General
Target

8847ac1680030bbf54afbda6f552c4bdef8b66a510c0de95d845364270edf46a

Size

787KB

Sample

220521-pjc5vsfdd5

Score
10/10
MD5

710688e1ed08764506c51bfc2550dd40

SHA1

4715ae0de8b1b2209983180eb4b90600b7db531c

SHA256

8847ac1680030bbf54afbda6f552c4bdef8b66a510c0de95d845364270edf46a

SHA512

06a936ce87bb9a2ec2883b803a5fca5fd7a5be44d586be63a4ce18f1a82f9a0dfa3a6e0a8d0df83c064e0b412227efc8d89e96c41ab97a8a1d1d1a930f364a55

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\79FE0CC911\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.7.1 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 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 1:09:06 PM MassLogger Started: 5/21/2022 1:08:55 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\4-5114-HT.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 3:08:02 PM MassLogger Started: 5/21/2022 3:07:59 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\4-5114-HT.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:
Targets
Target

4-5114-HT.exe

MD5

c8afbe0ba63c3dcde9c7c05b2e344951

Filesize

818KB

Score
10/10
SHA1

398ab5dd98b0720d4dd858a6da836e022a9d7849

SHA256

81ae80d0dc7e949cd78a6b555c1b08ebd8ec89ecf9847f3d1c0d9790b11be355

SHA512

6e5ca7f4c06a09d5e784a5d153236c93a663b6046366d1e81b32eab75c1ed886116a8548a6e11f1e5c09b517f89f93312e9cb0ff1d6688c60d9b6b1c5d1fd9cc

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.

  • ReZer0 packer

    Description

    Detects ReZer0, a packer with multiple versions used in various campaigns.

    Tags

  • 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.

  • Suspicious use of SetThreadContext

Related Tasks

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

                  static1

                  Score
                  N/A