jigsaw | 20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7

Resubmissions

09-10-2023 22:49

231009-2rt5kagh8t 10

12-06-2022 11:51

220612-n1jtasaden 10

Analysis

max time kernel
112s
max time network
126s
platform
windows7_x64
resource
win7-20220414-en
submitted
12-06-2022 11:51

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Report Analysis Logs

General

Target

20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe
Size

65KB
MD5

269de662c8b796f35e614a1aa807d769
SHA1

43f32f0e0d952dba0bc2cb3c0657291f0930ec8a
SHA256

20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7
SHA512

4d99243d079668e08342dc015e8f0749b452fd0ae4a1f7b7d047a1b499289ca6044691641db661f90978082e8262e43bcb6230f9e87e0f7f770d568d9b381009

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
2044	drpbx.exe

Loads dropped DLL 1 IoCs

pid	Process
904	20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.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-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe"	20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	icanhazip.com

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 4 IoCs

description	pid	Process	procid_target
PID 904 wrote to memory of 2044	904	20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe	27
PID 904 wrote to memory of 2044	904	20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe	27
PID 904 wrote to memory of 2044	904	20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe	27
PID 904 wrote to memory of 2044	904	20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe	27

C:\Users\Admin\AppData\Local\Temp\20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe
"C:\Users\Admin\AppData\Local\Temp\20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:904
- C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
  "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe
  2⤵
  - Executes dropped EXE
  PID:2044

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
65KB

MD5
269de662c8b796f35e614a1aa807d769

SHA1
43f32f0e0d952dba0bc2cb3c0657291f0930ec8a

SHA256
20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7

SHA512
4d99243d079668e08342dc015e8f0749b452fd0ae4a1f7b7d047a1b499289ca6044691641db661f90978082e8262e43bcb6230f9e87e0f7f770d568d9b381009

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

Filesize
65KB

MD5
269de662c8b796f35e614a1aa807d769

SHA1
43f32f0e0d952dba0bc2cb3c0657291f0930ec8a

SHA256
20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7

SHA512
4d99243d079668e08342dc015e8f0749b452fd0ae4a1f7b7d047a1b499289ca6044691641db661f90978082e8262e43bcb6230f9e87e0f7f770d568d9b381009

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

Filesize
65KB

MD5
269de662c8b796f35e614a1aa807d769

SHA1
43f32f0e0d952dba0bc2cb3c0657291f0930ec8a

SHA256
20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7

SHA512
4d99243d079668e08342dc015e8f0749b452fd0ae4a1f7b7d047a1b499289ca6044691641db661f90978082e8262e43bcb6230f9e87e0f7f770d568d9b381009

Download Submit
memory/904-54-0x00000000755A1000-0x00000000755A3000-memory.dmp

Filesize
8KB

Download
memory/904-55-0x0000000074230000-0x00000000747DB000-memory.dmp

Filesize
5.7MB

Download
memory/904-56-0x0000000074230000-0x00000000747DB000-memory.dmp

Filesize
5.7MB

Download
memory/904-62-0x0000000074230000-0x00000000747DB000-memory.dmp

Filesize
5.7MB

Download
memory/2044-63-0x0000000074230000-0x00000000747DB000-memory.dmp

Filesize
5.7MB

Download
memory/2044-64-0x0000000074230000-0x00000000747DB000-memory.dmp

Filesize
5.7MB

Download
memory/2044-65-0x0000000074230000-0x00000000747DB000-memory.dmp

Filesize
5.7MB

Download