jigsaw | 3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7

Analysis

max time kernel
122s
max time network
129s
platform
windows7_x64
resource
win7-20230712-es
resource tags

arch:x64arch:x86image:win7-20230712-eslocale:es-esos:windows7-x64systemwindows
submitted
13-07-2023 10:15

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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

Executes dropped EXE 1 IoCs

pid	Process
2188	drpbx.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-1-5-21-722410544-1258951091-1992882075-1000\Software\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe"	jigsaw.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 2188	2228	jigsaw.exe	28
PID 2228 wrote to memory of 2188	2228	jigsaw.exe	28
PID 2228 wrote to memory of 2188	2228	jigsaw.exe	28

C:\Users\Admin\AppData\Local\Temp\jigsaw.exe
"C:\Users\Admin\AppData\Local\Temp\jigsaw.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2228
- 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
  PID:2188

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
283KB

MD5
2773e3dc59472296cb0024ba7715a64e

SHA1
27d99fbca067f478bb91cdbcb92f13a828b00859

SHA256
3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7

SHA512
6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

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

Filesize
283KB

MD5
2773e3dc59472296cb0024ba7715a64e

SHA1
27d99fbca067f478bb91cdbcb92f13a828b00859

SHA256
3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7

SHA512
6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

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

Filesize
512KB

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

Filesize
320KB

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

Filesize
9.6MB

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

Filesize
9.6MB

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

Filesize
9.6MB

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

Filesize
512KB

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

Filesize
224KB

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

Filesize
9.6MB

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

Filesize
512KB

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

Filesize
9.6MB

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

Filesize
9.6MB

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

Filesize
320KB

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

Filesize
9.6MB

Download