General

  • Target

    856bf12bf3ecb5b5a388a0a58f99be9b

  • Size

    656KB

  • Sample

    210714-kylez5326j

  • MD5

    856bf12bf3ecb5b5a388a0a58f99be9b

  • SHA1

    6b632e17a4ab106806d378f598f0904906eec1e4

  • SHA256

    949b755ce7ba4afeffe8c261141b77bca5f443761aa062936141ed94b737e848

  • SHA512

    98903e3763d43c2983b132029a215a9dc0c83ea4a4e9af8e2530b1f6c655162be12b7e18a79c62f1965c75d5855a761962d114ef4d41d87da06d341b5a5302da

Malware Config

Extracted

Family

cryptbot

C2

wymbhy32.top

moriue03.top

Attributes
  • payload_url

    http://hofxuo04.top/download.php?file=lv.exe

Targets

    • Target

      856bf12bf3ecb5b5a388a0a58f99be9b

    • Size

      656KB

    • MD5

      856bf12bf3ecb5b5a388a0a58f99be9b

    • SHA1

      6b632e17a4ab106806d378f598f0904906eec1e4

    • SHA256

      949b755ce7ba4afeffe8c261141b77bca5f443761aa062936141ed94b737e848

    • SHA512

      98903e3763d43c2983b132029a215a9dc0c83ea4a4e9af8e2530b1f6c655162be12b7e18a79c62f1965c75d5855a761962d114ef4d41d87da06d341b5a5302da

    • CryptBot

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

    • CryptBot Payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Drops startup file

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • 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.

    • 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.

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Collection

Data from Local System

3
T1005

Command and Control

Web Service

1
T1102

Tasks