Malware Analysis Report

2024-09-11 09:18

Sample ID 240616-3y297aydnl
Target A_protected.exe
SHA256 5b9c89db8105bb7b2c9e54a61853ecb427b3616985f2906081436864d1f4c2f2
Tags
themida discordrat evasion persistence rat rootkit stealer trojan
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

5b9c89db8105bb7b2c9e54a61853ecb427b3616985f2906081436864d1f4c2f2

Threat Level: Known bad

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

Malicious Activity Summary

themida discordrat evasion persistence rat rootkit stealer trojan

Discord RAT

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Themida packer

Checks BIOS information in registry

Legitimate hosting services abused for malware hosting/C2

Checks whether UAC is enabled

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Virtualization/Sandbox Evasion
T1497
Credential Access
TA0006
Discovery
TA0007
Query Registry
T1012
Virtualization/Sandbox Evasion
T1497
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Web Service
T1102
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-16 23:56

Signatures

Themida packer

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-16 23:56

Reported

2024-06-16 23:59

Platform

win7-20240611-en

Max time kernel

142s

Max time network

127s

Command Line

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

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\A_protected.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\A_protected.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\A_protected.exe N/A

Themida packer

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

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\A_protected.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2256 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\A_protected.exe C:\Windows\system32\WerFault.exe
PID 2256 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\A_protected.exe C:\Windows\system32\WerFault.exe
PID 2256 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\A_protected.exe C:\Windows\system32\WerFault.exe

Processes

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

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

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2256 -s 664

Network

N/A

Files

memory/2256-0-0x0000000140000000-0x0000000140CB2000-memory.dmp

memory/2256-1-0x000007FEFDB93000-0x000007FEFDB94000-memory.dmp

memory/2256-2-0x000007FEFDB80000-0x000007FEFDBEC000-memory.dmp

memory/2256-3-0x000007FEFDB80000-0x000007FEFDBEC000-memory.dmp

memory/2256-4-0x000007FEFDB80000-0x000007FEFDBEC000-memory.dmp

memory/2256-7-0x0000000140000000-0x0000000140CB2000-memory.dmp

memory/2256-8-0x000007FEFDB93000-0x000007FEFDB94000-memory.dmp

memory/2256-10-0x000007FEFDB80000-0x000007FEFDBEC000-memory.dmp

memory/2256-11-0x0000000140000000-0x0000000140CB2000-memory.dmp

memory/2256-12-0x0000000140000000-0x0000000140CB2000-memory.dmp

memory/2256-13-0x000007FEFDB80000-0x000007FEFDBEC000-memory.dmp

memory/2256-16-0x000007FEFDB80000-0x000007FEFDBEC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-16 23:56

Reported

2024-06-16 23:57

Platform

win10v2004-20240226-en

Max time kernel

49s

Max time network

52s

Command Line

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

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\A_protected.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\A_protected.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\A_protected.exe N/A

Themida packer

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

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\A_protected.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A discord.com N/A N/A
N/A discord.com N/A N/A
N/A discord.com N/A N/A
N/A discord.com N/A N/A
N/A discord.com N/A N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

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

Suspicious use of AdjustPrivilegeToken

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

Processes

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

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

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4076 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 gateway.discord.gg udp
US 162.159.135.234:443 gateway.discord.gg tcp
US 8.8.8.8:53 234.135.159.162.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 discord.com udp
US 162.159.137.232:443 discord.com tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 geolocation-db.com udp
DE 159.89.102.253:443 geolocation-db.com tcp
US 8.8.8.8:53 232.137.159.162.in-addr.arpa udp
US 162.159.137.232:443 discord.com tcp
US 8.8.8.8:53 253.102.89.159.in-addr.arpa udp
GB 23.44.234.16:80 tcp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 162.159.137.232:443 discord.com tcp
US 162.159.137.232:443 discord.com tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 13.107.253.64:443 tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 159.113.53.23.in-addr.arpa udp

Files

memory/4748-0-0x0000000140000000-0x0000000140CB2000-memory.dmp

memory/4748-1-0x00007FFE8BBAB000-0x00007FFE8BBAC000-memory.dmp

memory/4748-2-0x00007FFE8BB90000-0x00007FFE8BC4E000-memory.dmp

memory/4748-4-0x0000000140000000-0x0000000140CB2000-memory.dmp

memory/4748-5-0x0000000140000000-0x0000000140CB2000-memory.dmp

memory/4748-6-0x0000000002BF0000-0x0000000002DB2000-memory.dmp

memory/4748-7-0x0000000021580000-0x0000000021AA8000-memory.dmp

memory/4748-9-0x0000000140000000-0x0000000140CB2000-memory.dmp

memory/4748-11-0x00007FFE8BB90000-0x00007FFE8BC4E000-memory.dmp