Malware Analysis Report

2024-09-22 07:17

Sample ID 240531-r5w6zabg4w
Target 875f9ae430d6a0f1a2eb62373c1b51ee_JaffaCakes118
SHA256 d81d270973bace3b8a3c32e8fa7bec1b5a6ff7ad99cba826a69a7be33d71c5cc
Tags
asyncrat default rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

d81d270973bace3b8a3c32e8fa7bec1b5a6ff7ad99cba826a69a7be33d71c5cc

Threat Level: Known bad

The file 875f9ae430d6a0f1a2eb62373c1b51ee_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

asyncrat default rat

AsyncRat

Async RAT payload

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Drops desktop.ini file(s)

Drops file in Windows directory

Enumerates physical storage devices

Unsigned PE

Suspicious use of FindShellTrayWindow

Checks processor information in registry

Suspicious use of AdjustPrivilegeToken

Enumerates system info in registry

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-05-31 14:47

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-31 14:47

Reported

2024-05-31 14:49

Platform

win7-20240221-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\875f9ae430d6a0f1a2eb62373c1b51ee_JaffaCakes118.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

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

Executes dropped EXE

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\875f9ae430d6a0f1a2eb62373c1b51ee_JaffaCakes118.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.new C:\Users\Admin\AppData\Local\Temp\875f9ae430d6a0f1a2eb62373c1b51ee_JaffaCakes118.exe N/A
File created C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.new C:\Users\Admin\AppData\Local\Temp\875f9ae430d6a0f1a2eb62373c1b51ee_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of FindShellTrayWindow

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

Processes

C:\Users\Admin\AppData\Local\Temp\875f9ae430d6a0f1a2eb62373c1b51ee_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\875f9ae430d6a0f1a2eb62373c1b51ee_JaffaCakes118.exe"

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

"C:\Users\Admin\AppData\Roaming\AsyncClient.exe"

C:\Windows\SysWOW64\DllHost.exe

C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}

Network

Country Destination Domain Proto
US 8.8.8.8:53 myconect.ddns.net udp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:7707 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:7707 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net tcp

Files

memory/1984-0-0x0000000074121000-0x0000000074122000-memory.dmp

memory/1984-1-0x0000000074120000-0x00000000746CB000-memory.dmp

memory/1984-2-0x0000000074120000-0x00000000746CB000-memory.dmp

\Users\Admin\AppData\Roaming\AsyncClient.exe

MD5 f6e4d5cc8e61953dba084c233b6cf477
SHA1 3016affb5096883b42916f222e64d5687db13851
SHA256 646875527c817a96575f284ed7508c8f1420a942b9c093369c2038afb1a080b2
SHA512 ce9c66e23b59835ca1d218438e5ac9474a00456e658c12770732e49bb8ef4ac43087e7f3c8e48bf6a3a88c5d34d34a3f4a40681b8d19bcfe7248303847ad8dad

memory/2884-11-0x000000007209E000-0x000000007209F000-memory.dmp

memory/2884-12-0x0000000001060000-0x0000000001072000-memory.dmp

memory/2612-14-0x0000000000120000-0x0000000000122000-memory.dmp

memory/1984-13-0x0000000000E70000-0x0000000000E72000-memory.dmp

memory/1984-19-0x0000000074120000-0x00000000746CB000-memory.dmp

C:\Users\Admin\AppData\Roaming\shipoil.jpg

MD5 7363f95e115ad5cb08d178430e46fb2b
SHA1 8d2ae220cc204de0c2f6aee25d77c99ed7003e18
SHA256 ee04486009e345f00c2c08ccea1231d57dff8213848612dc4d728d29b79ea93d
SHA512 6923284c9b813e80453486193a49fe526cdfa8013039d9b49a6f9ef706a1d615407e26b90c39f7af02ca7f387c893c476b3ef4ded0d00961d75c5b719d92ca5b

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-31 14:47

Reported

2024-05-31 14:49

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\875f9ae430d6a0f1a2eb62373c1b51ee_JaffaCakes118.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\875f9ae430d6a0f1a2eb62373c1b51ee_JaffaCakes118.exe N/A

Executes dropped EXE

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

Drops desktop.ini file(s)

Description Indicator Process Target
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\875f9ae430d6a0f1a2eb62373c1b51ee_JaffaCakes118.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\875f9ae430d6a0f1a2eb62373c1b51ee_JaffaCakes118.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\assembly C:\Users\Admin\AppData\Local\Temp\875f9ae430d6a0f1a2eb62373c1b51ee_JaffaCakes118.exe N/A
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\875f9ae430d6a0f1a2eb62373c1b51ee_JaffaCakes118.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\875f9ae430d6a0f1a2eb62373c1b51ee_JaffaCakes118.exe N/A

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeRestorePrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\AsyncClient.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\875f9ae430d6a0f1a2eb62373c1b51ee_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\875f9ae430d6a0f1a2eb62373c1b51ee_JaffaCakes118.exe"

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

"C:\Users\Admin\AppData\Roaming\AsyncClient.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe

dw20.exe -x -s 1500

Network

Country Destination Domain Proto
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
NL 23.62.61.155:443 www.bing.com tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 155.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 myconect.ddns.net udp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 8.8.8.8:53 198.237.105.184.in-addr.arpa udp
US 184.105.237.198:7707 myconect.ddns.net tcp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:7707 myconect.ddns.net tcp
US 184.105.237.198:7707 myconect.ddns.net tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:7707 myconect.ddns.net tcp
US 184.105.237.198:7707 myconect.ddns.net tcp
US 184.105.237.198:7707 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:7707 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net tcp
US 184.105.237.198:7707 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 184.105.237.198:7707 myconect.ddns.net tcp
US 184.105.237.198:2500 myconect.ddns.net 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 204.79.197.200:443 tse1.mm.bing.net tcp
US 184.105.237.198:7707 myconect.ddns.net tcp
US 184.105.237.198:7707 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp
US 184.105.237.198:7707 myconect.ddns.net tcp
US 184.105.237.198:6606 myconect.ddns.net tcp

Files

memory/212-0-0x00000000749F2000-0x00000000749F3000-memory.dmp

memory/212-1-0x00000000749F0000-0x0000000074FA1000-memory.dmp

memory/212-2-0x00000000749F0000-0x0000000074FA1000-memory.dmp

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

MD5 f6e4d5cc8e61953dba084c233b6cf477
SHA1 3016affb5096883b42916f222e64d5687db13851
SHA256 646875527c817a96575f284ed7508c8f1420a942b9c093369c2038afb1a080b2
SHA512 ce9c66e23b59835ca1d218438e5ac9474a00456e658c12770732e49bb8ef4ac43087e7f3c8e48bf6a3a88c5d34d34a3f4a40681b8d19bcfe7248303847ad8dad

memory/4596-17-0x0000000071A7E000-0x0000000071A7F000-memory.dmp

memory/4596-18-0x0000000000750000-0x0000000000762000-memory.dmp

memory/212-25-0x00000000749F0000-0x0000000074FA1000-memory.dmp

memory/4596-26-0x0000000071A70000-0x0000000072220000-memory.dmp

memory/4596-27-0x0000000071A7E000-0x0000000071A7F000-memory.dmp

memory/4596-28-0x0000000071A70000-0x0000000072220000-memory.dmp