jigsaw | 91312ac2c8fa00d56b7ce9839f8a2934620f69ef6043a0c177c810870d6edd92

Analysis

max time kernel
82s
max time network
20s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
03-08-2024 03:11

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General

Target

rBlbqI2.exe
Size

291KB
MD5

2fec9bf50de5395f799b23a1099b10d6
SHA1

6000969e75d7d7a3fa1b908bdb9d5daeb5f2534e
SHA256

df049efbfa7ac0b76c8daff5d792c550c7a7a24f6e9e887d01a01013c9caa763
SHA512

5f6885fb1940ee4f84507e2b7929f637d8f264a5c77329aeae31803b772608ea93370177017f90f6f8d8bc9e0b30eb8607ed120d4ead68104fd70feec71a9ab8
SSDEEP

6144:pdSK04ETTZ+4TBpvjLCnVlBpevKBauJirVuD05VSKJ:poL4EnU4T/vjLeVlayRihuA5D

Score

10^/10

jigsaw discovery 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
Renames multiple (227) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Executes dropped EXE 1 IoCs

pid	Process
1092	drpbx.exe

Loads dropped DLL 1 IoCs

pid	Process
2448	rBlbqI2.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-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe"	rBlbqI2.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\VideoLAN\VLC\THANKS.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Media Player\Media Renderer\DMR_120.png	drpbx.exe
File created	C:\Program Files\Mozilla Firefox\private_browsing.VisualElementsManifest.xml.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\an.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\kab.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\mk.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ta.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\vi.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\da.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\fy.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\gu.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ka.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\License.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\eo.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ne.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\pa-in.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\sv.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\THIRDPARTYLICENSEREADME.txt	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Network Sharing\wmpnss_bw120.png	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\History.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\fy.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\hi.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\mng2.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\yo.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\THIRDPARTYLICENSEREADME-JAVAFX.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ku.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\nb.txt	drpbx.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\Microsoft.Office.BusinessApplications.RuntimeUi.xml.zemblax	drpbx.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\Microsoft.SharePoint.BusinessData.Administration.Client.xml.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\eu.txt.zemblax	drpbx.exe
File created	C:\Program Files\VideoLAN\VLC\AUTHORS.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\sw.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\uk.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\Java\jre7\THIRDPARTYLICENSEREADME-JAVAFX.txt	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows NT\TableTextService\TableTextServiceArray.txt	drpbx.exe
File created	C:\Program Files\RequestUnregister.js.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sk.txt	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color32.bmp	drpbx.exe
File created	C:\Program Files\VideoLAN\VLC\NEWS.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files (x86)\Microsoft.NET\RedistList\AssemblyList_4_client.xml	drpbx.exe
File opened for modification	C:\Program Files\GetAdd.mov	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\bn.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\id.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\pa-in.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\sl.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\tk.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ms.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\tr.txt	drpbx.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DissolveAnother.png	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color48.png	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\br.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\et.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\Java\jre7\THIRDPARTYLICENSEREADME.txt	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Media Renderer\DMR_48.png	drpbx.exe
File created	C:\Program Files\Java\jre7\Welcome.html.zemblax	drpbx.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Microsoft.Office.BusinessApplications.Runtime.xml	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\eu.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\lt.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\mk.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\nb.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sr-spl.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ug.txt	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows NT\TableTextService\TableTextServiceYi.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\et.txt	drpbx.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\WindowsUpdate.log	ehshell.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rBlbqI2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	drpbx.exe

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	ehshell.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~Mhz	ehshell.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ehshell.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	ehshell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1760	ehshell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1760	ehshell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2448	rBlbqI2.exe
Token: SeDebugPrivilege	1092	drpbx.exe
Token: SeDebugPrivilege	1760	ehshell.exe
Token: SeShutdownPrivilege	1760	ehshell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2448 wrote to memory of 1092	2448	rBlbqI2.exe	30
PID 2448 wrote to memory of 1092	2448	rBlbqI2.exe	30
PID 2448 wrote to memory of 1092	2448	rBlbqI2.exe	30
PID 2448 wrote to memory of 1092	2448	rBlbqI2.exe	30

