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
SHA512 6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

memory/3996-153-0x00007FFF076F0000-0x00007FFF08091000-memory.dmp

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

MD5 2773e3dc59472296cb0024ba7715a64e
SHA1 27d99fbca067f478bb91cdbcb92f13a828b00859
SHA256 3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
SHA512 6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

memory/4028-154-0x00007FFF076F0000-0x00007FFF08091000-memory.dmp

memory/4028-155-0x0000000001430000-0x0000000001440000-memory.dmp

memory/4028-156-0x00007FFF076F0000-0x00007FFF08091000-memory.dmp

memory/4028-157-0x00007FFF076F0000-0x00007FFF08091000-memory.dmp

memory/4028-158-0x0000000001430000-0x0000000001440000-memory.dmp