General
Target

21b67bec04dceed1e21878f291dbd84f7ebb39d7c64fa6d8a284546d8dd7fb33

Size

789KB

Sample

220521-pnmj4affg4

Score
10/10
MD5

0f3b54ee94672982372111207160b184

SHA1

529197c2837df207b23186947a733a69e57187da

SHA256

21b67bec04dceed1e21878f291dbd84f7ebb39d7c64fa6d8a284546d8dd7fb33

SHA512

62f0616f18a452888eed07301b68392012fa789281955ce73e3bae1783e7850fea944e3f32953ed9a98213a3e9280b29968ef39b6f78e8e8325c9eaf38af64db

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.7.1 ################################################################# ### Logger Details ### 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 3:10:21 PM MassLogger Started: 5/21/2022 3:10:05 PM Interval: 9 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\sampl request.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\8236ADF044\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.7.1 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.50 Location: United States Windows OS: Microsoft Windows 10 Pro64bit Windows Serial Key: W269N-WFGWX-YVC9B-4J6C9-T83GX CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 3:10:12 PM MassLogger Started: 5/21/2022 3:10:06 PM Interval: 9 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\sampl request.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:
Targets
Target

sampl request.exe

MD5

b9f272bf7b71dd282dc1b7f60ce75dfe

Filesize

879KB

Score
10/10
SHA1

a9b1ccf8e78165bd891ef9d78fb9d39946e35901

SHA256

bec0a2fe9590afbf0a4c5fd15568c59dddd36978769900624c67785e9b0e4363

SHA512

5b1cdbaa9c8a01b6157d414fed83dc5e19eec225fa2cb911c5dfdcdd245e0bd81ab8d042eb70a96a483a88e053a92c8a2914faf6f5c0b9b2b45f3cc620263083

Tags

Signatures

  • MassLogger

    Description

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

    Tags

  • MassLogger Main Payload

  • MassLogger log file

    Description

    Detects a log file produced by MassLogger.

  • Modifies visibility of file extensions in Explorer

    Tags

    TTPs

    Hidden Files and DirectoriesModify Registry
  • Checks computer location settings

    Description

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

    TTPs

    Query RegistrySystem Information Discovery
  • Reads user/profile data of web browsers

    Description

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

    Tags

    TTPs

    Data from Local SystemCredentials in Files
  • Accesses Microsoft Outlook profiles

    Tags

    TTPs

    Email Collection
  • Looks up external IP address via web service

    Description

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

Related Tasks

MITRE ATT&CK Matrix
Command and Control
    Credential Access
    Execution
      Exfiltration
        Impact
          Initial Access
            Lateral Movement
              Persistence
              Privilege Escalation
                Tasks

                static1

                Score
                N/A