General

  • Target

    90189f8dffe3cbfbb1dc181647b2219b.exe

  • Size

    2.3MB

  • Sample

    230329-vx5d6ahc26

  • MD5

    90189f8dffe3cbfbb1dc181647b2219b

  • SHA1

    118060f3ce88ccf0b7d9d1777b5e93948d4b15fd

  • SHA256

    9daf88d6bf23e8a364ae873b6fd8e6f51cdb8d5ee57ba502a564e71f1bc00c10

  • SHA512

    c0f469355304226bf0d3ecb84f877d10da0d35695011d3d1cd7bb3a7d2330ee92f6cdd9eea5d1c75c29a140f45f7a67f3b779db645c71b1272eb9c046d85f96a

  • SSDEEP

    24576:SdyOaWSMdZo5NYyyVo6cc0WwZ/ct3mW2ny/v/LtGZsYjot0hq+BMGzHOMJWv+pA+:SdyO++HiqAMe/i/09y/6j

Malware Config

Extracted

Family

cryptbot

C2

http://ivyhur32.top/gate.php

Attributes
  • payload_url

    http://womheq04.top/favism.dat

Targets

    • Target

      90189f8dffe3cbfbb1dc181647b2219b.exe

    • Size

      2.3MB

    • MD5

      90189f8dffe3cbfbb1dc181647b2219b

    • SHA1

      118060f3ce88ccf0b7d9d1777b5e93948d4b15fd

    • SHA256

      9daf88d6bf23e8a364ae873b6fd8e6f51cdb8d5ee57ba502a564e71f1bc00c10

    • SHA512

      c0f469355304226bf0d3ecb84f877d10da0d35695011d3d1cd7bb3a7d2330ee92f6cdd9eea5d1c75c29a140f45f7a67f3b779db645c71b1272eb9c046d85f96a

    • SSDEEP

      24576:SdyOaWSMdZo5NYyyVo6cc0WwZ/ct3mW2ny/v/LtGZsYjot0hq+BMGzHOMJWv+pA+:SdyO++HiqAMe/i/09y/6j

    • 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