Malware Analysis Report

2024-12-07 04:13

Sample ID 241113-wf7nmazlfq
Target a8a729321acf73eb7bcc920c4957fa3f3ba7c20ac95c1080ed8fc9e842eb071e
SHA256 a8a729321acf73eb7bcc920c4957fa3f3ba7c20ac95c1080ed8fc9e842eb071e
Tags
emotet epoch3 banker discovery trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

a8a729321acf73eb7bcc920c4957fa3f3ba7c20ac95c1080ed8fc9e842eb071e

Threat Level: Known bad

The file a8a729321acf73eb7bcc920c4957fa3f3ba7c20ac95c1080ed8fc9e842eb071e was found to be: Known bad.

Malicious Activity Summary

emotet epoch3 banker discovery trojan

Emotet

Emotet family

Blocklisted process makes network request

Loads dropped DLL

Drops file in System32 directory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: RenamesItself

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 17:52

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-13 17:52

Reported

2024-11-13 17:55

Platform

win7-20241010-en

Max time kernel

136s

Max time network

151s

Command Line

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

Signatures

Emotet

trojan banker emotet

Emotet family

emotet

Blocklisted process makes network request

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
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\Jujyyngas\byjdkeic.kpv C:\Windows\SysWOW64\rundll32.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

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
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious behavior: RenamesItself

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2496 wrote to memory of 2796 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2496 wrote to memory of 2796 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2496 wrote to memory of 2796 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2496 wrote to memory of 2796 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2496 wrote to memory of 2796 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2496 wrote to memory of 2796 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2496 wrote to memory of 2796 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2796 wrote to memory of 2924 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2796 wrote to memory of 2924 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2796 wrote to memory of 2924 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2796 wrote to memory of 2924 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2796 wrote to memory of 2924 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2796 wrote to memory of 2924 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2796 wrote to memory of 2924 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2924 wrote to memory of 2676 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2924 wrote to memory of 2676 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2924 wrote to memory of 2676 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2924 wrote to memory of 2676 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2924 wrote to memory of 2676 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2924 wrote to memory of 2676 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2924 wrote to memory of 2676 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

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

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\rundll32.exe

C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Jujyyngas\byjdkeic.kpv",PNGJXBqC

C:\Windows\SysWOW64\rundll32.exe

C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Jujyyngas\byjdkeic.kpv",#1

Network

Country Destination Domain Proto
MX 132.248.38.158:80 tcp
MX 132.248.38.158:80 tcp
TH 203.157.152.9:7080 tcp
TH 203.157.152.9:7080 tcp
SG 157.245.145.87:443 tcp
SG 157.245.145.87:443 tcp

Files

memory/2796-0-0x0000000000120000-0x000000000013F000-memory.dmp

memory/2796-1-0x0000000010000000-0x0000000010023000-memory.dmp

memory/2796-2-0x0000000010000000-0x0000000010023000-memory.dmp

memory/2924-3-0x0000000010000000-0x0000000010058000-memory.dmp

memory/2924-4-0x0000000010000000-0x0000000010023000-memory.dmp

memory/2924-5-0x0000000010000000-0x0000000010023000-memory.dmp

memory/2676-6-0x0000000010000000-0x0000000010058000-memory.dmp

memory/2676-7-0x0000000010000000-0x0000000010023000-memory.dmp

memory/2676-8-0x0000000010000000-0x0000000010023000-memory.dmp

memory/2676-9-0x0000000010000000-0x0000000010058000-memory.dmp

memory/2676-10-0x0000000010000000-0x0000000010023000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 17:52

Reported

2024-11-13 17:55

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

156s

Command Line

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

Signatures

Emotet

trojan banker emotet

Emotet family

emotet

Loads dropped DLL

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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\Nphnzgrxuuyeghmm\ieggaiolfsvfpou.ixc C:\Windows\SysWOW64\rundll32.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious behavior: RenamesItself

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4792 wrote to memory of 1364 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4792 wrote to memory of 1364 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4792 wrote to memory of 1364 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1364 wrote to memory of 4716 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1364 wrote to memory of 4716 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1364 wrote to memory of 4716 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

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

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\rundll32.exe

C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Nphnzgrxuuyeghmm\ieggaiolfsvfpou.ixc",JrcDyDPwdpaq

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp

Files

memory/1364-0-0x0000000001060000-0x000000000107F000-memory.dmp

memory/1364-1-0x0000000010000000-0x0000000010023000-memory.dmp

memory/1364-3-0x0000000010000000-0x0000000010023000-memory.dmp

C:\Windows\SysWOW64\Nphnzgrxuuyeghmm\ieggaiolfsvfpou.ixc

MD5 3e1249e4d0b0b61d493da93139b9f3a4
SHA1 82863b73820e293793dc90da9635c390fc928ef7
SHA256 03ff40768f2c5dfb8c60c977b173ab72abc0932ccd13d139115bf7f0ddcdb323
SHA512 4cd7757a187ff99034347bd125e98170832e193ad13f63754f3ee1a159f0d72c59abcd2f9755869ce533c765b9664603c6c38961c49149ea042e7e6894a9aef6