Malware Analysis Report

2025-01-22 18:50

Sample ID 240316-nrw29scc37
Target cdf7aac3a8c03ba7b05a36da78e1f078
SHA256 a7e31f2bbf259c8c6e7340af60c71c888bd66d5aef652d99fbf8f44fdcfc3d6c
Tags
gozi 2500 banker isfb trojan
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

a7e31f2bbf259c8c6e7340af60c71c888bd66d5aef652d99fbf8f44fdcfc3d6c

Threat Level: Known bad

The file cdf7aac3a8c03ba7b05a36da78e1f078 was found to be: Known bad.

Malicious Activity Summary

gozi 2500 banker isfb trojan

Gozi

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-03-16 11:38

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-16 11:38

Reported

2024-03-16 11:41

Platform

win7-20240221-en

Max time kernel

142s

Max time network

121s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\cdf7aac3a8c03ba7b05a36da78e1f078.dll,#1

Signatures

Gozi

banker trojan gozi

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2368 wrote to memory of 2980 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2368 wrote to memory of 2980 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2368 wrote to memory of 2980 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2368 wrote to memory of 2980 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2368 wrote to memory of 2980 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2368 wrote to memory of 2980 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2368 wrote to memory of 2980 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\cdf7aac3a8c03ba7b05a36da78e1f078.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\cdf7aac3a8c03ba7b05a36da78e1f078.dll,#1

Network

N/A

Files

memory/2980-0-0x0000000075350000-0x00000000753A1000-memory.dmp

memory/2980-1-0x0000000075350000-0x00000000753A1000-memory.dmp

memory/2980-2-0x0000000000100000-0x0000000000101000-memory.dmp

memory/2980-3-0x0000000075350000-0x00000000753A1000-memory.dmp

memory/2980-4-0x0000000075350000-0x00000000753A1000-memory.dmp

memory/2980-5-0x0000000075350000-0x00000000753A1000-memory.dmp

memory/2980-6-0x0000000075350000-0x00000000753A1000-memory.dmp

memory/2980-10-0x0000000000130000-0x000000000013D000-memory.dmp

memory/2980-13-0x0000000075350000-0x00000000753A1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-16 11:38

Reported

2024-03-16 11:41

Platform

win10v2004-20240226-en

Max time kernel

144s

Max time network

150s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\cdf7aac3a8c03ba7b05a36da78e1f078.dll,#1

Signatures

Gozi

banker trojan gozi

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3908 wrote to memory of 2128 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3908 wrote to memory of 2128 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3908 wrote to memory of 2128 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\cdf7aac3a8c03ba7b05a36da78e1f078.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\cdf7aac3a8c03ba7b05a36da78e1f078.dll,#1

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4156 --field-trial-handle=2180,i,12780723798465539942,12010519452607841069,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 209.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 gtr.antoinfer.com udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 app.bighomegl.at udp
US 8.8.8.8:53 gtr.antoinfer.com udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 142.250.179.234:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 234.179.250.142.in-addr.arpa udp
US 8.8.8.8:53 152.141.79.40.in-addr.arpa udp
US 8.8.8.8:53 app.bighomegl.at udp

Files

memory/2128-0-0x0000000075700000-0x0000000075751000-memory.dmp

memory/2128-1-0x0000000001310000-0x0000000001311000-memory.dmp

memory/2128-2-0x0000000075700000-0x0000000075751000-memory.dmp

memory/2128-3-0x0000000075700000-0x0000000075751000-memory.dmp

memory/2128-4-0x0000000075700000-0x0000000075751000-memory.dmp

memory/2128-5-0x0000000075700000-0x0000000075751000-memory.dmp

memory/2128-6-0x0000000001310000-0x0000000001311000-memory.dmp

memory/2128-7-0x0000000075700000-0x0000000075751000-memory.dmp

memory/2128-8-0x0000000002D20000-0x0000000002D2D000-memory.dmp