jigsaw | 992149ca2244ebd9ec96f01f29c73acce0dc5af609734077aea5978b5ce203a5

Analysis

max time kernel
119s
max time network
125s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
30-01-2024 05:44

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General

Target

992149ca2244ebd9ec96f01f29c73acce0dc5af609734077aea5978b5ce203a5.exe
Size

2.1MB
MD5

8cae61eff562d9b28d521900692bf516
SHA1

a38dd36172e145186b776bea4f5f2773504c68b0
SHA256

992149ca2244ebd9ec96f01f29c73acce0dc5af609734077aea5978b5ce203a5
SHA512

ff21a35638aaef98cf95e776d67a89cdf8ce98fd17f5f5ad52ed89ffa1b022f2e928061efb1543cbb112f750f6002ef62e08a68b7d047d19959acb06ffbc8565
SSDEEP

49152:amer6a3OsA3P+SJfWDzG5nEm6oPTOSi2z7BGsW:aHP3OP32SJODqKi6/IBGl

Score

10^/10

jigsaw persistence ransomware spyware stealer

Malware Config

Signatures

Jigsaw Ransomware
Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.
ransomware jigsaw

Detects executables manipulated with Fody 1 IoCs

resource	yara_rule
behavioral1/files/0x0007000000014fc0-9.dat	INDICATOR_EXE_Packed_Fody

Executes dropped EXE 1 IoCs

pid	Process
2436	MicrosoftWordUpdate.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

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\update.exe = "C:\\Users\\Admin\\AppData\\Roaming\\MozillaFirefoxUpdate\\update.exe"	992149ca2244ebd9ec96f01f29c73acce0dc5af609734077aea5978b5ce203a5.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 2000 wrote to memory of 2436	2000	992149ca2244ebd9ec96f01f29c73acce0dc5af609734077aea5978b5ce203a5.exe	28
PID 2000 wrote to memory of 2436	2000	992149ca2244ebd9ec96f01f29c73acce0dc5af609734077aea5978b5ce203a5.exe	28
PID 2000 wrote to memory of 2436	2000	992149ca2244ebd9ec96f01f29c73acce0dc5af609734077aea5978b5ce203a5.exe	28

C:\Users\Admin\AppData\Local\Temp\992149ca2244ebd9ec96f01f29c73acce0dc5af609734077aea5978b5ce203a5.exe
"C:\Users\Admin\AppData\Local\Temp\992149ca2244ebd9ec96f01f29c73acce0dc5af609734077aea5978b5ce203a5.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2000
- C:\Users\Admin\AppData\Local\OfficeUpdate\MicrosoftWordUpdate.exe
  "C:\Users\Admin\AppData\Local\OfficeUpdate\MicrosoftWordUpdate.exe" C:\Users\Admin\AppData\Local\Temp\992149ca2244ebd9ec96f01f29c73acce0dc5af609734077aea5978b5ce203a5.exe
  2⤵
  - Executes dropped EXE
  PID:2436

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\OfficeUpdate\MicrosoftWordUpdate.exe

Filesize
2.1MB

MD5
8cae61eff562d9b28d521900692bf516

SHA1
a38dd36172e145186b776bea4f5f2773504c68b0

SHA256
992149ca2244ebd9ec96f01f29c73acce0dc5af609734077aea5978b5ce203a5

SHA512
ff21a35638aaef98cf95e776d67a89cdf8ce98fd17f5f5ad52ed89ffa1b022f2e928061efb1543cbb112f750f6002ef62e08a68b7d047d19959acb06ffbc8565

Download Submit
memory/2000-0-0x000007FEF6150000-0x000007FEF6AED000-memory.dmp

Filesize
9.6MB

Download
memory/2000-3-0x0000000000AE0000-0x0000000000B60000-memory.dmp

Filesize
512KB

Download
memory/2000-5-0x000007FEF6150000-0x000007FEF6AED000-memory.dmp

Filesize
9.6MB

Download
memory/2000-11-0x000007FEF6150000-0x000007FEF6AED000-memory.dmp

Filesize
9.6MB

Download
memory/2436-12-0x000007FEF6150000-0x000007FEF6AED000-memory.dmp

Filesize
9.6MB

Download
memory/2436-13-0x0000000002280000-0x0000000002300000-memory.dmp

Filesize
512KB

Download
memory/2436-14-0x000007FEF6150000-0x000007FEF6AED000-memory.dmp

Filesize
9.6MB

Download
memory/2436-15-0x000007FEF6150000-0x000007FEF6AED000-memory.dmp

Filesize
9.6MB

Download
memory/2436-16-0x000007FEF6150000-0x000007FEF6AED000-memory.dmp

Filesize
9.6MB

Download
memory/2436-17-0x0000000002280000-0x0000000002300000-memory.dmp

Filesize
512KB

Download
memory/2436-20-0x0000000002280000-0x0000000002300000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads