General

  • Target

    04c77a7c834d75d2d9dbc52cc2e25ce18fc51a886db67e85b27900c14116ce85

  • Size

    318KB

  • Sample

    220927-kxn23aebbp

  • MD5

    74bd59754c2af8d58552862737833cdd

  • SHA1

    8876a9ea30c458dde86d04f039a0b7a3ea7d2d01

  • SHA256

    04c77a7c834d75d2d9dbc52cc2e25ce18fc51a886db67e85b27900c14116ce85

  • SHA512

    52f3d498e260449cf7be1795dccfcbfbb7dd7b7d75e725dec61c7dd7cc2b9d8580269972aa50625b12ec36387895ea4dd5c7aef0669b867f2b9417d1c8fdeb4e

  • SSDEEP

    6144:4fR5BDeY3B5R86DJytEN0QAQTnigabwVf:4fnBDeY/R1Uki

Malware Config

Extracted

Family

djvu

C2

http://winnlinne.com/lancer/get.php

Attributes
  • extension

    .ofww

  • offline_id

    xkNzhkB1wvgoDI7Uo0HPNLY3qCuwoFpP7nlhlut1

  • payload_url

    http://rgyui.top/dl/build2.exe

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

  • ransomnote

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rsa_pubkey.plain

Extracted

Family

vidar

Version

54.7

Botnet

517

C2

https://t.me/trampapanam

https://nerdculture.de/@yoxhyp

Attributes
  • profile_id

    517

Extracted

Family

redline

Botnet

11

C2

77.73.134.27:7161

Attributes
  • auth_value

    e6aadafed1fda7723d7655a5894828d2

Extracted

Family

redline

Botnet

install

C2

212.8.244.233:43690

Attributes
  • auth_value

    cbce7277fef2185d93b8332df3940ad5

Targets

    • Target

      04c77a7c834d75d2d9dbc52cc2e25ce18fc51a886db67e85b27900c14116ce85

    • Size

      318KB

    • MD5

      74bd59754c2af8d58552862737833cdd

    • SHA1

      8876a9ea30c458dde86d04f039a0b7a3ea7d2d01

    • SHA256

      04c77a7c834d75d2d9dbc52cc2e25ce18fc51a886db67e85b27900c14116ce85

    • SHA512

      52f3d498e260449cf7be1795dccfcbfbb7dd7b7d75e725dec61c7dd7cc2b9d8580269972aa50625b12ec36387895ea4dd5c7aef0669b867f2b9417d1c8fdeb4e

    • SSDEEP

      6144:4fR5BDeY3B5R86DJytEN0QAQTnigabwVf:4fnBDeY/R1Uki

    • Detected Djvu ransomware

    • Detects Smokeloader packer

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • RedLine

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

    • RedLine payload

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of web browsers

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

    • Accesses 2FA software files, possible credential harvesting

    • 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.

    • 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 v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

4
T1012

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Command and Control

Web Service

1
T1102

Tasks