Malware Analysis Report

2024-09-11 09:42

Sample ID 240604-wmbvjaef4z
Target Craker Internal.exe
SHA256 7f28c4c57891ab3a441d9164e1307de587acaedb795764112390b8c17aaf812b
Tags
discordrat persistence rat rootkit stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

7f28c4c57891ab3a441d9164e1307de587acaedb795764112390b8c17aaf812b

Threat Level: Known bad

The file Craker Internal.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

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
Query Registry
T1012
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

2024-06-04 18:01

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-04 18:01

Reported

2024-06-04 18:03

Platform

win10v2004-20240508-en

Max time kernel

50s

Max time network

52s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Craker Internal.exe"

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Checks computer location settings

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

Executes dropped EXE

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2912 wrote to memory of 1140 N/A C:\Users\Admin\AppData\Local\Temp\Craker Internal.exe C:\Users\Admin\AppData\Local\Temp\RarSFX0\HwidTempSpoofer.exe
PID 2912 wrote to memory of 1140 N/A C:\Users\Admin\AppData\Local\Temp\Craker Internal.exe C:\Users\Admin\AppData\Local\Temp\RarSFX0\HwidTempSpoofer.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Craker Internal.exe

"C:\Users\Admin\AppData\Local\Temp\Craker Internal.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 gateway.discord.gg udp
US 162.159.130.234:443 gateway.discord.gg tcp
US 8.8.8.8:53 216.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 234.130.159.162.in-addr.arpa udp
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 discord.com udp
US 162.159.128.233:443 discord.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.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 162.159.128.233:443 discord.com tcp
US 8.8.8.8:53 233.128.159.162.in-addr.arpa udp
US 8.8.8.8:53 253.102.89.159.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
NL 23.62.61.115:443 www.bing.com tcp
US 8.8.8.8:53 115.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp

Files

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

MD5 a2da8356ef064960ab8dd09372627a58
SHA1 2edb364315b7f1a5ee652e015a1316c6640d2d2b
SHA256 540611034c0489b1b4e2822b692bff7167369ceaea4bfd334aeaa33e0ae6ae6e
SHA512 9e4770e0d3a9404ea78d532b08e4b70c1be77fcd5797601fb17c18e45b991c10407c595a52ca361affd6bffeb476cdbcba184dd07142f10d74f23c4f357b6ace

memory/1140-12-0x00007FFFBA3E0000-0x00007FFFBA402000-memory.dmp

memory/1140-13-0x000001C4396C0000-0x000001C4396D8000-memory.dmp

memory/1140-14-0x000001C453D00000-0x000001C453EC2000-memory.dmp

memory/1140-15-0x000001C454640000-0x000001C454B68000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-04 18:01

Reported

2024-06-04 18:04

Platform

win7-20240220-en

Max time kernel

120s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Craker Internal.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\HwidTempSpoofer.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Craker Internal.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 1740 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\Craker Internal.exe C:\Users\Admin\AppData\Local\Temp\RarSFX0\HwidTempSpoofer.exe
PID 1740 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\Craker Internal.exe C:\Users\Admin\AppData\Local\Temp\RarSFX0\HwidTempSpoofer.exe
PID 1740 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\Craker Internal.exe C:\Users\Admin\AppData\Local\Temp\RarSFX0\HwidTempSpoofer.exe
PID 2524 wrote to memory of 2760 N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\HwidTempSpoofer.exe C:\Windows\system32\WerFault.exe
PID 2524 wrote to memory of 2760 N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\HwidTempSpoofer.exe C:\Windows\system32\WerFault.exe
PID 2524 wrote to memory of 2760 N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\HwidTempSpoofer.exe C:\Windows\system32\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Craker Internal.exe

"C:\Users\Admin\AppData\Local\Temp\Craker Internal.exe"

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

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

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2524 -s 596

C:\Windows\explorer.exe

"C:\Windows\explorer.exe"

Network

N/A

Files

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

MD5 a2da8356ef064960ab8dd09372627a58
SHA1 2edb364315b7f1a5ee652e015a1316c6640d2d2b
SHA256 540611034c0489b1b4e2822b692bff7167369ceaea4bfd334aeaa33e0ae6ae6e
SHA512 9e4770e0d3a9404ea78d532b08e4b70c1be77fcd5797601fb17c18e45b991c10407c595a52ca361affd6bffeb476cdbcba184dd07142f10d74f23c4f357b6ace

memory/2524-8-0x000007FEF5443000-0x000007FEF5444000-memory.dmp

memory/2524-9-0x000000013FB00000-0x000000013FB18000-memory.dmp

memory/2524-14-0x000007FEF5440000-0x000007FEF5E2C000-memory.dmp

memory/2524-16-0x000007FEF5443000-0x000007FEF5444000-memory.dmp