Malware Analysis Report

2024-10-18 21:17

Sample ID 240516-krwjyscg41
Target 4a4a0fa94a50b4ad04ccb4999fa7b89b_JaffaCakes118
SHA256 b760477f768e703c3303ef963fef44f85395c92b96149bb7706393df31ee3e62
Tags
emotet epoch3 banker 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

b760477f768e703c3303ef963fef44f85395c92b96149bb7706393df31ee3e62

Threat Level: Known bad

The file 4a4a0fa94a50b4ad04ccb4999fa7b89b_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

emotet epoch3 banker trojan

Emotet

Emotet payload

Executes dropped EXE

Drops file in System32 directory

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: RenamesItself

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-16 08:50

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-16 08:50

Reported

2024-05-16 08:53

Platform

win7-20240508-en

Max time kernel

129s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4a4a0fa94a50b4ad04ccb4999fa7b89b_JaffaCakes118.exe"

Signatures

Emotet

trojan banker emotet

Emotet payload

trojan banker
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\fdBth\mstask.exe C:\Users\Admin\AppData\Local\Temp\4a4a0fa94a50b4ad04ccb4999fa7b89b_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

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

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4a4a0fa94a50b4ad04ccb4999fa7b89b_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4a4a0fa94a50b4ad04ccb4999fa7b89b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4a4a0fa94a50b4ad04ccb4999fa7b89b_JaffaCakes118.exe"

C:\Windows\SysWOW64\fdBth\mstask.exe

"C:\Windows\SysWOW64\fdBth\mstask.exe"

Network

Country Destination Domain Proto
JP 116.91.240.96:80 tcp
JP 116.91.240.96:80 tcp
IN 167.71.227.113:8080 tcp
IN 167.71.227.113:8080 tcp
CO 190.85.46.52:7080 tcp
CO 190.85.46.52:7080 tcp
US 162.144.42.60:8080 tcp
US 162.144.42.60:8080 tcp

Files

memory/1716-7-0x0000000000230000-0x000000000023F000-memory.dmp

memory/1716-4-0x0000000000270000-0x0000000000280000-memory.dmp

memory/1716-0-0x0000000000250000-0x0000000000262000-memory.dmp

C:\Windows\SysWOW64\fdBth\mstask.exe

MD5 4a4a0fa94a50b4ad04ccb4999fa7b89b
SHA1 6b8e952ff77550718dd04c702e66d7ed5fa7805a
SHA256 b760477f768e703c3303ef963fef44f85395c92b96149bb7706393df31ee3e62
SHA512 9343322904a247fc357177e5da627e2273f902868ce669bb678c1843e65c9f1379225bf2b34901d9554dd46427c941567500273cb2f993f3ef6aabec5ceb296f

memory/1716-8-0x0000000000400000-0x00000000004AD000-memory.dmp

memory/2160-14-0x0000000000200000-0x0000000000210000-memory.dmp

memory/2160-10-0x00000000001E0000-0x00000000001F2000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-16 08:50

Reported

2024-05-16 08:53

Platform

win10v2004-20240508-en

Max time kernel

141s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4a4a0fa94a50b4ad04ccb4999fa7b89b_JaffaCakes118.exe"

Signatures

Emotet

trojan banker emotet

Emotet payload

trojan banker
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\wlanext\NAPCRYPT.exe C:\Users\Admin\AppData\Local\Temp\4a4a0fa94a50b4ad04ccb4999fa7b89b_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4a4a0fa94a50b4ad04ccb4999fa7b89b_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4a4a0fa94a50b4ad04ccb4999fa7b89b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4a4a0fa94a50b4ad04ccb4999fa7b89b_JaffaCakes118.exe"

C:\Windows\SysWOW64\wlanext\NAPCRYPT.exe

"C:\Windows\SysWOW64\wlanext\NAPCRYPT.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
NL 23.62.61.113:443 www.bing.com tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 113.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
JP 116.91.240.96:80 tcp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 28.143.109.104.in-addr.arpa udp
IN 167.71.227.113:8080 tcp
CO 190.85.46.52:7080 tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 162.144.42.60:8080 tcp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
PK 202.166.170.43:80 tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
FI 95.216.205.155:8080 tcp
JP 120.51.34.254:80 tcp

Files

memory/1952-4-0x0000000002100000-0x0000000002110000-memory.dmp

memory/1952-0-0x00000000020E0000-0x00000000020F2000-memory.dmp

memory/1952-7-0x00000000020C0000-0x00000000020CF000-memory.dmp

C:\Windows\SysWOW64\wlanext\NAPCRYPT.exe

MD5 4a4a0fa94a50b4ad04ccb4999fa7b89b
SHA1 6b8e952ff77550718dd04c702e66d7ed5fa7805a
SHA256 b760477f768e703c3303ef963fef44f85395c92b96149bb7706393df31ee3e62
SHA512 9343322904a247fc357177e5da627e2273f902868ce669bb678c1843e65c9f1379225bf2b34901d9554dd46427c941567500273cb2f993f3ef6aabec5ceb296f

memory/1952-9-0x0000000000400000-0x00000000004AD000-memory.dmp

memory/4536-14-0x0000000002490000-0x00000000024A0000-memory.dmp

memory/4536-10-0x0000000002470000-0x0000000002482000-memory.dmp