Malware Analysis Report

2024-11-16 13:02

Sample ID 240906-re2c1a1dlf
Target release.zip
SHA256 c13a0cd7c2c2fd577703bff026b72ed81b51266afa047328c8ff1c4a4d965c97
Tags
discordrat persistence rat rootkit stealer discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral6

Detonation Overview

Command Line

Signatures

Processes

Network

Files

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: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral5

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

c13a0cd7c2c2fd577703bff026b72ed81b51266afa047328c8ff1c4a4d965c97

Threat Level: Known bad

The file release.zip was found to be: Known bad.

Malicious Activity Summary

discordrat persistence rat rootkit stealer discovery

Discordrat family

Discord RAT

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-06 14:07

Signatures

Discordrat family

discordrat

Unsigned PE

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

Analysis: behavioral6

Detonation Overview

Submitted

2024-09-06 14:07

Reported

2024-09-06 14:17

Platform

win10v2004-20240802-en

Max time kernel

595s

Max time network

600s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\dnlib.dll,#1

Signatures

N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\dnlib.dll,#1

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 --field-trial-handle=4276,i,13995403245988825027,7033610968827661507,262144 --variations-seed-version --mojo-platform-channel-handle=1316 /prefetch:8

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 --field-trial-handle=3852,i,13995403245988825027,7033610968827661507,262144 --variations-seed-version --mojo-platform-channel-handle=5068 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 1.202.248.87.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 44.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 26.173.189.20.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-06 14:07

Reported

2024-09-06 14:17

Platform

win7-20240903-en

Max time kernel

357s

Max time network

358s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Release\Discord rat.exe"

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Processes

C:\Users\Admin\AppData\Local\Temp\Release\Discord rat.exe

"C:\Users\Admin\AppData\Local\Temp\Release\Discord rat.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 316 -s 596

C:\Windows\explorer.exe

"C:\Windows\explorer.exe"

Network

N/A

Files

memory/316-0-0x000007FEF5F83000-0x000007FEF5F84000-memory.dmp

memory/316-1-0x000000013F040000-0x000000013F058000-memory.dmp

memory/316-2-0x000007FEF5F80000-0x000007FEF696C000-memory.dmp

memory/316-3-0x000007FEF5F80000-0x000007FEF696C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-06 14:07

Reported

2024-09-06 14:17

Platform

win10v2004-20240802-en

Max time kernel

442s

Max time network

444s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Release\Discord rat.exe"

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Suspicious use of AdjustPrivilegeToken

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

Processes

C:\Users\Admin\AppData\Local\Temp\Release\Discord rat.exe

"C:\Users\Admin\AppData\Local\Temp\Release\Discord rat.exe"

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 8.8.8.8:53 234.130.159.162.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 107.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 123.10.44.20.in-addr.arpa udp

Files

memory/3976-1-0x000001EFFBB10000-0x000001EFFBB28000-memory.dmp

memory/3976-0-0x00007FFD00303000-0x00007FFD00305000-memory.dmp

memory/3976-2-0x000001EFFE170000-0x000001EFFE332000-memory.dmp

memory/3976-3-0x00007FFD00300000-0x00007FFD00DC1000-memory.dmp

memory/3976-4-0x000001EFFEAB0000-0x000001EFFEFD8000-memory.dmp

memory/3976-5-0x00007FFD00300000-0x00007FFD00DC1000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-09-06 14:07

Reported

2024-09-06 14:17

Platform

win7-20240903-en

Max time kernel

361s

Max time network

362s

Command Line

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

Signatures

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\builder.exe N/A

Suspicious use of FindShellTrayWindow

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

Processes

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

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

Network

N/A

Files

memory/3068-0-0x000000007429E000-0x000000007429F000-memory.dmp

memory/3068-1-0x0000000001320000-0x0000000001328000-memory.dmp

memory/3068-2-0x0000000074290000-0x000000007497E000-memory.dmp

memory/3068-3-0x0000000074290000-0x000000007497E000-memory.dmp

memory/3068-4-0x0000000008050000-0x0000000008172000-memory.dmp

memory/3068-6-0x0000000074290000-0x000000007497E000-memory.dmp

Analysis: behavioral4

Detonation Overview

Submitted

2024-09-06 14:07

Reported

2024-09-06 14:07

Platform

win10v2004-20240802-en

Max time kernel

33s

Max time network

34s

Command Line

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

Signatures

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\builder.exe N/A

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp

Files

memory/216-0-0x000000007518E000-0x000000007518F000-memory.dmp

memory/216-1-0x0000000000D40000-0x0000000000D48000-memory.dmp

memory/216-2-0x0000000005D50000-0x00000000062F4000-memory.dmp

memory/216-3-0x00000000057A0000-0x0000000005832000-memory.dmp

memory/216-4-0x0000000075180000-0x0000000075930000-memory.dmp

memory/216-5-0x0000000005740000-0x000000000574A000-memory.dmp

memory/216-6-0x000000007518E000-0x000000007518F000-memory.dmp

memory/216-7-0x0000000075180000-0x0000000075930000-memory.dmp

Analysis: behavioral5

Detonation Overview

Submitted

2024-09-06 14:07

Reported

2024-09-06 14:17

Platform

win7-20240903-en

Max time kernel

359s

Max time network

360s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\dnlib.dll,#1

Signatures

N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\dnlib.dll,#1

Network

N/A

Files

N/A