Malware Analysis Report

2024-09-11 08:57

Sample ID 240619-xl3gjaxbnf
Target hehe's external.exe
SHA256 d71e071decfbf58e254b4c45a18c71b30446ca83d7acff324761569e57027b24
Tags
discordrat execution 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: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

d71e071decfbf58e254b4c45a18c71b30446ca83d7acff324761569e57027b24

Threat Level: Known bad

The file hehe's external.exe was found to be: Known bad.

Malicious Activity Summary

discordrat execution persistence rat rootkit stealer

Discordrat family

Discord RAT

Command and Scripting Interpreter: PowerShell

Legitimate hosting services abused for malware hosting/C2

Drops file in Windows directory

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Command and Scripting Interpreter
T1059
PowerShell
T1059.001
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
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

2024-06-19 18:57

Signatures

Discordrat family

discordrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-19 18:57

Reported

2024-06-19 19:00

Platform

win10-20240404-en

Max time kernel

133s

Max time network

137s

Command Line

"C:\Users\Admin\AppData\Local\Temp\hehe's external.exe"

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.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

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\rescache\_merged\4272278488\2581520266.pri C:\Windows\SystemApps\Microsoft.Windows.SecHealthUI_cw5n1h2txyewy\SecHealthUI.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\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\hehe's external.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SystemApps\Microsoft.Windows.SecHealthUI_cw5n1h2txyewy\SecHealthUI.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4656 wrote to memory of 4704 N/A C:\Users\Admin\AppData\Local\Temp\hehe's external.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4656 wrote to memory of 4704 N/A C:\Users\Admin\AppData\Local\Temp\hehe's external.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Users\Admin\AppData\Local\Temp\hehe's external.exe

"C:\Users\Admin\AppData\Local\Temp\hehe's external.exe"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" -Command Add-MpPreference -ExclusionPath "C:\"

C:\Windows\SystemApps\Microsoft.Windows.SecHealthUI_cw5n1h2txyewy\SecHealthUI.exe

"C:\Windows\SystemApps\Microsoft.Windows.SecHealthUI_cw5n1h2txyewy\SecHealthUI.exe" -ServerName:SecHealthUI.AppXep4x2tbtjws1v9qqs0rmb3hxykvkpqtn.mca

Network

Country Destination Domain Proto
US 8.8.8.8:53 gateway.discord.gg udp
US 162.159.136.234:443 gateway.discord.gg tcp
US 8.8.8.8:53 discord.com udp
US 162.159.135.232:443 discord.com tcp
US 8.8.8.8:53 234.136.159.162.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 162.159.135.232:443 discord.com tcp
US 8.8.8.8:53 232.135.159.162.in-addr.arpa udp
US 8.8.8.8:53 253.102.89.159.in-addr.arpa udp
US 162.159.135.232:443 discord.com tcp
US 8.8.8.8:53 157.252.19.2.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 138.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 watson.telemetry.microsoft.com udp
US 20.189.173.22:443 watson.telemetry.microsoft.com tcp
US 8.8.8.8:53 22.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 105.193.132.51.in-addr.arpa udp

Files

memory/4656-0-0x000001F7351C0000-0x000001F7351D8000-memory.dmp

memory/4656-1-0x00007FFC34933000-0x00007FFC34934000-memory.dmp

memory/4656-2-0x000001F74F8C0000-0x000001F74FA82000-memory.dmp

memory/4656-3-0x00007FFC34930000-0x00007FFC3531C000-memory.dmp

memory/4656-4-0x000001F7500C0000-0x000001F7505E6000-memory.dmp

memory/4656-5-0x00007FFC34933000-0x00007FFC34934000-memory.dmp

memory/4656-6-0x00007FFC34930000-0x00007FFC3531C000-memory.dmp

memory/4704-11-0x00007FFC34930000-0x00007FFC3531C000-memory.dmp

memory/4704-12-0x000002466BE30000-0x000002466BE52000-memory.dmp

memory/4704-13-0x00007FFC34930000-0x00007FFC3531C000-memory.dmp

memory/4704-16-0x000002466BFE0000-0x000002466C056000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hrmmsl3v.dcq.ps1

MD5 c4ca4238a0b923820dcc509a6f75849b
SHA1 356a192b7913b04c54574d18c28d46e6395428ab
SHA256 6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b
SHA512 4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

memory/4704-40-0x00007FFC34930000-0x00007FFC3531C000-memory.dmp

memory/4704-41-0x00007FFC34930000-0x00007FFC3531C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-19 18:57

Reported

2024-06-19 19:00

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\hehe's external.exe"

