General

  • Target

    86a4cdd8a4ce24624f28de4d77283dbb.exe

  • Size

    795KB

  • Sample

    230314-jz2khaec64

  • MD5

    86a4cdd8a4ce24624f28de4d77283dbb

  • SHA1

    c363e391e8a6db6b69444de2a7f1ba22f7f78eba

  • SHA256

    bcb279b39192d656df357e8bb33bc52ebddc209d6ecdbff75ca65334af06905a

  • SHA512

    cd6d53a7e1564117ef8c9cc277bbb3ece668b211fbabef00192ccbbd916dfec9225fcf498248347b048957b123cfc0332e059aedf84d6f945411c8eed29f10db

  • SSDEEP

    12288:RQMHUQ8/KyJa1XNrW1kQZTTU2pJrt0EeUOf9ngj6pGJ4iHfQG+HHIisH:KMHGyZJWDZTIMJWEeUe9nVi/b+HoBH

Malware Config

Extracted

Family

cryptbot

C2

http://ernlen22.top/gate.php

Attributes
  • payload_url

    http://ovalim02.top/magpie.dat

Targets

    • Target

      86a4cdd8a4ce24624f28de4d77283dbb.exe

    • Size

      795KB

    • MD5

      86a4cdd8a4ce24624f28de4d77283dbb

    • SHA1

      c363e391e8a6db6b69444de2a7f1ba22f7f78eba

    • SHA256

      bcb279b39192d656df357e8bb33bc52ebddc209d6ecdbff75ca65334af06905a

    • SHA512

      cd6d53a7e1564117ef8c9cc277bbb3ece668b211fbabef00192ccbbd916dfec9225fcf498248347b048957b123cfc0332e059aedf84d6f945411c8eed29f10db

    • SSDEEP

      12288:RQMHUQ8/KyJa1XNrW1kQZTTU2pJrt0EeUOf9ngj6pGJ4iHfQG+HHIisH:KMHGyZJWDZTIMJWEeUe9nVi/b+HoBH

    • 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