Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-09-2022 06:26

General

  • Target

    c2c621115807b1bf668f37a6e23911a8.exe

  • Size

    280KB

  • MD5

    c2c621115807b1bf668f37a6e23911a8

  • SHA1

    bf85df039070207f94eb9198346f574c183a9a89

  • SHA256

    4e139a927b79b8329595275a435cccf59828e5c9df846abb751ac11191ed2889

  • SHA512

    b4e40d0097409e4390f4992fa21a94c47850062f0af73874f42e4e1e6aaacf008f0df1c715e3fe90704f31f4fcc0f293752f8f5ae598ad2ad78c8ca78058fc83

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

raccoon

Botnet

7394a7fc5da9794209d8b0503ca4abf4

C2

http://45.8.145.203

rc4.plain

Extracted

Family

redline

Botnet

LogsDiller Cloud (Sup: @mr_golds)

C2

77.73.134.27:8163

Attributes
auth_value
56c6f7b9024c076f0a96931453da7e56

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Signatures

  • Detected Djvu ransomware ⋅ 10 IoCs
  • Detects Smokeloader packer ⋅ 2 IoCs
  • 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 ⋅ 1 IoCs
  • 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.

  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner payload ⋅ 1 IoCs
  • Creates new service(s) ⋅ 1 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE ⋅ 17 IoCs
  • Modifies Windows Firewall ⋅ 1 TTPs 1 IoCs
  • Sets service image path in registry ⋅ 2 TTPs 1 IoCs
  • Checks computer location settings ⋅ 2 TTPs 6 IoCs

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

  • Loads dropped DLL ⋅ 3 IoCs
  • Modifies file permissions ⋅ 1 TTPs 1 IoCs
  • Reads user/profile data of web browsers ⋅ 2 TTPs

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

  • Accesses 2FA software files, possible credential harvesting ⋅ 2 TTPs
  • Accesses Microsoft Outlook profiles ⋅ 1 TTPs 3 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting ⋅ 2 TTPs
  • Adds Run key to start application ⋅ 2 TTPs 1 IoCs
  • Checks installed software on the system ⋅ 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service ⋅ 3 IoCs

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

  • Drops file in System32 directory ⋅ 2 IoCs
  • Suspicious use of SetThreadContext ⋅ 8 IoCs
  • Launches sc.exe ⋅ 3 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices ⋅ 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash ⋅ 2 IoCs
  • Checks SCSI registry key(s) ⋅ 3 TTPs 6 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry ⋅ 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Creates scheduled task(s) ⋅ 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Delays execution with timeout.exe ⋅ 1 IoCs
  • Kills process with taskkill ⋅ 1 IoCs
  • Modifies data under HKEY_USERS ⋅ 5 IoCs