Resubmissions

14-04-2023 08:55

230414-kvtjrshc46 10

12-04-2023 08:12

230412-j3tztscd9w 10

General

  • Target

    f6485dc31273e997d6454a22a4071f30.exe

  • Size

    6MB

  • Sample

    230414-kvtjrshc46

  • MD5

    f6485dc31273e997d6454a22a4071f30

  • SHA1

    b123c2ca899c7211aba07c693bc302eaf1364c2b

  • SHA256

    b840500c7985e9a0db4afaf55f633a1f0fc4a1f52344791b13e14b8fafc8ffab

  • SHA512

    d97b18a47efc19b462c62f6dfe81acae8e430d016e2acdd479db8a06d4a8f613544bf5ee83145740013dec2d8848ac6073044134047a242d7596dbcd13a00ae0

  • SSDEEP

    196608:pbDqCby+S5mOSZHAGpxQxYuil0OtL5oe:4CmrSZgXGJO8R

Malware Config

Extracted

Family

cryptbot

C2

http://ubydhm32.top/gate.php

Targets

    • Target

      f6485dc31273e997d6454a22a4071f30.exe

    • Size

      6MB

    • MD5

      f6485dc31273e997d6454a22a4071f30

    • SHA1

      b123c2ca899c7211aba07c693bc302eaf1364c2b

    • SHA256

      b840500c7985e9a0db4afaf55f633a1f0fc4a1f52344791b13e14b8fafc8ffab

    • SHA512

      d97b18a47efc19b462c62f6dfe81acae8e430d016e2acdd479db8a06d4a8f613544bf5ee83145740013dec2d8848ac6073044134047a242d7596dbcd13a00ae0

    • SSDEEP

      196608:pbDqCby+S5mOSZHAGpxQxYuil0OtL5oe:4CmrSZgXGJO8R

    • 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

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