Malware Analysis Report

2024-09-22 07:08

Sample ID 240530-xl2j8sgb9w
Target Cranium.exe
SHA256 9864678182d8d06ed1bebd8aad901cab4f77cfced7547f5e365e8c1854ef2cdf
Tags
rat default asyncrat evasion trojan spyware stealer
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

9864678182d8d06ed1bebd8aad901cab4f77cfced7547f5e365e8c1854ef2cdf

Threat Level: Known bad

The file Cranium.exe was found to be: Known bad.

Malicious Activity Summary

rat default asyncrat evasion trojan spyware stealer

Asyncrat family

Modifies Windows Defender Real-time Protection settings

AsyncRat

Async RAT payload

Checks computer location settings

Windows security modification

Reads user/profile data of web browsers

Legitimate hosting services abused for malware hosting/C2

Enumerates physical storage devices

Unsigned PE

Delays execution with timeout.exe

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious behavior: AddClipboardFormatListener

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-05-30 18:57

Signatures

Async RAT payload

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

Asyncrat family

asyncrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-30 18:57

Reported

2024-05-30 18:59

Platform

win7-20240419-en

Max time kernel

146s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Cranium.exe"

Signatures

AsyncRat

rat asyncrat

Modifies Windows Defender Real-time Protection settings

evasion trojan
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection C:\Users\Admin\AppData\Local\Temp\Cranium.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1" C:\Users\Admin\AppData\Local\Temp\Cranium.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1" C:\Users\Admin\AppData\Local\Temp\Cranium.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1" C:\Users\Admin\AppData\Local\Temp\Cranium.exe N/A

Windows security modification

evasion trojan
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features C:\Users\Admin\AppData\Local\Temp\Cranium.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0" C:\Users\Admin\AppData\Local\Temp\Cranium.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A pastebin.com N/A N/A
N/A pastebin.com N/A N/A
N/A 5.tcp.eu.ngrok.io N/A N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Cranium.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Cranium.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Cranium.exe

"C:\Users\Admin\AppData\Local\Temp\Cranium.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"powershell" Get-MpPreference -verbose

Network

Country Destination Domain Proto
US 8.8.8.8:53 pastebin.com udp
US 172.67.19.24:443 pastebin.com tcp
US 8.8.8.8:53 5.tcp.eu.ngrok.io udp
DE 3.67.161.133:17731 5.tcp.eu.ngrok.io tcp
DE 3.67.161.133:17731 5.tcp.eu.ngrok.io tcp
DE 3.67.161.133:17731 5.tcp.eu.ngrok.io tcp
DE 3.67.161.133:17731 5.tcp.eu.ngrok.io tcp

Files

memory/1148-0-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

memory/1148-1-0x0000000000820000-0x0000000000832000-memory.dmp

memory/1148-2-0x0000000074D40000-0x000000007542E000-memory.dmp

memory/1148-20-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

memory/1148-21-0x0000000074D40000-0x000000007542E000-memory.dmp

memory/1148-23-0x0000000005080000-0x00000000050E4000-memory.dmp

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

MD5 49aebf8cbd62d92ac215b2923fb1b9f5
SHA1 1723be06719828dda65ad804298d0431f6aff976
SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512 bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

C:\Users\Admin\AppData\Local\Temp\Tar772A.tmp

MD5 4ea6026cf93ec6338144661bf1202cd1
SHA1 a1dec9044f750ad887935a01430bf49322fbdcb7
SHA256 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
SHA512 6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

memory/344-46-0x000000006F291000-0x000000006F292000-memory.dmp

memory/344-47-0x000000006F290000-0x000000006F83B000-memory.dmp

memory/344-48-0x000000006F290000-0x000000006F83B000-memory.dmp

memory/344-50-0x000000006F290000-0x000000006F83B000-memory.dmp

memory/344-49-0x000000006F290000-0x000000006F83B000-memory.dmp

memory/344-51-0x000000006F290000-0x000000006F83B000-memory.dmp

memory/1148-52-0x00000000050E0000-0x0000000005144000-memory.dmp

memory/1148-73-0x0000000005F90000-0x0000000005FF2000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-30 18:57

Reported

2024-05-30 18:59

Platform

win10v2004-20240508-en

Max time kernel

132s

Max time network

101s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Cranium.exe"

