Malware Analysis Report

2024-12-07 22:47

Sample ID 240511-rkbpjaea66
Target 34fe5284eba4466c6ab483168aa0e420_JaffaCakes118
SHA256 e38d44886a37f06ccc3b2dee2e063a521999fb207ec8ad519f099581ca80dd58
Tags
remcos 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

e38d44886a37f06ccc3b2dee2e063a521999fb207ec8ad519f099581ca80dd58

Threat Level: Known bad

The file 34fe5284eba4466c6ab483168aa0e420_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

remcos rat

Remcos

Checks computer location settings

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Suspicious use of UnmapMainImage

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-11 14:14

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-11 14:14

Reported

2024-05-11 14:17

Platform

win7-20240419-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\34fe5284eba4466c6ab483168aa0e420_JaffaCakes118.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\pyrocinchonic.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

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

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\34fe5284eba4466c6ab483168aa0e420_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\pyrocinchonic.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\pyrocinchonic.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2396 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\34fe5284eba4466c6ab483168aa0e420_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2396 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\34fe5284eba4466c6ab483168aa0e420_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2396 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\34fe5284eba4466c6ab483168aa0e420_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2396 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\34fe5284eba4466c6ab483168aa0e420_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2396 wrote to memory of 2368 N/A C:\Users\Admin\AppData\Local\Temp\34fe5284eba4466c6ab483168aa0e420_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2396 wrote to memory of 2368 N/A C:\Users\Admin\AppData\Local\Temp\34fe5284eba4466c6ab483168aa0e420_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2396 wrote to memory of 2368 N/A C:\Users\Admin\AppData\Local\Temp\34fe5284eba4466c6ab483168aa0e420_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2396 wrote to memory of 2368 N/A C:\Users\Admin\AppData\Local\Temp\34fe5284eba4466c6ab483168aa0e420_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 3020 wrote to memory of 2704 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\pyrocinchonic.exe
PID 3020 wrote to memory of 2704 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\pyrocinchonic.exe
PID 3020 wrote to memory of 2704 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\pyrocinchonic.exe
PID 3020 wrote to memory of 2704 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\pyrocinchonic.exe

Processes

C:\Users\Admin\AppData\Local\Temp\34fe5284eba4466c6ab483168aa0e420_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\34fe5284eba4466c6ab483168aa0e420_JaffaCakes118.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /TN "Beskytte0" /TR "C:\Users\Admin\AppData\Roaming\pyrocinchonic.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /run /tn "Beskytte0"

C:\Windows\system32\taskeng.exe

taskeng.exe {364DD2E1-C565-407E-9E15-D6C0FE897639} S-1-5-21-481678230-3773327859-3495911762-1000:UIBNQNMA\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\pyrocinchonic.exe

C:\Users\Admin\AppData\Roaming\pyrocinchonic.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 dboynyz.pdns.cz udp
US 103.224.182.245:7575 dboynyz.pdns.cz tcp
US 8.8.8.8:53 streetz.club udp
US 103.224.182.245:53998 dboynyz.pdns.cz tcp
US 103.224.182.245:7575 dboynyz.pdns.cz tcp
US 103.224.182.245:53998 dboynyz.pdns.cz tcp
US 103.224.182.245:7575 dboynyz.pdns.cz tcp

Files

memory/2396-2-0x00000000773D0000-0x00000000774A6000-memory.dmp

C:\Users\Admin\AppData\Roaming\pyrocinchonic.exe

MD5 c4e95c78d3818efca2a9b280a541cd85
SHA1 cd89ef82a995277eafdcf29d2fca1efacaa24778
SHA256 8506e02b3869c95c7f4890277583f9f850c3d414136d2a87491e6e7d2b07c0a7
SHA512 34ec9c21080295a63c5dbe0729d9c98d0beb542b4b47f1ece4dab22e9438ee6d302ac0bc1b775c0c4c563db7fdcf7dff8614ef52075dcd08b6e9a8afc1a04ec6

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-11 14:14

Reported

2024-05-11 14:17

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\34fe5284eba4466c6ab483168aa0e420_JaffaCakes118.exe"

Signatures

Remcos

rat remcos

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\34fe5284eba4466c6ab483168aa0e420_JaffaCakes118.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\pyrocinchonic.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

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

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\34fe5284eba4466c6ab483168aa0e420_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\pyrocinchonic.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\34fe5284eba4466c6ab483168aa0e420_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\34fe5284eba4466c6ab483168aa0e420_JaffaCakes118.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /TN "Beskytte0" /TR "C:\Users\Admin\AppData\Roaming\pyrocinchonic.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /run /tn "Beskytte0"

C:\Users\Admin\AppData\Roaming\pyrocinchonic.exe

C:\Users\Admin\AppData\Roaming\pyrocinchonic.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
NL 23.62.61.185:443 www.bing.com tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 185.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 dboynyz.pdns.cz udp
US 103.224.182.245:7575 dboynyz.pdns.cz tcp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 streetz.club udp
US 103.224.182.245:53998 dboynyz.pdns.cz tcp
US 8.8.8.8:53 streetz.club udp
US 103.224.182.245:7575 dboynyz.pdns.cz tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 streetz.club udp
US 103.224.182.245:53998 dboynyz.pdns.cz tcp
US 8.8.8.8:53 streetz.club udp
US 103.224.182.245:7575 dboynyz.pdns.cz tcp
US 8.8.8.8:53 streetz.club udp
US 103.224.182.245:53998 dboynyz.pdns.cz tcp

Files

memory/4040-2-0x0000000077941000-0x0000000077A61000-memory.dmp

C:\Users\Admin\AppData\Roaming\pyrocinchonic.exe

MD5 c4e95c78d3818efca2a9b280a541cd85
SHA1 cd89ef82a995277eafdcf29d2fca1efacaa24778
SHA256 8506e02b3869c95c7f4890277583f9f850c3d414136d2a87491e6e7d2b07c0a7
SHA512 34ec9c21080295a63c5dbe0729d9c98d0beb542b4b47f1ece4dab22e9438ee6d302ac0bc1b775c0c4c563db7fdcf7dff8614ef52075dcd08b6e9a8afc1a04ec6

memory/2364-9-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2364-12-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2364-14-0x0000000000400000-0x000000000051A000-memory.dmp

memory/2364-17-0x0000000000400000-0x000000000051A000-memory.dmp