Resubmissions

06-12-2022 13:52

221206-q6sdqsdc23 10

21-09-2022 08:18

220921-j7eqpsbdep 9

21-09-2022 07:05

220921-hwvr4sffe3 9

21-09-2022 05:39

220921-gca3xsahbn 9

General

  • Target

    859c659aee8b897aeebf4b87364cc6d1.exe

  • Size

    2MB

  • Sample

    220921-gca3xsahbn

  • MD5

    859c659aee8b897aeebf4b87364cc6d1

  • SHA1

    c362e37f2a75447fe19eab90a6eba3dd3fa402e7

  • SHA256

    b2fdf16f56a53ec57134d20655a23d5919c022a97cf7da4087bd6bf9f3704bb6

  • SHA512

    b5a1ddf62be64eb5b58e674032884095e5a4ec190f4a8944e71efdc7f1faf57cfd5a9af7cd3d3040c1c3912ea4afafbfbea5cbe8532d5326f5c8d48f304a7ee6

  • SSDEEP

    49152:d7BbOYaReQpAxY+TuQ/tymHRuKjQdT8K:nbOYakQpA++TuQ/tymHRumS

Malware Config

Extracted

Family

cryptbot

C2

http://dixiel22.top/gate.php

Attributes
payload_url
http://lueink02.top/lutzen.dat

Targets

    • Target

      859c659aee8b897aeebf4b87364cc6d1.exe

    • Size

      2MB

    • MD5

      859c659aee8b897aeebf4b87364cc6d1

    • SHA1

      c362e37f2a75447fe19eab90a6eba3dd3fa402e7

    • SHA256

      b2fdf16f56a53ec57134d20655a23d5919c022a97cf7da4087bd6bf9f3704bb6

    • SHA512

      b5a1ddf62be64eb5b58e674032884095e5a4ec190f4a8944e71efdc7f1faf57cfd5a9af7cd3d3040c1c3912ea4afafbfbea5cbe8532d5326f5c8d48f304a7ee6

    • SSDEEP

      49152:d7BbOYaReQpAxY+TuQ/tymHRuKjQdT8K:nbOYakQpA++TuQ/tymHRumS

    • CryptBot

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

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

    • Executes dropped EXE

    • 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

    • 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

MITRE ATT&CK Matrix

Command and Control

    Credential Access

    Execution

      Exfiltration

        Impact

          Initial Access

            Lateral Movement

              Persistence

                Privilege Escalation

                  Tasks