599c0f76705b6dd06b943bbc7eea222a01d813cce756f07e05e126c7ce743b12

Analysis

max time kernel
45s
max time network
49s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
26-11-2022 09:02

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General

Target

Fiscal_Eletronico.exe
Size

37KB
MD5

79d4353d76a1e90e44cecfe752411da4
SHA1

3a2d58473740dcafb2d5fc9d24ebaa608534eba0
SHA256

bc5195bb7590b14935ccdcf2ca8d85c225ccd0c2f3822e65ebe90e9b011fe94e
SHA512

f61fbb233a9a4bf4b878e72464aded2bad44cbc8110e1010a958a02de952ee20c8b057c385cd605ba45ed23a4b2a75f8374140a620ba0bd833abc45b5f5aed6c
SSDEEP

384:XQzz1QFgyNn8pXDLf45TQfeyh8yF9Ur6J9djOA71PHy2bLf45sf6Qfz7NF8Fww8E:XQzzcgyN8pX3lB5J9xO6TflbtX

Score

8^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

RYNKSFQE.exe

pid process

268 RYNKSFQE.exe
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

pid	process
268	RYNKSFQE.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Fiscal_Eletronico.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\RYNKSFQE = "C:\\Users\\Admin\\AppData\\Roaming\\RYNKSFQE.exe"	Fiscal_Eletronico.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

Fiscal_Eletronico.exe

description	pid	process	target process
PID 1324 wrote to memory of 268	1324	Fiscal_Eletronico.exe	RYNKSFQE.exe
PID 1324 wrote to memory of 268	1324	Fiscal_Eletronico.exe	RYNKSFQE.exe
PID 1324 wrote to memory of 268	1324	Fiscal_Eletronico.exe	RYNKSFQE.exe

C:\Users\Admin\AppData\Local\Temp\Fiscal_Eletronico.exe
"C:\Users\Admin\AppData\Local\Temp\Fiscal_Eletronico.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1324
- C:\Users\Admin\AppData\Roaming\RYNKSFQE.exe
  C:\Users\Admin\AppData\Roaming\RYNKSFQE.exe
  2⤵
  - Executes dropped EXE
  PID:268

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

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\RYNKSFQE.exe

Filesize
17KB

MD5
19b8859e8a4251aa0815e747481034b9

SHA1
c15405d5951baa266b576eddab0fca1870d1e2d3

SHA256
8effa1bc2b177a9088bf61f25e955e1d91586d8753b6cda33be1ac197fcfaf91

SHA512
940a5b4d9dd573ea1bbfa75ac55bfeaa33d9ffa719d0bd5f4359063eb76d5aecaf2fa46ee2a198fdf145e6e840402476d2ce5270d81830d3d0ce5649bebef5c4

Download Submit
C:\Users\Admin\AppData\Roaming\RYNKSFQE.exe

Filesize
17KB

MD5
19b8859e8a4251aa0815e747481034b9

SHA1
c15405d5951baa266b576eddab0fca1870d1e2d3

SHA256
8effa1bc2b177a9088bf61f25e955e1d91586d8753b6cda33be1ac197fcfaf91

SHA512
940a5b4d9dd573ea1bbfa75ac55bfeaa33d9ffa719d0bd5f4359063eb76d5aecaf2fa46ee2a198fdf145e6e840402476d2ce5270d81830d3d0ce5649bebef5c4

Download Submit
memory/268-56-0x0000000000000000-mapping.dmp

Download
memory/268-59-0x000007FEF37E0000-0x000007FEF4203000-memory.dmp

Filesize
10.1MB

Download
memory/268-60-0x000007FEF2740000-0x000007FEF37D6000-memory.dmp

Filesize
16.6MB

Download
memory/268-62-0x000000001B9A0000-0x000000001BC9F000-memory.dmp

Filesize
3.0MB

Download
memory/268-64-0x00000000008D6000-0x00000000008F5000-memory.dmp

Filesize
124KB

Download
memory/268-65-0x00000000008D6000-0x00000000008F5000-memory.dmp

Filesize
124KB

Download
memory/1324-54-0x000007FEF37E0000-0x000007FEF4203000-memory.dmp

Filesize
10.1MB

Download
memory/1324-55-0x000007FEF2740000-0x000007FEF37D6000-memory.dmp

Filesize
16.6MB

Download
memory/1324-61-0x0000000000B06000-0x0000000000B25000-memory.dmp

Filesize
124KB

Download
memory/1324-63-0x0000000000B06000-0x0000000000B25000-memory.dmp

Filesize
124KB

Download