jigsaw | 20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7

Analysis

max time kernel
120s
max time network
126s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
30-01-2024 05:43

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General

Target

20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe
Size

65KB
MD5

269de662c8b796f35e614a1aa807d769
SHA1

43f32f0e0d952dba0bc2cb3c0657291f0930ec8a
SHA256

20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7
SHA512

4d99243d079668e08342dc015e8f0749b452fd0ae4a1f7b7d047a1b499289ca6044691641db661f90978082e8262e43bcb6230f9e87e0f7f770d568d9b381009
SSDEEP

1536:CjNlIZUY1sIzYi7D10Py7kCZnA37TuPAn:JZUYxYID6DUnArTuC

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
2800	drpbx.exe

Loads dropped DLL 1 IoCs

pid	Process
2760	20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.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-1-5-21-3427588347-1492276948-3422228430-1000\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).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 2800	2760	20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe	28
PID 2760 wrote to memory of 2800	2760	20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe	28
PID 2760 wrote to memory of 2800	2760	20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe	28
PID 2760 wrote to memory of 2800	2760	20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe	28

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:2760
- 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:2800

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
65KB

MD5
269de662c8b796f35e614a1aa807d769

SHA1
43f32f0e0d952dba0bc2cb3c0657291f0930ec8a

SHA256
20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7

SHA512
4d99243d079668e08342dc015e8f0749b452fd0ae4a1f7b7d047a1b499289ca6044691641db661f90978082e8262e43bcb6230f9e87e0f7f770d568d9b381009

Download Submit
memory/2760-0-0x0000000074D90000-0x000000007533B000-memory.dmp

Filesize
5.7MB

Download
memory/2760-2-0x00000000003B0000-0x00000000003F0000-memory.dmp

Filesize
256KB

Download
memory/2760-1-0x0000000074D90000-0x000000007533B000-memory.dmp

Filesize
5.7MB

Download
memory/2760-12-0x0000000074D90000-0x000000007533B000-memory.dmp

Filesize
5.7MB

Download
memory/2800-11-0x0000000000AA0000-0x0000000000AE0000-memory.dmp

Filesize
256KB

Download
memory/2800-13-0x0000000074D90000-0x000000007533B000-memory.dmp

Filesize
5.7MB

Download
memory/2800-14-0x0000000074D90000-0x000000007533B000-memory.dmp

Filesize
5.7MB

Download
memory/2800-15-0x0000000074D90000-0x000000007533B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads