Resubmissions

03-02-2024 11:37

240203-nrgycaaecm 10

02-02-2024 19:15

240202-xyamaaddb7 10

01-02-2024 20:32

240201-zbg4ysdgc7 10

01-02-2024 19:55

240201-ym4lnaddf5 10

General

  • Target

    file.exe

  • Size

    6.3MB

  • Sample

    240202-xyamaaddb7

  • MD5

    c67cb967230036816fd0cbbfd96959c6

  • SHA1

    d2fe988a302dce4bc0f34a1003a623f96a06b250

  • SHA256

    d2682ee0fe9e5bf429b7bea89d32cf417c3b684429dbff5e060b07e7335aaa76

  • SHA512

    2f51046e44bdfa470f676071c69da8c05d50d8f79e748748f25ac13ec53d346f1c3988148000fea3ece38623fd629d1b3dcc943006e80b7bee95da7f1f42920c

  • SSDEEP

    196608:GHqO3grg0lAc4G+JCJjsP8BXkf/hmzJzFYngA13jvHKvj4:GHzCOc4G+oB0BmdFY31zq

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

stealc

C2

http://185.172.128.79

Attributes
  • url_path

    /3886d2276f6914c4.php

rc4.plain

Extracted

Family

smokeloader

Version

2022

C2

http://trad-einmyus.com/index.php

http://tradein-myus.com/index.php

http://trade-inmyus.com/index.php

rc4.i32
rc4.i32

Extracted

Family

djvu

C2

http://habrafa.com/test1/get.php

Attributes
  • extension

    .cdcc

  • offline_id

    LBxKKiegnAy53rpqH3Pj2j46vwldiEt9kqHSuMt1

  • payload_url

    http://brusuax.com/dl/build2.exe

    http://habrafa.com/files/1/build3.exe

  • ransomnote

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rsa_pubkey.plain

Extracted

Family

redline

Botnet

Exodus

C2

93.123.39.68:1334

Targets

    • Target

      file.exe

    • Size

      6.3MB

    • MD5

      c67cb967230036816fd0cbbfd96959c6

    • SHA1

      d2fe988a302dce4bc0f34a1003a623f96a06b250

    • SHA256

      d2682ee0fe9e5bf429b7bea89d32cf417c3b684429dbff5e060b07e7335aaa76

    • SHA512

      2f51046e44bdfa470f676071c69da8c05d50d8f79e748748f25ac13ec53d346f1c3988148000fea3ece38623fd629d1b3dcc943006e80b7bee95da7f1f42920c

    • SSDEEP

      196608:GHqO3grg0lAc4G+JCJjsP8BXkf/hmzJzFYngA13jvHKvj4:GHzCOc4G+oB0BmdFY31zq

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Detect ZGRat V1

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Glupteba

      Glupteba is a modular loader written in Golang with various components.

    • Glupteba payload

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine payload

    • SectopRAT

      SectopRAT is a remote access trojan first seen in November 2019.

    • SectopRAT payload

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Stealc

      Stealc is an infostealer written in C++.

    • ZGRat

      ZGRat is remote access trojan written in C#.

    • Async RAT payload

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

    • Creates new service(s)

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Stops running service(s)

    • 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.

    • 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

    • Modifies file permissions

    • 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.

    • UPX packed file

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

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Accesses Microsoft Outlook profiles

    • 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.

    • Creates a large amount of network flows

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

    • Looks up external IP address via web service

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

    • Manipulates WinMonFS driver.

      Roottkits write to WinMonFS to hide directories/files from being detected.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Create or Modify System Process

3
T1543

Windows Service

3
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Create or Modify System Process

3
T1543

Windows Service

3
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Impair Defenses

2
T1562

Disable or Modify System Firewall

1
T1562.004

File and Directory Permissions Modification

1
T1222

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

4
T1552.001

Discovery

Query Registry

9
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

7
T1082

Network Service Discovery

1
T1046

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

4
T1005

Email Collection

1
T1114

Impact

Service Stop

1
T1489

Tasks