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General

  • Target

    random.exe3

  • Size

    938KB

  • Sample

    250322-t1813s1jw4

  • MD5

    bcefbd57340b3f8c39699195c2946d69

  • SHA1

    73eb2f2c99d6a7141fc577d9375ae3992ac58b4a

  • SHA256

    8339734ef64625aea2605628510e071dccbb57941c2dd068c8b34fc859c4f2ec

  • SHA512

    a9cdc53ff3b7b5c6913353a70a268e88a61dd1a7b4ad9f2cf5657b28ff5b612cf8c20275e070c54a31acb83ea1608d273c2217e56415e1a8c0626c6b82681b9f

  • SSDEEP

    24576:9qDEvCTbMWu7rQYlBQcBiT6rprG8a0Ju:9TvC/MTQYxsWR7a0J

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://176.113.115.7/mine/random.exe

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://196.251.91.42/up/uploads/encryption02.jpg

exe.dropper

http://196.251.91.42/up/uploads/encryption02.jpg

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://176.113.115.7/mine/random.exe

Extracted

Language
ps1
Deobfuscated
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

Extracted

Family

skuld

C2

https://discordapp.com/api/webhooks/1349647136895012916/qSys_fpsL_y7usKH_AyrFupSjzSsVfg2t895g2HV8Yz72asrwCIsHaqqhPtDFjz8g8_E

Extracted

Family

xworm

Version

5.0

C2

httpss.myvnc.com:1907

Mutex

xWIArEKzuXpfRVkJ

Attributes
  • install_file

    USB.exe

aes.plain

Extracted

Family

quasar

Version

1.3.0.0

Botnet

TELEGRAM

C2

212.56.35.232:101

Mutex

QSR_MUTEX_LoEArEgGuZRG2bQs0E

Attributes
  • encryption_key

    yMvSAv7B2dURg67QYU5x

  • install_name

    svchost.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    svchosta

  • subdirectory

    media

Extracted

Family

vidar

Version

13.2

Botnet

80621af4947f6f7800865a5c80d8f329

C2

https://t.me/g_etcontent

https://steamcommunity.com/profiles/76561199832267488

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:135.0) Firefox/135.0

Targets

    • Target

      random.exe3

    • Size

      938KB

    • MD5

      bcefbd57340b3f8c39699195c2946d69

    • SHA1

      73eb2f2c99d6a7141fc577d9375ae3992ac58b4a

    • SHA256

      8339734ef64625aea2605628510e071dccbb57941c2dd068c8b34fc859c4f2ec

    • SHA512

      a9cdc53ff3b7b5c6913353a70a268e88a61dd1a7b4ad9f2cf5657b28ff5b612cf8c20275e070c54a31acb83ea1608d273c2217e56415e1a8c0626c6b82681b9f

    • SSDEEP

      24576:9qDEvCTbMWu7rQYlBQcBiT6rprG8a0Ju:9TvC/MTQYxsWR7a0J

    • Amadey

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

    • Amadey family

    • Detect Vidar Stealer

    • Detect Xworm Payload

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Skuld family

    • Skuld stealer

      An info stealer written in Go lang.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Vidar family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

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

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • 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

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • 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.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • 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.

    • Checks whether UAC is enabled

    • Legitimate hosting services abused for malware hosting/C2

    • 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.

    • Drops file in System32 directory

    • Enumerates processes with tasklist

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v15

Tasks