General

  • Target

    c701607a15dded41bccd054b3e2b84bccd855e4cab07e6523e113f03c5be920a

  • Size

    326KB

  • Sample

    220521-xknlzsfbhp

  • MD5

    73be516149b9f256a7e92f45aea9e379

  • SHA1

    7521748215c62ee4d02eb2214c669a681c87f2c3

  • SHA256

    c701607a15dded41bccd054b3e2b84bccd855e4cab07e6523e113f03c5be920a

  • SHA512

    0132bcdfbfc54c957e25681578317f5170be3c96ce64419911a268cbc3f68b6a1c689eebe53d87405e7bc1fd1d0e630c7b6f717c820725001e434a9a60c41292

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note
################################################################# MassLogger v2.0.0.0 ################################################################# ### 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 8:55:15 PM MassLogger Started: 5/21/2022 8:55:04 PM Interval: 12 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\PO#556361TW.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\19E979543A\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v2.0.0.0 ################################################################# ### Logger Details ### User Name: Admin IP: 127.0.0.1 Location: United States Windows OS: Microsoft Windows 10 Pro 64bit 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 8:55:23 PM MassLogger Started: 5/21/2022 8:55:08 PM Interval: 12 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\PO#556361TW.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Targets

    • Target

      PO#556361TW.exe

    • Size

      704KB

    • MD5

      ff87250b9ebf0cddd524ba8e4282d94f

    • SHA1

      af575cb114ce44e76ec94d5e5bd29f59230042c1

    • SHA256

      4c4ee69bd58db589d202dcfb5872fb970e4367547e4ba90f57d9db502daa1c65

    • SHA512

      f2244aaed8910aa338a15e4dd1e0128839ea053ca837955c40ba1d79829504e8a7276c8c4879ba52561757375b310507102868900c30d44ae2b444e586df79c8

    • MassLogger

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

    • MassLogger log file

      Detects a log file produced by MassLogger.

    • 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.

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Tasks