General

  • Target

    98210e2d9b34c77ecf43909546294cc4.exe

  • Size

    791KB

  • Sample

    230316-xvxmmscd97

  • MD5

    98210e2d9b34c77ecf43909546294cc4

  • SHA1

    2882ee363adc9fce181b202459897f0f82987807

  • SHA256

    7ccda59528c0151bc9f11b7f25f8291d99bcf541488c009ef14e2a104e6f0c5d

  • SHA512

    b72772bfbb6c541e9263fd7008447084b4da58c0c4ffe7a4ea50ab029ab74f294388e51267f9d8136c54c099a5d369718e5bba98809acd506068bf512da39d4b

  • SSDEEP

    24576:wosWSM18jjQ34deYJRQw6fVHsxIeMrjXqCC6xMjvFCPH43H:LsWSMy/QIzQwsVHsxIeMqCCEMjyM

Malware Config

Extracted

Family

cryptbot

C2

http://erniku42.top/gate.php

Attributes
  • payload_url

    http://ovapfa05.top/unfele

Targets

    • Target

      98210e2d9b34c77ecf43909546294cc4.exe

    • Size

      791KB

    • MD5

      98210e2d9b34c77ecf43909546294cc4

    • SHA1

      2882ee363adc9fce181b202459897f0f82987807

    • SHA256

      7ccda59528c0151bc9f11b7f25f8291d99bcf541488c009ef14e2a104e6f0c5d

    • SHA512

      b72772bfbb6c541e9263fd7008447084b4da58c0c4ffe7a4ea50ab029ab74f294388e51267f9d8136c54c099a5d369718e5bba98809acd506068bf512da39d4b

    • SSDEEP

      24576:wosWSM18jjQ34deYJRQw6fVHsxIeMrjXqCC6xMjvFCPH43H:LsWSMy/QIzQwsVHsxIeMqCCEMjyM

    • 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