Malware Analysis Report

2024-09-11 09:07

Sample ID 240625-vpd71avfjk
Target solarabootstraper.exe
SHA256 d0452f63e207ead4ba0828fba9cd46d54c08906ac3f35f1c0b27dda2d60fbc83
Tags
discordrat persistence rat rootkit 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

d0452f63e207ead4ba0828fba9cd46d54c08906ac3f35f1c0b27dda2d60fbc83

Threat Level: Known bad

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

Malicious Activity Summary

discordrat persistence rat rootkit stealer

Discord RAT

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

Legitimate hosting services abused for malware hosting/C2

Enumerates physical storage devices

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
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Query Registry
T1012
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

2024-06-25 17:09

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-25 17:09

Reported

2024-06-25 17:12

Platform

win7-20240221-en

Max time kernel

119s

Max time network

120s

Command Line

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

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\test.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\solarabootstraper.exe N/A
N/A N/A C:\Windows\system32\WerFault.exe N/A
N/A N/A C:\Windows\system32\WerFault.exe N/A
N/A N/A C:\Windows\system32\WerFault.exe N/A
N/A N/A C:\Windows\system32\WerFault.exe N/A
N/A N/A C:\Windows\system32\WerFault.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2336 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\solarabootstraper.exe C:\Users\Admin\AppData\Local\Temp\RarSFX0\test.exe
PID 2336 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\solarabootstraper.exe C:\Users\Admin\AppData\Local\Temp\RarSFX0\test.exe
PID 2336 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\solarabootstraper.exe C:\Users\Admin\AppData\Local\Temp\RarSFX0\test.exe
PID 2736 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\test.exe C:\Windows\system32\WerFault.exe
PID 2736 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\test.exe C:\Windows\system32\WerFault.exe
PID 2736 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\test.exe C:\Windows\system32\WerFault.exe

Processes

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

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

C:\Users\Admin\AppData\Local\Temp\RarSFX0\test.exe

"C:\Users\Admin\AppData\Local\Temp\RarSFX0\test.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2736 -s 596

Network

N/A

Files

memory/2336-4-0x0000000000270000-0x0000000000280000-memory.dmp

\Users\Admin\AppData\Local\Temp\RarSFX0\test.exe

MD5 cd0398fb5a04ce43be2b1183e7dfad06
SHA1 e1e9ac1f1f2533f3bfec802cae2cbeeeac65c181
SHA256 c4fb94399b109d19585a03233be7663000aae8c7c7f8661ce744c59bfa8ced08
SHA512 50bfd2614078082fd83e43e61a36b086eae0fec2399fae5655c6442a474ffb7c25cabe43b4c484c85acc4fac72c2f2613dc00e85045242dfcdd91093519699bc

memory/2736-11-0x000007FEF5253000-0x000007FEF5254000-memory.dmp

memory/2736-12-0x000000013F8B0000-0x000000013F8C8000-memory.dmp

memory/2736-17-0x000007FEF5250000-0x000007FEF5C3C000-memory.dmp

memory/2736-19-0x000007FEF5253000-0x000007FEF5254000-memory.dmp

memory/2736-20-0x000007FEF5250000-0x000007FEF5C3C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-25 17:09

Reported

2024-06-25 17:10

Platform

win10v2004-20240611-en

Max time kernel

32s

Max time network

34s

Command Line

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

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\solarabootstraper.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\test.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

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\test.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\test.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1428 wrote to memory of 4812 N/A C:\Users\Admin\AppData\Local\Temp\solarabootstraper.exe C:\Users\Admin\AppData\Local\Temp\RarSFX0\test.exe
PID 1428 wrote to memory of 4812 N/A C:\Users\Admin\AppData\Local\Temp\solarabootstraper.exe C:\Users\Admin\AppData\Local\Temp\RarSFX0\test.exe

Processes

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

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

C:\Users\Admin\AppData\Local\Temp\RarSFX0\test.exe

"C:\Users\Admin\AppData\Local\Temp\RarSFX0\test.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
BE 23.41.178.98:443 www.bing.com tcp
US 8.8.8.8:53 98.178.41.23.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.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 discord.com udp
US 162.159.137.232:443 discord.com tcp
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
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
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
US 8.8.8.8:53 3.166.122.92.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\RarSFX0\test.exe

MD5 cd0398fb5a04ce43be2b1183e7dfad06
SHA1 e1e9ac1f1f2533f3bfec802cae2cbeeeac65c181
SHA256 c4fb94399b109d19585a03233be7663000aae8c7c7f8661ce744c59bfa8ced08
SHA512 50bfd2614078082fd83e43e61a36b086eae0fec2399fae5655c6442a474ffb7c25cabe43b4c484c85acc4fac72c2f2613dc00e85045242dfcdd91093519699bc

memory/4812-14-0x0000023011CE0000-0x0000023011CF8000-memory.dmp

memory/4812-15-0x00007FFAADCB3000-0x00007FFAADCB5000-memory.dmp

memory/4812-16-0x000002302C280000-0x000002302C442000-memory.dmp

memory/4812-17-0x00007FFAADCB0000-0x00007FFAAE771000-memory.dmp

memory/4812-18-0x000002302D330000-0x000002302D858000-memory.dmp

memory/4812-19-0x00007FFAADCB3000-0x00007FFAADCB5000-memory.dmp

memory/4812-20-0x00007FFAADCB0000-0x00007FFAAE771000-memory.dmp