Malware Analysis Report

2025-01-02 03:03

Sample ID 240813-fl1jhazgpj
Target 91b5ff4928adac50942dd3bcb685b8bc_JaffaCakes118
SHA256 afb2fe8419f65c8c5e904160ffeebb809106070807d43ee77b857475fd2028a5
Tags
remcos remotehost discovery rat
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

afb2fe8419f65c8c5e904160ffeebb809106070807d43ee77b857475fd2028a5

Threat Level: Known bad

The file 91b5ff4928adac50942dd3bcb685b8bc_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

remcos remotehost discovery rat

Remcos

Program crash

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-13 04:58

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-13 04:58

Reported

2024-08-13 05:00

Platform

win7-20240704-en

Max time kernel

148s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\91b5ff4928adac50942dd3bcb685b8bc_JaffaCakes118.exe"

Signatures

Remcos

rat remcos

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\91b5ff4928adac50942dd3bcb685b8bc_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\notepad.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\91b5ff4928adac50942dd3bcb685b8bc_JaffaCakes118.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\91b5ff4928adac50942dd3bcb685b8bc_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\91b5ff4928adac50942dd3bcb685b8bc_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\91b5ff4928adac50942dd3bcb685b8bc_JaffaCakes118.exe"

C:\Windows\SysWOW64\notepad.exe

C:\Windows\system32\notepad.exe

Network

Country Destination Domain Proto
US 192.152.0.60:1994 tcp
US 192.152.0.60:1994 tcp
US 192.152.0.60:1994 tcp
US 192.152.0.60:1994 tcp
US 192.152.0.60:1994 tcp
US 192.152.0.60:1994 tcp
US 192.152.0.60:1994 tcp

Files

memory/2176-0-0x0000000000400000-0x000000000042D000-memory.dmp

memory/2176-1-0x0000000000413000-0x0000000000419000-memory.dmp

memory/2868-2-0x0000000000080000-0x0000000000081000-memory.dmp

memory/2176-3-0x0000000000413000-0x0000000000419000-memory.dmp

memory/2868-4-0x0000000000400000-0x0000000000420000-memory.dmp

memory/2868-5-0x0000000000400000-0x0000000000420000-memory.dmp

memory/2868-7-0x0000000000400000-0x0000000000420000-memory.dmp

memory/2868-9-0x0000000000400000-0x0000000000420000-memory.dmp

memory/2868-12-0x0000000000400000-0x0000000000420000-memory.dmp

memory/2868-14-0x0000000000400000-0x0000000000420000-memory.dmp

memory/2868-16-0x0000000000400000-0x0000000000420000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-13 04:58

Reported

2024-08-13 05:00

Platform

win10v2004-20240802-en

Max time kernel

140s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\91b5ff4928adac50942dd3bcb685b8bc_JaffaCakes118.exe"

Signatures

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\91b5ff4928adac50942dd3bcb685b8bc_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\91b5ff4928adac50942dd3bcb685b8bc_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\91b5ff4928adac50942dd3bcb685b8bc_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4552 -ip 4552

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 272

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/4552-0-0x0000000000400000-0x000000000042D000-memory.dmp

memory/4552-1-0x0000000000413000-0x0000000000419000-memory.dmp