General

  • Target

    15dbde1eabea6649931226bb8acd762b.exe

  • Size

    791KB

  • Sample

    230315-lh5lyace57

  • MD5

    15dbde1eabea6649931226bb8acd762b

  • SHA1

    cf95d77766970f95610355e928b9a6a973dfe7ae

  • SHA256

    7344321ef7a66c81d40e41f891bdc1679efdcceb62442913c9ea0ef3891026f1

  • SHA512

    d92d8d555462bb5c9d67eb8eb93b2541897cdcf9837614658084baa78cf54ec1f0e62a64e7e76cebec8f42bcff5e13107103f3e24faedd8f408a1955c15f949c

  • SSDEEP

    12288:heo+hRM3jZ/CBXTgsOptX5EHornL3hQx8ppd3KofmK+SzdAWCO9yum6XZsh/E6cf:ihUjZqBXEsOHpEU3W2Nx9l9e6289fH

Malware Config

Extracted

Family

cryptbot

C2

http://ernblt32.top/gate.php

Attributes
  • payload_url

    http:

Targets

    • Target

      15dbde1eabea6649931226bb8acd762b.exe

    • Size

      791KB

    • MD5

      15dbde1eabea6649931226bb8acd762b

    • SHA1

      cf95d77766970f95610355e928b9a6a973dfe7ae

    • SHA256

      7344321ef7a66c81d40e41f891bdc1679efdcceb62442913c9ea0ef3891026f1

    • SHA512

      d92d8d555462bb5c9d67eb8eb93b2541897cdcf9837614658084baa78cf54ec1f0e62a64e7e76cebec8f42bcff5e13107103f3e24faedd8f408a1955c15f949c

    • SSDEEP

      12288:heo+hRM3jZ/CBXTgsOptX5EHornL3hQx8ppd3KofmK+SzdAWCO9yum6XZsh/E6cf:ihUjZqBXEsOHpEU3W2Nx9l9e6289fH

    • CryptBot

      A C++ stealer distributed widely in bundle with other software.

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

    • 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.

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

6
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

2
T1005

Tasks