General

  • Target

    b02339d546f7c39f5673ca6def6c8bd8446aa3d2afdef27d7e8e5dc193bb90f8

  • Size

    404KB

  • Sample

    211207-n46ggahafj

  • MD5

    d015836c285faa0217fb71244cbd8308

  • SHA1

    98ddf20372f07f859e8975407e465fc9b4ead736

  • SHA256

    b02339d546f7c39f5673ca6def6c8bd8446aa3d2afdef27d7e8e5dc193bb90f8

  • SHA512

    e2b369f2f435b27ea727d8fec1edaec3588ecc26cfb22026c93c748ce40d25ef10d327a9655752c0ff5d6ad55100bcea8f271a82fb97f23df1e100cdd01abb0e

Malware Config

Extracted

Family

cryptbot

C2

gomcds22.top

morbuq02.top

Attributes
  • payload_url

    http://peuocu14.top/download.php?file=tauten.exe

Targets

    • Target

      b02339d546f7c39f5673ca6def6c8bd8446aa3d2afdef27d7e8e5dc193bb90f8

    • Size

      404KB

    • MD5

      d015836c285faa0217fb71244cbd8308

    • SHA1

      98ddf20372f07f859e8975407e465fc9b4ead736

    • SHA256

      b02339d546f7c39f5673ca6def6c8bd8446aa3d2afdef27d7e8e5dc193bb90f8

    • SHA512

      e2b369f2f435b27ea727d8fec1edaec3588ecc26cfb22026c93c748ce40d25ef10d327a9655752c0ff5d6ad55100bcea8f271a82fb97f23df1e100cdd01abb0e

    • CryptBot

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

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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • 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

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • 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

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Collection

Data from Local System

2
T1005

Command and Control

Web Service

1
T1102

Tasks