General

  • Target

    b119f003f9fca28111b386401a9da65eb1b6b36f6824b2145188aed2bacada1c

  • Size

    303KB

  • Sample

    240322-j9lxsscd3y

  • MD5

    91971721b53c791bd1e4bef7ae44c4fc

  • SHA1

    ffd271ebad1b0afae61b36a62d63352d38c703bd

  • SHA256

    b119f003f9fca28111b386401a9da65eb1b6b36f6824b2145188aed2bacada1c

  • SHA512

    25675855e0f4bb9727a1b7ffe63488f3a3a8bc85120bfd8be3187913dfd03d0db13f9f25fc79d06d3ee871b9e92b979df3a2a11b8e52812fcec858813d81a0ad

  • SSDEEP

    3072:oQciUCwAoPh+BYYCEXWHbbk9B/armuE/1K8nD2ey7AOD65xL4dK:kOIhmhbL/uER2ey752L44

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

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://sajdfue.com/test1/get.php

Attributes
  • extension

    .vook

  • offline_id

    1eSPzWRaNslCgtjBZfL5pzvovoiaVI4IZSnvAwt1

  • payload_url

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

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

  • ransomnote

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rsa_pubkey.plain

Extracted

Family

lumma

C2

https://resergvearyinitiani.shop/api

https://associationokeo.shop/api

Targets

    • Target

      b119f003f9fca28111b386401a9da65eb1b6b36f6824b2145188aed2bacada1c

    • Size

      303KB

    • MD5

      91971721b53c791bd1e4bef7ae44c4fc

    • SHA1

      ffd271ebad1b0afae61b36a62d63352d38c703bd

    • SHA256

      b119f003f9fca28111b386401a9da65eb1b6b36f6824b2145188aed2bacada1c

    • SHA512

      25675855e0f4bb9727a1b7ffe63488f3a3a8bc85120bfd8be3187913dfd03d0db13f9f25fc79d06d3ee871b9e92b979df3a2a11b8e52812fcec858813d81a0ad

    • SSDEEP

      3072:oQciUCwAoPh+BYYCEXWHbbk9B/armuE/1K8nD2ey7AOD65xL4dK:kOIhmhbL/uER2ey752L44

    • DcRat

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

    • 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

    • Lumma Stealer

      An infostealer written in C++ first seen in August 2022.

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Downloads MZ/PE file

    • Modifies Installed Components in the registry

    • Modifies Windows Firewall

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • 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 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.

    • Adds Run key to start application

    • Enumerates connected drives

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

    • 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.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

2
T1112

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

File and Directory Permissions Modification

1
T1222

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

4
T1012

System Information Discovery

4
T1082

Peripheral Device Discovery

2
T1120

Collection

Data from Local System

2
T1005

Command and Control

Web Service

1
T1102

Tasks