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\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\hehe's external.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3672 wrote to memory of 4928 N/A C:\Users\Admin\AppData\Local\Temp\hehe's external.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3672 wrote to memory of 4928 N/A C:\Users\Admin\AppData\Local\Temp\hehe's external.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Users\Admin\AppData\Local\Temp\hehe's external.exe

"C:\Users\Admin\AppData\Local\Temp\hehe's external.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=2524 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:8

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" -Command Add-MpPreference -ExclusionPath "C:\"

Network

Country Destination Domain Proto
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 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 discord.com udp
US 162.159.135.232:443 discord.com tcp
US 8.8.8.8:53 geolocation-db.com udp
DE 159.89.102.253:443 geolocation-db.com tcp
US 8.8.8.8:53 138.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 232.135.159.162.in-addr.arpa udp
US 162.159.135.232:443 discord.com tcp
US 8.8.8.8:53 253.102.89.159.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
GB 96.16.110.114:80 tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 13.107.253.64:443 tcp
GB 172.217.169.74:443 tcp
US 8.8.8.8:53 76.234.34.23.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 162.159.135.232:443 discord.com tcp
US 8.8.8.8:53 175.117.168.52.in-addr.arpa udp

Files

memory/3672-0-0x00007FFC3DC93000-0x00007FFC3DC95000-memory.dmp

memory/3672-1-0x000001BF513C0000-0x000001BF513D8000-memory.dmp

memory/3672-2-0x000001BF6B990000-0x000001BF6BB52000-memory.dmp

memory/3672-3-0x00007FFC3DC90000-0x00007FFC3E751000-memory.dmp

memory/3672-4-0x000001BF6C1E0000-0x000001BF6C708000-memory.dmp

memory/3672-5-0x00007FFC3DC93000-0x00007FFC3DC95000-memory.dmp

memory/3672-6-0x00007FFC3DC90000-0x00007FFC3E751000-memory.dmp

memory/4928-7-0x00007FFC3DC90000-0x00007FFC3E751000-memory.dmp

memory/4928-8-0x00007FFC3DC90000-0x00007FFC3E751000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fuycsiwa.enq.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4928-18-0x000001B649A80000-0x000001B649AA2000-memory.dmp

memory/4928-19-0x00007FFC3DC90000-0x00007FFC3E751000-memory.dmp

memory/4928-20-0x00007FFC3DC90000-0x00007FFC3E751000-memory.dmp

memory/4928-23-0x00007FFC3DC90000-0x00007FFC3E751000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-06-19 18:57

Reported

2024-06-19 19:00

Platform

win11-20240611-en

Max time kernel

91s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\hehe's external.exe"

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.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
N/A discord.com N/A N/A
N/A discord.com N/A N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\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\hehe's external.exe N/A
Token: 33 N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4288 wrote to memory of 2020 N/A C:\Users\Admin\AppData\Local\Temp\hehe's external.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4288 wrote to memory of 2020 N/A C:\Users\Admin\AppData\Local\Temp\hehe's external.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Users\Admin\AppData\Local\Temp\hehe's external.exe

"C:\Users\Admin\AppData\Local\Temp\hehe's external.exe"

C:\Windows\system32\AUDIODG.EXE

C:\Windows\system32\AUDIODG.EXE 0x00000000000004F8 0x0000000000000500

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" -Command Add-MpPreference -ExclusionPath "C:\"

Network

Country Destination Domain Proto
US 8.8.8.8:53 gateway.discord.gg udp
US 162.159.130.234:443 gateway.discord.gg tcp
US 162.159.138.232:443 discord.com tcp
DE 159.89.102.253:443 geolocation-db.com tcp
US 162.159.138.232:443 discord.com tcp
US 162.159.138.232:443 discord.com tcp
US 162.159.138.232:443 discord.com tcp
US 162.159.138.232:443 discord.com tcp
US 162.159.138.232:443 discord.com tcp
NL 52.111.243.29:443 tcp

Files

memory/4288-1-0x00007FFF45B73000-0x00007FFF45B75000-memory.dmp

memory/4288-0-0x0000026160890000-0x00000261608A8000-memory.dmp

memory/4288-2-0x000002617AEA0000-0x000002617B062000-memory.dmp

memory/4288-3-0x00007FFF45B70000-0x00007FFF46632000-memory.dmp

memory/4288-4-0x000002617C170000-0x000002617C698000-memory.dmp

memory/4288-5-0x00007FFF45B70000-0x00007FFF46632000-memory.dmp

memory/4288-6-0x000002617BCF0000-0x000002617BD9A000-memory.dmp

memory/4288-7-0x00007FFF45B70000-0x00007FFF46632000-memory.dmp

memory/4288-11-0x00007FFF45B70000-0x00007FFF46632000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fux45edj.4ot.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2020-20-0x000001E1ABF70000-0x000001E1ABF92000-memory.dmp