jigsaw | 0ec947a4f30a6ad7d055c72f5d6c1ffe7a538349f41e8156e9aa5c7a8b0d7811

Resubmissions

09-10-2023 22:49

231009-2rxwfsgh8z 10

06-03-2021 22:20

210306-e542m4kcwn 10

09-11-2020 19:51

201109-ldpapz7ekx 10

Analysis

max time kernel
4s
max time network
12s
platform
windows7_x64
resource
win7v20201028
submitted
06-03-2021 22:20

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General

Target

SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe
Size

291KB
MD5

5a5c745bf3e97fe2be01880132662f28
SHA1

924af25d379fc88319bc55958db898dbf5054309
SHA256

0ec947a4f30a6ad7d055c72f5d6c1ffe7a538349f41e8156e9aa5c7a8b0d7811
SHA512

151e4a07e19350d677e049c57c971b64924150eec007e665843cb6142ec73fc06ae4145c64164d3f7f25a376a7536ac6d9b3c85180503549a0c86f09cc0ded10

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

Processes:

drpbx.exe

pid process

1984 drpbx.exe
Loads dropped DLL 1 IoCs

Processes:

SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe

pid process

1740 SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe

pid	process
1984	drpbx.exe

pid	process
1740	SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe"	SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe

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 AdjustPrivilegeToken 2 IoCs

Processes:

SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exedrpbx.exe

description pid process

Token: SeDebugPrivilege 1740 SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe
Token: SeDebugPrivilege 1984 drpbx.exe

description	pid	process
Token: SeDebugPrivilege	1740	SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe
Token: SeDebugPrivilege	1984	drpbx.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe

description	pid	process	target process
PID 1740 wrote to memory of 1984	1740	SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe	drpbx.exe
PID 1740 wrote to memory of 1984	1740	SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe	drpbx.exe
PID 1740 wrote to memory of 1984	1740	SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe	drpbx.exe
PID 1740 wrote to memory of 1984	1740	SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe	drpbx.exe

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1740

C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
"C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1984

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
MD5
5a5c745bf3e97fe2be01880132662f28

SHA1
924af25d379fc88319bc55958db898dbf5054309

SHA256
0ec947a4f30a6ad7d055c72f5d6c1ffe7a538349f41e8156e9aa5c7a8b0d7811

SHA512
151e4a07e19350d677e049c57c971b64924150eec007e665843cb6142ec73fc06ae4145c64164d3f7f25a376a7536ac6d9b3c85180503549a0c86f09cc0ded10

Download Submit
\Users\Admin\AppData\Local\Drpbx\drpbx.exe
MD5
5a5c745bf3e97fe2be01880132662f28

SHA1
924af25d379fc88319bc55958db898dbf5054309

SHA256
0ec947a4f30a6ad7d055c72f5d6c1ffe7a538349f41e8156e9aa5c7a8b0d7811

SHA512
151e4a07e19350d677e049c57c971b64924150eec007e665843cb6142ec73fc06ae4145c64164d3f7f25a376a7536ac6d9b3c85180503549a0c86f09cc0ded10

Download Submit
memory/1740-11-0x0000000001FA0000-0x0000000001FA1000-memory.dmp

Filesize
4KB

Download
memory/1740-3-0x00000000766F1000-0x00000000766F3000-memory.dmp

Filesize
8KB

Download
memory/1740-5-0x0000000001FB0000-0x0000000001FB1000-memory.dmp

Filesize
4KB

Download
memory/1740-10-0x0000000001FB7000-0x0000000001FB9000-memory.dmp

Filesize
8KB

Download
memory/1740-8-0x0000000001FB2000-0x0000000001FB4000-memory.dmp

Filesize
8KB

Download
memory/1740-7-0x0000000001FB1000-0x0000000001FB2000-memory.dmp

Filesize
4KB

Download
memory/1740-2-0x0000000001DF0000-0x0000000001E01000-memory.dmp

Filesize
68KB

Download
memory/1984-6-0x0000000000000000-mapping.dmp

Download
memory/1984-12-0x0000000002050000-0x0000000002061000-memory.dmp

Filesize
68KB

Download
memory/1984-15-0x0000000002151000-0x0000000002152000-memory.dmp

Filesize
4KB

Download
memory/1984-14-0x0000000002150000-0x0000000002151000-memory.dmp

Filesize
4KB

Download
memory/1984-17-0x0000000002157000-0x0000000002159000-memory.dmp

Filesize
8KB

Download
memory/1984-16-0x0000000002152000-0x0000000002154000-memory.dmp

Filesize
8KB

Download
memory/1984-18-0x0000000001E30000-0x0000000001E31000-memory.dmp

Filesize
4KB

Download