Signatures

AsyncRat

rat asyncrat

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\Cranium.exe N/A

Reads user/profile data of web browsers

spyware stealer

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A pastebin.com N/A N/A
N/A pastebin.com N/A N/A
N/A 5.tcp.eu.ngrok.io N/A N/A

Enumerates physical storage devices

Delays execution with timeout.exe

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

Suspicious behavior: AddClipboardFormatListener

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Cranium.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Cranium.exe N/A

Suspicious use of SetWindowsHookEx

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

Processes

C:\Users\Admin\AppData\Local\Temp\Cranium.exe

"C:\Users\Admin\AppData\Local\Temp\Cranium.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c schtasks /delete /f /tn "Cranium"

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8095.tmp.bat""

C:\Windows\SysWOW64\schtasks.exe

schtasks /delete /f /tn "Cranium"

C:\Windows\SysWOW64\timeout.exe

timeout 3

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 pastebin.com udp
US 172.67.19.24:443 pastebin.com tcp
US 8.8.8.8:53 5.tcp.eu.ngrok.io udp
DE 18.158.58.205:17731 5.tcp.eu.ngrok.io tcp
US 8.8.8.8:53 24.19.67.172.in-addr.arpa udp
US 8.8.8.8:53 205.58.158.18.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
DE 18.158.58.205:17731 5.tcp.eu.ngrok.io tcp
DE 18.158.58.205:17731 5.tcp.eu.ngrok.io tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
DE 18.158.58.205:17731 5.tcp.eu.ngrok.io tcp
DE 18.158.58.205:17731 5.tcp.eu.ngrok.io tcp
DE 18.158.58.205:17731 5.tcp.eu.ngrok.io tcp
DE 18.158.58.205:17731 5.tcp.eu.ngrok.io tcp
DE 18.158.58.205:17731 5.tcp.eu.ngrok.io tcp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
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 8.8.8.8:53 200.197.79.204.in-addr.arpa udp

Files

memory/3344-0-0x000000007528E000-0x000000007528F000-memory.dmp

memory/3344-1-0x0000000000180000-0x0000000000192000-memory.dmp

memory/3344-2-0x0000000075280000-0x0000000075A30000-memory.dmp

memory/3344-3-0x0000000004B80000-0x0000000004BE6000-memory.dmp

memory/3344-4-0x0000000004FD0000-0x000000000506C000-memory.dmp

memory/3344-7-0x0000000006090000-0x0000000006634000-memory.dmp

memory/3344-8-0x00000000067C0000-0x0000000006836000-memory.dmp

memory/3344-9-0x0000000006740000-0x00000000067A8000-memory.dmp

memory/3344-10-0x0000000006890000-0x00000000068AE000-memory.dmp

memory/3344-11-0x0000000006A80000-0x0000000006B12000-memory.dmp

memory/3344-12-0x0000000006B20000-0x0000000006BBC000-memory.dmp

memory/3344-13-0x0000000006A00000-0x0000000006A08000-memory.dmp

memory/3344-14-0x0000000006C30000-0x0000000006C70000-memory.dmp

memory/3344-15-0x0000000006A10000-0x0000000006A1A000-memory.dmp

memory/3344-16-0x000000007528E000-0x000000007528F000-memory.dmp

memory/3344-17-0x0000000075280000-0x0000000075A30000-memory.dmp

memory/3344-18-0x0000000006C80000-0x0000000006CE2000-memory.dmp

memory/3344-19-0x0000000007150000-0x000000000715A000-memory.dmp

memory/3344-20-0x0000000006FC0000-0x0000000007024000-memory.dmp

memory/3344-21-0x0000000007090000-0x00000000070F4000-memory.dmp

memory/3344-22-0x0000000007470000-0x00000000074D4000-memory.dmp

memory/3344-26-0x0000000075280000-0x0000000075A30000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp8095.tmp.bat

MD5 49d1d4e4f39cfd539d4a88c49c22cdef
SHA1 19fc4eac6ed8282e76bdf86e82473ad6320e742a
SHA256 b8ffcda21b360422bd0fb94f762ab2456b4eee1113105203dc73e1bbbf46fd0e
SHA512 d1aa04695140d93c5574c8cd997b2d58d8ed98b150d8bc620c8b743090582e2d7d1eb36360b3ba3e3b86b4d89e50137d1d7c11892cc8b85b8c265629e48d0f48