jigsaw | 053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa

Analysis

max time kernel
151s
max time network
124s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
11-10-2023 11:18

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General

Target

Jigsaw2-b.exe
Size

249KB
MD5

33862bca1fe73d44277e9ad4f0aa81e1
SHA1

e900bf9dc2ad2b18e362c8d42ae8e8ce74fb3ff1
SHA256

053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa
SHA512

08c0ef71dcab39f772abf17b2c714bc89fe2add6fa61f734ea04c05770ad93a68e5fd9caf73d740c3c17dce1ebb0563b0bd82b20fc6a7e508a778bccbbf8384c
SSDEEP

6144:VFVg9EpWQxCKDgqLSV2hIq45K4O4xDL1UnhvHNJ7h0W93MPNdLM7G:/VgGD4KNWViIq4pOOPipHlzsQ7

Score

10^/10

jigsaw persistence ransomware upx

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
2728	drpbx.exe

Loads dropped DLL 1 IoCs

pid	Process
2364	Jigsaw2-b.exe

UPX packed file 9 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2364-0-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/memory/2364-165-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/files/0x0008000000014495-176.dat	upx
behavioral1/files/0x0008000000014495-180.dat	upx
behavioral1/files/0x0008000000014495-178.dat	upx
behavioral1/memory/2364-182-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/memory/2728-192-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/memory/2728-350-0x0000000002180000-0x00000000021C0000-memory.dmp	upx
behavioral1/memory/2728-352-0x0000000002180000-0x00000000021C0000-memory.dmp	upx

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-1-5-21-3513876443-2771975297-1923446376-1000\Software\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe"	Jigsaw2-b.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\7-Zip\License.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\vi.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\br.txt	drpbx.exe
File created	C:\Program Files\Java\jre7\THIRDPARTYLICENSEREADME-JAVAFX.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ps.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\zh-cn.txt	drpbx.exe
File opened for modification	C:\Program Files\Java\jre7\THIRDPARTYLICENSEREADME-JAVAFX.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\License.txt	drpbx.exe
File opened for modification	C:\Program Files\Windows NT\TableTextService\TableTextServiceAmharic.txt	drpbx.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\Microsoft.Office.BusinessData.xml.zemblax	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows NT\TableTextService\TableTextServiceArray.txt	drpbx.exe
File opened for modification	C:\Program Files (x86)\Microsoft.NET\RedistList\AssemblyList_4_extended.xml	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\ca.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\et.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\uz.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DissolveNoise.png	drpbx.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\Microsoft.BusinessData.xml.zemblax	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Media Player\Media Renderer\connectionmanager_dmr.xml	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows NT\TableTextService\TableTextServiceSimplifiedQuanPin.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\History.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\fur.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\hi.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ta.txt	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color120.jpg	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Network Sharing\wmpnss_bw48.jpg	drpbx.exe
File opened for modification	C:\Program Files\Windows NT\TableTextService\TableTextServiceDaYi.txt	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\ba.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\hi.txt.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\sr-spl.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\tt.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\zh-cn.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Media Player\Media Renderer\DMR_48.jpg	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\da.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\mk.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DissolveAnother.png	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\yo.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color48.png	drpbx.exe
File opened for modification	C:\Program Files\EnterConfirm.bmp	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\bg.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\is.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ne.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\sv.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\hu.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\nn.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\uk.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\uk.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows Media Player\Media Renderer\RenderingControl.xml	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Games\SpiderSolitaire\SpiderSolitaireMCE.png	drpbx.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\SplashScreen.bmp	drpbx.exe
File opened for modification	C:\Program Files (x86)\Windows NT\TableTextService\TableTextServiceSimplifiedZhengMa.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\cy.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\gl.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\kaa.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\mk.txt	drpbx.exe
File opened for modification	C:\Program Files\7-Zip\Lang\nn.txt	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\lt.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files\Microsoft Games\Solitaire\SolitaireMCE.png	drpbx.exe
File created	C:\Program Files\EnterConfirm.bmp.zemblax	drpbx.exe
File created	C:\Program Files\7-Zip\Lang\he.txt.zemblax	drpbx.exe
File created	C:\Program Files\VideoLAN\VLC\COPYING.txt.zemblax	drpbx.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Microsoft.Office.Interop.InfoPath.SemiTrust.xml	drpbx.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2364	Jigsaw2-b.exe
Token: SeDebugPrivilege	2728	drpbx.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 2728	2364	Jigsaw2-b.exe	28
PID 2364 wrote to memory of 2728	2364	Jigsaw2-b.exe	28
PID 2364 wrote to memory of 2728	2364	Jigsaw2-b.exe	28
PID 2364 wrote to memory of 2728	2364	Jigsaw2-b.exe	28

