General

  • Target

    file.exe

  • Size

    195KB

  • Sample

    220924-x13e3sbgh4

  • MD5

    8efcb80387d942d8b95c6c9e2f7362f5

  • SHA1

    83c6a73d216d33b566bcb76557d52362664044bd

  • SHA256

    b4f68f3c19cf2298cdd08aa03a7b1be0242f351ec186c8189c22c19a66bf6def

  • SHA512

    19b407ba6be0295a56ff4a8502e416ded1fd4767566dba14019fbe07d65347b833d99575601ead94b8df9b328f9b3ff725936348f7ef9eadc4ab112a9b696fce

  • SSDEEP

    3072:XpMbWdLedlOxKA5PZqcWB6tea9o/PeTDcHzEBp2GhBsSnb/PkkXx:LdLtxzZqPBwKneff

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

54.6

Botnet

517

C2

https://t.me/huobiinside

https://mas.to/@kyriazhs1975

Attributes
  • profile_id

    517

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Extracted

Family

redline

Botnet

LogsDiller Cloud (TG: @me_golds)

C2

77.73.134.27:7161

Attributes
  • auth_value

    e136da06c7c0400f4091dab1787720ea

Targets

    • Target

      file.exe

    • Size

      195KB

    • MD5

      8efcb80387d942d8b95c6c9e2f7362f5

    • SHA1

      83c6a73d216d33b566bcb76557d52362664044bd

    • SHA256

      b4f68f3c19cf2298cdd08aa03a7b1be0242f351ec186c8189c22c19a66bf6def

    • SHA512

      19b407ba6be0295a56ff4a8502e416ded1fd4767566dba14019fbe07d65347b833d99575601ead94b8df9b328f9b3ff725936348f7ef9eadc4ab112a9b696fce

    • SSDEEP

      3072:XpMbWdLedlOxKA5PZqcWB6tea9o/PeTDcHzEBp2GhBsSnb/PkkXx:LdLtxzZqPBwKneff

    • 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.

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Creates new service(s)

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • 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.

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

New Service

1
T1050

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

2
T1060

Scheduled Task

1
T1053

Privilege Escalation

New Service

1
T1050

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

2
T1112

File Permissions Modification

1
T1222

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

Tasks