General

  • Target

    Purchase Order.bin (1).zip

  • Size

    763KB

  • Sample

    210701-v2dp3llsja

  • MD5

    90be44a8c9f063e2ed34279710347275

  • SHA1

    5280dcb110710a50cc1a534fb3b2401d44a53bfd

  • SHA256

    c5734f344026505b9e5ffe5139ae5694acdbcbbcdabb09db0be350b959f26040

  • SHA512

    452dbcd62ade399c95e6a97e35a99f999bf853c94e74e8e88dece35b2c39afd735989117282266386129032a3a172f25b4ea571136f9ea58799cbe46fdb3a2dd

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\5089EDCC92\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.8.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 Location: United States Windows OS: Microsoft Windows 7 Ultimate 64bit Windows Serial Key: HYF8J-CVRMY-CM74G-RPHKF-PW487 CPU: Persocon Processor 2.5+ GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 7/1/2021 4:45:37 AM MassLogger Started: 7/1/2021 4:45:30 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Purchase Order.bin.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\1A60FBA9DF\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.8.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.13 Location: United States Windows OS: Microsoft Windows 10 Enterprise64bit Windows Serial Key: W269N-WFGWX-YVC9B-4J6C9-T83GX CPU: Persocon Processor 2.5+ GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 7/1/2021 6:45:03 AM MassLogger Started: 7/1/2021 6:44:59 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Purchase Order.bin.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Targets

    • Target

      Purchase Order.bin

    • Size

      796KB

    • MD5

      a055b63f32102d1b5ba0d7064d75526b

    • SHA1

      6032e66d65cf7992162047780ccadbee38751dea

    • SHA256

      6ad5aee17e0fa5baa1a5ba9b0375faa8e98ff72dd4a79e5fb8209237167e119d

    • SHA512

      45b6b104f848a993cea0854ee65fc9a88b5cac379db492f7c850dfa787efa9c8d82a403c7d868683303b6e7e5e4068a1eea830330359e633a9f3e7c2e1b37024

    • MassLogger

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

    • MassLogger Main Payload

    • MassLogger log file

      Detects a log file produced by MassLogger.

    • Looks for VirtualBox Guest Additions in registry

    • ReZer0 packer

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

    • 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.

    • 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

Tasks