General

  • Target

    d261cebed0f29c2e90222dc7e949ee09.exe

  • Size

    842KB

  • Sample

    210505-6ymnbjrsxn

  • MD5

    d261cebed0f29c2e90222dc7e949ee09

  • SHA1

    81a645c5703137419abc6d163649d5911d7347af

  • SHA256

    4191eab7dce6ae84489c20d6ac93d123e42bf0019060847cf76e7be00139eb1c

  • SHA512

    bb808c7b9dd9877e6e214b6c8e40bd596ab3d2f48e37db75423e36315d754776c00ea2c49a87604bd15850c518b5ea7c809f96c6174a2b333c2a926242d148ea

Malware Config

Targets

    • Target

      d261cebed0f29c2e90222dc7e949ee09.exe

    • Size

      842KB

    • MD5

      d261cebed0f29c2e90222dc7e949ee09

    • SHA1

      81a645c5703137419abc6d163649d5911d7347af

    • SHA256

      4191eab7dce6ae84489c20d6ac93d123e42bf0019060847cf76e7be00139eb1c

    • SHA512

      bb808c7b9dd9877e6e214b6c8e40bd596ab3d2f48e37db75423e36315d754776c00ea2c49a87604bd15850c518b5ea7c809f96c6174a2b333c2a926242d148ea

    • Deletes Windows Defender Definitions

      Uses mpcmdrun utility to delete all AV definitions.

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • Reads user/profile data of web browsers

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

    • Accesses 2FA software files, possible credential harvesting

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

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

    • 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

Execution

Command-Line Interface

1
T1059

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Impair Defenses

1
T1562

File Permissions Modification

1
T1222

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

4
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

4
T1005

Tasks