General

  • Target

    ea42501417b7f05736d1af9d20b087a3a8742990aa7e3852d1ed1681dc4af8e3

  • Size

    405KB

  • Sample

    211207-f853haahd4

  • MD5

    144a2031897a0e34e3b1d9d47620cb77

  • SHA1

    d10c50f23dcc7aa545cd532a01305f79292556cb

  • SHA256

    ea42501417b7f05736d1af9d20b087a3a8742990aa7e3852d1ed1681dc4af8e3

  • SHA512

    d57b6deaddd1607cc7074d6e6a6e5f599ebe6653bbef523a12194e98d8c3e406fc059c5651553c71f3aaac1facb9b2625a30ed131130ed358654c199eb52dfd4

Malware Config

Extracted

Family

cryptbot

C2

gomcds22.top

morbuq02.top

Attributes
  • payload_url

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

Targets

    • Target

      ea42501417b7f05736d1af9d20b087a3a8742990aa7e3852d1ed1681dc4af8e3

    • Size

      405KB

    • MD5

      144a2031897a0e34e3b1d9d47620cb77

    • SHA1

      d10c50f23dcc7aa545cd532a01305f79292556cb

    • SHA256

      ea42501417b7f05736d1af9d20b087a3a8742990aa7e3852d1ed1681dc4af8e3

    • SHA512

      d57b6deaddd1607cc7074d6e6a6e5f599ebe6653bbef523a12194e98d8c3e406fc059c5651553c71f3aaac1facb9b2625a30ed131130ed358654c199eb52dfd4

    • 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