Malware Analysis Report

2025-08-05 12:45

Sample ID 230308-lr8pysfb89
Target TRwu8tfxztNty5tIogFjsKG.zip
SHA256 fa3d349119a0d23573d2f35770da77e082ce3434934a6e98ed43696b40043761
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

fa3d349119a0d23573d2f35770da77e082ce3434934a6e98ed43696b40043761

Threat Level: Known bad

The file TRwu8tfxztNty5tIogFjsKG.zip was found to be: Known bad.

Malicious Activity Summary

emotet epoch4 banker trojan persistence

Emotet

Adds Run key to start application

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: RenamesItself

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

150s

Max time network

173s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\HA8eIaalRc0917mRoS19ZSz9zXs883.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 1968 wrote to memory of 756 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1968 wrote to memory of 756 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1968 wrote to memory of 756 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1968 wrote to memory of 756 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1968 wrote to memory of 756 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\HA8eIaalRc0917mRoS19ZSz9zXs883.dll

C:\Windows\system32\regsvr32.exe

C:\Windows\system32\regsvr32.exe "C:\Windows\system32\USIAuwINDuyMCdqLe\SrPuFFavugiW.dll"

Network

Country Destination Domain Proto
FR 91.121.146.47:8080 tcp
FR 91.121.146.47:8080 tcp
US 66.228.32.31:7080 tcp
KR 182.162.143.56:443 tcp
BR 187.63.160.88:80 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

Files

memory/1968-54-0x0000000001CF0000-0x0000000001DA0000-memory.dmp

memory/1968-56-0x0000000180000000-0x000000018002D000-memory.dmp

memory/1968-59-0x0000000000130000-0x0000000000131000-memory.dmp

memory/756-60-0x0000000001DD0000-0x0000000001E80000-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

151s

Max time network

99s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\HA8eIaalRc0917mRoS19ZSz9zXs883.dll

Signatures

Emotet

trojan banker emotet

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run C:\Windows\system32\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OGulVqRfECSSuXY.dll = "C:\\Windows\\system32\\regsvr32.exe \"C:\\Windows\\system32\\RWOaFUiHGU\\OGulVqRfECSSuXY.dll\"" 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 4288 wrote to memory of 1516 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 4288 wrote to memory of 1516 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\HA8eIaalRc0917mRoS19ZSz9zXs883.dll

C:\Windows\system32\regsvr32.exe

C:\Windows\system32\regsvr32.exe "C:\Windows\system32\RWOaFUiHGU\OGulVqRfECSSuXY.dll"

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.104.205.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 52.168.112.66:443 tcp
US 8.8.8.8:53 199.176.139.52.in-addr.arpa udp
US 8.8.8.8:53 177.238.32.23.in-addr.arpa udp
US 8.8.8.8:53 234.238.32.23.in-addr.arpa udp
US 8.8.8.8:53 62.13.109.52.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 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
NL 173.223.113.164:443 tcp
NL 173.223.113.131:80 tcp
US 204.79.197.203:80 tcp

Files

memory/4288-133-0x0000000180000000-0x000000018002D000-memory.dmp

memory/4288-136-0x0000000000D30000-0x0000000000D31000-memory.dmp

memory/1516-137-0x00000000020A0000-0x0000000002150000-memory.dmp

memory/1516-142-0x00000000020A0000-0x0000000002150000-memory.dmp

memory/1516-155-0x00000000020A0000-0x0000000002150000-memory.dmp