Malware Analysis Report

2025-08-05 12:45

Sample ID 230308-lr81qaef9w
Target 3FoI8SH942.zip
SHA256 c0cc58370e1c362fb98653d01a3b36018775602ef2f115ca2ece20257f0e9aa2
Tags
emotet epoch4 banker trojan persistence
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

c0cc58370e1c362fb98653d01a3b36018775602ef2f115ca2ece20257f0e9aa2

Threat Level: Known bad

The file 3FoI8SH942.zip was found to be: Known bad.

Malicious Activity Summary

emotet epoch4 banker trojan persistence

Emotet

Adds Run key to start application

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: RenamesItself

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-03-08 09:47

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-03-08 09:47

Reported

2023-03-08 09:50

Platform

win7-20230220-en

Max time kernel

147s

Max time network

158s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\Q6EsD8SbQvjYePBO034YB6VBwi7FGf.dll

Signatures

Emotet

trojan banker emotet

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\system32\regsvr32.exe N/A
N/A N/A C:\Windows\system32\regsvr32.exe N/A
N/A N/A C:\Windows\system32\regsvr32.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Windows\system32\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1376 wrote to memory of 840 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1376 wrote to memory of 840 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1376 wrote to memory of 840 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1376 wrote to memory of 840 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1376 wrote to memory of 840 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\Q6EsD8SbQvjYePBO034YB6VBwi7FGf.dll

C:\Windows\system32\regsvr32.exe

C:\Windows\system32\regsvr32.exe "C:\Windows\system32\PyxPyNcTBxvfgcb\BkdWtITUyl.dll"

Network

Country Destination Domain Proto
FR 91.121.146.47:8080 tcp
US 66.228.32.31:7080 tcp
US 66.228.32.31:7080 tcp
KR 182.162.143.56:443 tcp
KR 182.162.143.56:443 tcp
BR 187.63.160.88:80 tcp
BR 187.63.160.88:80 tcp
US 167.172.199.165:8080 tcp
US 167.172.199.165:8080 tcp
DE 164.90.222.65:443 tcp
DE 164.90.222.65:443 tcp
US 104.168.155.143:8080 tcp
US 104.168.155.143:8080 tcp
KG 91.207.28.33:8080 tcp
US 72.15.201.15:8080 tcp
KR 183.111.227.137:8080 tcp
IN 103.132.242.26:8080 tcp

Files

memory/1376-54-0x0000000001EC0000-0x0000000001F70000-memory.dmp

memory/1376-56-0x0000000180000000-0x000000018002D000-memory.dmp

memory/1376-59-0x0000000000120000-0x0000000000121000-memory.dmp

memory/840-60-0x0000000001F20000-0x0000000001FD0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-03-08 09:47

Reported

2023-03-08 09:50

Platform

win10v2004-20230220-en

Max time kernel

145s

Max time network

124s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\Q6EsD8SbQvjYePBO034YB6VBwi7FGf.dll

Signatures

Emotet

trojan banker emotet

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XswfEasWUX.dll = "C:\\Windows\\system32\\regsvr32.exe \"C:\\Windows\\system32\\IFFrwqPdF\\XswfEasWUX.dll\"" C:\Windows\system32\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run C:\Windows\system32\regsvr32.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\system32\regsvr32.exe N/A
N/A N/A C:\Windows\system32\regsvr32.exe N/A
N/A N/A C:\Windows\system32\regsvr32.exe N/A
N/A N/A C:\Windows\system32\regsvr32.exe N/A
N/A N/A C:\Windows\system32\regsvr32.exe N/A
N/A N/A C:\Windows\system32\regsvr32.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Windows\system32\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2248 wrote to memory of 4252 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 2248 wrote to memory of 4252 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\Q6EsD8SbQvjYePBO034YB6VBwi7FGf.dll

C:\Windows\system32\regsvr32.exe

C:\Windows\system32\regsvr32.exe "C:\Windows\system32\IFFrwqPdF\XswfEasWUX.dll"

Network

Country Destination Domain Proto
US 8.8.8.8:53 84.150.43.20.in-addr.arpa udp
US 8.8.8.8:53 123.108.74.40.in-addr.arpa udp
US 8.8.8.8:53 11.175.53.84.in-addr.arpa udp
US 8.8.8.8:53 210.81.184.52.in-addr.arpa udp
US 8.8.8.8:53 76.38.195.152.in-addr.arpa udp
US 8.8.8.8:53 58.104.205.20.in-addr.arpa udp
US 8.8.8.8:53 154.25.221.88.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
FR 91.121.146.47:8080 91.121.146.47 tcp
US 8.8.8.8:53 47.146.121.91.in-addr.arpa udp
US 8.8.8.8:53 0.77.109.52.in-addr.arpa udp
NL 173.223.113.164:443 tcp
NL 173.223.113.131:80 tcp
US 131.253.33.203:80 tcp
US 8.8.8.8:53 55.154.139.52.in-addr.arpa udp
NL 8.238.20.126:80 tcp
US 8.8.8.8:53 177.238.32.23.in-addr.arpa udp

Files

memory/2248-133-0x0000000180000000-0x000000018002D000-memory.dmp

memory/2248-136-0x0000000002920000-0x0000000002921000-memory.dmp

memory/4252-140-0x0000000000400000-0x00000000004B0000-memory.dmp

memory/4252-153-0x0000000000400000-0x00000000004B0000-memory.dmp