General

  • Target

    42907ad5b2e791285f0aa3943d82f695.exe

  • Size

    319KB

  • Sample

    220927-p9s9rsdec7

  • MD5

    42907ad5b2e791285f0aa3943d82f695

  • SHA1

    5c726c6fabe30794524d562604ecf4932e790f01

  • SHA256

    bf68f342d067a45faefd8844507d7a7785d05d5942f4c2bb9ff812f559fe0038

  • SHA512

    94b8ed278afe8bf6fcb91a4f912bb163b41c232af9517177c8c1eca5e12432f4a46592f6136cf52f8a2f404ca587b385732322419bce5d43138731187a4f21bf

  • SSDEEP

    3072:GDhX13WowfytSR25q144j1ppNBYpVWF3ja2I/e0K1GLaWM/h3BsxkgaBChU/pZa4:GDFcetSntXUnuzee0RWWnigabwVf

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

raccoon

Botnet

aeea23901ace2687ada0edd1d2615c7f

C2

http://77.73.134.31/

rc4.plain

Targets

    • Target

      42907ad5b2e791285f0aa3943d82f695.exe

    • Size

      319KB

    • MD5

      42907ad5b2e791285f0aa3943d82f695

    • SHA1

      5c726c6fabe30794524d562604ecf4932e790f01

    • SHA256

      bf68f342d067a45faefd8844507d7a7785d05d5942f4c2bb9ff812f559fe0038

    • SHA512

      94b8ed278afe8bf6fcb91a4f912bb163b41c232af9517177c8c1eca5e12432f4a46592f6136cf52f8a2f404ca587b385732322419bce5d43138731187a4f21bf

    • SSDEEP

      3072:GDhX13WowfytSR25q144j1ppNBYpVWF3ja2I/e0K1GLaWM/h3BsxkgaBChU/pZa4:GDFcetSntXUnuzee0RWWnigabwVf

    • DcRat

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

    • Detected Djvu ransomware

    • Detects Smokeloader packer

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Raccoon

      Raccoon is an infostealer written in C++ and first seen in 2019.

    • 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.

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

    • Downloads MZ/PE file

    • Executes dropped EXE

    • VMProtect packed file

      Detects executables packed with VMProtect commercial packer.

    • 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.

    • 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.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • 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.

    • Checks whether UAC is enabled

    • 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 NtSetInformationThreadHideFromDebugger

    • 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

Virtualization/Sandbox Evasion

1
T1497

File Permissions Modification

1
T1222

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

6
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks