Malware Analysis Report

2025-08-05 12:44

Sample ID 230308-lr8d7afb88
Target Olggolg3aHWcYpAQtYdrGEo5IC3.zip
SHA256 37c4531329fa012f60ff5ca4b66b6658498bf58b8ba282a782d9da4d8a84104f
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

37c4531329fa012f60ff5ca4b66b6658498bf58b8ba282a782d9da4d8a84104f

Threat Level: Known bad

The file Olggolg3aHWcYpAQtYdrGEo5IC3.zip was found to be: Known bad.

Malicious Activity Summary

emotet epoch4 banker trojan persistence

Emotet

Adds Run key to start application

Suspicious behavior: RenamesItself

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

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

161s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\1XJjowbGw9CafDWMFZbigWvOtVEfvuO.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 1888 wrote to memory of 1728 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1888 wrote to memory of 1728 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1888 wrote to memory of 1728 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1888 wrote to memory of 1728 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1888 wrote to memory of 1728 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\1XJjowbGw9CafDWMFZbigWvOtVEfvuO.dll

C:\Windows\system32\regsvr32.exe

C:\Windows\system32\regsvr32.exe "C:\Windows\system32\PMniWFBO\ZeLpeyv.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
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
GB 159.65.88.10:8080 tcp

Files

memory/1888-54-0x0000000000310000-0x00000000003C0000-memory.dmp

memory/1888-56-0x0000000180000000-0x000000018002D000-memory.dmp

memory/1888-59-0x00000000001A0000-0x00000000001A1000-memory.dmp

memory/1728-60-0x0000000001E40000-0x0000000001EF0000-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

152s

Max time network

153s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\1XJjowbGw9CafDWMFZbigWvOtVEfvuO.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\XoOcMqUT.dll = "C:\\Windows\\system32\\regsvr32.exe \"C:\\Windows\\system32\\XJYITAIBxBrS\\XoOcMqUT.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 384 wrote to memory of 4780 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 384 wrote to memory of 4780 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\1XJjowbGw9CafDWMFZbigWvOtVEfvuO.dll

C:\Windows\system32\regsvr32.exe

C:\Windows\system32\regsvr32.exe "C:\Windows\system32\XJYITAIBxBrS\XoOcMqUT.dll"

Network

Country Destination Domain Proto
US 8.8.8.8:53 123.108.74.40.in-addr.arpa udp
US 8.8.8.8:53 76.38.195.152.in-addr.arpa udp
US 8.8.8.8:53 234.238.32.23.in-addr.arpa udp
US 8.8.8.8:53 32.18.126.40.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
NL 13.69.109.131:443 tcp
US 8.8.8.8:53 199.176.139.52.in-addr.arpa udp
US 93.184.221.240:80 tcp
NL 173.223.113.164:443 tcp
NL 173.223.113.131:80 tcp
FR 91.121.146.47:8080 tcp
US 8.8.8.8:53 47.146.121.91.in-addr.arpa udp
US 93.184.221.240:80 tcp

Files

memory/384-133-0x0000000180000000-0x000000018002D000-memory.dmp

memory/384-136-0x0000000000AF0000-0x0000000000AF1000-memory.dmp

memory/4780-140-0x0000000000400000-0x00000000004B0000-memory.dmp

memory/4780-153-0x0000000000400000-0x00000000004B0000-memory.dmp