Malware Analysis Report

2025-04-03 08:50

Sample ID 230228-wepfnace66
Target 3b4770892d8a8ccac1b96c40d368b08ec9d91e7ac8505b6437d0e7b619a3bbfe.dll
SHA256 3b4770892d8a8ccac1b96c40d368b08ec9d91e7ac8505b6437d0e7b619a3bbfe
Tags
bb17 1677576236 qakbot
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

3b4770892d8a8ccac1b96c40d368b08ec9d91e7ac8505b6437d0e7b619a3bbfe

Threat Level: Known bad

The file 3b4770892d8a8ccac1b96c40d368b08ec9d91e7ac8505b6437d0e7b619a3bbfe.dll was found to be: Known bad.

Malicious Activity Summary

bb17 1677576236 qakbot

Qakbot family

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-02-28 17:50

Signatures

Qakbot family

qakbot

Analysis: behavioral2

Detonation Overview

Submitted

2023-02-28 17:50

Reported

2023-02-28 17:52

Platform

win10v2004-20230220-en

Max time kernel

145s

Max time network

110s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\3b4770892d8a8ccac1b96c40d368b08ec9d91e7ac8505b6437d0e7b619a3bbfe.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1604 wrote to memory of 5060 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1604 wrote to memory of 5060 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1604 wrote to memory of 5060 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 5060 wrote to memory of 3244 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\wermgr.exe
PID 5060 wrote to memory of 3244 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\wermgr.exe
PID 5060 wrote to memory of 3244 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\wermgr.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\3b4770892d8a8ccac1b96c40d368b08ec9d91e7ac8505b6437d0e7b619a3bbfe.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\3b4770892d8a8ccac1b96c40d368b08ec9d91e7ac8505b6437d0e7b619a3bbfe.dll,#1

C:\Windows\SysWOW64\wermgr.exe

C:\Windows\SysWOW64\wermgr.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 5060 -ip 5060

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5060 -s 756

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 29.220.184.93.in-addr.arpa udp
US 8.8.8.8:53 210.81.184.52.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
JP 13.78.111.198:443 tcp
US 8.8.8.8:53 62.13.109.52.in-addr.arpa udp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
NL 173.223.113.164:443 tcp
US 8.8.8.8:53 161.252.72.23.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-02-28 17:50

Reported

2023-02-28 17:52

Platform

win7-20230220-en

Max time kernel

31s

Max time network

34s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\3b4770892d8a8ccac1b96c40d368b08ec9d91e7ac8505b6437d0e7b619a3bbfe.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 528 wrote to memory of 1508 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 528 wrote to memory of 1508 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 528 wrote to memory of 1508 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 528 wrote to memory of 1508 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 528 wrote to memory of 1508 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 528 wrote to memory of 1508 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 528 wrote to memory of 1508 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1508 wrote to memory of 1408 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\wermgr.exe
PID 1508 wrote to memory of 1408 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\wermgr.exe
PID 1508 wrote to memory of 1408 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\wermgr.exe
PID 1508 wrote to memory of 1408 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\wermgr.exe
PID 1508 wrote to memory of 1036 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\WerFault.exe
PID 1508 wrote to memory of 1036 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\WerFault.exe
PID 1508 wrote to memory of 1036 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\WerFault.exe
PID 1508 wrote to memory of 1036 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\3b4770892d8a8ccac1b96c40d368b08ec9d91e7ac8505b6437d0e7b619a3bbfe.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\3b4770892d8a8ccac1b96c40d368b08ec9d91e7ac8505b6437d0e7b619a3bbfe.dll,#1

C:\Windows\SysWOW64\wermgr.exe

C:\Windows\SysWOW64\wermgr.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1508 -s 356

Network

N/A

Files

N/A