Malware Analysis Report

2025-08-05 12:45

Sample ID 230308-lr81qafb92
Target 5HhOyg.zip
SHA256 9044e5a27afb170dc13133af5a3f38dcd146af1a32a7ff2c6f8735c5459f4fb1
Tags
emotet epoch4 banker persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

9044e5a27afb170dc13133af5a3f38dcd146af1a32a7ff2c6f8735c5459f4fb1

Threat Level: Known bad

The file 5HhOyg.zip was found to be: Known bad.

Malicious Activity Summary

emotet epoch4 banker persistence trojan

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: behavioral2

Detonation Overview

Submitted

2023-03-08 09:47

Reported

2023-03-08 09:50

Platform

win10v2004-20230220-en

Max time kernel

144s

Max time network

154s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\Rti0MdfPK83nRhxNnWKwKFw3em5Otoz.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\IYBECfxdC.dll = "C:\\Windows\\system32\\regsvr32.exe \"C:\\Windows\\system32\\PxbVMOgiomyd\\IYBECfxdC.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 2636 wrote to memory of 2504 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 2636 wrote to memory of 2504 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\Rti0MdfPK83nRhxNnWKwKFw3em5Otoz.dll

C:\Windows\system32\regsvr32.exe

C:\Windows\system32\regsvr32.exe "C:\Windows\system32\PxbVMOgiomyd\IYBECfxdC.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 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
FR 40.79.141.152:443 tcp
US 209.197.3.8:80 tcp
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
NL 173.223.113.164:443 tcp
NL 173.223.113.131:80 tcp
US 131.253.33.203:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 2.77.109.52.in-addr.arpa udp
US 8.8.8.8:53 2.36.159.162.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 226.101.242.52.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 154.25.221.88.in-addr.arpa udp
US 93.184.220.29:80 tcp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 55.154.139.52.in-addr.arpa udp
US 8.8.8.8:53 177.238.32.23.in-addr.arpa udp

Files

memory/2636-133-0x0000000002270000-0x0000000002320000-memory.dmp

memory/2636-135-0x0000000180000000-0x000000018002D000-memory.dmp

memory/2636-138-0x00000000008E0000-0x00000000008E1000-memory.dmp

memory/2504-139-0x0000000002100000-0x00000000021B0000-memory.dmp

memory/2504-144-0x0000000002100000-0x00000000021B0000-memory.dmp

memory/2504-149-0x0000000002100000-0x00000000021B0000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-03-08 09:47

Reported

2023-03-08 09:50

Platform

win7-20230220-en

Max time kernel

140s

Max time network

149s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\Rti0MdfPK83nRhxNnWKwKFw3em5Otoz.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 1740 wrote to memory of 752 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1740 wrote to memory of 752 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1740 wrote to memory of 752 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1740 wrote to memory of 752 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\regsvr32.exe
PID 1740 wrote to memory of 752 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\Rti0MdfPK83nRhxNnWKwKFw3em5Otoz.dll

C:\Windows\system32\regsvr32.exe

C:\Windows\system32\regsvr32.exe "C:\Windows\system32\JGQOBOOyxPCHAIR\RkpPZejFxOoSrJd.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
US 167.172.199.165:8080 tcp
US 167.172.199.165:8080 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

Files

memory/1740-54-0x0000000001D30000-0x0000000001DE0000-memory.dmp

memory/1740-56-0x0000000180000000-0x000000018002D000-memory.dmp

memory/1740-59-0x00000000001A0000-0x00000000001A1000-memory.dmp

memory/752-60-0x00000000003C0000-0x0000000000470000-memory.dmp