General

  • Target

    File(1).zip

  • Size

    6.2MB

  • Sample

    220930-ytnh1sfehq

  • MD5

    f093d858355f96dbe4bb186fcd33f30a

  • SHA1

    da94dd93ff30c72cbda427510b653737b8100fa3

  • SHA256

    ef1c7df22e071bd236cff6de972f281c9db53e4f247be4cfd341777c03277108

  • SHA512

    3d3e4d3dfd112d7155153557cdbd71c1c51cd2d8798a3bb1cd5319c7a03bf815302113f1b34854e2ddd40065f00cd3931af317851dfe908b8e7cf0d7f28a7d29

  • SSDEEP

    98304:SNoOrhfhzTC1iekHTJJ4NAV/v3IbSMc3TggFEtZ6GW4ISTXPklaS:mjfhnkk1rv36SlcgFKe47cD

Malware Config

Extracted

Family

privateloader

C2

http://163.123.143.4/proxies.txt

http://107.182.129.251/server.txt

pastebin.com/raw/A7dSG1te

http://wfsdragon.ru/api/setStats.php

163.123.143.12

http://91.241.19.125/pub.php?pub=one

http://sarfoods.com/index.php

Attributes
  • payload_url

    https://vipsofts.xyz/files/mega.bmp

Extracted

Family

djvu

C2

http://winnlinne.com/test3/get.php

Attributes
  • extension

    .ofoq

  • 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

nymaim

C2

208.67.104.97

85.31.46.167

Extracted

Family

redline

Botnet

nam6.5

C2

103.89.90.61:34589

Attributes
  • auth_value

    ea8cbb51ed8a91dcbe95697e8bb9a9d7

Extracted

Family

redline

Botnet

1

C2

79.110.62.196:35726

Attributes
  • auth_value

    4b711fa6f9a5187b40500266349c0baf

Targets

    • Target

      Install.exe

    • Size

      686.7MB

    • MD5

      27653c835f31dcb8aca420f8ef5eb421

    • SHA1

      fe3353e2257cfab6b6320db281acd67702131486

    • SHA256

      80a1fc5830602b1c5ec1fa6439c3b4189558fd4deaa175e732de9f956ddf55c2

    • SHA512

      2149f983b7e4bd123917beb324a8d5b7d60acd718c675a176939378901f5c98ac2b652ec2c095ce723d4de00350c5f9806b1d5a3b8467106075bc8ecf615b879

    • SSDEEP

      98304:kKiI2ZBtRK7IF1RXsMfWMIl6a6KLmKF0rVKwK8kuvG:r2p7OqWRsa6KKKFGRK8dG

    • Detected Djvu ransomware

    • Detects Smokeloader packer

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • NyMaim

      NyMaim is a malware with various capabilities written in C++ and first seen in 2013.

    • PrivateLoader

      PrivateLoader is a downloader sold as a pay-per-install malware distribution service.

    • 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.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • VMProtect packed file

      Detects executables packed with VMProtect commercial packer.

    • Checks computer location settings

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

    • Modifies file permissions

    • Reads user/profile data of web browsers

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

    • 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.

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

File Permissions Modification

1
T1222

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Tasks