Malware Analysis Report

2024-10-10 08:31

Sample ID 240619-3a83tswfkc
Target EnigmaSpf.zip
SHA256 cfc6d572bd3b9eb1ac7781cfcfc60a1b5c536d1d169d7f19e51298b82df1ed4e
Tags
blankgrabber
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

cfc6d572bd3b9eb1ac7781cfcfc60a1b5c536d1d169d7f19e51298b82df1ed4e

Threat Level: Known bad

The file EnigmaSpf.zip was found to be: Known bad.

Malicious Activity Summary

blankgrabber

A stealer written in Python and packaged with Pyinstaller

Blankgrabber family

Unsigned PE

Delays execution with timeout.exe

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-19 23:19

Signatures

A stealer written in Python and packaged with Pyinstaller

Description Indicator Process Target
N/A N/A N/A N/A

Blankgrabber family

blankgrabber

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-19 23:19

Reported

2024-06-19 23:20

Platform

win7-20240611-en

Max time kernel

1s

Max time network

1s

Command Line

"C:\Users\Admin\AppData\Local\Temp\EnigmaSpf.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\EnigmaSpf.exe

"C:\Users\Admin\AppData\Local\Temp\EnigmaSpf.exe"

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\EnigmaSpf.exe" MD5 | find /i /v "md5" | find /i /v "certutil"

C:\Windows\system32\certutil.exe

certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\EnigmaSpf.exe" MD5

C:\Windows\system32\find.exe

find /i /v "md5"

C:\Windows\system32\find.exe

find /i /v "certutil"

Network

Country Destination Domain Proto
US 8.8.8.8:53 keyauth.win udp
US 104.26.1.5:443 keyauth.win tcp
US 8.8.8.8:53 apps.identrust.com udp
N/A 127.0.0.1:49207 tcp
N/A 127.0.0.1:49209 tcp
N/A 23.63.101.171:80 tcp
US 8.8.8.8:53 udp
N/A 199.232.214.172:80 tcp
US 8.8.8.8:53 udp
N/A 23.55.97.11:80 tcp
US 8.8.8.8:53 udp
N/A 23.55.97.11:80 tcp

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-19 23:19

Reported

2024-06-19 23:23

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

51s

Command Line

"C:\Users\Admin\AppData\Local\Temp\EnigmaSpf.exe"

Signatures

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\timeout.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\EnigmaSpf.exe

"C:\Users\Admin\AppData\Local\Temp\EnigmaSpf.exe"

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\EnigmaSpf.exe" MD5 | find /i /v "md5" | find /i /v "certutil"

C:\Windows\system32\certutil.exe

certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\EnigmaSpf.exe" MD5

C:\Windows\system32\find.exe

find /i /v "md5"

C:\Windows\system32\find.exe

find /i /v "certutil"

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c start cmd /C "color b && title Error && echo Couldn't resolve host name && timeout /t 5"

C:\Windows\system32\cmd.exe

cmd /C "color b && title Error && echo Couldn't resolve host name && timeout /t 5"

C:\Windows\system32\timeout.exe

timeout /t 5

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 keyauth.win udp
N/A 127.0.0.1:61577 tcp
N/A 127.0.0.1:61579 tcp

Files

N/A