General

  • Target

    c6308c0eaf4b9f477f15087eeee49cfbaea459d9a6ceed91e40abdbf51d3cde4

  • Size

    320KB

  • Sample

    220927-mbk5dsdca4

  • MD5

    93a8e19924c5d263854d5aa10eb0148b

  • SHA1

    ed1e174f7b12ba5e6bb1f94abd99785b8986662b

  • SHA256

    c6308c0eaf4b9f477f15087eeee49cfbaea459d9a6ceed91e40abdbf51d3cde4

  • SHA512

    56078768a9252f6578beb9e101e452334f4323a76a7a2d1798816d59bbf54c0cb721d517d785bb4600067c0a8088d4bc04f4c80c435bb68f1b5d97f928b002a8

  • SSDEEP

    3072:UhXPzaKeN20weIQbG25+KTymGRov11bkOYz0KvLpM/h3BsxkgaBChU/pZa9uD6Vm:UFWKernbBTym31bjYz0udnigabwVf

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

inslab26

C2

185.182.194.25:8251

Attributes
  • auth_value

    7c9cbd0e489a3c7fd31006406cb96f5b

Extracted

Family

redline

Botnet

11

C2

77.73.134.27:7161

Attributes
  • auth_value

    e6aadafed1fda7723d7655a5894828d2

Targets

    • Target

      c6308c0eaf4b9f477f15087eeee49cfbaea459d9a6ceed91e40abdbf51d3cde4

    • Size

      320KB

    • MD5

      93a8e19924c5d263854d5aa10eb0148b

    • SHA1

      ed1e174f7b12ba5e6bb1f94abd99785b8986662b

    • SHA256

      c6308c0eaf4b9f477f15087eeee49cfbaea459d9a6ceed91e40abdbf51d3cde4

    • SHA512

      56078768a9252f6578beb9e101e452334f4323a76a7a2d1798816d59bbf54c0cb721d517d785bb4600067c0a8088d4bc04f4c80c435bb68f1b5d97f928b002a8

    • SSDEEP

      3072:UhXPzaKeN20weIQbG25+KTymGRov11bkOYz0KvLpM/h3BsxkgaBChU/pZa9uD6Vm:UFWKernbBTym31bjYz0udnigabwVf

    • 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

    • Deletes itself

    • 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.

    • 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

3
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks