General

  • Target

    729e19020c7b7a3d9bc9f9bdbb69fc32351ade4228e08ebb04de2da5e6b4bdf6

  • Size

    1.7MB

  • Sample

    220503-x1yf5aafd6

  • MD5

    caea94dab0c8720bd97447d7f9e1ecb8

  • SHA1

    f3eb2519d75901b6c8fc6107bd354b013e6a0b71

  • SHA256

    729e19020c7b7a3d9bc9f9bdbb69fc32351ade4228e08ebb04de2da5e6b4bdf6

  • SHA512

    7752ae0ca4cece6e444af17c50c5cd2226f4c051674286529bf23c4e9f540455e54d969ab2988a7c580beb88be515bf59494b81516a3f9faafe6514123f9ecdb

Malware Config

Targets

    • Target

      729e19020c7b7a3d9bc9f9bdbb69fc32351ade4228e08ebb04de2da5e6b4bdf6

    • Size

      1.7MB

    • MD5

      caea94dab0c8720bd97447d7f9e1ecb8

    • SHA1

      f3eb2519d75901b6c8fc6107bd354b013e6a0b71

    • SHA256

      729e19020c7b7a3d9bc9f9bdbb69fc32351ade4228e08ebb04de2da5e6b4bdf6

    • SHA512

      7752ae0ca4cece6e444af17c50c5cd2226f4c051674286529bf23c4e9f540455e54d969ab2988a7c580beb88be515bf59494b81516a3f9faafe6514123f9ecdb

    • Darkstealer

      Darkstealer is a file grabber, data stealer, and RAT.

    • Echelon

      Echelon is a .NET stealer that targets passwords from browsers, email and cryptocurrency clients.

    • Echelon - DarkStealer Fork

      Payload resembles modified variant of Echelon Stealer called DarkStealer.

    • Echelon log file

      Detects a log file produced by Echelon.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Looks up external IP address via web service

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

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Bootkit

1
T1067

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

3
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Tasks