C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe
"C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
  "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  PID:2728

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

Replay Monitor

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Downloads

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

Filesize
249KB

MD5
33862bca1fe73d44277e9ad4f0aa81e1

SHA1
e900bf9dc2ad2b18e362c8d42ae8e8ce74fb3ff1

SHA256
053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa

SHA512
08c0ef71dcab39f772abf17b2c714bc89fe2add6fa61f734ea04c05770ad93a68e5fd9caf73d740c3c17dce1ebb0563b0bd82b20fc6a7e508a778bccbbf8384c

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

Filesize
249KB

MD5
33862bca1fe73d44277e9ad4f0aa81e1

SHA1
e900bf9dc2ad2b18e362c8d42ae8e8ce74fb3ff1

SHA256
053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa

SHA512
08c0ef71dcab39f772abf17b2c714bc89fe2add6fa61f734ea04c05770ad93a68e5fd9caf73d740c3c17dce1ebb0563b0bd82b20fc6a7e508a778bccbbf8384c

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

Filesize
249KB

MD5
33862bca1fe73d44277e9ad4f0aa81e1

SHA1
e900bf9dc2ad2b18e362c8d42ae8e8ce74fb3ff1

SHA256
053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa

SHA512
08c0ef71dcab39f772abf17b2c714bc89fe2add6fa61f734ea04c05770ad93a68e5fd9caf73d740c3c17dce1ebb0563b0bd82b20fc6a7e508a778bccbbf8384c

Download Submit
memory/2364-41-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-15-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-5-0x0000000002180000-0x00000000021C0000-memory.dmp

Filesize
256KB

Download
memory/2364-6-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-7-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-9-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-13-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-31-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-19-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-23-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-27-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-33-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-39-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-0-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2364-45-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-47-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-51-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-55-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-59-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-61-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-65-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-69-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-67-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-63-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-57-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-53-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-49-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-43-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-37-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-35-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-25-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-29-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-4-0x0000000002180000-0x00000000021C0000-memory.dmp

Filesize
256KB

Download
memory/2364-21-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-17-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-11-0x0000000001DF0000-0x0000000001E24000-memory.dmp

Filesize
208KB

Download
memory/2364-164-0x0000000004720000-0x0000000004721000-memory.dmp

Filesize
4KB

Download
memory/2364-165-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2364-166-0x0000000074580000-0x0000000074B2B000-memory.dmp

Filesize
5.7MB

Download
memory/2364-167-0x0000000074580000-0x0000000074B2B000-memory.dmp

Filesize
5.7MB

Download
memory/2364-168-0x0000000002180000-0x00000000021C0000-memory.dmp

Filesize
256KB

Download
memory/2364-170-0x0000000002180000-0x00000000021C0000-memory.dmp

Filesize
256KB

Download
memory/2364-171-0x0000000002180000-0x00000000021C0000-memory.dmp

Filesize
256KB

Download
memory/2364-172-0x0000000002180000-0x00000000021C0000-memory.dmp

Filesize
256KB

Download
memory/2364-3-0x0000000002180000-0x00000000021C0000-memory.dmp

Filesize
256KB

Download
memory/2364-2-0x0000000074580000-0x0000000074B2B000-memory.dmp

Filesize
5.7MB

Download
memory/2364-179-0x0000000004BF0000-0x0000000004C44000-memory.dmp

Filesize
336KB

Download
memory/2364-1-0x0000000074580000-0x0000000074B2B000-memory.dmp

Filesize
5.7MB

Download
memory/2364-186-0x0000000074580000-0x0000000074B2B000-memory.dmp

Filesize
5.7MB

Download
memory/2364-182-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2728-183-0x0000000074580000-0x0000000074B2B000-memory.dmp

Filesize
5.7MB

Download
memory/2728-187-0x0000000074580000-0x0000000074B2B000-memory.dmp

Filesize
5.7MB

Download
memory/2728-191-0x0000000002180000-0x00000000021C0000-memory.dmp

Filesize
256KB

Download
memory/2728-189-0x0000000002180000-0x00000000021C0000-memory.dmp

Filesize
256KB

Download
memory/2728-192-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2728-184-0x0000000002180000-0x00000000021C0000-memory.dmp

Filesize
256KB

Download
memory/2728-348-0x0000000000800000-0x0000000000801000-memory.dmp

Filesize
4KB

Download
memory/2728-349-0x0000000074580000-0x0000000074B2B000-memory.dmp

Filesize
5.7MB

Download
memory/2728-350-0x0000000002180000-0x00000000021C0000-memory.dmp

Filesize
256KB

Download
memory/2728-352-0x0000000002180000-0x00000000021C0000-memory.dmp

Filesize
256KB

Download
memory/2728-354-0x0000000002180000-0x00000000021C0000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads