General

  • Target

    79b0c9d309debac7384a0d5a95839b42be00d66aa0e545cf84060f3c0c8af22b

  • Size

    807KB

  • Sample

    220520-2emjysfbh3

  • MD5

    8c847c72fe0cc8ebf7e0681cfc2c4773

  • SHA1

    ca255b0496a7caa5ed405048987f10c5543c8fa7

  • SHA256

    79b0c9d309debac7384a0d5a95839b42be00d66aa0e545cf84060f3c0c8af22b

  • SHA512

    03aa0288fa14f7796b066c3b5e656380e9b097d52949b1735d1a6301cb4e4c4cbf9551fba6a77b456898f0525ef4a14407497f55388be3211c02df7486060ea2

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\3B8E3C2477\Log.txt

Family

masslogger

Ransom Note
<|| v2.4.0.0 ||> User Name: Admin IP: 154.61.71.50 Location: United States Windows OS: Microsoft Windows 7 Ultimate 64bit Windows Serial Key: D4F6K-QK3RD-TMVMJ-BBMRX-3MBMV CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 12:37:36 AM MassLogger Started: 5/21/2022 12:37:29 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\RFQ_PCPSPIRSZ2020022.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Done! C:\Users\Admin\AppData\Local\Temp\RFQ_PCPSPIRSZ2020022.exe <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| Window Searcher ||> Disabled <|| Bot Killer ||> Killed : 0 malware <|| Search And Upload ||> Disabled <|| Telegram Desktop ||> Not Installed <|| Pidgin ||> Not Installed <|| FileZilla ||> Not Installed <|| Discord Tokken ||> Not Installed <|| NordVPN ||> Not Installed <|| Outlook ||> Not Installed <|| FoxMail ||> Not Installed <|| Thunderbird ||> Not Installed <|| FireFox ||> Not Found <|| QQ Browser ||> Not Installed <|| Chromium Recovery ||> Not Installed or Not Found <|| Keylogger And Clipboard ||> NA

Targets

    • Target

      RFQ_PCPSPIRSZ2020022.exe

    • Size

      895KB

    • MD5

      78b61b1e9b375628d02bf7d289b1aeab

    • SHA1

      f861925e28320134d0458100c9898d6fdd8c0154

    • SHA256

      a551bc2327862c1430dac51dce368001622525fae235ca689f7b055e0d3125c7

    • SHA512

      05cd3aeefb9fee84c813af2951eccf2b5c2e1679a3fe892cdd9d6a37cc215064bde4e9a39f41c1afbba9e672020a1f7e5a7c25452f01ffe91ec54de48c2ef3cd

    • MassLogger

      Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

    • MassLogger log file

      Detects a log file produced by MassLogger.

    • Looks for VirtualBox Guest Additions in registry

    • Looks for VMWare Tools registry key

    • 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.

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • Looks up external IP address via web service

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

    • Maps connected drives based on registry

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

    • Suspicious use of SetThreadContext

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

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Tasks