General
Target

644c9cf4829eb937cbecbeac43175b720a36c38d9cb3fbee3e22346f08fd8b33

Size

871KB

Sample

220521-pk26dafec6

Score
10/10
MD5

3569faf4156c13edc66336020b402366

SHA1

5ee79913dbb5d4f655a060fb909f364a543ea63c

SHA256

644c9cf4829eb937cbecbeac43175b720a36c38d9cb3fbee3e22346f08fd8b33

SHA512

23fddb0659674afd2b4c318a07f475d2db3f68e3da03acdf39b3ce94b3103ac61e2e1b4a73c0e8eea795069f3b59b7b1391e5d941b05dd7eb80bbd0d2809ede5

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\AEF946DCB4\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.7.0 ################################################################# ### 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 3:08:57 PM MassLogger Started: 5/21/2022 3:08:39 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Tech7 A S Profile.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\F95B724EDE\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.7.0 ################################################################# ### 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 3:09:13 PM MassLogger Started: 5/21/2022 3:09:04 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Tech7 A S Profile.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:
Targets
Target

Tech7 A S Profile.exe

MD5

75de41ae05708e3574b8e734996eb88f

Filesize

980KB

Score
10/10
SHA1

5a545c6edf90ccedea8387d8f5040f97b9e68bbe

SHA256

083c70afde1be48426ebcf28eacfa0cd47f96130790b79f5a367ae6b00eab142

SHA512

f9c7bb8712cc3b9cffaa56b10091b28d05af3a59a344a29f6132c280626fadff738a14a9bcf325865ac480a60baa6d5e54575c58c8427c78ad3c841178d4235a

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