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\rBlbqI2.exe
"C:\Users\Admin\AppData\Local\Temp\rBlbqI2.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2448
- C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
  "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\rBlbqI2.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1092

C:\Windows\eHome\ehshell.exe
"C:\Windows\eHome\ehshell.exe" /prefetch:1003 "C:\Users\Admin\Desktop\MeasureInitialize.DVR"
1⤵
- Drops file in Windows directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1760

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
291KB

MD5
2fec9bf50de5395f799b23a1099b10d6

SHA1
6000969e75d7d7a3fa1b908bdb9d5daeb5f2534e

SHA256
df049efbfa7ac0b76c8daff5d792c550c7a7a24f6e9e887d01a01013c9caa763

SHA512
5f6885fb1940ee4f84507e2b7929f637d8f264a5c77329aeae31803b772608ea93370177017f90f6f8d8bc9e0b30eb8607ed120d4ead68104fd70feec71a9ab8

Download Submit
memory/1092-333-0x0000000074790000-0x0000000074D3B000-memory.dmp

Filesize
5.7MB

Download
memory/1092-571-0x0000000074790000-0x0000000074D3B000-memory.dmp

Filesize
5.7MB

Download
memory/1092-570-0x0000000074790000-0x0000000074D3B000-memory.dmp

Filesize
5.7MB

Download
memory/1092-491-0x0000000074790000-0x0000000074D3B000-memory.dmp

Filesize
5.7MB

Download
memory/1092-490-0x0000000074790000-0x0000000074D3B000-memory.dmp

Filesize
5.7MB

Download
memory/1092-489-0x0000000074790000-0x0000000074D3B000-memory.dmp

Filesize
5.7MB

Download
memory/1092-172-0x0000000074790000-0x0000000074D3B000-memory.dmp

Filesize
5.7MB

Download
memory/1092-351-0x0000000074790000-0x0000000074D3B000-memory.dmp

Filesize
5.7MB

Download
memory/1092-331-0x0000000074790000-0x0000000074D3B000-memory.dmp

Filesize
5.7MB

Download
memory/1092-332-0x0000000074790000-0x0000000074D3B000-memory.dmp

Filesize
5.7MB

Download
memory/1760-353-0x000000001CD00000-0x000000001CDB8000-memory.dmp

Filesize
736KB

Download
memory/1760-349-0x000000001DD80000-0x000000001E388000-memory.dmp

Filesize
6.0MB

Download
memory/1760-350-0x000000001E390000-0x000000001E514000-memory.dmp

Filesize
1.5MB

Download
memory/1760-352-0x000000001C970000-0x000000001CA0E000-memory.dmp

Filesize
632KB

Download
memory/2448-34-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-10-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-52-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-50-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-48-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-46-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-44-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-42-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-40-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-38-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-36-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-0-0x0000000074791000-0x0000000074792000-memory.dmp

Filesize
4KB

Download
memory/2448-32-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-30-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-26-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-24-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-20-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-16-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-12-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-54-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-68-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-66-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-64-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-163-0x0000000074790000-0x0000000074D3B000-memory.dmp

Filesize
5.7MB

Download
memory/2448-56-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-171-0x0000000074790000-0x0000000074D3B000-memory.dmp

Filesize
5.7MB

Download
memory/2448-58-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-60-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-62-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-22-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-14-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-6-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-5-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-28-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-18-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-8-0x0000000000840000-0x0000000000874000-memory.dmp

Filesize
208KB

Download
memory/2448-4-0x0000000074790000-0x0000000074D3B000-memory.dmp

Filesize
5.7MB

Download
memory/2448-3-0x0000000074790000-0x0000000074D3B000-memory.dmp

Filesize
5.7MB

Download
memory/2448-2-0x0000000074790000-0x0000000074D3B000-memory.dmp

Filesize
5.7MB

Download
memory/2448-1-0x0000000074790000-0x0000000074D3B000-memory.dmp

Filesize
5.7MB

Download